4x+2y=20 -8x-3y=16 what is y

Answers

Answer 1

Answer:

y = 56

Explanation:

We label each of the given equations as follows;

4·x + 2·y = 20...(1)

-8·x - 3·y = 16...(2)

Therefore, we are given a simultaneous equation, question

We make 'x' the subject of both equations and equate the result to find the value of 'y' as follows;

For equation (1)

4·x + 2·y = 20

∴ x = (20 - 2·y)/4 = 5 - y/2

x =  5 - y/2

For equation (2), we have;

-8·x - 3·y = 16

∴ x = (16 + 3·y)/(-8) = -2 - 3·y/8

x = -2 - 3·y/8

Equating the two equations of 'x', gives;

5 - y/2 = -2 - 3·y/8

7 = y/2 - 3·y/8 = (4·y - 3·y)/8 = y/8

∴ 7 = y/8

y = 7 × 8 = 56

y = 56


Related Questions

how do i open a door
please i've been trapped in this room for ages

Answers

Answer:

turn the door knob and push the door or say what kind of door knob it is and that might help to

Explanation:

Which plant supplements soll fertility and which plant is a source of nectar used by honeybees to make honey?

Answers

Answer:

Generally, soybeans supplement nitrogen in soil.

Any flowering plant produces pollen for honey production.

When something is plumb, it is
A. horizontally level
B. bobbed
C. exactly vertical
D. at a 30-degree angle

Answers

Answer:

  C. exactly vertical

Explanation:

"Plumb" means "exactly vertical."

Answer:

C

Explanation:

The definition of plumb can either be "vertically" or "exactly". In math, the definition of plumb is in face "exactly vertical".

Best of Luck!

Technician A says that empty hazardous waste drums may be disposed of in a public landfill.
Technician B says that using a funnel may help prevent spills when filling hazardous waste containers.
Who is right?
O A only
B only
Both A and B
O Neither A nor B

Answers

I think it would be B

Out of technician A and technician B, who are saying about hazardous waste drums. Technician B is correct. The correct option is B only.

What are hazardous waste containers?

Chemical waste is collected in suitable containers that can be properly closed. Infectious garbage is kept separate from regular trash in biohazardous waste bins.

Solid radioactive waste generated during radioisotope manipulation is stored in radioactive waste containers. Chart for Hazardous Waste Management: This label, which identifies the facility and waste information, must be placed on used hazardous waste containers.

Bucket liners with hazardous waste bucked labels: These are used to close and label bucket liners. Many industries have already developed methods for dealing with hazardous mercury waste. Waste collection methods in cities have become more efficient in the collection of mercury waste.

Therefore, the correct option is b, B only.

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Anna makes arrangements to reuse waste water that has been used in sinks and showers. Which term refers to the waste water that Anna reuses to conserve resources?
Anna reuses _____ to conserve resources.

This is for my Architecture class.

Answers

Answer:

Greywater.

Explanation:

Greywater is also known as sullage and it can be defined as any form of gently used wastewater derived from sources within a residential or office building such as showers, washing machines, bathroom sinks, bathroom tub, etc.

Generally, greywater or sullage is completely free of fecal materials (faeces) because it is independent from all toilet activities. However, greywater is not clean for direct use because it usually contains food particles, dirt, oil from dishes, hair, etc.

In this scenario, Anna makes arrangements to reuse waste water that has been used in sinks and showers. Greywater is a term which refers to the waste water that Anna reuses to conserve resources.

Therefore, Anna reuses greywater to conserve resources.

Suppose a pictorial drawing specified four circles with radii of 1.25 each. How might those circles be specified? 4 x 1.25 R1.25 x 4 4 x R1.25 1.25 x 4

Answers

Answer:R1.25 x 4

Explanation:

Never attempt to repair oxygen or acetylene cylinder:

Answers

Answer:

Never attempt to transfer acetylene from one cylinder to another. not act as a fire stop. Flashback arrestors serve this purpose. Only a qualified technician should repair a regulator.

Explanation:

1. What kind of engineer designs bridges?
Marine
Computer
Mechanical
O civil

Answers

Answer:

Mechanical

O civil

Explanation:

they are bodybuilders

How did the introduction of the strategic defense initiative (SDI) impact the Cold War between the United States and the Soviet Union?

Answers

Answer:

The Strategic Defense Initiative was ultimately most effective not as an anti-ballistic missile defense system, but as a propaganda tool which could put military and economic pressure on the Soviet Union to fund their own anti-ballistic missile system.

advantages and disadvantages for wind power electrical generation??

Answers

Answer:

advantages:

it doesnt cause as much pollution

in some areas wind is easily obtainable

disanvantages:

pricey

cant control wind

it's an eye sore making it bad for real estate

I NEED HELP ASAP
I DONT KNOW THE ANSWER
TO THIS
PLEASE HELP THIS IS IN EDGINUITY IN SOCIAL STUDIES

Answers

Answer:

A is continental polar and B Is maritime polar

Answer:
Point A : continental polar
Point B : maritime tropical


⚠️I mark BRIANLIST ⚠️The same engineering teams are able to design and develop the different subsystems for an airplane.
O True
O False

Answers

Answer:

False

Explanation:

Ri
M
R2
R3
7
.24V
osh
m
42
द a

Answers

Answer:

i dont know or care just need points right now

Explanation:

Information or signals entered into a computer system is

Answers

Logs.

Like data logs. Sometimes people make these logs to keep tabs on other people or to get important information put down somewhere that way it is saved and can be looked back upon later. Anytime someone makes an action on the computer, it makes a TMP file representing a log of what you want it to do before the computer quickly get's rid of the file.

-Ɽ3₮Ɽ0 Ⱬ3Ɽ0

What is engineering

Answers

Answer:

Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. In other words, Engineering is the use of science and math to design or make things.

Explanation:

Engineering is the application of Science and math problems

LEARNING ACTIVITY SHEET
Bantayan National High School
EIM 11- Summative Test for Q2 Week 3&4
Name:
Year and Section :
A. Direction: Select from he given choices the best answer. Write only the corresponding letter as your answer in the blank provided before the
number. Use this paper as your answer sheet.
1. It is used to test/check the continuity of the circuit.
a. Ohmmeter b. Ammeter c. Voltmetdewer d. Wattmeter
2. Is a physical device used to connect electronic test equipment to a device under test.
a. Test probes
b. Plug
c. Pen tester d. None of these
3. A device inserted to a convenience outlet to conduct electric current.
a. Plug b. Continuity tester c. Test light d. None of these
4. Is a stranded wire used to temporary wiring installation and commonly used in extension cord assembly.
a. Duplex cord
b. Plug
c. Bulb guard d. None of these
5. It is a pocket size tool used to test the line wire or circuit if there is a current in it.
a. Test light
b. Plug
c. Continuity tester d. None of these
6. An instrument used to measure the amount of electrical current intensity in a circuit.
a.) voltmeter b.)ammeter c.) micrometer d.) ohmmeter
7. A pocket-sized tool used to test the line wire or circuit if there is current in it.
a.) test light
b.) wire gauge
c.) ruler
d.) pull-push rule
8. A measuring tool used to measure the length of an object in centimeter in it.
a.) test light
b.) wire gauge
c.) ruler
d.) pull-push rule
9. It is used to measure the diameter of wires/ conductors in circular mils. It can measure small and big
sizes of wires and cables.
a.) voltmeter b.)ammeter c.) micrometer d.) ohmmeter
10. It is used to measure the voltage, resistance and current of a circuit. It is connected in parallel or series with the
circuit depending on what to measure.
a.) volt-ohm-milliameter b.) micrometer c.) ohmmeter d.) ammeter
11. It is a measuring tool used to measure length, width and thickness of short flat object and in sketching straight
linae​

Answers

Answer:

1. It is used to test/check the continuity of the circuit

a. Ohmmeter

2. Is a physical  device used to connect electronic test equipment to a device under test

a. Test probes

3. A device inserted to a convenience outlet to conduct electric current

a. Plug

4. Is a stranded wire used to temporary wiring installation and commonly used in extension cord assembly

a. Duplex cord

5. It is a pocket size tool used to test the line wire or circuit if there is a current in it.

a. Test light

6. An instrument used to measure the amount of electrical current intensity in a circuit

b. Ammeter

7. A pocket sized tool used to test the line wire or circuit if there is current in it.

a. Test light

8. A measuring tool used to measure the length of an object in centimeter in it

b) Ruler

9. It is used to measure the diameter of wires/conductors in circular mills. It can measure small and big sizes of wires

a. Micrometer

10. It is used to measure the voltage, resistance and current of a circuit. It is connected in parallel or series with the circuit depending on what to measure

a) Volt-Ohm-milliammeter

11. It is the measuring tool used to measure length, width and thickness of short object and in sketching straight line

Foot rule/ ruler

Explanation:

1. An Ohmmeter tests resistance of a circuit and therefore, indicates if the circuit has continuity (connectivity) by measuring the resistance to the current it sends through the circuit, while the circuit power is switched off

2. A test probe connects a testing equipment to a Device Under Test (DUT)

3. A plug is used to connect an electric appliance to the mains power supply by fitting it into the mains power outlet

4. A duplex cord is used for temporary wiring to supply power in an extension cord assembly

5. A test light is used to determine if a circuit has electric current flowing in it

6. An ammeter measures the amount of direct or alternating current flowing in a circuit

7. Test light is used to check the presence of an electric current in a circuit

8. A ruler is used to measure length and it is marked in cm or in

9. A micrometer measures the diameter of wires placed in between the anvil and spindle

10. A Volt-Ohm-Milliammeter (VOM), is also known as a multimeter that measures voltage, current, and resistance of a circuit

11. A foot rule/ ruler, measures the dimensions of objects that are flat and short

Someone please please help with this! I will mark brainliest if correct!!

Answers

resistor in series add  so the total resistance is 12 ohms

E=I x R   E = voltage, I = amps, R = resistance

12 = I x 12

I=1 is the answer to the question

E=I x R   E = voltage, I = amps, R = resistance

12 = I x 12

I=1 is the correct answer is the correct answer to the question

Are we living in a simulation!
True
False

Answers

false

i would hope:):):)
False for sure
I am happy to solve more

Training is a way for employers to provide ____ to enable employees to protect themselves and others from injuries.

Answers

Answer:

Training is a way for employers to provide tools to enable employees to protect themselves and others from injuries.

Explanation:

Answer:

The above answer is correct ✔️

A continuously variable transmission:
A) Can use the same fluid as any other automatic transmission
B) Needs transmission fluid exchanges much more frequently
C) Requires a transmission fluid specially formulated for CVT needs
D) Is the same as a step-gear transmission

Answers

Answer:

A continuously variable transmission (CVT) is an automatic transmission that can change seamlessly through a continuous range of gear ratios. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant RPM while the vehicle moves at varying speeds.that means the ans is A.

A continuously variable transmission requires a transmission fluid specially formulated for CVT needs. The correct option is C.

What is continuously variable transmission?

Because a CVT operates differently than a traditional step-gear transmission, it requires a unique type of transmission fluid that is formulated to meet its specific performance requirements.

CVT fluid helps to maintain the proper frictional properties of the transmission's belts and pulleys, as well as providing cooling and lubrication for the transmission components.

While CVT fluid should be changed at the manufacturer's recommended intervals, it does not have to be changed as frequently as the fluid in a traditional automatic transmission.

Thus, the correct option is C.

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State five applications of thermochromic materials

Answers

Explanation:

The end-use industries of thermochromic materials include packaging, printing & coating, medical, textile, industrial, and others. Printing & coating is the fastest-growing end-use industry of thermochromic materials owing to a significant increase in the demand for thermal paper for POS systems. The use of thermochromic materials is gaining momentum for interactive packaging that encourages consumers to take a product off the shelf and use it.

What is inertia?

Please help!!

Answers

Answer:

Explanation:

This tendency to resist changes in their state of motion is described as inertia. Inertia: the resistance an object has to a change in its state of motion. Moving objects, so it was believed, would eventually stop moving; a force was necessary to keep an object moving.

Basically inertia is like something that drives you to do something. It comes in many forms, as stated in a book (the book was Four, of the Divergent series), someone can be tempted to do something because it is what they are used to doing (comfortable with really).

-Ɽ3₮Ɽ0 Ⱬ3Ɽ0

Which phrase best describes the concept of computer numeric control?
А.
controlling the speed at which raw materials move
В.
controlling the movement of a machine tool
C.
controlling the number of products in a batch
D
controlling the amount of material used

Answers

B) controlling the movement of a machine tool

Answer:

B

click the picture to see the right answer hope this helps someone :)

The BARO sensor informs the PCM about changes in weather and ____________________.
A.road conditions
B.altitude
C.driving habits
D.day or night

Answers

B. Altitude

The barometric sensor reads the barometric pressure (the density of the atmosphere according to altitude and weather conditions)

Answer: The BARO sensor informs the PCM about changes in weather and B.altitude

Explanation: The barometric sensor reads the barometric pressure (the density of the atmosphere according to altitude and weather conditions). The barometric pressure (BARO) sensor works in conjunction with the manifold absolute pressure (MAP) sensor to provide constant pressure difference information to the PCM. Barometric pressure is the size of air strain in the atmosphere, in particular the size of the load exerted by way of air molecules at a given point on this planet. The Manifold Absolute pressure sensor performs 'double obligation' as a barometric stress sensor as soon because the key's turned on. With the key became on (prior to the engine starting) there is no vacuum inside the engine applied to the MAP sensor therefore its sign to the ECM will become a BARO studying useful in determining air density.

What type of engineering do you think would help solve this SDG???

Answers

Answer:

Explanation:

Planning engineering

When lubricating parts that do not have a grease relief port, inject grease until
A. The boot splits
B. Grease begins to escape from the base of the boot
C. The boot swells slightly
D. The part won't hold any more

Answers

Answer:

C. The boot swells slightly

Explanation:

Friction can be defined as a force that opposes the motion of an object in relation to another.

This ultimately implies that, friction is the opposition to the relative motion of two objects in contact. Therefore, lubrication (lubricants) are used to prevent friction between moving parts.

Generally, grease relief port are created by manufacturers of mechanical parts so as to prevent over-lubrication.

However, when lubricating parts that do not have a grease relief port, inject grease until the boot swells slightly so as to maintain the seal at the ball joints.

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