x — бу + 2x = 5 2x – 3y+z = 4 3х +4y - z = -2


help on how to do it , its about substitution. ​

Answers

Answer 1
Solve the following system of equations for x: 4x + 6y = 68 2x + 6y = 76  A. x = - 14 B. None of these. C. x = - 4 D. x = 14 E. x = 4
Top answer · 3 votes
option C is correct More

Related Questions

A small box of cereal contains 10 cups of cereal. A medium box of the same cereal contains 30% more cereal than the small box. How many cups of cereal does the medium box contain?

-------Cups

Answers

Answer:

13 cups

Step-by-step explanation:

If the small box has 10 cups, then:

(small)     10 cups   =   100%

(medium)    x cups     =   130%

Now, cross multiply:

10 (130) = x (100)

1300 = 100x

x = 13

Another way to solve this is by turning 30% into a decimal:

30/100 = 0.3

10 (0.3) = 3

Now you have 30% of the 10 cups, but you need 30% more than the small box, so:

10 + 3 = 13 cups

Help me solve this problem please

Answers

Answer:

Step-by-step explanation:

d

WILL GIVE BRAINLIEST IF CORRECT

Answers

Answer:

la respuesta correcta es laC

han ku po ammo paumahin

Chandler wants to start saving money for vacation. She currently has $300 in her bank account and plan to save $100 more each month until she reaches her goal of $1500. How long will chandler have to save until she can afford her vacation.

(write equation in y=mx+b)

Answers

1500=100x + 300
X = (1500-300)/100 = 12 months
Yeah i agree with this question it made good points

d) 48 + (6 + 2) =
Please help I am stupid at maths!

Answers

48+(6 + 2)

You first add the numbers in the parentheses so 6+2 =8

That leaves 48+8

The final answer would be 56

Hope this helped :)

Answer:

= 48 + 8

= 56

Step-by-step explanation:

hope its helps

good luck

Which steps should be followed to write an equivalent ratio to find 2% of 6700? Write 2% as the ratio StartFraction 200 Over 100 EndFraction. Write the equivalent ratio StartFraction question mark Over 6700 EndFraction. (100)(67) = 6700, so (20)(67) = 1340. Write 2% as the ratio StartFraction 20 Over 100 EndFraction. Write the equivalent ratio StartFraction 6700 Over question mark EndFraction. (20)(335) = 6700, so (100)(335) = 33,500. Write 2% as the ratio StartFraction 2 Over 100 EndFraction. Write the equivalent ratio StartFraction question mark Over 6700 EndFraction. (100)(67) = 6700, so (2)(67) = 134. Write 2% as the ratio StartFraction 2 Over 100 EndFraction. Write the equivalent ratio StartFraction question mark Over 6700 EndFraction. (100)(6.7) = 6700, so (20)(6.7) = 13.4

Answers

Answer:

Step-by-step explanation:

To evaluate the expression 2% 0f 6700, we can follow the steps;

2% = 2/100

6700 = 67(100)

2% of 6700 = 2/100 * 67(100)

The 10 at the numerator will cancel out that at the denominator

2/100 * 67(100) = 2(67)

2(67) = 134

Answer:

Write 2% as the ratio 2/100. Write the equivalent ratio_?_ . (100)(67)= 6700, so (2)(67)=134

6700

Step-by-step explanation: Just did it on edg 2020. IF THIS HELPS IT IS C.

z=m-a-b, for a PLS ASAP

Answers

Answer:

a=m-b-z

Step-by-step explanation:

Answer:

a = -z + m -b

Step-by-step explanation:

Sorry my handwriting is a bit messy,  but hopefully it helps. Have a great day!

Simplify 9 to the 2nd power\ 9 to the 7th power

Answers

Answer:

9^2/9^7 = 9^-5

Step-by-step explanation:


There are 5 number cards labeled 1 through 5. What is the probability and its complement of randomly drawing a card from this set that is more than 47

Answers

Answer:

impossible you cant get one that is over 5 if it only goes to 5

Step-by-step explanation:

What is the distance in coordinate units between 2+6i and -4+3i in the complex plane

Answers

Answer:

lafante

Step-by-step explanation:

Distance in co ordinate units is √27  .

Given,

2+6i and -4+3i in the complex plane

To get distance between these numbers we have to find modulus of their difference:

z = z1 - z2 = (-4 + 3i) - (6i + 2) = -6 -3i

So, distance

d = |(-6 -3i)|

Finding the magnitude of the complex plane obtained ,

= √-6² + (-3i)²

=√27 .

Thus the distance between two complex plane is √27 .

Know more about complex plane,

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Which ordered pair is in the solution y>=1/3x+4

A. (-6,1)
B. (1,-6)
C. (6,-1)
D. (-1,6)

Answers

A the answer I think
I think it would be A

Are the lines parallel? y = x + 4 and y = x-2

A. yes, they have the same slope and a different y-intercept
B. no, they are not parallel​

Answers

Answer:

A

Step-by-step explanation:

Remember that parallel lines have the same slope.

The y-intercept does not matter.

We have the two equations:

[tex]y=x+4[/tex]

And:

[tex]y=x-2[/tex]

The slope is the coefficient in front of the x.

In the first equation, we can rewrite it as:

[tex]y=(1)x+4[/tex]

Therefore, the slope of the first equation is 1.

Similarly, for the second equation, we can rewrite it as:

[tex]y=(1)x-2[/tex]

The slope of the second equation is also 1.

Therefore, since their slopes are equivalent, they are parallel.

Thus, our correct answer is A.

Can someone send me the answer to the question in the photo? (with solutions)

Answers

Answer:

This is so easy question .

I can do.

Describe how the value of the digit 2 changes in each place in the number 22.222.

Answers

The value of 2 is either multiplied by or divided by 10 depending on if you go left or right. Going left multiplies by 10 and right divides by 10. So the 2 farthest left represents 20, which means the 2 just to the right is 20 divided by 10, which is 2.

Answer:

ones, ten, hundreds, thousands, ten thousand, ect.

on the right side of the decimal represents a part of a number Ex. .222 is equal to 222/1000 of a number.

help me please :)))))

Answers

Answer:

p=2/3 mn

p/n=2/3 m(

(3)p/n=2/3(3)m

3p/n=2m

3p/2n=2m/2

3p/2n=m (letter B)

HELP ASAPPPP Aleisha works for a company with over 1,000 employees, of whom 81% have pierced ears. Every year, each employee draws another employee's name and gives them a gift. Let T be the number of names Aleisha draws until she draws an employee's name who does not have pierced ears.

What type of variable is T?
a.Neither
b.Geometric random variable (Do until successful)
c.Binomial random variable (FIXED # of trials before experiment)

Answers

Answer: Geometric

Step-by-step explanation:

Because you do trails until it is successful

What is the answer?
2500/x+20
=2500/(48.59)+20

Answers

The answer would be 71.45

The formula to convert °F to °C is C = C equals StartFraction 5 Over 9 EndFraction left-parenthesis F minus 32 right-parenthesis.(F – 32).

Convert 50°C to °F.

Answers

Answer: 122°F

Step-by-step explanation:substitute 50°C anywhere in the formula that has the C

The cost of using a telephone in a hotel meeting
room is $0.20 per minute. Which of the following
equations represents the total cost in dollars, for
h hours of phone use?

Answers

so its 12 dollars an hour

x means the cost

12(h)= x

Answer:

c = 0.20 (60h)

Step-by-step explanation:

The hotel charges $0.20 per minute to use the meeting‑room phone.  This per‑minute rate can be converted to the hourly rate using the conversion 1 hour =60 minutes, as shown in the following equation.

​[tex]\frac{0.20}{minute}[/tex]  × [tex]\frac{60 minutes}{1 hour}[/tex] =[tex]\frac{0.20 * 60}{hour}[/tex]

Thus, the hotel charges 0.20×60 per hour to use the meeting‑room phone.

Therefore, the cost c, in dollars, for h hours of use is c=(0.20×60)h which is equivalent to c=0.20(60h).

graph linear equations

I'm confused on how to do this problem... How do you do this problem the correct way because I can't figure it out ​

Answers

use desmos.com! it will automatically graph it for u and its free.

Solve the equation using the Properties of Equality.

1/2y +1/3 = 2/3

y= ?

Answers

The answer would be that Y equals 12


Jon is stuck on the side of a cliff. Jon is at the midpoint from the ground to the top of the
cliff. Jon is 40 + 2 feet away from the bottom of the cliff. The cliff is 200 feet tall.
Solve for x.
How far is Jon from the top of the cliff

Answers

Complete question is;

Jon is stuck on the side of a cliff. Jon is at the midpoint from the ground to the top of the cliff. Jon is 40 + 2x feet away from the bottom of the cliff. The cliff is 200 feet tall.

Solve for x.

How far is Jon from the top of the cliff

Answer:

x = 30 ft

Jon is 100 ft from the top of the cliff

Step-by-step explanation:

We are told that Jon is at the mid point of the Cliff.

Since The cliff is 200 feet tall, the Jon is; 200/2 ft = 100 ft from either the top or bottom.

Now, we are told that Jon is 40 + 2x from the bottom of the cliff.

Thus;

40 + 2x = 100

Subtract 40 from both sides;

40 - 40 + 2x = 100 - 40

2x = 60

x = 60/2

x = 30 ft

And Jon is 100 ft from the top of the cliff as earlier seen

After completing the fraction division 5 divided by five-thirds, Miko used the multiplication shown to check her work. 3 times five-thirds = StartFraction 3 Over 1 EndFraction times five-thirds = StartFraction 15 Over 3 EndFraction or 5 Which is the most accurate description of Miko's work?

Answers

Step-by-step explanation:

5 divided by five-thirds can be written in the fractional form is as follows :

[tex]\dfrac{5}{\dfrac{5}{3}}[/tex]

It can be also written as :

[tex]\dfrac{5}{\dfrac{5}{3}}=5\times \dfrac{3}{5}\\\\=3[/tex]

He has done calculations as follows :

3 x 5/3=3/1 x 5/3 = 15/3 or 5

Miko was wrong in the first step where he multiplied 3 by (5/3). It should be 5 multiplied by (3/5). He has done multiplication incorrectly.

Answer: A

Step-by-step explanation: i took the test

URGENT!!! DUE IN A FEW MINS!1!1 PLS HELP ASAP GUYS

















hehe lol jk
thx 4 showing up anyway
if this were a real question, i know you guys would have my back :-)
i l o v e y o u <3 LSKDJIGEFHJUKJJLOL

Answers

aaa I thought this was a question and was ready to get into full answering mode lol

Sales tax is calculated as a percentage of the sales price. If sales tax is 6%, what is the sales tax on clothing that costs $180? (3 points)

a
$6.00
b
$9.80
c
$10.80
d
$18.60

Answers

Answer:

it is c $10.80

  

The sales tax on clothing that costs $180 is $10.80 with 6% sales tax. The correct answer is option c.

Given that:

The cost of cloth is $180.

Sales tax is 6%.

To calculate the sales tax on clothing that costs $180 at a rate of 6%, follow these steps:

Convert the sales tax rate to a decimal: 6% = 6/100 = 0.06

Sales tax can be calculated by using the formula given below:

Sales tax = Cost of clothing × Tax rate

Multiply the clothing cost by the sales tax rate to find the sales tax amount:

Sales tax = Cost of clothing × Tax rate

Sales tax = $180 × 0.06 = $10.80

Hence, the required value is $10.80. The correct answer is option c.

Learn more about Tax here:

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2/5(10x+25)
Simplify
Brainly

Answers

Answer:

4x+10

Step-by-step explanation:

What is the answer??

Answers

Answer:

A

Step-by-step explanation:

X=20
5x-40=60
Its the answer

6248 divided by 38
Quotient:
Remainder:

Answers

Quotient: 164
Remainder: 8/19

A fruit bowl contains 2 bananas, 5 oranges, and 4 apples in the simplest form, what is the ratio of apples to bananas in the fruit bowl?

Answers

Answer:

Ratio of apple to banana is 2:1

Step-by-step explanation:

To find ratio of x type of one thing and y type of other thing we divide

x by y and ratio is written as

ratio = x:y

_________________________________

Number  of banana = 2

Number  of apples = 4

Ratio of apple to banana = Number  of apples :Number  of banana

Ratio of apple to banana = 4:2

since 4 is divisible by 2 , to get the ratio in simplest form

we divide both numerator and denominator by 2

Ratio of apple to banana = 4/2:2 /2 = 2:1

Thus,

Ratio of apple to banana is 2:1

7(y-2)=7y-14 I’m kinda confused

Answers

Answer:

Infinitely many solutions

Step-by-step explanation:

Equation:

7(y-2)= 7y - 14

1. Simplify each side

7y - 14 = 7y - 14

Infinitely many solutions

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