what is the solution to the system of equations? please help im struggling really bad ):

What Is The Solution To The System Of Equations? Please Help Im Struggling Really Bad ):

Answers

Answer 1

Answer:

[tex] - 11 \frac{1}{2} [/tex]

Step-by-step explanation:

8x + 5y = 7

4x - 5y = 11

If you all it all up we have

8x + 4x +5y - 5y = 18

12x=18

x=18/12=1.5=3/2 = 1 whole number 1 over 2(1 1/2)

subtituting the value of x into equation 1(8x + 5y = 7)

8(1.5) + 5y = 7

5y=7-12

5y = -5

y=-5/5

y= -1


Related Questions

Solve for x

9(x + 10) -99​

Answers

Answer:

9x - 9

Step-by-step explanation:

9(x + 10 ) -99

9x + 9 × 10-99

9x + 90-99

9x - 9

Answer:

9(x-1)

Step-by-step explanation:

9(x + 10) - 99​

=> 9x + 90 - 99

=> 9x - 9

=> 9(x-1)

Help me please answer thanks

Answers

Answer:

I think it would be each girl scored 2 points, and each boy only scored one. :)

-½ (6x + 4) + ½(8x - 2)

Answers

Answer:

-3x - 2 + 4x - 1 = x - 3

Step-by-step explanation:

open brackets and simplify

Answer:

x−3

Step-by-step explanation:

Hope this helps.

There are 20 students in the drama club. Next year, 5 students will leave the drama club and some students will join. If d is the number of students who will join the drama clibz write an expression to represent the total number of students in the drama club next year.

Answers

20-5dhsh HHS’s did hahah

The expression showing the number of students in the drama club the next year is 15+d.

What is an expression?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

Given that, there are 20 students in a drama club,

5 of them will leave in next year, and d students will join,

We are asked to construct an expression to represent the total number of students in the drama club next year.

So, the present number of students in the club = 20

After next year = 20-5 = 15

After the joining = 15+d

Hence the expression showing the number of students in the drama club the next year is 15+d.

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PLEEASE HELP!!! The triangle shown below has an area of 20 units 2 squared.

Answers

X = 5 unitsDouble-check:8 x 5 = 4040 ÷ 2 = 20Please let me know if I am wrong.

As a manager in a flooring store, you respond to a customer’s inquiry regarding available sizes of square tiles. The customer needs square tiles that measure 1.5 feet on each side. Your store sells square tiles with lengths measured in centimeters. What is the side length, in centimeters, of a square tile that measures 1.5 feet on each side, rounded to the nearest hundredth?

Answers

Answer:

Step-by-step explanation:

1.5ft(12in/ft)(2.54cm/in)=45.72cm

The volume of a cone, V , varies jointly with its height, h , and the square of its
radius, r . If k is the constant of proportionality, which of the following equations
represents the correct relationship between volume, radius, and height?

Answers

An equation is formed of two equal expressions. The equation that represents the correct relationship between volume, radius, and height is V=khr².

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given the volume of a cone, V varies jointly with its height, h, and the square of its radius, r. Therefore, the relationship can be written as,

V ∝ h(r²)

Also, k is the constant of proportionality, therefore, the equation now can be written as,

V = k×h×r²

Hence, the equation that represents the correct relationship between volume, radius, and height is V=khr².

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What is 35% of 130 write your answer in

Answers

Answer:

45.5

Step-by-step explanation:

....................

Can someone give me the answer please it would mean a lot!

Answers

Answer:

It can be written as:

(9m)(9m)(9m)(9m)

Step-by-step explanation:

I need help with this somebody please help me!!

Answers

Answer:

Y=m6-6

Step-by-step explanation:

Original equation for slope-intercept.

Y=MX+B

Substitute given values

X=slope

B= Y-intercept

Given slope:

6

Given y intercept:

-6

Simply plug in given values into the original equation

y=m6-6

What’s the slope to this graph?

Answers

Answer:

1

Step-by-step explanation:

rise/run = 1/1 = 1

8. Write an inverse variation equation relating x and y when x = 18 and y = 4.5. (64) help pliz​

Answers

Answer:

answer are

a.k=13.5;13.5y=x

b.k=1.5;y=1.5x

c.k=1.5;y=1.5/x

d.k=13.5;xy=13.5

ILL GIVE YOU BRAINLIEST!!!The sum of two numbers is 58. The difference between the same two numbers is 6. Find the two numbers.
Grupo de opciones de respuesta

x=10 y=15

x= 30 y=25

x=16 y=21

x= 32 y= 26

Answers

Answer:

the last one

Step-by-step explanation:

32+26=58

32-26=6

Answer:

The first number is 32 and the second is 26

Step-by-step explanation:

Let the two numbers be represented by x and y

1) x + y = 58

2) x - y = 6

x = 6 + y, we'll use put this in the first equation.

x + y = 58

6 + y + y = 58

6 + 2y = 58

2y = 58 - 6

2y = 52

2. 2

y=26, now let's find x, again use the first equation

x + y = 58

x + 26 = 58

x = 58 - 26

x = 32

Can someone please check my answer??!

Answers

Answer:

gj its correct

Step-by-step explanation:

2x+45-56=9x+54+23
Solve for x please

Answers

Answer:

x = -12.57

Step-by-step explanation:

2x + 45 - 56 = 9x + 54 + 23

2x - 11 = 9x + 77

-11 = 7x + 77

-88 = 7x

x = -12.57

It would probably be X=-12.57

3. A box of oranges weighs 4 kg. If one orange weighs 80 g, how many oranges are in the box?

Answers

Answer: 50 oranges

Step-by-step explanation:

1 kg = 1000 g - 4 kg = 4000 g 4000g/80g= 50 (This gives the number of oranges in the box since each orange weighs 80 grams.)

will mark brainliest and rate 5/5

Answers

Answer:

20, 250

Step-by-step explanation:

just search up surface area of a square pyramid, enter the width, length, and height and it should give you: 20,250

Please help need the answer now!!

Answers

Answer:

B

Step-by-step explanation:

A function can not have the same x-values but can have the same y-values. Because option B uses 0 as its x-value more than once, option B does not represent a function.

If this answer has helped you, please mark it as brainliest

help pls i really need to get my grade up

Answers

Answer: 0 < x < 5.6

Step-by-step explanation:

The sides of triangle:

Any two sides added together have to be larger than the third side

So:

2.8 - 2.8 < x < 2.8 + 2.8

0 < x < 5.6

GUYS PLEASE HELP ME IF YOU GET IT RIGHT I WILL MARK BRAINLIEST

Answers

the slope is 1/3 i believe

Answer:

The slope is 1/3

Step-by-step explanation:

I am going to use points (10,20) and (40,30)

m = rise/run = 10/30

simplify (divide by 10)

1/3

plz mark as brainliest if correct!

6. Find the height of the brace.

Answers

Answer:

Brace girders

As a horizontal link between foundations or pile heads, the braces are dimensioned with the relationship between free span and the height of the beam, L / h <10, preferably 7, but the height should not be less than 40 cm.

100 POINTS

At what point do the lines represented by the equations y=3x+1 and y=−2x−8 intersect?A.(1,−8)
B.(−7,−20)
C.(2,−3)
D.(−95,−225)

Answers

Answer:

d

Step-by-step explanation:

It could be B hope it is right

3. Find any three rational numbers between 1/2 and 3/2​

Answers

Answer:

[tex] \frac{2}{3} \\ \\ \frac{2}{2} \\ \\ \frac{4}{3} [/tex]

Step-by-step explanation:

I hope that is useful for you :)

Answer:

For example 1/1, 2/3 and 4/3

Step-by-step explanation:

There is a great way to generate rational numbers between other rational numbers using:

[tex]\textrm{If:~~~~~~} \frac{a}{b} < \frac{c}{d}\vspace{7pt}\\\textrm{Then:~} \frac{a}{b} < \frac{a+c}{b+d} < \frac{c}{d}[/tex]

So we know that (1+3)/(2+2) is between 1/2 and 3/2 without checking.

(1+3)/(2+2) = 1/1, so we got our first rational number.

Lets continue by finding numbers between 1/2 and 1/1; and 1/1 and 3/2

(1+1)/(2+1) = 2/3

(1+3)/(1+2) = 4/3

We could also look for a number between 1/2 and 2/3 and find

(1+2)/(2+3) = 3/5

And so on, so forth :)

Using the graph , determine the coordinates of the vertex of the parabola

Answers

Answer:

(-4,-4)

Step-by-step explanation:

Delta math

According to graph, the coordinates of the vertex of the parabola are (-4,-4).

What is parabola?

"A parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped."

Vertex of parabola

"The vertex of a parabola is the point at the intersection of the parabola and its line of symmetry. For a parabola whose equation is given in standard form, the vertex will be the minimum (lowest point) of the graph and the maximum (highest point) of the graph.

After analysing the graph, the vertex of the parabola are (-4,-4)

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18).

Find mZBCA.
B
(5x + 12)
[.
(9x + 1)
А
(10x – 37)°

Answers

Answer:

m∡BCA = 57°

Step-by-step explanation:

find 'x' by adding all expressions and setting them equal to 360°

9x+1 + tx+12 + 10x-37 = 360

24x = 384

x = 16

Substitute 16 into 10x-37

160 - 37 = 123

m∡BCA is supplemental with 123°, therefore it measures 57°

. A dice is thrown once. Find the probability of getting (i) An even number (ii) a number greater than 6​

Answers

Answer: (i) 1/2 (ii) 0

Explanation:

(i) 1, 2, 3, 4, 5, 6 (numbers on a dice)
2, 4, 6 (even numbers on a dice)
3/6 is the probability of rolling an even number
3/6 = 1/2
1/2 is the probability of rolling an even number
(ii) there is no number greater than 6 on a dice

find the value of x in each triangle. show your work on a separate piece of paper

Answers

Answer:

x = 65

Step-by-step explanation:

straight line = 180 degrees

so

180 - 165 = 25

90 + 25 = 115 degrees

180 - 115 = 65 degrees

so

x = 65

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

What is the value of 1/2 + (-5/6) +1/4?
A. -7/12
B. - 1/12
C. 1/12
D. 1 7/12​

Answers

Answer:

B. - 1/12

Step-by-step explanation:

can you make me brainliest

The x coordinate of the vertical intercept is always zero. For example, a line that crosses they axis at -6 has a vertical intercept of (0 - 6) true or false

Answers

Answer:

true

Step-by-step explanation:

Please help me I don’t understand it

Answers

Answer:

Step-by-step explanation:

It is a right triangle, so use the Pythagorean Theorem to solve for x.

x² +  8² = 11²

x² = 11² - 8² = 57

x = √57

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