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Archy [21]
3 years ago
5

If u can help me and show work plzzz!!!

Mathematics
1 answer:
MakcuM [25]3 years ago
7 0

Answer:

A; C

Step-by-step explanation:

x = (1/2)(125 - 27) -->

x = (1/2)(98) -->

x = 49 (A)

_________

x = RS -->

(x+2)(2) = (3+5)(3) -->

2x + 4 = 9 + 15 -->

2x = 9 + 15 - 4 -->

2x = 20 -->

x = 10 (C)

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What is the direct variation equation for the table of ordered pairs?
Nastasia [14]
Hi.

x = 10
y = 12

I got the answer because the the first row down is just the 10 times table. 10, 20, 30, 40. The second row down is the 12 times table. 12, 24, 36, 48. 

Hope this helped!
Have a great day :)
3 0
3 years ago
Read 2 more answers
What is the area of a square with a 80 ft. Perimeter
slega [8]

Answer:

400 sq. ft.

Step-by-step explanation:

We gotta find the length of a side:

First, we divide 80 by 4, because the perimeter of a square is (4 x side):

80 ft. / 4 = 20  ft.

Second, we doing the normal area of a square equation:

20^{2} = 400 square ft.

Which leads to out answer of 400 sq. ft.

5 0
3 years ago
Help please. Thanks in advance
anygoal [31]
Since they want only the coordinates of the vertices. You only care about where the lines intersect, the greater than, less than signs are irrelevant.

Get each equation in 'y=mx+b' form
1)  y = -x + 9
2)  y = 2x-21
3)  y = -4x +15

Now you can set any 2 equations equal to each other and solve for 'x'.
This will be the 'x' coordinate of the point where the 2 lines intersect.
You need 3 points, so you will need 3 different sets of 2 equations:

1) = 2)
2x -21 = -x+9
3x = 30
x = 10  -----> y = -(10)+9 = -1


1) = 3)
-x+9 = -4x+15
3x = 6
x = 2  -------> y = -(2) + 9 = 7

2) = 3)
2x - 21 = -4x+15
6x = 36
x = 6  ---------> y = 2(6) -21 = -9

Therefore the 3 intersecting points are:
(10,-1)
(2, 7)
(6, -9)
6 0
3 years ago
Draw the image of ∆ABC under the dilation with scale factor 3 and center of dilation (-5, -4).
natima [27]

The image of Triangle ABC have coordinates as

A'(-2,5)

B'(-2,-1)

C'(7,-1)

Step-by-step explanation:

The figure show that Points A(-4,-1),B(-4,-3) and C(-1,-3) forms the Triangle ABC

It is asked to scaled the triangle with scale factor of 3 and centered at P(-5,-4)

For point A(-4,-1) :

Distance of A(-4,-1) from center P(-5,-4) in x-direction is 1 units and y-direction is 3 units

After scale by factor of 3,

Distance of A(-4,-1) from center P(-5,-4) is also multiply by 3

New distance in x-direction is 3 units and 9 units in y-direction from center P(-5,-4)

Therefore, New location A' is ((-5)+3,(-4)+9)=(-2,5)

For point B(-4,-3)

Distance of B(-4,-3) from center P(-5,-4) in x-direction is 1 units and y-direction is 1 units

After scale by factor of 3,

Distance of B(-4,-3) from center P(-5,-4) is also multiply by 3

New distance in x-direction is 3 units and 3 units in y-direction from center P(-5,-4)

Therefore, New location B' is ((-5)+3,(-4)+3)=(-2,-1)

For point C(-1,-3)

Distance of C(-1,-3) from center P(-5,-4) in x-direction is 4 units and y-direction is 1 units

After scale by factor of 1,

Distance of C(-1,-3) from center P(-5,-4) is also multiply by 3

New distance in x-direction is 12 units and 3 units in y-direction from center P(-5,-4)

Therefore, New location C' is ((-5)+12,(-4)+3)=(7,-1)

Therefore, The image of Triangle ABC have coordinates as

A'(-2,5)

B'(-2,-1)

C'(7,-1)

5 0
3 years ago
Penny charges $5 per hour for babysitting, plus a flat fee of $12 for her travel expenses. Charlene charges $3 per hour for baby
sweet [91]

Answer: 5x+12=3x+18

Step-by-step explanation: let x = hours worked

Penny earns $5/hour + $12 fee so 5x+12

Charlene earns $3/hour + $18 fee so 3x+18

They are going to earn the same thing so 5x+12=3x+18

7 0
3 years ago
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