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ivanzaharov [21]

3 years ago

8

What is the sum of -3^2-7x+9and -5^2+6x-4

1 answer:

victus00 [196]3 years ago

6 0

Answer:

9-7x+9+25+6x-4=47-x

Step-by-step explanation:

You might be interested in

The length of the midsegment of a triangle is always half the length of the side it is parallel to true or false

Vladimir [108]

True. The midsegment of a triangle is halfway up the triangle, and since the top half and the full triangle are similar triangles, its dimensions are proportional.

This means half the height will give half the base (midsegment). So the midsegment is always half the length of the side it's parallel to.

3 0

3 years ago

Using what you have learned about solving systems of equations, find the number that represents the apple, banana, and cherry.

sineoko [7]

Answer:

$Apple \to 4$

$Banana \to 4$

$Cherry \to 5$

Step-by-step explanation:

Given

$A \to Apple$

$B \to Banana$

$C \to Cherry$

From the rows, the equation is:

$B + 2A =12$ --- (1)

$2B + C = 13$ --- (2)

$A + 2C = 14$ --- (3)

Make A the subject in: $A + 2C = 14$

$A = 14 -2C$

Substitute $A = 14 -2C$ in $B + 2A =12$

$B + 2(14 - 2C ) = 12$

$B + 28 - 4C = 12$

Make B the subject

$B = 4C - 28 +12$

$B = 4C -16$

Substitute $B = 4C -16$ in $2B + C = 13$

$2(4C - 16) + C = 13$

$8C - 32 + C = 13$

Collect like terms

$8C + C = 13+32$

$9C = 45$

Divide by 9

$C = 5$

Recall that:

$B = 4C -16$

$B =4*5-16$

$B =20-16$

$B =4$

Recall that:

$A = 14 -2C$

$A= 14 -2*5$

$A= 14 -10$

$A =4$

Hence:

$Apple \to 4$

$Banana \to 4$

$Cherry \to 5$

3 0

3 years ago

3x<img src="https://tex.z-dn.net/?f=3x%5E%7B2%7D%20%3D27" id="TexFormula1" title="3x^{2} =27" alt="3x^{2} =27" align="absmiddle"

Kitty [74]

Answer:

3x3^2=27 but 3 x 9=27

what are you asking???

8 0

3 years ago

Read 2 more answers

Are two of the same looking triangle but different sizes mean they are congruent?

densk [106]

Answer:

No

Step-by-step explanation:

They are similar

3 0

3 years ago

Read 2 more answers

Ben frank is an electrician who installs lighting fixtures. He charges (in dollars) his clients 15h+40f15h+40f15, h, plus, 40, f

mestny [16]

Answer:

$465 is the answer.

Step-by-step explanation:

The equation is given as :

$15h+40f$

Where h is the number of hours worked and f is the number of fixtures installed.

We have been asked how much does Ben frank charge when he works 7 hours and installs 9 fixtures?

So, we will put the values of h 7 and f = 9 in the equation.

$15(7)+40(9)$

= $105+360$

= $465

Therefore, Ben charges $465.

6 0

3 years ago