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ExtremeBDS [4]
3 years ago
8

Problems 7-15 Simplify each expression. 20 points

Mathematics
1 answer:
Nitella [24]3 years ago
7 0

Answer:

7. k^4

8. m^6

9. 18x^4

10. 35u^8v^4

11. 6561

12. x^6 y^24

13. 16a^6 b^11 c^2

14. -8f^5 g^6 h^5

15. 81p^9 t^10

Step-by-step explanation:


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malfutka [58]

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The spinner is 4 times more likely to land on black.

There were 72 black spins compared to 18 white spins.  This means there were 4 times more black spins than white spins; this means the spinner is not equally likely to land on either co

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3 years ago
El lote de la familia lópez tiene un lote de 16m*10m y se desea construir una casa de base rectangular en el centro de el.¿que d
Fynjy0 [20]
The dimensions of the house should be 7 m by 13 m.

If the house is to be centered, we will take the same amount from the width as we do from the length of the lot for the dimensions.  This gives us (10-x) and (16-x) as the dimensions.

The area of a rectangle is found by multiplying the length and width:
(10-x)(16-x) = 91

Multiplying the binomials we have:
10*16 - x*10 - x*16 -x*(-x) = 91
160 - 10x - 16x --x² = 91
160-10x-16x+x² =91

Combine like terms:
160-26x+x²=91

Rewrite this in standard form:
x²-26x+160=91

Subtract 91 from both sides:
x²-26x+160-91 = 91-91
x²-26x+69 = 0

Factoring this, we look for factors of 69 that sum to -26.  -23*-3 = 69 and -23+-3 = -26, so:

(x-23)(x-3) = 0

Using the zero product property we know that either x-23=0 or x-3=0, so x=23 or x=3. 

x was the amount we take off of the width and length of the lot; if we took 23m off of it, 10-23 gives us a negative amount, which is not realistic. This means both the width and length are subtracted by 3.

10-3 = 7 and 16-3 = 13.

These are the dimensions of the house.
7 0
3 years ago
I need serious help ASAP!!!!!!
kicyunya [14]

Answer:

Step-by-step explanation:

the first one

4 0
3 years ago
Solve using substitution <br> y= x+4<br> x-y= -4
never [62]
X-(x+4)=-4

X-x-4=-4
-4=-4

All real numbers
6 0
3 years ago
Hurry will give brainliest
AlexFokin [52]

Answer: B

Step-by-step

<2 with the underline that mean that it can go up or down q

the <2t it goes up and -4 it goes down

remember that negative it goes down the line the positive it goes up

5 0
3 years ago
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