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34kurt
3 years ago
9

Help me on all these questions (picture added)

Mathematics
1 answer:
Alchen [17]3 years ago
8 0
7. -9
8. -10
9. -60
10. -70
11. 300
12. -145
13. -1650
14. -1000
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2) A construction contractor used the equation 11.52=(1.44)8 to
Rina8888 [55]

Answer:

2.88

Explanation:

If you break down the equation we see that 8 is the number of boxes and 1.44 is the price of each box. So if you wanted to change the equation the formula would be: (1.44)x = cost so if you wanted to figure out how much 2 boxes would be, you just plug in 2 for x and you get (1.44)2 = 2.88

5 0
3 years ago
Solve the equation by completing the square. If necessary, round to the nearest hundredth.
diamong [38]
Ax^2+bx=c
REMEMBER THIS

ok
first, make sure that a is 1
done

now take 1/2 of b and square it

-18/2=-9, (-9)^2=81
add that to both sides

x²-18x+81=19+81
x²-18x+81=99
factor perfect square
(x-9)²=100
square root both sides
don't forget positive and negative root
x-9=10
x-9=-10
ad 9 to both sides

x=19
x=-1




answer is -1; 19

2nd choice is answer
8 0
3 years ago
Read 2 more answers
What is three fourths multiplied by five?
Savatey [412]
3/4 times 5=
5 times 3=15
15/4=3 3/4
3 3/4 is answer
7 0
3 years ago
Read 2 more answers
F(x)=x^2-2.g(x)=4x-2
Alex777 [14]

Answer:

Step-by-step explanation:

f(x) = x²-2

g(x) = 4x-2

f.g(x)= x²-2(4x-2) = x²(4x-2)-2(4x-2) = 4x³-2x²-8x+4

f.g(x) =  4x³-2x²-8x+4

7 0
3 years ago
A pencil box contains five
KonstantinChe [14]

Answer:

red pencil=5/24

yellow pencil=6/24

Blue pencil=8/24

Orange pencil=3/24

purple pencil=2/24

5 0
3 years ago
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