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ser-zykov [4K]
3 years ago
12

I really need help thank you

Mathematics
1 answer:
lukranit [14]3 years ago
7 0

x^2 =144 has 2 solutions

x=sqrt(144)

x=+-12

x= 12 and x=-12

12*12 = 144 and (-12) * (-12) = 144

a square root has 1 positive and 1 negative solution

x^3 = 27

(x^3)^(1/3)=(27)^(1/3)         ^(1/3)  is the cube root

x = 3

it only has one solution because a negative * a negative * a negative would be negative

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Please help I really need help because I have to turn it in soon and yeah so comment
BartSMP [9]

Answer:

hi

Step-by-step explanation:

4- 3*1=3

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3+0.06= 3.06

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7- 3.3, 3.30

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for #4-5 just put the number of 0s in the denominator of the fraction for the answer

3 0
3 years ago
Simplify (1-6)(-4-7)​
lakkis [162]

Answer:

I’m guessing you subtract the numbers from the inside of the parenthesis and then multiply the two.

(-5)(-11) = 55

I hope this is correct.

7 0
3 years ago
If 4/5 of the population of a certain town is
kkurt [141]

Hi! I'm happy to help!

Our town is composed of 2,000 people. Of those 2,000 people, 4/5 of them are middle class. The word 'of' usually means multiplication when it is in a word problem. So, we will multiply 2,000 by 4/5. When multiplying a whole number, we just multiply it by the numerator (top) and leave the denominator. (bottom)

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Fractions are just a different way of putting division, so we can change this to a division problem:

8,000÷5=

1,600

1,600 of the people are middle class.

I hope this was helpful, keep learning! :D

8 0
3 years ago
If cosX = -0.2, and x is in quadrant II, then what it the value of sinX​
Tems11 [23]

\sin x>0 when x is in quadrant II, so

\cos^2x+\sin^2x=1\implies\sin x=\sqrt{1-\cos^2x}=\sqrt{1-(-0.2)^2}\approx1.02

7 0
3 years ago
Read 2 more answers
Solve.
Karo-lina-s [1.5K]

Answer:

2/5=0.4

0.4*11.25=4.5

Step-by-step explanation:

3 0
3 years ago
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