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3 years ago

What is -9 to the second power

Mathematics

2 answers:

OLEGan [10]3 years ago

4 0

-9 to the second power will most likely be 81. A negative x a negative equals a positive. Hope this helped.

Kamila [148]3 years ago

3 0

Answer:

$-9^{2} = 81$

Explanation:

Since you have to square -9 twice, you get 81 because $-9*-9=81$ .

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Factor. (help plz!) x^2+7x+10

yawa3891 [41]

Answer:

$(x + 5) \times (x + 2)$

Step-by-step explanation:

${x}^{2} + 7x + 10$

${x}^{2} + 5x + 2x + 10$

$x \times (x + 5) + 2(x + 5)$

$(x + 5) \times (x + 2)$

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3 years ago

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Solve by graphing 2x+4y=8 2x-y=2 point to where they intersect ( , )

miss Akunina [59]

I recommend going to desmos graphing calculator and put those in and it should show

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3 years ago

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Plz show your work

andrew11 [14]

Answer:

9/5 (-8) > = F > = 9/5 (157)

Step-by-step explanation:

A. -40>= 5/9F - 32

-40+32>= 5/9F

9/5(-8) >= F

B. 125 <= 5/9F - 32

125+32 <= 5/9F

9/5(157) <= F

9/5 (-8) >= F >= 9/5 (157)

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3 years ago

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Lenny asked 125 randomly chosen seventh grade students at his school to name their favorite beverage there are 1500seventh grade

Stells [14]

Complete Question:

Lenny asked 125 randomly chosen seventh grade students at his school to name their favorite beverage there are 1500 seventh grade students in the school predict the number of seventh grade students in his schoolwhose favorite food is pizza. 58 of the 125 students likes pizza.

Answer:

n = 696

Step-by-step explanation:

Sample size = 125

number of students out of the 125 that like Pizza = 58

Probability that a student will like pizza, P = 58/125

P = 0.464

Since there are 1500 seventh grade students in the school, based on the probability that a student likes pizza = 0.464, number of seventh grade students in the school that like pizza will be:

n = 100 * P

n = 1500 * 0.464

n = 696

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4 years ago

C + d - ___ = c i dont really get this

madam [21]

Answer:

c + d - d = c

Step-by-step explanation:

c = c

d - d = 0

c + 0 = c

c = c

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3 years ago

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