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natulia [17]
3 years ago
9

(n3) (n7) = (n)21 A. True B. False

Mathematics
1 answer:
OLEGan [10]3 years ago
7 0

Answer:

False

Step-by-step explanation:

When multiplying two exponential numbers you add their powers together : (n3)(n7) = n10

so the expression is false

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A rectangular field measures 400m by 900m, what is the perimeter of the field:
Alina [70]

Answer:

a) 1790 b) 1.79

Step-by-step explanation:

a) you just add to get the perimiter 2(900) + 2(400) to get 1790

b) 1000 meters makes a kilometer so we divide by 1000 and get 1.79 for the kilometers

6 0
3 years ago
Read 2 more answers
Explain how your know that 88is a solution to the equation 1/8 R = 11 complete the sentences
Eddi Din [679]

Answer:

In this equation R would equal 88 because it satisfies the equation.

Step-by-step explanation:

You must solve for R by isolating the variable(which is R). To move the 1/8, multiply both sides by 8. You would do this because 8 is the reciprocal of 1/8. With R on it's own, to keep both sides equal multiply 11*8. That equals 88, which satisfies the equation, which is why 88 is the solution.

Hope this helps :)

8 0
3 years ago
What are all the common factors of 36 and 56? A. 1, 2, 4 B. 1, 2 C. 1, 2, 3, 4, 9 D. 1, 2, 4, 8
tamaranim1 [39]
I think the answer is A.1,2,4
8 0
3 years ago
Read 2 more answers
Which expressions are equivalent to 5 x-15? Select three options.
mojhsa [17]

Answer:

b) 5 (x-3)\\c) 4 x + 3 y-15- 3 y + x\\e) -20 - 3 x + 5 + 8 x

Step-by-step explanation:

We are given the following expression in the question:

5x-15

a)

5 (x + 15)\\=5(x) + 5(15)\\=5x + 75

which is not equivalent to the given expression.

b)

5 (x-3)\\=5(x)-3(5)\\=5x-15

which is equivalent to the given expression

c)

4 x + 3 y-15- 3 y + x\\=4x+x+3y-3y-15\\=5x-15\\=5(x-3)

which is equivalent to the given expression.

d)

-7 y-6 x- 8 y + x\\=-7y-8y-6x+x\\=-15y-5x\\=-5(x+3y)

which is not equivalent to the given expression.

e)

-20 - 3 x + 5 + 8 x\\=-3x+8x-20+5\\=5x-15

which is equivalent to the given expression.

7 0
3 years ago
Coterminal angle help
makkiz [27]

Answer:  320

<u>Step-by-step explanation:</u>

Coterminal means it is in the same place on the Unit Circle but with one or more rotations clockwise or counterclockwise.

Note: one rotation is 360°

-760 + 360 = -400

                     -400 + 360 = -40

                                           -40 + 360 = 320  

320 is between 0 and 360 so this is the angle we are looking for!

7 0
3 years ago
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