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aliya0001 [1]
2 years ago
8

3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21

Mathematics
1 answer:
USPshnik [31]2 years ago
6 0

Answer:

-21

Step-by-step explanation:

3x7=21 and a negative x a positive is always negative

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Which of the following choices is the simple formula for the nth term of the following arithmetic sequence?
VladimirAG [237]
First, we start off with the nth term formula for an arithmetic sequence, which is 
a_{n} =a_{1}+(n-1)d

plug in the sequence numbers where they belong

a_{n}=5+(n-1)*(-4)

a_{n}=5+(-4n+4)
a_{n}=5-4n+4
a_{n}=-4n+9

And this is the final answer
-4n+9
4 0
3 years ago
What's the cube root of 2744000
Paraphin [41]
The cube root of 2744000 is 140
4 0
3 years ago
Jon borrows $4.50 from his friends to pay for his snacks, and $13.65 from his sister to go to the movies. How much money does he
yarga [219]

Answer: $18.15

Step-by-step explanation:

$ 4.50 + $13.65 = total amount due

4 0
3 years ago
Determine the equation of the circle with radius 99 and center (-1,-8)(−1,−8).
kumpel [21]
<h2>Equations of Circles</h2>

Generally, you'd see the equation of a circle organized in the following format:

(x-h)^2+(y-k)^2=r^2

  • (h,k) is the center
  • r is the radius

To determine the equation given the center and the radius:

  1. Plug both pieces of information into the general equation
  2. Simplify

<h2>Solving the Question</h2>

We're given:

  • Radius: 99
  • Center: (-1,-8)

Plug the radius and center into the equation as r and (h,k):

(x-(-1))^2+(y-(-8))^2=99^2\\(x+1)^2+(y+8)^2=9801

<h2>Answer</h2>

(x+1)^2+(y+8)^2=9801

7 0
2 years ago
Which is not a common factor of 15, 45,and 90
Naddika [18.5K]

Answer:

6/90/45/30/18/9/2

Step-by-step explanation:

15: 3/5/15/1

45: 45/1/9/5/15/3/

90: 90/1/9/10/45/2/15/6/3/30/5/18

7 0
3 years ago
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