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mezya [45]
3 years ago
9

A number multiplied by 7 is less than 21. Which of the following expressions

Mathematics
1 answer:
Valentin [98]3 years ago
5 0

(N instead of X for variable)

N x 7 < 21

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svetlana [45]
The first one is the answer
7 0
3 years ago
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Can some one help me ??? Anyone ?
Leya [2.2K]
((-2)^2-4)^3+4\cdot(-5)=\\&#10;(4-4)^3+(-20)=\\&#10;0^3-20=\\&#10;0-20=\\-20
6 0
3 years ago
Which equation can be used to find the solution of (1/3)^d−5=81 ?
horsena [70]

Let's solve your equation step-by-step.

Step 1: Add 5 to both sides.

\frac{1}{3}^{2} -5+5=81+5

\frac{1}{3}^d =86

Step 2: Solve Exponent to get.

d = −4.054522   or -4.05  hope this helps


4 0
3 years ago
HELPPP DUE IN A COUPLE MIN MARKING BRAINLIEST ANSWER ASAP
ankoles [38]

Answer: See explanation

Step-by-step explanation:

15.) -7x + 6 (x - 8/2) - 2(x + 3) + 10

-7x + 6 (x - 4) - 2(x + 3) + 10

-7x + 6x - 24 - 2x - 6 + 10

Bring like terms together

-7x + 6x - 2x - 24 - 6 + 10

-3x - 20

16.) B, C, D

B. 3 (x + 2) + 4x

3x + 6 + 4x = 7x + 6

C. -2 + 4(x + 3)

-2 + 4x + 12 = 4x + 10

D. 3x + 5(x - 1)

3x + 5x - 5

8x - 5

17.) A, B, D

A. 1/5(x - 50)

1/5x - 10

B. 1/6(-x + 12)

-1/6x + 2

D. 1/2(x + 16)

1/2x + 8

4 0
2 years ago
Examine the system of equations.
SashulF [63]

Answer:

y=11

Step-by-step explanation:

Solve the system by substitution by setting the equations equal to each other.

y = 5x+6

y = x+10

It becomes 5x+6 = x+10. Solve for x using inverse operations.

5x+6 = x+10

4x+6 = 10

4x = 4

x=1

Substitute x=1 into one equation to find y.

y = x+10

y = 1 +10

y=11

6 0
3 years ago
Read 2 more answers
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