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3 years ago

Which two expressions are equivalent? *

Mathematics

2 answers:

frozen [14]3 years ago

7 0

Answer:

I believe that the answer is 21x+14 and 7(3x+2).

Step-by-step explanation:

I hope this helps, have a blessed day.

inessss [21]3 years ago

7 0

Answer:

A. 21x + 14 and 7(3x + 2).

Step-by-step explanation:

23x - 14 + 2x = 21x + 14

25x - 14 ≠ 21x + 14

x + x + 5 = x² + 5

2x + 5 ≠ x² + 5

9x² + 9x + 5 ≠ 18x² + 5

21x + 14 = 7(3x + 2)

21x + 14 = 21x + 14.

Your answer is A, 21x + 14 and 7(3x + 2).

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A container is being filled with water at a steady rate. The graph shows how the volume of water in the container varies with th

Mkey [24]

Answer: a. $v=\dfrac{2}{3}t$ and b. $t=\dfrac{3}{2}v$ .

Step-by-step explanation:

Let as consider,

Volume (in gallons) of water in the container = v

The number of minutes = t

(a)

From the given graph it is clear that the line passing through the points (0,0) and (3,2). So, the equation of line is

$v-v_1=\dfrac{v_2-v_1}{t_2-t_1}(t-t_1)$

$v-0=\dfrac{2-0}{3-0}(t-0)$

$v=\dfrac{2}{3}t$

Therefore, the required formula is $v=\dfrac{2}{3}t$ .

(b)

We have,

$v=\dfrac{2}{3}t$

Multiply both sides by 3/2.

$v\times \dfrac{3}{2}=\dfrac{2}{3}t\times \dfrac{3}{2}$

$\dfrac{3}{2}v=t$

$t=\dfrac{3}{2}v$

Therefore, the required formula is $t=\dfrac{3}{2}v$ .

6 0

4 years ago

Four more than twice a number a.2x+4 b.4x+2 c.6x d.2x > 4

makkiz [27]

Answer:

a. 2x + 4

Step-by-step explanation:

Four more than twice a number

Let x = unknown number

Four more than twice of x

Twice of x can be written as 2x

Four more than 2x

Four more can be written as + 4

We get 2x + 4

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3 years ago

18. Which of the following triangles is similar to APQR?

Naya [18.7K]

Answer: D

Step-by-step explanation:

21/17.5 = 18/15

So the triangles are similar by SAS.

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2 years ago

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qwelly [4]

Answer:

Step-by-step explanation:

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3 years ago

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lorasvet [3.4K]

Answer:

h(x) = -x+3

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h = -4

6 0

3 years ago

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