3 years ago

Which of the following phrases are equations?

Mathematics

1 answer:

Svetradugi [14.3K]3 years ago

6 0

Answer:

(A)

(B)

(D)

Step-by-step explanation:

(A) 60/5 = 4 × 3

(B) 74 = -2t

(D) (r−3) × s=s²

Are equations

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What is the value of the x in this equation. 7x = 14

S_A_V [24]

Answer:

Step-by-step explanation:

7x=14

$\frac{7x}{7} = \frac{14}{7}$

x=2

hope it's helpful ❤❤❤

THANK YOU.

7 0

3 years ago

What is the coefficient of x in 4x/5 a)1/5 b.5 c.4/5 d.4 e.-0.8

almond37 [142]

Answer:

$\frac{4}{5}$

Co efficient means the number or value beside preventing the variable from standing alone

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3 years ago

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From a population of 200,000,000 elements, the standard deviation is known to be 14. A sample of 49 elements is selected. It is

Talja [164]

Answer:

The standard error of the mean = 2

Step-by-step explanation:

Given that:

The standard deviation σ = 14

The sample size n = 49

The sample mean $\overline x$ = 56

The formula for calculating the standard error can be expressed as:

$S.E = \dfrac{\sigma}{\sqrt{n}}$

$S.E = \dfrac{14}{\sqrt{49}}$

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3 years ago

(-y+5•3)+7.2y-9)=6.2y+n

kramer

(-y+5x3)+(7.2y-9)=6.2y+n
(-y+15)+(7.2y-9)=6.2y+n
since you're adding the two parentheses, you don't need to have them there
-y+15+7.2y-9=6.2y+n
7.2y-y +15-9 =6.2y+n
6.2y + 6 =6.2y+n
6.2y - 6.2y -n = -6
-n=-6
n=6

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3 years ago

Just number 9 not the other one please help

Paladinen [302]

Answer:

I do believe the answer is C

Step-by-step explanation:

.004 / .0004 =

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