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Dmitriy789 [7]
3 years ago
12

Find y for -4 + 3y = 8 please help asap

Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
8 0

Answer:

y = 4

Step-by-step explanation:

First isolate y

-4 + 3y = 8

3y = 8 + 4

3y = 12

y = 4

charle [14.2K]3 years ago
6 0

Answer:

Y=4

Step-by-step explanation:

3y=12

y=4

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12 is 30% of ____ <br> (Please explain)
natka813 [3]

Answer:

40

Step-by-step explanation:

In word problems, the word "of" usually means multiply.  Thus, for example, 10% of $50 is $5.  This is because we can write 10% as 0.10 or as 10/100 (which is 1/10) and then multiply:    (1/10)(50) = 5

So, we often see equations like:

    R = (1/2)D        meaning R is 50% of D, or R is half of D

Let x = the number we want to find

This problem says:

 "12 is 30%       of    what number?"

  12 = (30/100) *        x

12 = (3/10)x

(10/3)12 = x             [multiply both sides by (10/3)]

    40 = x        

Checking (very important):      

 Is   12 = (3/10)(40)    ?

       12 = (3)(4)    ?

       12 = 12     ? yes

7 0
2 years ago
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A bag contains a total of 25 marbles. The bag contains white, yellow, and
Likurg_2 [28]

16% * 25 = 4

There are 4 red marbles.

8 0
3 years ago
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Mr. Ellis deposited $3,700 into a savings account for which interest is compounded quarterly at a rate of 1.84% how much interes
Bad White [126]
A=p (1+I/k^kn

A future value ?
P principle 3700
i interest rate 0.0184
K compounded quarterly 4
N time 6 years

A=3,700×(1+0.0184÷4)^(4×6)
A=4,130.84

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Hope it helps:-)

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3 years ago
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Troyanec [42]

Answer:

You have not mentioned the joining points so I have joined the points WZ and XY and plotted in the graph. It seems that the lines WZ and XY are perpendicular.

3 0
4 years ago
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Solid A is similar to Solid B. If the volume of Solid A is 3,240 meters cubed
irina [24]

Option B: 36 : 1 is the ratio of the surface area of Solid A to Solid B

Explanation:

Given that the Solid A is similar to Solid B.

The volume of Solid A is 3240 m³

The volume of Solid B is 15 m³

We need to find the ratio of the surface area of Solid A to Solid B.

Thus, we have,

\frac{SA \ of \ Solid A}{SA \ of \ Solid B}=\sqrt[3]{\frac{3240}{15}}

Dividing the terms, we get,

\frac{SA \ of \ Solid A}{SA \ of \ Solid B}=\sqrt[3]{\frac{216}{1}}

Taking cube root, we get,

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Squaring the ratios, we get,

\frac{SA \ of \ Solid A}{SA \ of \ Solid B}=(\frac{6}{1})^2

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Thus, the ratio of the surface area of Solid A to Solid B is 36 : 1

Hence, Option B is the correct answer.

8 0
3 years ago
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