3 years ago

5+2x = -27/8How explain

Mathematics

2 answers:

kari74 [83]3 years ago

8 0

Here is the answer!!!!!!!

kolbaska11 [484]3 years ago

3 0

Answer:

x = -4 3/16.

Step-by-step explanation:

First, convert -27/8 to a mixed number. -3 3/8.

So we can take 5 + 2x = -3 3/8 and subtract 5 from both sides (to get rid of the 5 on the left)

The equation turns into this: 2x = -8 3/8.

Now we can divide by 2 on both sides.

The equation becomes x = -4 3/16.

Hope this helps!

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If y is directly proportional with x and y = 36 when x = 30, what is the value of y when x = 40?

vivado [14]

Answer:

y = 48

Step-by-step explanation:

given y is directly proportional to x then the equation connecting them is

y = kx ← k is the constant of proportionality

To find k use the condition y = 36 when x = 30

k = $\frac{y}{x}$ = $\frac{36}{30}$ = $\frac{6}{5}$

y = $\frac{6}{5}$ x ← equation of proportionality

When x = 40 then

y = $\frac{6}{5}$ × 40 = 48

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3 years ago

What is the greatest integer value of x for which 5-4x>17?

Sveta_85 [38]

Hi there! The answer is -4

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Subtract 5 from both sides.

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Divide by 4

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Therefore, the largest integer value of x which makes the inequality true is -4. Not -3, because when filling in -3, the value isn't smaller than -3 anymore.
(Filling in x = -3 gives 17 > 17, which is incorrect).

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