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4 years ago

Solve y = x + 4 for x. x = y − 4 x = y + 4 x = −y + 4 x = −y − 4

Mathematics

2 answers:

finlep [7]4 years ago

8 0

Answer:

x=y-4

Step-by-step explanation:

y=x+4

-4

y-4=x

PIT_PIT [208]4 years ago

3 0

Answer:

Option A.

Step-by-step explanation:

y = x + 4

As we know if we perform a similar operation on both the sides of the equation it doesn't affect the parent equation.

So we subtract 4 on both sides of the equation

y - 4 = (x + 4) - 4

x = y - 4

Therefore, option A. will be the answer.

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Solve the equation for x. -4( -X - 5) = 2x + 10

bija089 [108]

Answer:

x equals -5. I suggest using the app Socratic it helps.

8 0

3 years ago

Read 2 more answers

Starting at home, Nadia traveled uphill to the grocery store for 30 minutes at just 4 mph. She then traveled back home along the

seraphim [82]

Answer: $6\ mph$

Step-by-step explanation:

Let d be the distance from Nadia's home to the grocery store.

Given : Nadia traveled uphill to the grocery store for 30 minutes at just 4 mph.

∵ 1 hour = 60 minutes.

Then, $30\text{ minutes}=\dfrac{30}{60}=0.5\text{ hour}$

Since $\text{Distance = Speed * Time}$

Then, $d=4\times0.5=2\text{ miles}$

Also, She then traveled back home along the same path downhill at a speed of 12 mph.

Then, Time taken to travel back home = $\dfrac{\text{Distance}}{\text{Speed}}=\dfrac{2}{12}=\dfrac{1}{6}\text{ hours}$

Average Speed = $\dfrac{\text{Total distance}}{\text{Total time taken}}$

$=\dfrac{2+2}{0.5+\dfrac{1}{6}}\\\\=\dfrac{4}{\dfrac{3+1}{6}}=\dfrac{4\times6}{4}=6\ mph$

Hence, her average speed for the entire trip from home to the grocery store and back = $6\ mph$

8 0

4 years ago

Can anyone help me solve this

Zigmanuir [339]

Answer:

Step-by-step explanation:

THIS IS HOW YOU CAN FIND ANY MISSING ANGLE - ALSO SOLVES FOR X IN THIS QUESTION.

So, a traingle is 180 degrees.

A line is also 180 degrees.

We know that the angles that make up the triangle are 46, 90, and a missing angle

We need to find the missing angle to find x

To find the missing angle, we must subtract the known angles by the 180 degrees of the traingle.

So:

180-90

90-46

So we know the missing angle is 44 degrees.

Let subtract the missing angle(44 degrees) by the 180 degrees of the line:

180-44

136

<u>THIS IS WHAT ANSWERS THE OPTION METHOD THAT GIVES THE ANSWER</u>

So x equals 136. This is the missing angle x.

So, remember, both the line and the traingle are 180 degrees.

They both need to find the missing value, which we know is 44

The rest of both the triangle and line is 136 degrees.

Well, 136 degrees on the triangle is the known 90+46 degrees.

Since this will be the same on the line, we can think of x as:

90+46

This looks like answer 1.

Hope this helps! :)

Read top part so you can understand how to do future problems, and write in comments if you are confused/need more help.

5 0

3 years ago

What’s a constant Proportionality

irina1246 [14]

In mathematics, two variables areproportional if there is always aconstant ratio between them. Theconstant is called the coefficient ofproportionality or proportionality constant. ... x and y are directlyproportional if the ratio yx is constant.

In other words, the constant of proportionality is also the slope, **m**, rate of change, etc.

7 0

3 years ago

X = 1/4 y = 2/3 z = 4 1/5

r-ruslan [8.4K]

The answer is 7/10 (or .7 in decimal form)

8 0

3 years ago