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2 years ago

1/4x +7=10 What is X?

Mathematics

2 answers:

antiseptic1488 [7]2 years ago

6 0

Answer:

Step-by-step explanation:

first move the 7 to the right of your equation, which then becomes 10-7= 3. then divide 3 by 1/4 and x= 12

plug in 12 back into x to make sure it is correct

Alex17521 [72]2 years ago

4 0

Answer:

x=12

Step-by-step explanation:

Step 1: Subtract 7 from both sides.

Step 2: Multiply both sides by 4.

and you get x=12

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Solve for a. (a+6)2=49

sashaice [31]

Answer:

(a+6)2=49 (use the distributive property and multiply 2 by everything left side

2a +12=49 (subtract 12 from both sides to isolate the a-term)

2a = 37 (divide both sides by 2 to get a alone)

a= 18.5 (this is your answer)

Step-by-step explanation:

I hope this helps :)

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2 years ago

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The polygons are similar. Find the value of x.

dmitriy555 [2]

Answer:

x = 30

Step-by-step explanation:

12 : 20 = 18 : x

⇒ 12/20 = 18/x

⇒ 12x = 18 · 20

⇒ 12x = 360

⇒ x = 360 ÷ 12

⇒ x = 30

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1 year ago

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lesya [120]

Answer: 0.667

Step-by-step explanation:

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2 years ago

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Frank left his house at 7 a.m. and drove to the airport at a speed of 50 mph. Lance left his house at 6 a.m. and drove to the sa

kodGreya [7K]

Answer:

Frank arrived at 10:00

Step-by-step explanation:

First, we need to ask ourselves how many times can 50 go into 150?

It is 3 times.

So then we do 7:00 + 3 hours which gets us to

10:00.

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2 years ago

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Type the correct answer in the box. Use numerals Instead of words. If necessary, use / for the fraction bar.

Zielflug [23.3K]

Using an exponential function, it is found that the value of David's Investment will be at least $415 after a period of 20 years.

<h3>What is an exponential function?</h3>

An increasing exponential function is modeled by:

$A(t) = A(0)(1 + r)^t$

In which:

A(0) is the initial value.

r is the growth rate, as a decimal.

In this problem, the initial value and the growth rate for his investment are given by:

A(0) = 230, r = 0.03.

Hence, the value after t years is given by:

$A(t) = 230(1.03)^t$

Then, the value will be of at least $415 when:

$A(t) \geq 415$

$230(1.03)^t \geq 415$

$(1.03)^t \geq \frac{415}{230}$

$\log{(1.03)^t} \geq \log{\frac{415}{230}}$

$t\log{1.03} \geq \log{\frac{415}{230}}$

$t \geq \frac{\log{\frac{415}{230}}}{\log{1.03}}$

$t \geq 20$

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

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1 year ago