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2 years ago

Given (x – 7)2 = 36, select the values of x.

Mathematics

1 answer:

sdas [7]2 years ago

4 0

1 and 13. I think you meant to make 2 as an exponent, otherwise it would not be any of the following if it isn’t.

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In a class with 30 students, there are 18 women and 12 men. What is the ratio of men to women in the class?

Nonamiya [84]

Answer:

2:3

Step-by-step explanation:

A total of 30 students with 12 girls so its 12/30 & its the balance of 18 boys or 18/30

12:18 ÷ by 2 on both sides is.6:9 & 2:3, Answer is Ratio of 2:3.

4 0

3 years ago

A scientist was in a submarine below sea level, studying ocean life. Over the next ten minutes, she went up 22.1 feet. How many

GaryK [48]

A scientist is actually stronger then u but okay

4 0

3 years ago

Read 2 more answers

Use the Pythagorean theorem to obtain the function D(x) for the length of the diagonal of a double square of width x.

Yuri [45]

Answer:

$D(x)= x\sqrt{2}$

Step-by-step explanation:

Given

$Side = x$

Required

Represent the diagonal as a function

Using Pythagoras theorem, the diagonal is:

$D^2= Side^2 + Side^2$

Substitute x for Side

$D^2= x^2 + x^2$

$D^2= 2x^2$

Take the square root of both sides

$D= \sqrt{2x^2$

Split

$D= \sqrt{2} * \sqrt{x^2$

$D= \sqrt{2} * x$

$D= x\sqrt{2}$

Express as a function.

$D(x)= x\sqrt{2}$

4 0

3 years ago

The equation V(t) = 12,000(0.75)^t represents the value of a motorcycle

user100 [1]

Answer:

(2) The motorcycle cost $12,000 when purchased.

Step-by-step explanation:

In the standard exponential equation, y = ab^x, a is the original value.

Since the equation is V(t) = 12,000(0.75)^t, a is 12,000.

This means that the original value was 12,000.

So, the motorcycle cost $12,000 when it was first purchased.

The correct answer is (2) The motorcycle cost $12,000 when purchased.

7 0

3 years ago

An arc subtends a central angle measuring 2pi/3

RoseWind [281]

Answer:

1/3

Step-by-step explanation:

We know that angle subtended by whole circumference is $2\pi$ .

If r is the radius then Length of whole circumference is $2\pi r$

$2\pi$ radian has $2\pi r$ length

dividing both side by $2\pi$ we have

$2\pi /2\pi = 2\pi r/2\pi \ circumference$

1 radian has r length

1 radian = r length equation a

=> since we have to find value of circumference for $2\pi /3$ we

multiply both side of equation a with $2\pi /3$ .

$2\pi /3 \radian = r* 2\pi /3 \circumference$

therefore, length of required arc is $2\pi r/3$

________________________________________________

we have to find how much is this as fraction of total circumference of circle

fraction of circumference = value of arc length / total length of circumference

fraction of circumference = $=>(2\pi r/3) / 2\pi r\\=> 1/3$

Thus, the given arc is 1/3 of circumference of circle.

8 0

3 years ago