Ask question

Ask question

All categories

3 years ago

5

Keeping the properties of exponents in mind to what power must your raise the expression 7 1/2 to get 7 as a result

1 answer:

exis [7]3 years ago

3 0

Answer:

x=2

Step-by-step explanation:

(7^ (1/2))ˣ = 7¹

1/2 *x =1

x =2

You might be interested in

The sum of the measures of angle Y and angle Z is 180 degrees. Angle Y measures (3x + 20) degrees and Angle Z measures x degrees

Minchanka [31]

A)
The question tells us that
y + z = 180
And
y=3x+20
z=x

So we put them in the first formula:

y + z = 180
(3x + 20) + x = 180

Add and get x to one side:
4x + 20 = 180
4x + 20 - 20 = 180-20
4x = 160
Divide both sides by 4
x = 40

B)
Put x back in to equation to get size of each angle:

Y =3x +20
Y=3(40)+20
Y=120+20
Y=140

Z=x
Z=40

Verify: y+z=180
140+40=180
180=180

8 0

2 years ago

Screenshot down below math question

Volgvan

I believe the answer is 1.35 x10^14

8 0

3 years ago

There are 60 boys in the third year, 24 of whom study chemistry. What percentage of third year boys study chemistry.

quester [9]

Answer:

40%

Step-by-step explanation:

24/60 = .4

8 0

3 years ago

Read 2 more answers

there are 148 juniors and 272 seniors attending prom this year. if there must be three chaperones per 60 students, how many chap

valkas [14]

21 chaperones are needed for 420 students.

Step-by-step explanation:

No. of juniors = 148

No. of seniors = 272

Total = 148+272 = 420 students

3 chaperones = 60 students

1 chaperone = $\frac{60}{3}=20\ students$

Ratio of chaperon to students = 1:20

Let,

x be the number of chaperons for 420 students.

Ration of chaperones to students = x:420

Using proportion

Ratio of chaperones to students :: Ratio of chaperons to students

$1:20::x:420$

Product of mean = Product of extreme

$20*x=420*1\\20x=420\\$

Dividing both sides by 20

$\frac{20x}{20}=\frac{420}{20}\\x=21$

21 chaperones are needed for 420 students.

Keywords: ratio, proportion

Learn more about ratios at:

#LearnwithBrainly

3 0

3 years ago

C and d are complementary. The measure of c is 4x and the measure of d is 26. What is the value of x

const2013 [10]

Answer:

The value of x is 16.

Step-by-step explanation:

We are given the following in the question:

c and d are complementary angles.

Measure of c = $4x$

Measure of d = 26

Since c and d are complementary, we can write from property of complementary:

$c + d = 90$

Putting values, we get,

$4x + 26 =90\\4x = 90-26 = 64\\\\\Rightarrow x = \dfrac{64}{4} = 16$

Thus, value of x is 16.

6 0

3 years ago