All categories

3 years ago

What is 70% of blank = 28

2 answers:

5 0

Percent means parts out of 100
70%=70/100=7/10
7/10 of x=28
'of' means multiply
7/10 x=28
multiply both sides by 10/7 to get rid of fraciton
x=40

the number is 40

irakobra [83]3 years ago

3 0

Divide 28 by .7 and you have your answer...40.. simple algebra just get x(blank) by itself

You might be interested in

Please help on all asap, tysm <33

kondor19780726 [428]

Answer:

1. 4.22

2. 19.415

3. nine and thirty- five

4. Three and four hundred twelve

Step-by-step explanation

6 0

3 years ago

Need help ASAP , midterm - 60 points

malfutka [58]

Your answer is going to be 5.2

5 0

3 years ago

What is the exact area and arc length of these sectors? Please helppp

Karolina [17]

Answers with step-by-step explanation:

1. Area of sector 1 = $\frac{90}{360} \times \pi \times 12^2 = 36\pi$

2. Area of sector 2 = $\frac{45}{360} \times \pi \times 19^2 = \frac{2527}{8} \pi$

3. Area of sector 3 = $\frac{270}{360} \times \pi \times 15^2 = \frac{675}{4} \pi$

4. Area of sector 4 = $\frac{270}{360} \times \pi \times 6^2 = 27 \pi$

5. Arc length of sector 1 = $\frac{90}{360} \times 2 \times \pi \times 12 = 6\pi$

6. Arc length of sector 2 = $\frac{315}{360} \times 2 \times \pi \times 19 = \frac{133}{4} \pi$

7. Arc length of sector 3 = $\frac{270}{360} \times 2 \times \pi \times 15 = \frac{45}{2}\pi$

8. Arc length of sector 4 = $\frac{270}{360} \times 2 \times \pi \times 6 = 9\pi$

4 0

3 years ago

Find the area of the figure. Sides meet at right angles. No links please.

ss7ja [257]

Answer:

40 ft²

Step-by-step explanation:

Divide the figure into 2 rectangles and find their areas.

The area of the smaller rectangle

= 3 × 4

= 12 ft²

The area of the larger rectangle

= (8-4) × 7

= 28 ft²

The area of the figure

= 12 + 28

= 40 ft²

4 0

3 years ago

F(x)=3x 3 inverse function

scoundrel [369]

Step-by-step explanation:

if I understand this correctly than you are looking for the inverse function of f(x) = y = 3x³.

the inverse function simply tries to calculate the original x it of the original y.

and then, to make it a formal function, we rename x to y and y to x.

y = 3x³

x³ = y/3

$x = \sqrt[3]{ \frac{y}{3} }$

=> as "regular" function

$y = {f}^{ - 1} (x)= \sqrt[3]{ \frac{x}{3} }$

4 0

3 years ago