All categories

3 years ago

In a survey, 10% of the people said they live in a city. If 70 people

Mathematics

1 answer:

ddd [48]3 years ago

8 0

700 people were surveyed.

SOLUTION
70/10%
=700

Or

7 x 10^2
=700

HOPE THIS HELPS!! :))

You might be interested in

[ it's a fraction but i can't write it as such. ]

larisa [96]

Answer:

the value of m will be 20

8 0

4 years ago

Find the shorter base of a trapezoid if the trapezoid's area is 52, its altitude is 8, and its longer basis 10.

DiKsa [7]

Answer:

The shorter base is 3

Step-by-step explanation:

$a = \frac{(b1 + b2)}{2} \times h$

$52 = \frac{(10 + b2)}{2} \times 8$

$b2 = 3$

8 0

3 years ago

It takes leon 13 hours to seal his driveway working by hinself. If michael helps leon, they can seal the driveway in 7 hours. Ho

Monica [59]

Answer:

15.1667 hours (15 hours and 10 minutes)

Step-by-step explanation:

Using the concept of "distance = speed * time", we can formulate equations to solve this problem.

Let's call Leon's speed X, Michael's speed Y and the length of the driveway D.

If leon takes 13 hours alone, we can write the equation:

D = X * 13

If Michael helps Leon, we have this equation:

D = (X+Y) * 7

(The total speed is the sum of their speed, as they are working together)

Making the first equation equate the second, we have:

13*X = 7*X + 7*Y

7*Y = 6*X

X = (7/6)*Y

If we use this value of X in the first equation, we have:

D = 13*X = 13*(7/6)*Y = 15.1667*Y

So we have that Michael would take 15.1667 hours (15 hours and 10 minutes) to seal the driveway alone.

4 0

3 years ago

Somebody help me how do i get my grade up from a 25 in math by tom because grads go in.

34kurt

Answer:you have to ask your teacher for mad extra credit and maybe turn in late assignments and retake quizes

Step-by-step explanation:

7 0

3 years ago

The diagonal of a cube is a segment whose endpoints are vertices that are not on the same face. Find the surface area of a cube

torisob [31]

Answer:

The surface area of the cube is $128\ units^{2}$

Step-by-step explanation:

step 1

Find the length side of the cube

we know that

The diagonal of a cube is equal to

$d=b\sqrt{3}$

where

b is the length side of the cube

In this problem we have

$d=8\ units$

substitute and solve for b

$8=b\sqrt{3}$

$b=\frac{8}{\sqrt{3}}\ units$

step 2

Find the surface area of the cube

The surface area of the cube is equal to

$SA=6b^{2}$

substitute the value of b

$SA=6(\frac{8}{\sqrt{3}})^{2}=128\ units^{2}$

5 0

3 years ago