4 years ago

If 12 times a number is 40 more than 2 times the number, what is the number?

Mathematics

1 answer:

lyudmila [28]4 years ago

6 0

Answer:

480

Step-by-step explanation:

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At a local gym, a random sample of 75 members

Juli2301 [7.4K]

Answer:

number of gym members who prefer bicycling : 18/75*350 = 84

number of gym members who prefer exercise classes: 22/75*350 ≈ 103

number of gym members who prefer running on the treadmill: 15/75*350 = 70

number of gym members who prefer weight lifting: 20/75*350 ≈ 93

Step-by-step explanation:

GYM SURVEY RESULTS

Type Number of Members

Bicycling 18

Exercise Classes 22

Running on Treadmill 15

Weight Lifting 20

Total 75

5 0

3 years ago

Mark all of the whole numbers below. 0 -1 5 10

kow [346]

All of them are whole

3 0

3 years ago

Write an expression to represent how to calculate the area of a triangular sail.

shutvik [7]

Answer:

(b × h) ÷ 2

Step-by-step explanation:

4 0

3 years ago

1) complete the special right triangle what is length of BD what is length of BC

Arada [10]

Answer:

$BD = 4$

$BC =4\sqrt 3$

Step-by-step explanation:

Given

The attached triangle

Required

Find BD and BC

Solving BD

Considering angle at D, we have:

$\cos(D) = \frac{Adjacent}{Hypotenuse}$

$\cos(60) = \frac{BD}{8}$

Solve for BD

$BD = 8 * \cos(60)$

$\cos(60) = 0.5$ So:

$BD = 8 * 0.5$

$BD = 4$

To solve for BC, we make use of Pythagoras theorem

$CD^2 = BC^2 + BD^2$

This gives

$8^2 = BC^2 + 4^2$

$64 = BC^2 + 16$

Collect like terms

$BC^2 =64-16$

$BC^2 =48$

Take square roots

$BC =\sqrt{48$

Expand

$BC =\sqrt{16*3$

Split

$BC =\sqrt{16}*\sqrt 3$

$BC =4\sqrt 3$

8 0

3 years ago

Which number is larger? -20 or -15

Ahat [919]

The answer is -15 and -20 is smaller.

4 0

3 years ago

Read 2 more answers