All categories

3 years ago

.

Mathematics

2 answers:

lana [24]3 years ago

5 0

The answer would be 151 books

Elis [28]3 years ago

4 0

Answer: 151 books

Step-by-step explanation: 243-65-59+32=151

You might be interested in

Which function below is the inverse of f(x) = x2 − 25?

FrozenT [24]

(x-5)(x+5) is the answer

8 0

4 years ago

Read 2 more answers

A 10-foot ladder is to be placed Against the side of the building. The base of the latter must be placed in an angle of 72° With

12345 [234]

Answer:

Distance of foot of ladder from building: 37.2 inches

Distance of top of ladder from building's base: 114 inches

Step-by-step explanation:

Please refer to the figure attached in the answer area.

A right angled triangle $\triangle ABC$ is formed by the ladder with the building where hypotenuse is the length of ladder.

Hypotenuse, AC = 10 foot

Also, we are given that angle made by the base of ladder with the ground is $72^\circ$ .

We have to find AB and BC.

$\angle BAC = 72^\circ$

Using trigonometric functions:

$cos \theta= \dfrac{Base}{Hypotenuse}\\cos 72^\circ= \dfrac{AB}{AC}\\\Rightarrow 0.309 = \dfrac{AB}{AC}\\\Rightarrow AB = 10 \times 0.309\\$\approx$ 3.1 foot\\$\approx$ 37.2 inches$

$sin \theta = \dfrac{Perpendicular}{Hypotenuse}\\\Rightarrow sin72^\circ = \dfrac{BC}{AC}\\\Rightarrow 0.95 = \dfrac{BC}{AC}\\\Rightarrow AB = 10 \times 0.95\\$\approx$ 9.5 foot\\$\approx$ 114 inches$

Distance of foot of ladder from building: 37.2 inches

Distance of top of ladder from building's base: 114 inches

8 0

3 years ago

Find the value of the expression below when x =3/4 4x² + 8x - 5

kap26 [50]

Answer:

4x² + 8x - 5

= 4(3/4)² + 8(3/4) - 5

= 4 × 9/16 + 24/4 - 5

= 36/16 + 24/4 - 5

= 9/4 + 6 - 5

= 9/4 +1

= 3.25

Step-by-step explanation:

Hope it helps!!

4 0

3 years ago

Question

igor_vitrenko [27]

Answer: 7920

Step-by-step explanation:

Convert 600mph to feet per hour.

600 x 5280 = 3168000 feet per hour

Convert feet per hour into seconds by dividing by 60 to get minutes and 60 again to get seconds.

3168000 / 60 / 60 = 880 Feet per second

Multiply by 9

880 x 9 = 7920 feet in 9 seconds

3 0

3 years ago

Write 0.125 as a simplest fraction and percent.

DiKsa [7]

Answer:

12½% 0.125 1/8

Step-by-step explanation:

5 0

3 years ago