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3 years ago

A window washer cleaned 28 window in 4 hours. At the rate, how many windows did he clean in 9 hours?

Mathematics

2 answers:

KonstantinChe [14]3 years ago

6 0

Divide 28 by 4 which is 7 and then times that number by 9 so 63 windows im pretty sure

MaRussiya [10]3 years ago

4 0

Divide 28 by 4 which is seven so times that by nine which is 63

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gtnhenbr [62]

Shape of it's bases.

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4 years ago

Mr. Geyer dog weighs 32.01 pounds if he goes on a die and loses 5.89 pounds how much will he weigh

Soloha48 [4]

Answer: 27.12

Step-by-step explanation:

32.01

-5.89

27.12

6 0

3 years ago

A skate board ramp is built on an incline so that it rests on a porch that is 1.3m high. The bottom of the ramp is placed 2.5m f

mr_godi [17]

Answer:

θ = 27.47°

Step-by-step explanation:

This problem can be represented as a right-angled triangle, as shown in the diagram below.

To find θ, we apply the tangent part of the trigonometric ratios SOHCAHTOA:

tanθ = $\frac{opposite}{adjacent}$

In the diagram, opposite = 1.3 m and adjacent = 2.5 m

Hence:

tanθ = $\frac{1.3}{2.5}$

tanθ = 0.52

θ = $tan^{-1} 0.52$

θ = 27.47°

The ramp forms 27.47° with the ground.

8 0

4 years ago

Factorise 45p² -125q²

SashulF [63]

Answer:

5(3p + 5q)(3p - 5q)

Step-by-step explanation:

$45 {p}^{2} - 125 {q}^{2} \\ \\ = 5(9 {p}^{2} - 25 {q}^{2} ) \\ \\ = 5 \{ {(3p)}^{2} - {(5q)}^{2} \} \\ \\ = 5(3p + 5q)(3p - 5q)$

8 0

3 years ago

Read 2 more answers

Find the equation, f(x) = a(x-h)2 + k, for a parabola that passes through the point (0, 0) and has (-3, -6) as its vertex. What

Arisa [49]

F(x) = a(x-h)² + k

Given that the vertex is (-3 -6):

f(x) = a(x + 3)² -6

Given that it passes through (0.0), find a:

a(0 + 3)² - 6 = 0

9a - 6 = 0

9a = 6

a = 6/9 =2/3

So the equation is :

f(x) = 2/3(x + 3)² -6

Write the equation in standard form:

f(x) = 2/3(x² + 6x + 9) - 6

f(x) = 2/3x² + 4x + 6 - 6

f(x) = 2/3x² + 4x

Answer: f(x) = 2/3x² + 4x

6 0

4 years ago