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3 years ago

Three students have started a fence-painting business. Working together,

Mathematics

1 answer:

NARA [144]3 years ago

8 0

Answer:

4 1/2 hours

Step-by-step explanation:

Pragnesh = 30 minutes

Qazi = 1 1/2 hours

Ronghui = 2 1/2 hours

add them and that gets you 4 1/2 hours. You can also check this yourself by putting this in the number problem. :)

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On anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. if her rear wheel turns 875 times per

quester [9]

Let the number of times she turns the pedal in one mile be x.

Given that her rear miles turns 875 times in one mile and the ratio of pedal turns to rear wheel turns is 4 to 7, then

$\frac{4}{7} = \frac{x}{875} \\ \\ \Rightarrow 7x=4(875)=3,500 \\ \\ \Rightarrow x= \frac{3,500}{7} =\bold{500}$

Therefore, she turns the pedal 500 times in one mile.

8 0

3 years ago

Read 2 more answers

Complete the table!!!!

Nookie1986 [14]

1:30
hope it helps
............................

5 0

4 years ago

An isosceles triangle has base angles 41 degrees each and a base of 15 inches. How high is the altitude? Round your answer to tw

-BARSIC- [3]

Answer:

6.52 inches

Explanation:

explanation is in the image above 1,2

HOPE THIS HELPS PLEASE MARK ME BRAINIEST

7 0

3 years ago

Help me with this please anyone x

Murrr4er [49]

$\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x
\\
&& y={{k }}x
\end{array}\\\\
-------------------------------\\\\$

$\bf \textit{we know that }\qquad 
\begin{cases}
y=42\\
x=6
\end{cases}\implies 42=k6\implies \cfrac{42}{6}=k
\\\\\\
7=k\impliedby \textit{constant of variation}
\\\\\\
thus\qquad \qquad y=7x
\\\\\\
\textit{what is "y" when x=5?}\qquad y=7(5)\impliedby \textit{solve for "y"}
\\\\\\
\textit{what is "x" when y=28?}\qquad 28=7x\impliedby \textit{solve for "x"}$

6 0

4 years ago

Please help me find the perimeter and area of each polygon. Will mark brainlyist plus 30 points! It’s due in an hour

iVinArrow [24]

Answer:

Step-by-step explanation:

for the triangle:

1.9x8/2= 7.6mi (this is area)

perimeter=17mi

for the trapezoid:

area= 18.36+13.6=31.96yd

perimeter=24.1yd

4 0

3 years ago