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4 years ago

Devora tested two engines. As each engine's rotation got faster, its temperature increased at a constant rate.

Mathematics

1 answer:

kykrilka [37]4 years ago

5 0

Answer:

The answer to number 1 is B.

The answer to number 2 is B.

Step-by-step explanation:

I did the lesson on khan academy.

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Find the slope from Point A to Point B.

Irina-Kira [14]

The points are A is (1,1) and B (3,3)

With that 2/2

in it simplified form it is = 1

So your slope is 2/2 or 1

Hope this helps

7 0

3 years ago

A blueprint has a scale of 2 inches = 2 feet. What is the scale factor of the blueprint?

VARVARA [1.3K]

1 in = 1 ft

there are 12 inches in a foot...

you could say that 1 inch = 12 inches, or that the scale is 1:12

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3 years ago

The maximum weight that a rectangular beam can support varies jointly as its width and the square of its height and inversely as

NISA [10]

$\bf \qquad \qquad \textit{joint compound proportional variation} \\\\ \begin{array}{llll} \textit{\underline{y} varies directly with \underline{x}}\\ \textit{and inversely with \underline{z}} \end{array}\implies y=\cfrac{kx}{z}\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{W varies jointly as its width, squared heght and inversely with length}}{W=\cfrac{wh^2}{L}}$

$\bf \textit{now we also know that }~~ \begin{cases} w=\frac{1}{4}\\ h=\frac{1}{3}\\ L=12\\ W=30 \end{cases}\implies 30=\cfrac{~~k\frac{1}{4}\left( \frac{1}{3} \right)^2~~}{12} \\\\\\ 360=\cfrac{k}{36}\implies 12960=k~\hfill \boxed{W=\cfrac{12960wh^2}{L}}$

$\bf \textit{when } \begin{cases} w=\frac{1}{4}\\ h=\frac{1}{2}\\ L=12 \end{cases}\textit{ what is \underline{W}?}\qquad W=\cfrac{12960\left( \frac{1}{4} \right)\left(\frac{1}{2} \right)^2}{12} \\\\\\ W=1080\left( \cfrac{1}{4} \right)\left( \cfrac{1}{4} \right)\implies W=1080\cdot \cfrac{1}{16}\implies W=\cfrac{135}{2}\implies W=67\frac{1}{2}$

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4 years ago

oksian1 [2.3K]

Complete Question:

Let x and y be positive integers and x be greater than y.

11x/11y = ?

Answer:

11x/11y = x/y

Step-by-step explanation:

Given

x > y

Required

11x/11y

From the question, we understand that x is greater than y (i.e. x > y)

Also, we'll assume that y ≠ 0, in other not to result in an undefined result.

So,

11x/11y

Divide the numerator and denominator by 11

(11x ÷ 11)/(11y ÷ 11)

The result of the division is:

(x)/(y)

x/y

Hence,

11x/11y = x/y for x > y and y ≠ 0

3 0

3 years ago

It cost a flat free of 3.15 to make an international call plus $0.05 for every minute that you talk. If you were charged $5.10 f

Marrrta [24]

39 minutes. Have a great day!

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3 years ago

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