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3 years ago

Simplity to create an equivalent expression 2 ( - 14+ r ) -(-3 - 5)

Mathematics

1 answer:

vovikov84 [41]3 years ago

8 0

Answer:

2r+25

Step-by-step explanation

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Over the weekend Ella ran three times as many miles as Vera. Together they ran 24 miles. How many miles did Vera run?

Virty [35]

Answer:

$6\ miles$

Step-by-step explanation:

Let

x------> number of miles Vera ran

y-----> number of miles Ella ran

we know that

$x+y=24$ -----> equation A

$y=3x$ -----> equation B

substitute equation B in equation A and solve for x

$x+(3x)=24$

$4x=24$

$x=6\ miles$

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4 years ago

.485 or .5 which is greater and why

Llana [10]

Answer:

.5 because .485 goes all the way to thousanths and the number 4 is in the tenths and its lower so the five is in the tenths and higher than 4. So that would lead you to .5 being greater.

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3 years ago

Mitch and Renae are sharing a large sub sandwich. Mitch ate 1/4 of the sandwich, and Renae ate 2/4 of the sandwich. How much of

Lesechka [4]

They are 3/4 of the sandwich.

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2 years ago

Read 2 more answers

A farmer has two pieces of land in a parallelogram shape on the same base. He grows vegetables and flowers in two triangular pie

Hitman42 [59]

Step-by-step explanation:

In trapezoid ABCF, AB || CF.

Therefore, parallelograms ABEF & ABCD have same height and lie on the same base AB.

$\therefore Ar(\parallel^{gm} ABEF) = Ar(\parallel^{gm}ABCD)\\... (1)\\\\ \because\: Ar(\parallel^{gm} ABEF) \\=Ar(\triangle AFD) + Ar(\square \: ABED)....(2) \\\\\&\: Ar(\parallel^{gm}ABCD)\\= Ar(\triangle BCE) +Ar(\square ABED)....(3)$

From equations (1), (2) & (3), we find:

$Ar(\triangle AFD) + Ar(\square \: ABED) \\ = Ar(\triangle BCE) +Ar(\square ABED) \\ \\ \purple {\boxed {\therefore Ar(\triangle AFD) = Ar(\triangle BCE)}} \\$

Thus, the two triangular pieces of land are equal in area.

Hence proved.

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3 years ago

What’s a constant Proportionality

irina1246 [14]

In mathematics, two variables areproportional if there is always aconstant ratio between them. Theconstant is called the coefficient ofproportionality or proportionality constant. ... x and y are directlyproportional if the ratio yx is constant.

In other words, the constant of proportionality is also the slope, **m**, rate of change, etc.

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3 years ago