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HACTEHA [7]
2 years ago
10

Draw two triangles has length 6 and width 9.The second has length 3x and width 9.Write at least three different expressions for

the sum of the areas of the rectangles.

Mathematics
1 answer:
IRINA_888 [86]2 years ago
5 0

Step-by-step explanation:

Three different expressions for the sum of the areas of the rectangles.

-The first is:

AREA = BASE X HEIGHT

2.A second way is:

AREA= Constant x (Variable + Constant)

<em><u>ADDITIONAL INFORMATION: </u></em>

A file with the drawing of the two triangles with their lengths and widths is attached.

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Keith_Richards [23]
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7 0
3 years ago
Help?
MAXImum [283]

Answer:

$32.39

Step-by-step explanation:

She has a 15-gallon tank and it has 1/5 a tank of gas left (so about 3/15)

Because she needs to refill it and already has 1/5, she'll only need to pay for 4/5 a tank of gas (12/15).

So the equation should be 12 times $2.699.

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Then, round to the nearest cent.

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Hope this helped !

5 0
2 years ago
Prove that the triangle EDF is isosceles. Give reasons for your answer.
Gekata [30.6K]

Answer:

\triangle EDF is isosceles.

Step-by-step explanation:

Please have a look at the attached figure.

We are <u>given</u> the following things:

\angle EDF = y

\text{External }\angle DFG = 90 +\dfrac{y}{2}

Let us try to find out \angle E and \angle DFE. After that we will compare them.

<u>Finding </u>\angle DFE<u>:</u>

Side EG is a straight line so \angle GFE = 180

\angle GFE is sum of internal \angle DFE and external \angle DFG

\angle GFE = 180 = \angle DFE  + \angle DFG\\\Rightarrow 180 = \angle DFE + (90+\dfrac{y}{2})\\\Rightarrow \angle DFE = 180 - 90 - \dfrac{y}{2}\\\Rightarrow \angle DFE = 90 - \dfrac{y}{2} ....... (1)

<u>Finding </u>\angle E<u>:</u>

<u>Property of external angle:</u> External angle in a triangle is equal to the sum of two opposite internal angles of a triangle.

i.e. external \angle DFG = \angle E + \angle EDF

\Rightarrow 90+\dfrac{y}{2} = \angle E + y\\\Rightarrow \angle E = 90+\dfrac{y}{2}  -y\\\Rightarrow \angle E = 90-\dfrac{y}{2} ....... (2)

Comparing equations (1) and (2):

It can be clearly seen that:

\angle DFE = \angle E =90-\dfrac{y}{2}

The two angles of \triangle EDF are equal hence \triangle EDF is isosceles.

8 0
3 years ago
Is 10 gallons greater or 1280 fluid ouncez
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There are 128 fluid oz in 1 gallon
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so they are both the same
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6 0
3 years ago
Read 2 more answers
Which of these expressionis is <br> equivalent to x^4-5x+3/x^2+7
bonufazy [111]

Next time, please list the possible answer choices.  Without them, all I can do is to attempt this problem without having those choices as guidelines.


I must assume that your expression x^4-5x+3/x^2+7 actually meant:

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x^4  -  ---------------

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and I assume that this result was one of the several possible answer choices.

6 0
3 years ago
Read 2 more answers
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