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ankoles [38]
3 years ago
7

Please help Find the area of the rectangle by multiplying its length and width.

Mathematics
2 answers:
Julli [10]3 years ago
7 0

the answer is D. man

bogdanovich [222]3 years ago
5 0

Answer:

D.  (21x2 - 17x + 2)\text{ square units }

Step-by-step explanation:

Given,

The length of the rectangle = (7x-1) unit,

Its width = (3x-2) unit,

We know that,

The area of a rectangle = Length × Width

So, the area of the rectangle,

A=(7x-1)(3x-2)

=(7x-1)(3x)-(7x-1)(2)  ( Distributive property )

=21x^2-3x-14x+2     ( Again by distributive property )

=21x^2-17x+2

Hence, Option D is correct.

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<img src="https://tex.z-dn.net/?f=x%20%2B%20y%20%20%3D%2014%5C%5C%202x%20%2B%204y%20%3D%2018" id="TexFormula1" title="x + y = 1
alexgriva [62]

Answer:

x = 19, y = -5

Step-by-step explanation:

x + y = 14  => x= 14-y

2x + 4y = 18  => 2(x+2y)=18  => x+2y=9

x+2y=9 => (14 - y) + 2y = 9

14 + y = 9  => y = -5

x + (-5) = 14  => x=19

5 0
3 years ago
Roberto wants to make $2.00 using dollars, half-dollars and quarters. How many different ways can he make $2.00?
pochemuha
He can use 4 half dollars, since 2 half dollars make a whole dollar.
He can use 2 regular dollars, since each 1 dollar bill plus another is 2.
He can also use 8 quarters because 4 Quarters makes a whole dollar.
6 0
4 years ago
Read 2 more answers
What is bigger 4/5 or 8/10
statuscvo [17]
They are equal because if you make 4/5 into a denominator of 10 it is 8/10
6 0
4 years ago
Read 2 more answers
Expand.<br>a)3(x - 2)<br>b)2(y + 4)<br>c)8(3 + x)<br><br>​
coldgirl [10]

Answer:

a \: 3x - 6 \\ b \: 2y + 8 \\ c \: 8x + 24

Step-by-step explanation:

All we have to do is multiply accordingly. I'll use a for an example.

So for the value before the perentheses we multiply that by all of the values in the perentheses.

3x \:  and \: - 6

So the correct answer would be

3x - 6

You can use the same strategy for all the questions, but I'll just answer those straight away.

Also you may notice I put the variable before the constant in question c because the variable should always go before the constant in expressions and equations.

8 0
3 years ago
Read 2 more answers
4. Solve for x, and round your answer to the nearest tenth. *<br> х<br> 11<br> 31°
jeka94

Answer:

18.3 16.5 7.3 12.5

Step-by-step explanation:

Solve 2/3=11/x . Round to the nearest tenth. 18.3 16.5 7.3 12.5 hoped it worked

8 0
3 years ago
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