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2 years ago

7x-2y-1= The x=3 The y is= 4

Mathematics

1 answer:

Damm [24]2 years ago

7 0

Answer:

=12

Step-by-step explanation:

You just plug in the variables

7x-2y-1

7(3)-2(4)-1

simplify the expression

solve

which will give you 12

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What is an equation of the line that passes through the points (-4,-2) and (8, 1)?

stiv31 [10]

Answer:

y=1/4x-1

Step-by-step explanation:

7 0

2 years ago

Please help 7th grade math question? URGENT! awarding brainliest!

Ivenika [448]

correct Option is B i.e, $72x^2+288x^2-216x$ whose simplified form is: $360x^2-216x$

Step-by-step explanation:

We need to solve the expression:

$2[(6x)(6x)]+4[(12x - 9)(6x)]$

Solving:

$2[(6x)(6x)]+4[(12x - 9)(6x)]\\=2[36x^2]+4[(12x*6x)-(9*6x)]\\=72x^2+4[72x^2-54x]\\=72x^2+288x^2-216x\\=360x^2-216x$

So, correct Option is B i.e, $72x^2+288x^2-216x$ whose simplified form is: $360x^2-216x$

Keywords: Surface area of the rectangular prism

Learn more about surface area of the rectangular prism at:

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4 0

3 years ago

What is the area of a circle with a radius of 42 in use 3.14 for pi

Vanyuwa [196]

The right answer is 5538.96 units^2

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6 0

2 years ago

Read 2 more answers

Write the equation of a line that is perpendicular to the line that passes through (4,−3)and (−7,8).

masha68 [24]

Line perpendicular to a given line is = 1/m

To find m, use m =y2-y1/x2-x1 formula

m = (8-(-3))/(-7-4)

m = 11/-11,

m = -1

Use y= mx+c to find equation of line

Plug in a pair of values,

-3= -1(4)+ c

c= 1

Thus, equation is:

y = -x+1

Equation of line perpendicular to this line is:

y= x+1

Hope it helps :)

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3 0

3 years ago

Determine the quotient of 1 and 1 over 3 divided by 3 over 5.

natita [175]

1 1/3 divided by 3/5= 2 2/9. Hope this helps :)

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3 years ago