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1 year ago

6(2x²-5) = [?] x = -3

Mathematics

2 answers:

Korvikt [17]1 year ago

5 0

Answer:

Step-by-step explanation:

plug in -3 as x

6(2(-3)^2-5)

6(2(9)-5)

6(18-5)

6(13)

r-ruslan [8.4K]1 year ago

5 0

Answer: 78

Step-by-Step Solution:

=> 6(2x² - 5) ; when x = -3

Substitute the value of ‘x’ :-

= 6(2x² - 5)
= 6(2(-3)² - 5)
= 6(2(9) - 5)
= 6(18 - 5)
= 6(13)
= 6 * 13
=> 78

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tensa zangetsu [6.8K]

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2 years ago

The equation of liner is y = -x - 6. Line s includes the point (-1, -3) and is parallel to line

Reptile [31]

Answer:

90 hardcover books

Step-by-step explanation:

We can solve this by setting up a couple of equations.

Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.

Using the information in the question, we can write the equations:

1)x = 4y-3

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Let's rearrange equation 1 so that it is in standard form:

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And then let's multiply equation 2 by 4 so that we can cancel out y when we solve the system of equations:

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4x+4y=1,788

Then we can add the two equations and solve for x:

1) x-4y=-3

+ 2)4x+4y=1,788

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5x=1,785

x=357

So now we now the number of paperback books Tim has is 357. Let's plug this into one of the original equations to solve for the number of hardcover books (y):

357+y=447

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And now we know that Tim owns 90 hardcover books.

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2 years ago

A scale drawing of an American flag is 6 inches tall. The actual flag is 3 feet tall. What is the scale of the drawing?

poizon [28]

That would be 12 in a half?

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2 years ago

Joseph wants to estimate 1 3/7 . 5 4/5 To estimate, he simplifies the expression 1 1/2 . 6 Is Joseph’s estimate an underestimate

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Well if her simplifies 1 3/7 to 1 1/2 and 5 4/5 to 6 then he would be overestimating because 1 1/2 is greater than 1 3/7 and 6 is greater than 5 4/5

Hope this helps!

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3 years ago

Please answer and no links please and thank you.

sweet [91]

Answer:

286 mm²

Step-by-step explanation:

A trapezium is given with ,

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The area is given by :-

$:\implies$ Area = 1/2 ( b₁ + b ₂) × h

$:\implies$ Area = 1/2 ( 24 + 28)×11 mm²

$:\implies$ Area = 1/2 × 52× 11mm²

$:\implies$ Area = 286 mm²

<h3>Hence the area of the trapezium is 286 mm².</h3>

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2 years ago