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3 years ago

The express the area of the entire rectangle

Mathematics

1 answer:

Sveta_85 [38]3 years ago

3 0

Answer:

The area of the entire rectangle, in standard form, is

x² + 9x + 8

Step-by-step explanation:

Area of the entire rectangle:

area = width * length

area = (x+1)(x+8)

= x*x + x*8 + 1*x + 1*8

= x² + 8x + 1x + 8

= x² + 9x+ 8

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What is the equation of the axis of symmetry of a parabola if its x-intercepts are -3 and 7?

Ostrovityanka [42]

This is a parabola, meaning the equation is a quadratic, so it has 2 roots or x-intercepts, keeping in mind that vertex will lie half-way between those intercepts.

so what's the x-value halfway between -3 and 7? yeap, you guessed it, 2.

so the axis of symmetry for this vertical parabola will be at x = 2.

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3 years ago

Hi! So, I know I got this answer wrong, but I wasn't sure how to solve an equation with signs like: [brackets] in it, I've inclu

dimaraw [331]

Step-by-step explanation:

Brackets is the bigger version of parentheses, you first solve the questions inside the parentheses, then move onto brackets.

For example, this question:

$x=-1\\y=-2\\z=3$

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plug in x, y, and z.

$5(-1)-(-2)[7-4(3-(-2))]$
$5(-1)-(-2)[7-4(5)]$

$5(-1)-(-2)[7-20]$

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$-5-(-2)[-13]$

$-5-26$

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I hope you understand better now.

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2 years ago

Find the Pearson correlation coefficient R for the given point round any intermediate calculation to no less than six decimal pl

ElenaW [278]

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Get the given data values

STEP 2: Write the formula for calculating the coefficient

STEP 3

: Calculate the correlation coefficient

Using the calculator,

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2 years ago

Which inequality is true?

djyliett [7]

Answer:

B is correct

Step-by-step explanation:

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3 years ago

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Solve for X. -3/2(x-2)=45/14 Please show work.

ICE Princess25 [194]

Answer:

-1/7

Step-by-step explanation:

-3/2(x-2)=45/14

x-2=(45/14)/(-3/2)

x-2=(45/14)(-2/3)

x-2=-90/42

simplify -90/42 into -15/7

x-2=-15/7

x=-15/7+2

x=-15/7+14/7

x=-1/7

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3 years ago

Read 2 more answers