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3 years ago

A rectangle has side lengths of (2x+3) and (3x - 4).

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

4 0

Answer:

Area=6x^2+9x-12 Perimeter= 5x-1

Step-by-step explanation:

when finding the are of a rectangle you multiply both sides together.

(2x+3)*(3x-4)

Distributive Property

6x^2-8x+9x-12

Simplify

6x^2+x-12

To find the Perimeter you have to add both sides

2x+3+3x-4

5x-1

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I believe 10 bald eagles plz correct me if I'm wrong

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3 years ago

What is the slope of the line that passes through the points (2, 3) <br> and (–2, 6)?

saw5 [17]

Slope = (6 - 3)/(-2-2)
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answer
slope = -3/4

4 0

3 years ago

Read 2 more answers

marie hikes at a rate of 2 miles per hour if she hiked for 6 and 2/5 hours how many miles will she hike

hram777 [196]

Well, for this question we can start off by making an equation

(6.4)2

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5 0

3 years ago

William has 3 jars of marbles to share equally with his brother the first jar holds 12 marbles the second jar holds 21 marbles t

meriva

Answer:

Each boy will get <u>25</u> marbles.

Step-by-step explanation:

Given:

William has 3 jars of marbles to share equally with his brother the first jar holds 12 marbles the second jar holds 21 marbles the last jar holds 17 marbles.

Now, to write an expression using parentheses to find number of marbles each boy get.

Let the number of marbles each boy get be $x.$

Total number of boys = 2.

Number of marbles first jar holds = 12.

Second jar holds = 21.

And third jar holds = 17.

As given, William shares marbles equally with his brother.

Now, we write the expression to find the number of marbles each boy get:

$x=\frac{(12+21+17)}{2}$

$x=\frac{12}{2} +\frac{21}{2} +\frac{17}{2}$

$x=6+10.5+8.5$

$x=25.$

Therefore, each boy will get 25 marbles.

4 0

3 years ago

Will give brainliest, thanks, and 5 stars! LOTS OF POINTS! 50 POINTS!

lubasha [3.4K]

Answer in order:

False

True

False

True

Step-by-step explanation:

All of the solutions to the equation $3x^2 - 12 = 0$ are x = 12 and x = -12

Solve:

Common factor - $3(x^2-4)=0$

Divide both sides

$x^2-4=0$

Use the quadratic formula

$x=\sqrt{4,x}=\sqrt{-4$

x = 2, x = -2

Thus, This is false..

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There are two unique solutions to the equations (x-3)^2 = 16

one variable in matrix = one possible value.

Therefore, x = 7, x = -1

Hence this is True

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The solutions for the equation 2(x-3)^2-18 = 0 are x = 6 and x = 0

$2x^3-18x^2+54x-72=0$

$x=5.080084$

Hence this is false

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The solutions for the equation 2(x-5)^2-8=0 are x = 7 and x = -7

Add both sides by 8

2(x-5)^2-8+8=0+8

2(x-5)^2=8

(x-5)^2=4

x = 7, x = 3

Hence, this is false

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The solutions for the equation (x + 3)^2-25 = -8 are x = 2 and x = -8

$(x+3)^2=17$

$x=\sqrt{17-3,}=-\sqrt{17}-3$

Hence this is false.

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The solutions for the equation 2(2x-1)^2=18 are x = 5 and x = -4

$(2x-1)^2=9$

x=2, x = -1

Hence this is false.

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The only solution for equation (2x-1)^2-49=0 is x = 4

$(2x-1)^2=49$

x = 4, x = -3

Hence, this is false

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The solutions for the equation 3(x+2)^2 - 3 = 0 are x = -3 and x = -1

$3(x+2)^2=3$

$(x+2)^2=1$

x = -1, x = -3

Hence, this is true

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The solutions for the equation 5x^2 - 180 = 0 are x = 6 and x = -6

Add 180 to both sides

$5x^2-180+180=0+180$

$5x^2 = 180$

$x^2 = 36$

$x=\sqrt{36},x=-\sqrt{36}$

x = 6, x = -6

Hence, this is true.

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[RevyBreeze]

7 0

3 years ago