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3 years ago

Match the verbal expression (term) with its algebraic expression (definition)

Mathematics

1 answer:

Liula [17]3 years ago

5 0

A variable cubed D) x³

Quotient of some number and three E) b ÷ 3

Product of an unknown value and three B) 3a

Three less than a variable A) y - 3

Three more than some number C) z + 3

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James sold 450 tickets for the community play. Tickets for children cost $2, and tickets for adults cost $5. James sold $1,800 w

Nataly [62]

A.T.Q, equations will be:

x+y = 450

2x+5y= 1800

Substitute value of x from equation (1), in equation (2)

2(450-y) +5y=1800

900-2y+5y=1800

3y=900

y=300

so, your answer is 300

3 0

4 years ago

Is quadrilateral jklm the result of a dilation of quadrilateral abcd by a scale factor of 2? why or why not?

4vir4ik [10]

No. Because sides JM and KL have different slopes from sides AD and BC .

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

For AD:

We have the points A(2, -2) and D(1, -4). Substitute:

$m=\dfrac{-4-(-2)}{1-2}=\dfrac{-2}{-1}=2$

For JM:

We have the points J(4, -4) and M(2, -9). Substitute:

$m=\dfrac{-9-(-4)}{2-4}=\dfrac{-5}{-2}=2.5$

$2\neq2.5$

----------------------------------------

Another argument.

No. Because the MJ is not twice as long as AD.

The formula of the length of a segment:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of AD:

$|AD|=\sqrt{(1-2)^2+(-4-(-2))^2}=\sqrt{(-1)^2+(-2)^2}=\sqrt{1+4}=\sqrt5$

The length of MJ:

$|MJ|=\sqrt{(2-4)^2+(-9-(-4))^2}=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}$

$\sqrt{29}\neq2\sqrt5$

4 0

4 years ago

PLEASE HURRY!!! what is the slope of the graph?

hjlf

The slope is 2 i’m pretty sure

8 0

3 years ago

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16/21 divided by 4/9

leonid [27]

16/21 divided by 4/9 is equivalent to 16/21 x 9/4 = 144/84 which reduces to 12/7. So 12/7 is your answer.

7 0

3 years ago

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Round 458,673 to the nearest hundred thousand

Viefleur [7K]

500,000 is that number rounded.

4 0

3 years ago

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