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4 years ago

The blue dot is at what value on the number line!?

Mathematics

1 answer:

notka56 [123]4 years ago

3 0

Answer:

Step-by-step explanation:

It is counting by -2

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Which factors of -24 are used to factor x^{2}+2x-24

Vlad [161]

Answer:

Step-by-step explanation:

6 , -4

Reason:

If you add 6 and (-4) , you will get 2 & if you multiply 6 and -4, you will get -24

5 0

3 years ago

Is 7x2+4-2(7+3)

Bingel [31]

C order of operations

8 0

3 years ago

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The slope of the line is..?<br> A. -2<br> B. -1<br> C. 1<br> D. 2

Nezavi [6.7K]

Answer:

B, -1

Step-by-step explanation:

on a graph with 2 points (or more) listed, you can count the points from each coordinate to determine slope (which is rise/run also known as y/x)

going from left to right, we start at (1,4) and count down from (1,4) to (3,2), we go down 2 units

going from left toright again, we start from (1,2) (our point we counted down to from (1,4) and count to the left 2 units

we are now at (3,2)

it took us 2 points down (negative) and 2 to the right (positive) to get from (1,4) to (3,2)

using rise/run we have the following:

-2/2 < we can simplify this further by dividing -2 by 2 and getting 1

the answer is B, -1

ANOTHER WAY

another way we can calculate the slope is by the following formula

y2 - y1/ x2- x1

(1,4) is our x1 and y1, while (3,2) is our x2, y2. we plug this into the formula and we get:

y2 - y1 = 2 - 4 = -2

x2 - x1 = 3 - 1 = 2

-2 / 2 = -1

we still have the same answer, and this formula is useful when you dont have a graph to count down from

4 0

4 years ago

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The sides of ∆ABC are 30 units, 40 units, and 60 units long. The corresponding sides of ∆XYZ are r times as long as the sides of

san4es73 [151]

Part a) Find the expression that gives the perimeter of ∆XYZ

we know that

Perimeter of triangle ABC is equal to

$P=30+40+60\\ P=130\ units$

In this problem ∆ABC and ∆XYZ are similar triangles

the scale factor is equal to r

$scale\ factor=r \\ \\ scale\ factor=\frac{perimeter\ triangle\ XYZ}{perimeter\ triangle\ ABC} \\ \\ perimeter\ triangle\ XYZ=perimeter\ triangle\ ABC*scale factor\\ \\ perimeter\ triangle\ XYZ=130*r$

therefore

the answer Part a) is

The expression that gives the perimeter of ∆XYZ is $130*r\ units$

Part b) Find the expression that gives the area of ∆XYZ

we know that

$Area\ of\ triangle\ ABC=n\ units^{2}$

$scale\ factor=r \\ \\ scale\ factor^{2}=\frac{Area\ triangle\ XYZ}{Area\ triangle\ ABC} \\ \\ Area\ triangle\ XYZ=Area\ triangle\ ABC*scale factor^{2}\\ \\ Area\ triangle\ XYZ=n*r^{2}\ units^{2}$

therefore

the answer Part b) is

The expression that gives the Area of ∆XYZ is $n*r^{2}\ units^{2}$

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3 years ago

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2/3 divided into 4 groups, what fraction represents the answer to this question?

kondaur [170]

2/3 ÷ 4 = 2/3 * 1/4 = 2/12 = 1/6

5 0

3 years ago

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