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2 years ago

Which of the following is equivalent to the sum of expressions 2a^2 + 2 and a – 2

Mathematics

1 answer:

Yuki888 [10]2 years ago

4 0

Answer:

Step-by-step explanation:

2a² + 2 + a - 2

+2 and -2 cancel

a² and a aren't like terms

final = 2a² + a

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Pls, help! I don't understand this!

aliya0001 [1]

2. the scale factor is x= 4.5 cm
this is because when u see how much it dilated from 4cm to 2cm it divided from 2, so if u did the same for the other number. Which is 9, it’s 9/2 which equals 4.5

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3 years ago

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Which of the following lines are shown in the drawing?

scZoUnD [109]

Answer:

A, B, D

Step-by-step explanation:

According to the drawing we can see the lines

A) LI, yes
B) GJ, yes
C) CJ, no
D) BE, yes
E) FA, no

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2 years ago

If W(-10, 4), X(-3, -1), and Y(-5, 11) classify ΔWXY by its sides. Show all work to justify your answer.

solniwko [45]

Given:

The vertices of ΔWXY are W(-10, 4), X(-3, -1), and Y(-5, 11).

To find:

Which type of triangle is ΔWXY by its sides.

Solution:

Distance formula:

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

Using distance formula, we get

$WX=\sqrt{(-3-(-10))^2+(-1-4)^2}$

$WX=\sqrt{(-3+10)^2+(-5)^2}$

$WX=\sqrt{(7)^2+(-5)^2}$

$WX=\sqrt49+25}$

$WX=\sqrt{74}$

Similarly,

$XY=\sqrt{\left(-5-\left(-3\right)\right)^2+\left(11-\left(-1\right)\right)^2}=2\sqrt{37}$

$WY=\sqrt{\left(-5-\left(-10\right)\right)^2+\left(11-4\right)^2}=\sqrt{74}$

Now,

$WX=WY$

So, triangle is an isosceles triangles.

and,

$WX^2+WY^2=(\sqrt{74})^2+(\sqrt{74})^2$

$WX^2+WY^2=74+74$

$WX^2+WY^2=148$

$WX^2+WY^2=(2\sqrt{37})^2$

$WX^2+WY^2=WY^2$

So, triangle is right angled triangle.

Therefore, the ΔWXY is an isosceles right angle triangle.

3 0

3 years ago

mr_godi [17]

The correct answer is D.

Have a good day! :)

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3 years ago

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When divding numbers with the same base you________ the exponents

AlladinOne [14]

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

When divding numbers with the same base you <u>subtract</u><u> </u> the exponents ~

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3 years ago

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