3 years ago

Idk how to do this and I need it in an hour

Mathematics

1 answer:

olchik [2.2K]3 years ago

4 0

Answer:

a) $2x^2+8-5x+-3x^2-4+7x\\\\= -1x^2+2x+4$

b) $2x^2+8-5x--3x^2-4+7x\\\\= 5x^2+2x+4$

You might be interested in

Subtract: 2x^2 - 4x - 3 from x^2 - 5x - 8.

lesya692 [45]

The answer is: -x^2-x-5

8 0

3 years ago

What is the area of the trapezoid? 91 in 2 182 in. 2 140 in 2 120 in. 2

mihalych1998 [28]

Answer: 91

Step-by-step explanation:

the equation to find the area of a trapezoid is as follows:

A = (a+b)/2h

So A = 6+20 which is 26

then you divide 26 by two which gives you 13, then multiply by 7

3 0

3 years ago

I need help with this question pls!

gladu [14]

Answer:

Answer is D

Step-by-step explanation:

cuh s

7 0

3 years ago

Can someone solve this?

Gemiola [76]

Answer:

B : $4x\sqrt{17}$

Step-by-step explanation:

If you divide a rhombus using its diagonals, you get 4 right triangles, whose legs are both 1/2 the length of the diagonals.

This means that the legs of one of those 4 triangles have lengths of 2x/2, and 8x/2, so the legs of one of those triangles x and 4x. This makes the length of one side equal to $\sqrt{x^{2} + (4x)^{2}} = \sqrt{17x^2} = x\sqrt{17}$ . Because all 4 sides are the same length, you multiply this value by 4, and get $4x\sqrt{17}$ , which is B.

4 0

3 years ago

Neeeeeed help not sure please help asap

lyudmila [28]

The correct answer is c

(it is 3 times the sum of 6 + 5 not 3 times 6 like a is suggesting)

3 0

3 years ago