please answer ill give brainliest

Answer:

the answers B and D are correct

Answer:

B & D

Step-by-step explanation:

It can-t be A, because that would mean 20², which equals 400, would equal 20.

B is correct because even though it's negative, negative times negative = positive, which would mean that (-sqrt of 20)(-sqrt of 20)=20.

C is wrong because sqrt -20 is an imaginary number,which is a completely different topic.

D is correct because it's the same thing as B, but without the 2 negaties cancelling each other out.

E is the same as A, except it's '-20' x '-20', whcih is still 400, which is still wrong

Hope this helps :)

Answer: The number is 0

Step-by-step explanation:

8 = 7x + 8

Then we solve it:

8 = 7x + 8

8 - 8 = 7x

0 = 7x

0 ÷ 7 = x

x = 0

hope this helps have a nice day

Step-by-step explanation:

long hair

15 - 12 = 3

long hair percentage

= 3 ÷ 15 × 100

= 20%

Answer:

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Twenty Eight Divided By Seven Equals Four

l x w = area

7 x 4 = 28

Answer:

This app "Brainly" Is for students by student.

Step-by-step explanation:

Its a platform that allow students to ask students questions, and you help each other out. The points are just a way to reward people for answering.

Hope this helps!

All the love, Ya boi Fraser :)

yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeessssssssssssssssssssssssssssAnswer:

Step-by-step explanation:

Answer:

25x + 35(2x) = 380

25x + 70x = 380

95x = 380 so

x = 4

then i think that mean it might be 8 then im not completly sure

Answer:

x=15 degrees

Step-by-step explanation:

You know that the right angle is split in half to 45 degrees and 3x degrees. Because a right angle is equal to 90 degrees, 3x has to be equal to 45. Therefore, the equation will be 3x=45. You want to make x equal one so you have to divide 3 by each side. The equation will be x=45/3. Simplify that to get x=15. Therefore, x=15 degrees.

If this has helped you, please mark this answer as the brainliest

Answer:

your answer would be 1253in^3

Step-by-step explanation:

there are two boxes

one box has the dimensions 7,5,5

the other has the dimensions 14,11,7

you would have to multiply all the dimensions

7*7*5=175

14*11*7=1078

then you add the two products together

1078+175=1253

hope this helps! have a nice day :)

Answer:

1253in^3

Step-by-step explanation:

7*7*5=175

14*11*7=1078

then you add the two products together

1078+175=1253in ^3

i hoped i helped ^ ^

Answer:

1. 4.2 x 10^-7

2. 2.9 x 10^-6

3. 7.1 x 10^-2

4. 2.56 x 10^5

Answer:

least to greatest

4.2 * 10^-7

2.9*10^-6

7.1 * 10^-2

2.56 * 10^5

Step-by-step explanation:

2.56 * 10^5 =256000

4.2 * 10^-7 =0.00000042

7.1 * 10^-2 =0.071

2.9*10^-6 = 0.0000029

Answer:

24000 grams

Step-by-step explanation:

1kg = 1000 grams

So 24kg × 1000 = 24000 grams

Answer:

The X- intercept is (7/5,0) and the Y intercept is (0,-21/2)

Step-by-step explanation:

Answer:

a)  $498

b) $1052

c) $554

Step-by-step explanation:

to find the median of lower half of data:  find median of all the data, then find middle value from the minimum value to the median (not including median)

to find the median of upper half of data:  find median of all the data, then find middle value from the median to the maximum value (not including median)

interquartile range (IQR) is the difference of the two

Answer:

112*

Step-by-step explanation:

The easy way to figure this out is to take the two numbers we do have and add them together. 50 + 62 = 112

We now now the complete angle if that line was not there in the middle. and sice that angle is the same at angle X it is automatically the same, 112. If you don't understand please comment and let me know.

Answer:

y=-1/4x+5

Step-by-step explanation:

Use the point-slope form which is y-y1=m(x-x1) where m is the slope. In this case, y is equal to 3, and x is equal to 8, and the slope is equal to -1/4. Therefore, the equation will be equal to y-3=-1/4(x-8). Simplify that to get        y-3=-1/4x+2. Simplify this again to get y=-1/4x+5. Therefore, the equation is y=-1/4x+5.

Answer:

y = -1/4x + 5

Step-by-step explanation:

Since the lines are parallel, they have the same slope, which is -1/4

Use the point-slope form to do this problem

[tex]y - y_{1} = m(x - x_{1})[/tex]  Memorize this form. OK?

y - 3 = -1/4(x - 8)

4y - 12 = -1(x - 8) = -x + 8

4y = -x + 20

y = -1/4x + 5

Answer: 8

Step-by-step explanation:

Answer: 8 pizzas.

Step-by-step explanation:If she is ordering 4 pizzas for 15 people then that simply means that the fraction is 4/15, 15*2 is 30, so that means that our next fraction (Equivalent fraction) will be like this 4/15 = -/30. What ever. Happens to the numerator must happen to the denominator and vice versa. So 4*2 is 8. So the answer is 8.

Answer:

3x³yz³

Step-by-step explanation:

18x⁶y²z⁵/6x³yz²​ = 18/6 x⁶⁻³ y²⁻¹ z⁵⁻² = 3x³yz³

Answer:

The fourth one is correct

Answer:

D

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer:

88 ft^2

Step-by-step explanation:

For a rectangular prism with dimensions 1 ft by 8 ft by 4 ft, there are two opposite faces with dimensions

1 ft by 8 ft,

two opposite faces with dimensions

1 ft by 4 ft,

and two opposite faces with dimensions

4 ft by 8 ft.

We find their area and add them.

SA = 2 * 1 ft * 8 ft + 2 * 1 ft * 4 ft + 2 * 4 ft * 8 ft

SA = 16 ft^2 + 8 ft^2 + 64 ft^2

SA = 88 ft^2

[tex]area \: ofhemisphere\\ \frac{3}{4} \pi \: r {}^{2} h[/tex]

Answer:

she walked the fastest around the 2 hour mark and she walked 4 miles per hour

Step-by-step explanation:

This slope is the steepest if we count it, and it comes out to 4 miles per hour.

Thanks for Brianliest :D

Answer:

47.74

Step-by-step explanation:

Answer:

x=20

Step-by-step explanation:

ok so that is a pentagon and if you didnt know all of the angles in a pentagon add up to equal 540

so we setup an equation which would be

7x+4x+5+4x+10+5x-5+6x+10=540 and now we just solve for x

step 1 combine like terms

7x+4x=11x

11x+4x=15x

15x+5x=20x

20x+6x=26x

5+10=15

15-5=10

10+10=20

now we have

20+26x=540

step 2 subtract each side by 20

20-20 cancels out

540-20=520

now we have 26x=540

the final step is to divide each side by 26

26/26 cancels out

540/26=20

x=20

hope this helps :D

Answer:

Step-by-step explanation:

x^2 + 3x + 2 = (x+1)(x+2)

x^2 + 4x + 3 = (x+1)(x+3)

LCM = (x+1)(x+2)(x+3) = (x^2 + 3x + 2) (x+3) = x^3 + 6x^2 + 11x + 6

Step-by-step explanation:

1st expression

x2 + 3x + 2

x²+2x+x+2

x(x+2)+1(x+2)

(x+2)(x+1)

2nd expression

x2 + 4x + 3

x²+3x+x+3

x(x+3)+1(x+3)

(x+3)(x+1)

L.C.M=(x+1)(x+2)(x+3)

Answer:

A would be a good form of the answer

Answer:

x = 13

Step-by-step explanation:

(x-1)/(x+2) = 8/10

10(x-1) = 8(x+2)

10x-10 = 8x+16

2x = 26

x = 13

Answer: -46

Step-by-step explanation: Place -7 into the equation. 4(-7-5)+2= 4*-7=-28,-4*5=20. Negative 28 minus 20 is -48. Negative 48 + 2 is -46.