NEED HELP ASAP I don’t get it

Answer: -x^2-2x-1

Step-by-step explanation:

Answer:

a)2.90m

c) 4700m

Step-by-step explanation:

I know answers for these only

please give brainliest

Answer: 15

Step-by-step explanation:

8x-60°

8(15)-60°

120°-60°

60°

X WILL EQUAL 15 BECAUSE 120 - 60 WILL EQUAL 60!

THE TRIANGLE MUST ADD UP TO 180°!!

Answer:

x=15

Step-by-step explanation:

too hard to explain but

all triangles are 180 degrees

so

60 plus 60 = 120

180-120 = 60

60+60=8x

120=8x

120/8 =

15

Answer:

x=8

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

if you can't use calculator, you must know that after a number being square root, it MUST be in positive

for the negative answer will be false

so for the rest of the answer you need to try it

3² = 9 < 10 so it's true

4² =16 > 10 so it's false

the only answer is 3

Answer:

x = 20 ft

Area of the living room = 400 ft²

Step-by-step explanation:

From the picture attached,

Length of rug = (x - 3) ft

Width of the rug = (x - 9) ft

Area of the rectangular rug = Length × Width

                                              = (x - 3)(x - 9)

187 = (x - 3)(x -9)

187 = x² - 12x + 27

x² - 12x - 160 = 0

x² - 20x + 8x - 160 = 0

x(x - 20) + 8(x - 20) = 0

(x - 20)(x + 8) = 0

x = -8, 20

Since, measure of 'x' can't be negative, measure of x will be 20 ft.

Therefore, area of the square living room = x²

                                                                     = (20)²

                                                                     = 400 ft²

Answer:

i

Step-by-step explanation:

Answer:

12 feet

Step-by-step explanation:

use the pythagorean theorem to figure out what the hypotenuse is

3.5^2+3.5^2=x^2

12.25+12.25=x^2

25=x^2

x=5

now that you know the hypotenuse, you can find the perimeter by adding up all the sides

3.5+3.5+5=12

Answer:

300-10w<170

subtract 300 from both sides

-10w<-130

divide by -10, because we are dividing a negative number the inequality sign changes

w>13

(brainlyest appreciated!)

Answer:

The stem-and-leaf plot shows the test scores of a science class. Use the plot to answer the question. 1.how many students scored 78? (1 point) 1 student 2 students 3 students 4 students

the table shows the results of a survey of college students. find the probability that a student's first class of the day is a humanities class, given the student is female. First class of the day for college students male female humanities 70 80 science

Everyone in Andy’s class has to do a science project. Out of the 20 students, 80% have completed their project. How many students still need to finish their projects (got 4 students)

How many of the 28 students in Andy's class are boys, if 4/7 are girls?

Step-by-step explanation:

Answer:

C) ∠LMO = 50°

Step-by-step explanation:

When you add the degrees of all the angles in a triangle, you get 180, so...

180 = 60 + 70 + x

180 - 60 - 70 = x

x = 50

Answer:

C

Step-by-step explanation:

Answer:

-5 is the x and 10/3 is the y i think

Step-by-step explanation:

y=1/2X+5 or y=X/2+5 is the equation

Answer:

12. x = 48

13. x = 7

Step-by-step explanation:

x/6 = 8

x = 8*6

x = 48

28 = 4x

28/4 = x

x = 7

Answer:

12) x/6 = 8

13) 28 = 4x

Answer:

11:15 am

Step-by-step explanation:

Answer:

It must be put in at 11:15 AM

Step-by-step explanation:

all you do is count back 4 hours and 45 minutes from 3:00

Answer:

125

Step-by-step explanation:

Answer:57.5

Step-by-step explanation:

057

6 345

0

34

30

 45

 42

   3

u have a remainder of 3 so u add .5 to 57

Answer:

H0: Ud >= 0

H1: UD < 0

Step-by-step explanation:

We have the sample size = 81

Mean of x = 107

The alpha level was not given for me to help you calculate further.

This researcher wants to know if increasing reading speed brings about a decrease in the comprehension of the reader.

The hypothesis are

Null hypothesis

H0: U >= 0

Alternative hypothesis

H1: U < 0

Thank you

Answer:

2x + 7

Step-by-step explanation:

Hi,

Combine like terms. 6x - 4x is 2x. 10 - 3 is 7.

Hope this helps :)

Answer:

y = -x +2

Step-by-step explanation:

First let's find the slope.

(-1,3) and (4,-2)

3 - -2/ -1 - 4 = 5/-5 = -1

Slope = -1

Now let's use slope intercept form:

y1-y2=m(x1-x2)

Let's plug in our slope for m.

y1-y2= -1 (x1-x2)

And now let's substitute y2 and x2 for one of our points, I'll use (4,-2)

y1+2 = -1(x1- 4)

y= -x + 4 -2

y = -x +2

Answer: Your answer should be 8.5 π

The formula to find the length of an arc is:

m ∘ 360 ∘ 2 π r  

120 /360  2 π ( 12.6 )

120 /360  25.2 π

Simplify  120 /360  to  1 /3  and finish the other simplifying:

1 /3  25.2 π

25.2 /3 π

Since they want the answer expressed by  π ,  8.5π  is the answer.

Answer:

I just took the test and got it wrong the first time. The correct answer is: 7π cm.

Step-by-step explanation:

Answer:

go everything youve learnt from grade 3 come right up

Step-by-step explanation:

sometimes its knowing the simply formulas thatll get you through

Step-by-step explanation:

To find how much 75% we multiply 100 with 75 and divide it with 100

75 × 10 ÷ 100 = 7.5

we need to do same with Noah's money

25 × 30 ÷ 100 = 7.5 Noah is correct, they have same amount.

Answer:

area = 132 cm²

Step-by-step explanation:

area of rectangle = 7 x 12 = 84

area of one triangle = 8 x 6 x 0.5 = 24

total area = 84 + 24 + 24 = 132 cm²

Answer:

The sum of two numbers is 14 and their difference is 10

Step-by-step explanation:

"2 numbers (x and y)

x+y = 14

and x-y + 10

If you each equation by positive 2, one gets 2x+2y = 28 and 2x-2y = 20

The 'y-terms' cancel out or equal zero when adding, so 4x = 48, divide by 4 on each side and x or the first number equals 12.

Plug 12 back into the equation for 'x' and subtract 12 on both sides so that y=2

The difference of 12-2=10 and the addition of 12 and 2 equals 14"

hopes this helps