Mathematics Middle School

need by tonight plz help me

Answers

Answer 1

Answer:

Step-by-step explanation:

Diameter = 18 m

D= 2*r

r = d/2

r =18/2

r = 9

Circumference = 2 * pi * r

C = 2 * 3.14 * 9

C = 56.52

Area = pi r^2

Area = 3.14 * 9^2

Area = 3.14 * 81

Area = 254.34

Answer 2

Answer:

Radius=9

Circumference= 56.52 or 56.52

Area= I not sure

Step-by-step explanation:

Radius= 18 divided by 2 equals 9

Circumference= 18 times 3.14

I'm sorry if it's wrong, I kinda forgotten about this lesson.

Related Questions

Esme uses her bank card to pay for a car wash 4 times. Each car wash costs $16.75. She then deposits $60 in her bank account.

Answers

Answer:

It costed in total 67.00 dollars buit then subtract 60 that makes 7

Step-by-step explanation:

Does anyone also understand this?

Answers

Answer:

See explanation

Step-by-step explanation:

So, the angle for QRS is the interior angle of R. The exterior angle outside of angle R is for the equation you are going to use. Because angle R is on a straight line, the interior angle of R plus the exterior angle of R will equal 180 degrees. From there you should be able to calculate the rest of the angles, I believe you should be able to calculate y first.

All of the angles in a triangle add up to 180. From there you make an equation which would give you the value of y.

We know that the bottom line is straight, so it equals 180*. QRS is supplementary to the R* angle, which is 144*. All supplementary angles add up to 180, so 180-144 would give us 36* for the Value of QRS.

Now we know QRS=36* and the sum of all the angles is 180, we can write the equation
6y + 36 =180
y= 24

Now you plug the y in ... giving you the value of angle S to be 24* and angle Q to be 120.

QRS = 36*
Q= 120

On a coordinate grid, point A is located in the first quadrant. Point B is located at (2, - 1/2
Point C is a reflection of point B across the y-axis. Which graph shows these three points?

Answers

Answer:

the answer I think is B so

The graph attached correctly labels the points A, B and C.

What is the meaning of reflection of figure?

A reflection is a mirror image of the shape. An image will reflect through a line, known as the line of reflection.

Given is that on a coordinate grid, point {A} is located in the first quadrant. Point B is located at (2, -1/2). Point C is a reflection of point B across the y-axis.

Since the complete graphs are not given. Refer to the graph attached for correct plotted points.

Therefore, the graph attached correctly labels the points A, B and C.

To solve more questions on Reflection of points, visit the link below-

https://brainly.com/question/1548989

#SPJ2

Brainliest to the first right

Answers

10.90871211463571 i think?

How do you convert 20x + 9y = 9 into slope intercept form?

Answers

Answer:

[tex] y = - \frac{20}{9} x + 1 [/tex]

Step-by-step explanation:

[tex]20x + 9y = 9 \\ \\ 9y = - 20x + 9 \\ \\ y = - \frac{20}{9} x + \frac{9}{9} \\ \\\purple {y = - \frac{20}{9} x + 1} \\ this \: is \: the \: required \: \\slope \: - intercept \: form \\ \ \\ where \: \\ slope \: = - \frac{20}{9} \\ \\ y - intercept = 1[/tex]

20x+9y=9

First, the formula for slope intercept is y=mx+b
So, in order to get it in the slope form we have to subtract 20x from both sides.
We end up with, 9y=-20x+9
We have to get rid of the 9 so we divide.
9y=-20x+9
/9 /9. /9
I don’t want to write the answer because I want you too find it out. :) hope this helps!

I need help right now

You are ordering pizzas to share with friends. If you consider 3 slices (or 3/8 of a pizza) to be a single serving, how many servings will you get if you order 3 pizzas?
3 slices = 3/8 of a pizza 1 pizza = 8 slices 3 pizzas = 24 slices

Answers

Answer:

I belive you would get 8 servings in 3 pizzas. 24 divided by 3 is eight

Step-by-step explanation:

True or False

Scale Factors can be written as fractions in simplest form.

Answers

Answer:

TRUE

Step-by-step explanation:

scale factor is the ratio of the model measurement to the actual measurement in simplest form

PLS MARK AS BRAINLIEST...

True please give brainliest

please solve this question asap :)

Answers

Answer:

36.695 approx 36.7

Step-by-step explanation:

find the area of the top triangle and then add it to the area of the bottom rectangle

Area of the triangle: (bh)/2

3.5*4.1=14.35

14.35/2=7.175

Area of the rectangle: bh

4.1*7.2=29.52

Total (add the two values)

29.52+7.175

=36.695

The answer is b I took this quiz before

How do you convert 14x + 19y = 20 into slope intercept form?

Answers

Subtract 14x from both sides. Then divide both sides by 19

[tex]14x + 19y = 20\\\\19y = 20-14x\\\\19y = -14x+20\\\\y = \frac{-14x+20}{19}\\\\y = \frac{-14x}{19}+\frac{20}{19}\\\\y = -\frac{14}{19}x+\frac{20}{19}\\\\[/tex]

The equation is now in slope intercept form y = mx+b

m = -14/19 is the slope

b = 20/19 is the y intercept

The answer is in the photo lmk if you need any clarification

k/7 + 3 − 2k = −3
Explain how to solve the problem. SHOW YOUR WORK!

Answers

Answer: 42/13

Step-by-step explanation: Multiply everything by 7 to eliminate the fraction:

k+ 21 - 14k = -21

Isolate the variable:

k - 14k = -21-21

13k= -42

divide the sides by -13.

42/13

42/13

Hope this helped

BRAINLIEST!!! Lorenzo deposited $60 in a savings account earning 10% interest, compounded annually.

To the nearest cent, how much will he have in 2 years?

Answers

Answer: it way be 72.60$ but i’m not sure

solve for x: 4.72 = 3.25 + x

Answers

X=1.47
Step by step:-

Please help with this

Answers

I thinks is A or B if not I’m sorry

i think it should be b

Explain the difference between −√25 and √-25

Answers

Answer:

you can't solve [tex]\sqrt{-25}[/tex] and -[tex]\sqrt{25}[/tex] is -5

Step-by-step explanation:

-1/3(24+3)-1
i need help please
it is 24 points

Answers

Um -1/3(24+3)-1 = -10

So -10 is the answer

I saw someone answered but didn’t explain first you have to do the equation inside the parentheses so 24+3 so the equation is then -1/3(21)-1 and then you do the multiplication which is -1/3*21 which is -7 so then it’s -7-1 which is -8

Mindy's dog, Rex, weighed 80 pounds a year ago. Now he weighs 92 pounds. What is the percent increase in his weight? A. 13% B. 12% C. 15% D. 16%

Answers

Explanation - Given that Rex's weight changed from 80 pounds to 92 pounds. Hence, percentage increase in Rex's weight in a year is 15 %.

-7s>14 solve but i have to graph it so is it open or closed symbol

Answers

Answer:

s>-2

Step-by-step explanation:

im not sure what you looking for but thats the awnser

A scale model of a boat is 6 inches long. The actual boat is 42 feet long. Which statement(s) are true??

Answers

Answer:

B. 1 in = 7 ft

Step-by-step explanation:

Since on the scale the boat was 6 inches and the actual boat was 42 feet, we need to divide to see how many feet correlate to the number on inches on the scale. So we do 42 / 6, which equals 7. This means that for every inch on the scale, it will be 7 feet in real life.

the answer is B. hope this helps

The temperature in degrees Fahrenheit, F, is related to the temperature in degrees Celsius, C, by the equation F=9/5C+32.

a. In the Sahara desert, temperatures often reach 50 degrees Celsius. How many degrees Fahrenheit is this?

degrees Fahrenheit

b. In parts of Alaska, the temperatures can reach -60 degrees Fahrenheit. How many degrees Celsius is this?

degrees Celsius

c. There is one temperature where the degrees Fahrenheit and degrees Celsius are the same, so that C=F. Use the expression from the equation, where F is expressed in terms of C, to solve for this temperature.

C =

Answers

Answer:

33.8

Step-by-step explanation:

9/5C=1.8C+32=33.8

I need help on this too I don’t know which one it is

Solve For X: 2.37 = 0.58 + X

Answers

X= 1.79

2.37=0.58+x
-0.58
—————————-
1.79

I believe it is 1.79!

HELP PLEASE THIS IS DUE AT 9:50 MY TEACHER IS STRIIIICT ABOUT HOMEWORK

Answers

Answer:

[tex] \sqrt[3]{?} 3375 [/tex]

Your teacher should be arrested

what is 9/15 estiamted to 0,1/2,1

Answers

Answer:

.........

Step-by-step explanation:

Ummm I think you put this in the wrong grade level

Somebody Pleases help me on this problem

Answers

Answer:

-49 275/1000

Step-by-step explanation:

The answer should be -49 11/40

Which values for x make this inequality false?

Answers

Answer:

0, -11, -5, and 20

Step-by-step explanation:

The inequality can be read as x is less than -12.8 (or -12.8 is greater than x)

This means that we need to pick x values that are greater than -12.8 for the inequality to be false.

The values greater than -12.8 are:

0, -11, -5, and 20

-5 makes the x value false

Urgent help pleaseeeeeee

Answers

Answer:

2x - 10 = 10 - 3x

Simplifying

2x + -10 = 10 + -3x

Reorder the terms:

-10 + 2x = 10 + -3x

Solving

-10 + 2x = 10 + -3x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3x' to each side of the equation.

-10 + 2x + 3x = 10 + -3x + 3x

Combine like terms: 2x + 3x = 5x

-10 + 5x = 10 + -3x + 3x

Combine like terms: -3x + 3x = 0

-10 + 5x = 10 + 0

-10 + 5x = 10

Add '10' to each side of the equation.

-10 + 10 + 5x = 10 + 10

Combine like terms: -10 + 10 = 0

0 + 5x = 10 + 10

5x = 10 + 10

Combine like terms: 10 + 10 = 20

5x = 20

Divide each side by '5'.

x = 4

Simplifying

x = 4

Answer

pick C

Step-by-step explanation:

the answer is 2x+12

I also need to show my work so if somebody could help explain how i do that i’d appreciate it.

Answers

Answer:

<A = 68° <B = 44°

Step by step:

(the picture)

To find the value of x you u have to add all angles

68 + x + (x - 24) = 180

Remove parenthesis

68 + x + x - 24 = 180

Combine like terms

44 + 2x = 180

Get x on one side of the equation

44 + 2x = 180
-44 -44

2x = 136

Divide each side by 2 to isolate x

2x/2 = 136/2

x = 68

now that you have x you can put it into the equations

A = 68°

B = (x - 24)
B = (68 - 24)

B = 44°

You are making a new recipe for dinner. The recipe has the following proportional relationship. 8 cups of corn for 4 cups of sauce 32 cups of 16 for cups of sauce Find the constant of proportionality. Find how many cups of corn you need for 7 cups of sauce.
(please help me with this I don't get it at all)

Answers

Answer: I’m not for sure but I think its 8 1/2

Step-by-step explanation:

For 7 sauces you would need 14 cups of corn I think

PLS HELP ASAP

Which statement is correct for Triangle ABC. and Triangle A prime B prime C prime.?

Triangle ABC is similar to triangle A prime B prime C prime. because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 3. and then rotating it about the origin by 180 degrees
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 4. and then rotating it about the origin by 90 degrees
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 4. and then rotating it about the origin by 180 degrees
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 6. and then rotating it about the origin by 90 degrees

Answers

Answer:

Step-by-step explanation:

A is the correct answer

WILL GIVE BRAINLIEST AND 70 POINT! PLEASE HELP ME!

Answers

Answer:

X and Y

and for ast two answers pls give me the options

Yea I need the options but the rest is x and y

You will need 120 feet of fencing to put all the way around a rectangular garden. The length of the garden is 40 feet. What is the width?

A. 20 feet

B. 40 feet

C. 4,800 feet

D. 80 feet

Answers

Answer:

A. 20 ft

Step-by-step explanation:

(120/2)-40=20

Answer:

a) 20 feet

Step-by-step explanation:

We know it's a rectangle so lengths are the same and widths are the same

If length is 40

That would mean 120-2(40) = 80

We know 2 widths of a rectange so 40/2 is 20

Therefore 20 feet.

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