Mathematics Middle School

need help 8th grade math

Answers

Answer 1

Answer:

60°

Step-by-step explanation:

outside angle = two opposite inside angles

10x - 45° = 4x + 3x

3x = 45°

x = 15°

m∠B = 4x

m∠B = 4(15°)

m∠B = 60°

Answer 2

The answer is 60 measures

Related Questions

Antonio is in a bowling league. His goal is to score an average of at least 100 points per game. His scores so far are 105,95,97,82, and 110. How many points can Antonio score in his next game to reach his goal? Show your work.

Answers

Answer:

111

Step-by-step explanation

If he's playing 6 games to get to his goal, he needs at least 600 points

If you add 105+95+97+82+110 you get 489

So you subtract 600 from 489 and you get 111

105+95+97+82+110=489
489/5=97.8
His current average would be 97.8 per game.
You want the next games number to add to 489 and equal at least 600 (because you are going to need to divide it be 6, the number of games,)
So 600-489=
111 points

1) If a card is drawn from a pack of 52 cards of which 26 are black (13 spades A, 2, 3,…, 10, J, Q, K); 13 are clovers); and 26 are red (13 hearts and 13 diamonds), find the probability of:

a) that the letter is a K.

b) that the card is red.

c) That the card is diamond.

Answers

King:
4/52 = 7.7%

Red:
26/52 = 50%

Diamond:
13/52 = 25%

this answer to your question is c

help me find this area of this triangle

Answers

Answer:

Step-by-step explanation:

Triangle's Area Formula

(Base*Height)/2

(9*12)/2

108/2

=54

Answer:

54 u²

Step-by-step explanation:

finding the area of a rectangle, we need the formula: A=1/2bh

A=1/5(9)(12)= 54

54 u²(since they dont give us any units)

i need help 8t math plz

Answers

Answer:

Step-by-step explanation:

The answer is 6328 !!!!b!bn!b!.):)/)):

Please help me on this.

Answers

A dozen is 12, and so 2.5 dozen is 30, so 30 muffins require 1.25 cups of flour, so it should be 5 cups of flour for 10 dozen muffins.

Its would be 5 cups of flour.
Explanation: The ratio is 2.5/1.25 and you’re trying to find 10/x First you divide 10 to 2.5 which equals 4, then use to the 4 and multiply 1.25 and you get 5. Aka x. I hope this explanation helped :))

What is the equation of the quadratic that models the data? 15pts!!!!

Answers

D.

Let, x= number of $2 increase in price and y= revenue.
So, we are given the data,
x y
1 1045
3 1105
5 1125
7 1105
9 1045
So, using the regression calculator, we get that,

The answer is B!!!!!!!!

Simplify/Solve: Lesson 33

(Also please do the numbers ex: 14e: {answer])

Answers

10) should be T= 13/4
You multiply both equations by 4 and the least common multiply of 4,2. Then 8 x 4 + 3 - 4t = 2 ( 5 x 2 +1 ) multiply 8 and 4 to get 32. Add 32 and 3 to get 35. Then you multiply 5 and 2 = 10 add 10 and 1 = 11 multiply 2 and 11 = 22 eventually ur equation should look like 35 - 4t =22 so you subtract 35 from 35 and 35 from 22 = -13 then you should have ur equation; -4t = -13 then you divide -4 by -4 = t so T = -13 /-4 but you simplify-13/-4 and switch the negative signs to positive ; 13/4

You can observe pic which i have kept

PLS HELP PLS THIS IS URGENT PLS I WILL GIVE CROWN PLUS 40 POINTS PLSS

A shelf has different sizes of bottles of laundry detergent. This line plot shows the number of cups of laundry detergent in each bottle. Jada buys one of the bottles of laundry detergent that has the fewest bottles on the shelf. She uses 1/8 cup in each load of laundry she does.

How many loads of laundry can Jada do with her bottle of laundry detergent?

Enter your answer in the box.

____loads

Answers

Answer:

2 / 3 loads

Step-by-step explanation:

From. The plot, we can conclude that, the detergent that has the most bottles is that with 5 ; the number of cups in the detergent with 5 bottles is 12 cups

Number of cups used for each load of laundry = 18 cups

The loads of laundry Eric can do is thus :

Number of cups of detergent / number of cups used for each load of laundry

= 12 / 18

= 2 / 3 loads

HELP AND QUICK
Which solid can be made from the above pattern?
A
a cube

B
a cone

C
a cylinder

D
a square pyramid

Answers

D a square pyramid
Beachside of the triangles and the square in the middle

Answer:

D or A

Step-by-step explanation:

i think but dont trust me i hope so

Draw a line representing the "rise" and a line representing the "run" of the line. State the slope of the line in simplest form. (PLEASE HELP!!!!!! THIS IS TIMED!!!!!! PLEASE HELP!!!!!!)

Answers

Answer:

1/4

Step-by-step explanation:

-7 - -9/4- -4

2/8 = 1/4

WILL GIVE BRAINLest!!!!

Answers

Answer:

C. -1/3

Step-by-step explanation:

Slope of line is y=-1/3x+4/3

hence the line parallel would be -1/3

Answer:

C. -1/3 is the slope to any line parallel to line q.

Step-by-step explanation:

Have a nice day!

(PLEASE HELP!!! THIS IS TIMED!! I WILL MARK THE BRAINIEST IF YOUR ANSWER IS CORRECT!!!)

Directions: Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y=3x-1

Step-by-step explanation:

Y=3/1 -1. Because -1 is where the y-int is and it’s going up by 3 over 1

Find the volume of the prism.

Answers

Answer:

210 is volume

Step-by-step explanation:

volume is equal to length times Width times Height

8 1/3 times 4 1/5 time 6

= 210

have a wonderful day!

The formula to be able to find the volume of a prism is V=Bh.
V= 210
Base= 8 1/3 times 4 1/5 after multiplying you multiple it by 6. And you should get 210

My last review question before the big test! Can anyone explain this one to me? It's percentages cri

Answers

Answer:

B. 5000

Step-by-step explanation:

To solve this I did 873x10.99 and got 9594.27

I did 52% of 9594.27 and got 4989.02 which means it'll be about 5000

The correct answer is B. Hope this helps

When Amelia started painting, the paint can had 7/8 gallon in it. She used 3/8 gallon. How much paint is left in the can? (I'll try to give brainliest)

Answers

4/8 is left in the can

Answer:

4/0 gallon

Step-by-step explanation:

PLS HELP 20 POINTS
what are the approximate dimensions for a cylinder that has a volume of 5000cm^3? show your work?

Answers

Answer:

Step-olayyby-step explanation:

Complete the table to show the actual distance of each path, in miles.

Answers

A= 4 1/4
B= 3
C=
4 1/2

Answer:

A) 4 miles

B) 3 miles

C) 4 1/2 miles

Ncjc pls help help help help help help help helperlorororl dhhdhdjdjdjdkdkdkxlxzllzllz

Answers

Well the only addition is that there should be an arrow pointing from the trout to the mayfly nymph. The first correction is that the arrow in between the trout and dragonfly nymph should be flipped because the dragonfly nymph gets eaten by the trout, not the other way around. The second correction is that since the dragonfly nymph eats the mayfly nymph, the arrow between them should also be flipped. Now you just need two explaining sentences:)

Write an equation in simplest form for:
y is x divided by 17 plus 17.

Answers

Answer:

y = x/17 + 17

Step-by-step explanation:

Y = (X/17) + 17

Hope this helps

4 x 3 + 2 x 9 - 40
PLEASE!!!

Answers

The answer is 86

Following PEMDAS, which is:

parentheses

exponents

multiplication

division

addition

subtraction

I found that the answer was 86

Answer:

-10.

Step-by-step explanation:

Step 1: Explain/define

This problem contains more than one operation. This means we should solve this using a special acronym known as PEMDAS.

P (Parenthesis)

E (Exponents)

M/D (Multiplication/division, whichever comes first)

A/S (Addition/subtraction, whichever comes first)

This is the correct sequence of steps when solving expressions with multiple operations.

PEMDAS can be remembered using the mnemonic "Please Excuse My Dear Aunt Sally."

------------------------------------------------------------

Step 2: Solve.

REMEMBER PEMDAS!

Expression given: 4 × 3 + 2 × 9 - 40

There are no parentheses.

There are no exponents.

There is multiplication, but no division.

4 × 3 + 2 × 9 - 40

12 + 18 - 40

There is addition and subtraction. Remember to solve whichever comes first.

12 + 18 - 40

30 - 40

30 - 40 = -10.

I, therefore, believe the answer to 4 × 3 + 2 × 9 - 40 is -10.

Please let me know if you have any further questions.

Hey yall this question is for the edge students, my adhd is getting the best of me so I have to ask. when you do a cumulative exam and if you get a bad grade do you have to retake it??

Answers

i’m not sure, but don’t worry it’ll be okay we can always talk and be friends

Answer:

I think you can

Step-by-step explanation:

i am pretty sure that you can if you want to but if you dont want to i dont think you have to

Draw a diagram of x + 2 and a separate diagram of 3x when x is 2.

Answers

Answer:

Gettysburg outsmarted undisciplined

Please answer!

If Shayla builds a sand castle with dimensions twice as large as the dimensions of Shelly's winning castle, will Shayla need twice as much sand? Provide and argument to justify your response.

pls dont forget to explain why

Answers

Answer:

I would say no

Step-by-step explanation:

I say no because Shayla's dimensions are twice the size does not mean that there is a need for double the amount of sand but I could be wrong.

Answer:

Explanation:

Textbook answer: She will need 8 times as much sand. In any of the volume formulas, if the dimensions are all doubled, the volume increases by a factor of 8.

My answer: double = 2. Cubed = ^3. 2^3 = 8

PLEASE HELP I CANNOT FAIL! (the question is the picture below!)

Answers

Answer:

The answer is A

Step-by-step explanation:

Nathan invests money in an account paying simple interest. He invests $180 and no money is added or removed from the investment. After one year, he has $196.20. What is the simple percent interest per year? PLSSSS HELP HURRY

Answers

I think this question is technically asking
196.20 is what percent of 180, if so it would be 109%

1/9 * 1/2 ^ 4 (as a fraction)

Answers

The correct answer is 1/144
The other persons answer is not correct

1/144 hope this helps

HELP ASAP!! I HAVE TO TURN THIS IN,

The high temperatures for Monday and Tuesday are graphed on the number line below. The high temperature on Wednesday is the least of the three days. Which inequality correctly compares Wednesday’s high temperature, w, with the temperatures graphed on the number line?

Answers

Answer:

-0.5

Step-by-step explanation:

-0.5 I’m not really sure Though

In the similar quadrilaterals below, what is the measure of ∠G?

218°
54.5°
98°
109°

Answers

Answer: your awnser would be 109

Step-by-step explanation: MARK ME AS BRAILIEST! PLS!!

Answer:

The answer is 109

Step-by-step explanation:

Its 109 cause I copied lol

help for brainliest plz

Answers

Answer:

1) C

2) 1st, 3rd and 4th.

3) [tex]7.625 * 10^3[/tex]

5) A

6) [tex]8.749*10^5[/tex]

7) B

1) C, for scientific notation you must have have a one-digit number for the base and the rest of the numbers would be on the decimal place. Also, and negative exponent makes the base number smaller rather than bigger
2) C and D
5) A
6) .0000932-.00000571= 0.00008749
7) 32000000/4000= 80000

The math project scores for two different classes are shown in the box plot below.
(the picture)

Which statement about Class A and Class B math project scores is NOT supported by the graph?

A) The range of scores for both classes is 3.
B) The interquartile range for Class A is greater than the interquartile range for Class B.
C) The interquartile range for Class B is 2.
D) The median score for Class B is 0.5 greater than the median score for Class A.

Answers

Answer:

Step-by-step explanation:

The bar for Class A is 1.5-3.5. 3-5 - 1.5 = 2 (interquartile range)

The bar for Class B is 2-3. 3-2 = 1 (interquartile range)

Range = 2-1 = 1

Because the range does not equal to 3, we automatically know that this statement is false. But for D, the line represents the median score for each class.

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