Mathematics Middle School

Explain how to calculate these mentally

a. 15 is what percentage of 30
b. 3 is what percentage of 12
c. 6 is what percentage of 10

Answers

Answer 1
A. 15 is 50% of 30
B. 3 is 25% of 12
C. 6 is 60% of 10

Related Questions

what is the solution

Answers

Answer:

1+1=a a=solution

Step-by-step explanation:

The solution is 1+1=a

Adam’s car traveled 465.3 miles on 16.5 gallons of gas. Which equation can be used to determine the average number of miles that the car traveled on each gallon of gas?
16.5x = 465.3
StartFraction x over 16.5 EndFraction = 465.3
465.3 x = 16.5
StartFraction x over 265.3 EndFraction = 16.5

Answers

Answer:

it A

Step-by-step explanation:

$800 at 3.8% interest for 6 months
What is the interest?

What is the new balance?

Answers

Use the equation I/PT = R I is the interest P is the money before investment and T is the time
Multiply then divide

Sheldon harvests the strawberries and tomatoes in his garden.

Sheldon also picks tomatoes from his garden. He picked 5310 kg, but 1.5 kg were rotten and had to be thrown away. How many kilograms of tomatoes were not rotten? Write an equation that shows how you reached your answer.

Answers

Answer:

5310-1.5=x

x=5308.5

Step-by-step explanation:

A cheesecake recipe says, “Mix 12 oz of cream cheese with 15 oz of sugar.”



How many ounces of cream cheese are there for every ounce of sugar?

Answers

Answer:

4/5 of cream cheese per ounce of sugar

Step-by-step explanation:

If you turn 12 and 15 to a fraction it would be 12/15 so from there we can simplify to 4/5 and can’t simplify it anymore thus giving the answer 4/5 or 4/5 ounce of cream cheese per 1 ounce of sugar. Hope this helps!

The point (-8,-7) is reflected across the x-axis. What quadrant is the new point located in?

Answers

Answer- (-8,7) if you reflect over the x axis the c value stays the same and the y value flips
Quadrant 3 on the y axis

Find the value of c in the triangle shown below.

Answers

Answer:

x=6.40312 rounded to 6.4

Step-by-step explanation:

Answer:

The answer is going to be 6.4 Hope it helped

Step-by-step explanation

simplify - 2/3x + 6 + 1/5y -1/4x -3/10 y +3

Answers

Answer:

5x/12 - y/10 +9

-11/12x + 46/5 - 3/10y

me need help whit this

Answers

Answer:

it's is your answer to this question 1000 ÷ 74 = 74000

It’s 74000 hopefully this helps you

Solve the following proportion for v.
7/3 = v/8
Round your answer to the nearest tenth.

Answers

Answer:

18.6, 56/3, 18 2/3

Step-by-step explanation:

cross multiply

swap the side

divide both side

Answer:
18.6 or 18 2/3

Please help! Geometry:

Answers

Answer:

x=29

Step-by-step explanation:

the line in the middle of the triangle is at a right angle, so each side of it must equal 90 degrees, so then 90=3x+3, 90-3=3x then you simply, 87=3x which equals x=29.

The answer to your question is x=29

Order these three values from least to greatest. Explain or show your reasoning.
65% of 80
82% of 50
170% of 30


(Will give brainliest)

Answers

Answer: 82% of 50, 170% of 30, 65% of 80.

Step-by-step explanation: By converting the percentages to decimals (Shift the decimal point to the left twice for the percentages) and then multiplying them by the desired number, you will find the percentage of said number. In this case the numbers are 41, 51, 52.

Answer:

82% out of 50

65% out of 80

170% out of 30

Step-by-step explanation:

that's the correct answer

It snowed 17 feet 8 inches in Michigan. How many inches is that?!?!?

Answers

That’s 212 inches. 17ft=204in + 8in
212 inches is the answer

pleasee help asap i dont have much time worth 10 points

Answers

the answer is E
step by step explanation:
the answer is E. to get it you subtract the exponents and go letter by letter. you got this keep it up!

guys need help with this question NOTE: the answer is a mixed number not a whole number.

Answers

Answer:

5 2/5

Step-by-step explanation:

i need BIG help with these questions.

Answers

Answer:900

Step-by-step explanation:

2100/1 X 3/7 = 2100X3/7 = 6300/7 = 900

In the figure, a∥e, m∥n, and m∠3 = 112°. What is the m∠1? Enter your answer in the box. ° Lines n and m (reading from top to bottom) are parallel to each other, and lines a and e are parallel to each other. The two pairs of lines intersect each other. Lines m and n start at top left and drop to the bottom right. Lines a and e rise from left to right. Only six of the sixteen angles created are labelled. Angle one is the top angle made by lines n and a. Angle two is the bottom angle. Angle three is the bottom angle made by lines m and a. Angle four is the top angle made by lines n and e. Angle five is the left angle. Angle six is the bottom angle made by lines m and e.

Answers

<1 = <2

vertical angles (congruent)

<3 = <2

corresponding angles (congruent)

so that: <1 = <2 = <3 = 112 degree

I hoped i helped! Pls give brainly if this helped :D

Have a amazing day!

-Yumi

Answer:

112 degrees

Step-by-step explanation:

i took the test :p

why would a prism beat a sphere in a competition?
A.GO FOR THE CUBE
B.NO ONE HAS THE EDGE
C.IT CAN NOT WINN

Answers

Answer:

B.

Step-by-step explanation:

What does x=

what is the statement true or false.

Answers

Answer: X= -14

Step-by-step explanation:

2x-5x-6=36

3x-6=36

36+6 =42

-3x=42

42÷-3

X= -14

It’s X=-14 hopefully this helps you:)

Write the equation of the line in slope-intercept form.

The equation of the line in slope-intercept form is

Answers

Answer:

y = 70x + 20

Step-by-step explanation:

Let me know if I am right

Y=70x=20 let me know if it is right

help me please :) fvbyhbunybftfr ✋

Answers

It’s C.Because the first 180 is the original use age and the + 180*0.4 will be the next increase

Answer:

c

Step-by-step explanation:

because 0.4 is 40% and the equation says 180+(0.4)(180) which is basically just "180 bags + 40% of 180"

I’m confused can someone explain?

Answers

Answer:

It is 150 percent

Step-by-step explanation:

You can find this value by dividing the numerator by the denominator, summing this value to the integer part and multiplying the result by 100%, so:

1 1/2 in percent = (1 + 1/2) × 100% =

(1 + 0.5) × 100% = 1.5 × 100% = 150%

Hope this helps! Sorry if I'm wrong.

Answer:

150%

Step-by-step explanation:

112=1+12

i know that

12

is the same as

1÷2

Therefore:

112=1+(1÷2)

Then using

Long Division for 1 divided by 2

we have

=1+0.5=1.5

Converting our number to a percentage:

1.5×100

=150%

Enter the proper order needed to unlock PATCH the Pirate's treasure chest.

Here are some hints to help you.

The first number of your order needs to be placed on top.
Placing the numbers in order from least to greatest would be incorrect.
Do you notice anything about the variables PATCH used to create his equations?
If one of your previous answers in the project do not match the numbers below, you need to go back and re-solve that problem!

A
2

B
5

C
6

D
3

E
9

Answers

Answer:

ecbda

Step-by-step explanation:

WILL GIVE BRAINLIEST!!! A fruit stand sells 3 pounds of tomatoes for $2.00. Graph the relationship and use the graph to estimate the cost of 6 pounds of tomatoes.

Answers

Answer:

4.00

Step-by-step explanation:

0,0

3,2

6,4

3;2
6;4
so the estimated cost for 6 pounds would be $4

Find the circumference of a circle with a radius of 6 inches. Use 3.14 for pi.

Answers

Answer:

37.7in

Step-by-step explanation:

Took the test

The surface area of the box is 576 square units
the dimensions are 6 in tall 12 in wide and 12 in long
what is the surface area if scaled up by a factor of 10

Answers

Answer:

thats hard ill think

Step-by-step explanation:

Abir walks four twelfths of a mile to school. Nadia walks two twelfths of a mile to school. How much farther does Abir walk than Nadia?

Question 6 options:

eight twelfths of a mile


six twelfths of a mile


four twelfths of a mile


two twelfths of a mile

Answers

Answer:

Step-by-step explanation:

four twelfths minus two twelfths equals two twelfths

Answer:

b

Step-by-step explanation:

need this done by today! 2-2-2021

Answers

Answer:

D

Step-by-step explanation:

Mark me as brainliest

Answer:

D

Step-by-step explanation:

took the test

I need help with this question attached

Answers

Answer:

17 feet

Step-by-step explanation:

The structure is shaped as a right triangle.

Use the Pythagorean theorem to solve for 'c' or the hypotenuse.

[tex]a^2+b^2=c^2\\\\8^2+15^2=c^2\\\\64+225=c^2\\\\289=c^2\\\\\sqrt{289} =\sqrt{c^2}\\\\17, -17 = c\\\\\text{Disregard negative value.}\\\\\boxed{17=c}[/tex]

The hypotenuse should be 17 feet.

Hope this helps!

Answer: 17 ft.

Step-by-step explanation: By using the pythagorean theorem (a^2 + b^2 = c^2) for right triangles, you should be left with the given equation after plugging in the values of the legs:

8^2 + 15^2 = c^2

Now simplify the squares

64 + 225 = 289 (c^2)

Now to find the exact value of the hypotenuse (c), square root the value of c^2.

√289 = 17

The hypotenuse of the triangles is 17 ft.

Hurry I’m being timed!!!!

Answers

Answer:

-50

Step-by-step explanation:

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