Please Help 7th Grade Math

Answers

Answer 1

The circle area formula is A=pi r^2. I am assuming those numbers represent diameter, and diameter is radius x 2. 6/2=3, and pi 3^2= 28.27433388. Divide this by 2 and the area of your half circle is 14.13716694. On the other half circle, 5/2= 2.5. pi times 2.5^2 is 19.63495408, divided by two is 9.817477042. Hope it helps!

Answer 2

I hate math it sucks

Related Questions

Correct answer 20 points + brainliest

Polygons ABDC and A′B′D′C′ are shown on the coordinate grid:

What set of transformations is performed on ABDC to form A′B′D′C′?

options for answers:

A.
A 90-degree counterclockwise rotation about the origin followed by a translation 1 unit to the left

B.
A translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin

C.
A 270-degree counterclockwise rotation about the origin followed by a translation 1 unit to the left

D.
A translation 1 unit to the left followed by a 270-degree counterclockwise rotation about the origin

Answers

I think the answer is A

Find the quotient of 6x^3-18x-12x/-6x

Answers

Answer:

Step-by-step explanation:

$\frac{6x^{3}-18x^{2}-12x}{-6x}=\frac{6*x^{3}-6*3*x^{2}-6*2x}{-6x}\\\\=\frac{6x*[x^{2}-3x^{1}-2]}{-6x}\\\\=\frac{x^{2}-3x-2}{-1}\\\\\\=-x^{2}+3x+2$

help needed please! ♡

Solve this inequality. Show your work.

7 + 2x > 42 − 3x

Answers

X>7 because x is greater then the 7 in the problem.

HELP ASAP HELP ASAP MUST BE RIGHT NO MATTER WHAT

Answers

Answer:

8/15 or .53

Step-by-step explanation:

you have to times the 6 to both sides to get ride of it then u are left with 15s=8 then u divide 15 to 8

Answer:

8/15 or .53

Step-by-step explanation:

Use what you know about triangles to classify this triangle.

Answers

Answer:

equiangular triangle

Step-by-step explanation:

hope this helps

Help please!

For the figures below, assume they are made of semicircles, quarter circles, and squares. For each shape, find the area and perimeter. Give your answer as a completely simplified exact value in terms of π (no approximations).

Answers

Answer:

Area of triangle: 18

Area of semicircle: (9pi)/2

perimeter of triangle: 20.49

perimeter of semicircle: 3pi+6

perimeter of whole thing: 23.91/ 6+8.49+3pi

Step-by-step explanation:

triangle area: 1/2bh, 1/2*6*6=18

Area of circle: pir^2, 3^2*pi, 9pi, semicircle means half, 9pi/2

Which equation illustrates the commutative property of addition?
12 + 6 + 15 = 12 + 15 + 6
12 + 6 + 15 = 12 + (6 + 15)
12 + 6 + 15 = 18 + 15
12 + 6 + 15 = 12 + 6 + 15

Answers

12+6+15=12+6+15 is the correct answer

Answer:

12 + 6 + 15 = 12 + 15 + 6

Hope this helps :D

The results of a survey show that 40% of 300 students chose conserving natural resources as the top priority for their generation. How many students chose conserving natural resources. Make a model to find the answer.

Answers

Answer:

120

Step-by-step explanation:

multiply the first number together

4 x3 = 12 plus a 0 because it’s 300

Answer:

The answer is 120

Sanderson is having trouble with his assignment. His shown work is as follows:− 8/9 div 9/8 = − 89 × 98 = − 72/72 = −1 v\However, his answer does not match the answer that his teacher gives him.

Complete the description of Sanderson's mistake. Find the correct answer.

He forgot to multiply by the
(select)
, and instead just multiplied by the
(select)
that was in the denominator. The answer should look like this:
− 8/9 div 9/8 = - 8/9 × 8/9 =

need this for final exams

Answers

Answer:

He forgot to flip the second fraction.

Step-by-step explanation:

He has:

−8/9 ÷ 9/8 = −8/9 × 9/8 = −72/72 = −1

He made a mistake. When you change a division to a multiplication, you must use the reciprocal of the second fraction. You have to flipt the second fraction. He did not flip it.

This is correct:

−8/9 ÷ 9/8 = −8/9 × 8/9 = −64/81

He just didn’t flip the second fraction, he had to use the reciprocal

Donna is a pacer in a marathon. She finishes 26.2 miles in 3 hours 45 minutes (3.75 hours) while running at a constant speed. What is Donna’s speed in miles per hour to the nearest whole number?

Answers

Answer:

7 miles per hour

Step-by-step explanation:

To obtain mph, we simply divide distance by time. So in this case we get:

26.2 miles / 3.75 hours = 6.99 miles per hour = 7 mph.

Donna’s speed in miles per hour to the nearest whole number is 7 miles/hr.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, Donna is a pacer in a marathon. She finishes 26.2 miles in 3.75 hours.

Therefore her speed in miles per hour can be obtained if we divide the total no. of miles she ran by the total time it took her which is,

= (26.2/3.75).

= 6.98 miles/hr.

Rounded to the nearest whole number is 7 miles/hr.

learn more about the unitary method here :

https://brainly.com/question/28276953

#SPJ2

Which scenario can be modeled by the linear function
y = -15x + 500?

A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.

B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.

C. A carpet cleaning service charges $500 plus an additional $15 for every hour.

D. A membership fee for a movie streaming service is free, but each rental costs $15.

Answers

I think the answer is C

The answer is a because it is able to be modeled unlike the rest

Find the least common multiple LCM of 8 and 6 ?

Please help ASAP

Answers

Answer:

Step-by-step explanation:

8 * 3 = 24

6 * 4 = 24

Step 1: List a few multiples of 6 (6, 12, 18, 24, 30, 36, 42, . . . ) and 8 (8, 16, 24, 32, . . . . )

Step 2: The common multiples from the multiples of 6 and 8 are 24, 48, . . .

Step 3: The smallest common multiple of 6 and 8 is 24.

The least common multiple of 6 and 8 = 24.

Answer 1 question correctly for 50 points!

Answers

Answer:

6 7 8 9 10

Step-by-step explanation:

6,7,8,9,10

Explanation:

The circumference of a circular park is approximately 18 feet. What is the approximate area inside the circular park?

Answers

Answer:

25.685 square feet.

Step-by-step explanation:

Circumference = 2 * π * radius

From this, we can derive the formula for the radius:

radius = Circumference / (2 * π)

Let's substitute the value of the circumference and calculate the approximate radius:

radius = 18 / (2 * π)

radius ≈ 18 / (2 * 3.14159)

radius ≈ 2.865 feet

Now that we have the approximate radius, we can calculate the area:

Area ≈ π * radius²

Area ≈ 3.14159 * (2.865)²

Area ≈ 3.14159 * 8.193225

Area ≈ 25.685 square feet

Therefore, the approximate area inside the circular park is approximately 25.685 square feet.

We know that the circumference of a circle is given by:

C = 2πr

where C is the circumference and r is the radius of the circle.

In this case, we are given that the circumference is approximately 18 feet, so we can set up the following equation:

18 = 2πr

Solving for r, we get:

r = 9/π ≈ 2.864 feet

Now we can use the formula for the area of a circle:

A = πr^2

Substituting the value we found for r, we get:

A = π(2.864 ft)^2 ≈ 25.85 ft^2

Therefore, the approximate area inside the circular park is approximately 25.85 square feet.

HELP?!!!! ITS A A AND B QUESTION

Answers

Answer:

A: 80 and B: 5.5

Step-by-step explanation:

For A, just multiply 20 and 4 and which you would get 80 miles. And for B, if 1 inch is equal to 20 miles, you can divide 110 and 20 but the answer will be 5.5 rather than 5.

I think this is right but if you can, try and see if it’s correct later.

Answer:

The person who answered first is correct.

Step-by-step explanation:

If xx and y vary directly and y is 21 when x is 7, find y when x is 5

Answers

Answer:

y = 15

Step-by-step explanation:

We need to solve for k

y = x

21 = 7k Divide both sides by 7 to solve for k

3 = k

y = xk

y = 5(3)

y = 15

Answer: y = 15

Step-by-step explanation:

I need help with this question, I'm not very good at math and all help is appreciated!

Answers

Answer:

Step-by-step explanation:

We can solve for H by isolating it on one side of the equation, as follows:

J/H - I/H = G

Taking H as the common denominator:

(J - I)/H = G

Multiplying both sides by H:

J - I = GH

Adding I to both sides:

J = GH + I

Dividing both sides by G:

H = (J - I)/G

So the answer is

(A)

H = (J - I)/G.

Answer: A

Step-by-step explanation:

$\frac{J}{H} = G + \frac{I}{H}$ >Since you are solving for H bring I/H to the other side

by subtracting I/H from both sides

$\frac{J}{H}- \frac{I}{H} = G$ >There is a common denominator so you can

combine the fractions

$\frac{J-I}{H} = G$ >Multiply both sides by H or cross multiply whichever

way your mind things about how to get H on top

$J-I = G(H)$ >Divide both sides by G

$\frac{J-I}{G} = H$ >Answer is A

I know this question is not about math or science but my friends are saying the Leonardo DiCaprio when he was young is hotter than Zac Efron now and when he was young. I need y’alls opinions.
Who is hotter, young Leonardo DiCaprio or 35 year old Zac Efron? My pick is Zac Efron but I want some opinions.

Answers

Answer:

it's Zac Efron for sure, Leonardo DiCaprio is just not the same...

young leonardo for sure

There are currently 6,210 fish in a lake. If the number of fish in the lake increased by 15 percent during the last year and 20 percent during the year before that, how many more fish are in the lake currently than in the last two years ago?

Answers

I’m pretty sure the answer should be 1,710 if not i’m sorry

Answer:

1710 fish

Step-by-step explanation:

Let the number of fish in the lake last year be 'x'

The equation becomes-
x + 15x/100=6210 (This is because 15% of x is added in x to become
6210... hope you understand)

x + 15x/100 = 6210
115x/100 = 6210
23x/20 = 6210
x = 6210 * 20/23
x = 270 * 20
x = 5400

Therefore- The number of fish last year = 5400

Now, let the number of fish in the lake 2 years ago be 'y'

The equation becomes-
y + 20y/100 = 5400 (Same logic as last time)

y + 20y/100 = 5400
120y/100 = 5400
24y/20 = 5400
6y/5 = 5400
y = 5400 * 5/6
y = 900 * 5
y = 4500

Therefore- Fish in the lake two years ago = 4500 fish

Difference between current and two years ago = 6210-4500
= 1710 fish

Hope you understood the answer and I hope it helps you :)

If a number and a variable are together with no sign between them, what operation does that show?

Answers

Answer:

Multiplication

Step-by-step explanation:

If you were to solve 8x x x, you wouldn't know what that means. So, normal people place variables and numbers together to represent multiplication.

WILL MARK BRAINLIEST

Estimate the area of the parallelogram.

A) 60 sq. units

B) 68 sq. units

C) 72 sq. units

D) 84 sq. units

Answers

I’m pretty sure it’s 72 sq. Units

Let’s say a town has a population of 34,567 people in 2001. And the population is decreasing by 2.2%. What is the population going to be in 2018?

Answers

The answer you are looking for is 33807

Answer:

y:=33806.526

y=33807.(Rounded off)

Step-by-step explanation:

y=(34567(1−0.022))

Solve for y

y=50016903263=33806500263=33806.526

Steps for Solving Linear Equation

y=(34567(1−0.022))

Subtract 0.022 from 1 to get 0.978.

y=(34567×0.978)1

Multiply 34567 and 0.978 to get 33806.526.

y=33806.5261

Calculate 33806.526 to the power of 1 and get 33806.526.

y=33806.526

Assign y

y:=33806.526

y=33807.

I need help pls it’s hard to me

Answers

Answer:

6.3

Step-by-step explanation:

count your way qlong the graph along the bottom and up ,,,, along the cirador and up the stairs

6.3 is the answer !! hope this helps

I don't understand how to do this please explain how to. Step by step, I keep getting it wrong and I am confused.

Answers

Answer: The surface area is 21,274.4 square feet.

Step-by-step explanation:

The total surface area is 4 (0.5bh). Although you would multiply it by 4 because there 4 triangular faces, b is the base & h is the height. It’d change to A = 4(0.5) (116 ft) (91.7 ft) so your answer ends up as A = 21274.4 square feet.

Solve the system. y = -x + 3 and y = 2x
the solution is (__,__).
Explain your choice of method.

Answers

Answer: (1, 2)

which means

x = 1

y = 2

Step-by-step explanation:

y = -x + 3

y = 2x

Because both equations are set equal to y, they can be set equal to each other. The equations are ready to go to use Substitution method.

Substitute.

-x + 3 = 2x

Add x to both sides.

3 = 3x

Divide by 3.

3/3 = x

1 = x

We can put the 1 in for x in either equation.

y = 2x

y = 2(1)

y = 2

Putting x for 1 into the other equation is a good check.

y = -x + 3

y = -1 + 3

y = 2

So the x and y that work in both of these equations is:

x = 1 and y = 2

The form that was asked for was ( , ).

So the answer is

(1, 2).

Answer: 1, 2

Step-by-step explanation:

A _____ is a ratio comparing quantities measured in different units.

• A unit rate is a rate that compares a quantity to exactly one ______ of another quantity.

• Unit rates can be used to make rate _____ consisting of equivalent ratios (fractions).

• A _____ table can be used to solve a problem. Find a missing value in a ratio table by:

• using a pattern of ____ each time.

• multiplying.

• writing an ____ ratio.

Answers

Answer:

1. Rate

2. unit

3. not sure what this one is sadly

4. ratio

5. dividing

6. equavilent

1. Rate 2. unit 3. not sure what this one is sadly 4. ratio 5. dividing 6. equavilent

Which statement compares the fractions two fourths and five twelfths correctly?

two fourths is less than five twelfths
two fourths is greater than five twelfths
five twelfths is equal to two fourths
five twelfths is greater than two fourths

Answers

Answer:

B. two fourths is greater than five twelfths

Step-by-step explanation:

B
2/4 is greater than 5/12

I like to ask myself this question: would i rather have 1/2 of a pizza or 5/12 of a pizza? that’s how you know which one is greater

math question someone pls explain how to answer it I am stuck

Answers

192

324

this is the answer

Answer:

A = 324m²

Step-by-step explanation:

Formula for finding the surface area of a rectangular prism:

2(wl + hl + hw)

First, let's find out which one of the measurements is the height, length, or width.

6m = length

16m = width

3m = height

Next, we calculate the surface area. We have to do the formula one by one too.

2(wl + hl + hw)

2(16x6 + 3x6 + 3x16)

16 x 6 = 96

3 x 6 = 18

3 x 16 = 48

Now, we add those together.

96 + 18 + 48 = 162

Lastly, multiply by 2.

162 x 2 = 324

Therefore, A = 324m²

Find the area of the square. 4 9cm

Answers

Answer:

2401 cm

Step-by-step explanation:

Area of square = a^2

a = side of square

a = 49cm

Hence, area of square = 49^2

= 2401cm

49 x 49 = 2,401 cm^2

PLEASE HELP ASAP WILL MARK BRAINLIEST!!

A donut shop wanted to determine the best price to sell its donuts. The manager of the shop gathered data from several donut shops in the city for the total cost, y, for different amounts of donuts, x. He created the following scatter plot with a line of fit. scatter plot titled donut pricing with the x axis labeled number of donuts and the y axis labeled total cost in dollars, with points at 1 comma 1, 2 comma 2 and a half, 5 comma 3, 6 comma 4 and a half, 3 comma 2, 7 comma 5, 4 comma 2, 8 comma 4 and a half, 12 comma 7, 10 comma 6, 9 comma 6, and 8 comma 5 and a half, with a line passing through the coordinates 1 comma 1 and 6 comma 4 Find the slope of the line of fit and explain its meaning for the real-world situation.

Answers

Answer: The slope is 3/5, which means for each additional donut sold, the shop is predicted to earn $0.60.

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