7a = 28 Is a=21 a solution?

yes or no

Answers

Answer 1
No, because 7 x 21 is 147.
Answer 2

Answer:

No

Step-by-step explanation:

No because if a = 21, then 7 * 21 = 147 and 147 is not 28.


Related Questions

Marco is interviewing classmates for his newspaper article. He needs to interview 30 people. Every interview takes Marco 7.2 minutes to complete. Last week Marco completed 40% of the interviews needed. How many people did Marco interview last week?

Answers

Answer:

12

Step-by-step explanation:

This is just looking for 40% of 30 people, so 30 * 0.4 should give you the answer, 12 people.

convert pounds to ounces complete the following table Its due tomorrow

Answers

Answer:

64, 80, 96, and 112.

Step-by-step explanation:

Well, one pound equals 16 onces so you can multiply the number of pounds by 16 to get the answer. I hope this helps! Have a great rest of your day!

y=3. (y + 5) + 3y = 2.

Answers

Answer:

45?????

Step-by-step explanation:

i think

give me a heart for trying

Find the equation parallel to y = -x - 5 and passing through (-3, -3)

Answers

Answer:

y = -x - 6

Step-by-step explanation:

If it's parallel, then it means that the slope will remain the same. The slope is

-1.

To find the y-intercept, you need to plug the coordinates into the equation,

y = -1x + b

-3 = -1(-3) + b

-3 = 3 +b

-6 = b

The equation is y = -x - 6

Plz help me i will give barinless im not lying plz help

Answers

Answer:

what do you need help with?

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

7 x 3/4 = 21/4 = 5 - 1/4 ft

An eighth grade class was divided into two groups to go to the state fair. The students in the first group bought 9 food tickets and 14 ride tickets for $66.50 total. The students in the second group bought 18 food tickets and 14 ride tickets for $98.00 total. What was the cost of each food ticket and each ride ticket.

Answers

Answer: HOW AM I SUPPOSED TO KNOW?!

Step-by-step explanation:

A rectangular prism measures 8 inches in width,12 inches in length and 4 inches in height.What is the surface area of the prism? Enter your answer In the box.​

Answers

Answer:

352

Step-by-step explanation:

A = 2(wl+hl+hw) = 2(8 · 12 + 4 · 12 + 4 · 8) = 352

Find the domain and range, and is it a function?

Answers

5) it is a function because each x value only has one y value. Domain: (-infinity,infinity) range: [0,infinity)
6) it is a function. Domain: (-infinity, infinity) Range: [3,3]
7) it is a function. Domain: (-infinity, infinity) range: (-infinity, infinity)
8) it is a function. Domain: [0, infinity) range: [0, infinity)

Please no links :) giving brainliest, try to answer as soon as you can :)

Answers

Answer:

102,9 cm^2

Step-by-step explanation:

First of all we can find the area of the two rectangles at the sides of the figure

A rectangle = length x width = 8 x 4 = 32 cm^2

the rectangles are two so:

32 x 2 = 64 cm^2

for the figure in the center we can proceed like this: we can initially assume that also it is a rectangle, so we have to find the length

length = 16-8 = 8 cm

A = 8^2 = 64 cm^2 (so we have discovered that is a square)

if we look we can see that there is also a semicircle that is not part of the figure. We have to find its area and subtract it to the area of the square

A semiciricle = (radius^2 π)/2

radius = 8/2 = 4 cm

A semicirlce = (4^2) π/2 = 25,13 cm^2

64 - 25,13 = 38,87 cm^2

At least we have to added up this value to the area of the two rectangles

total area = 38,87 + 64 = 102,87 = 102,9 cm^2

find the circumference of the circle ​

Answers

Answer:

72.22

Step-by-step explanation:

A scientist planted seeds in 4 sections of soil for an experiment. Not all of the
seeds grew into plants. After 20 days, the scientist counted the number of
plants in each of the 4 sections. The results are shown in the table.
• Use the data in the table to determine approximately how many plants
grew per square foot.
• Explain or show how you determined your approximation.
• Let y be the number of plants expected to grow in x square feet. Write an
equation the scientist could use to model the relationship between y and x.

Answers

Answer:

I think you would multiply 20 × 4 and the answer would be 80 that the scientist counted the number of plants in each 4 sections after 20 days.

The number of plants per square foot will be; 48.

Given that scientist planted seeds in 4 sections of soil for an experiment. Not all of the seeds grew into plants. After 20 days, the scientist counted the number of plants in each of the 4 sections.

What is addition?

The addition is one of the mathematical operations. The addition of two numbers results in the total amount of the combined value.

The number of plants per square foot:

= (25 × 13) + (100 × 38) + (125 × 47) + (150 × 62) / (25 + 100 + 125 + 150)

= (325 + 3800 + 5875 + 9300) / 400

= 48.25

Thus, it was illustrated by the number of plants and size of sections.

Thus, the number of plants per square foot will be 48.

To learn more about square foot refer to:

brainly.com/question/24657062

#SPJ2

Similar triangles have the same shape but a different what

Answers

Similar triangles have the same shape but I different size

Jaspar has a lemonade stand. One glass of lemonade has 4950 milligrams of sugar. One weekend, he sells 87 glasses of lemonade. How many grams of sugar does Jasper use that weekend?

Answers

Answer:430650

Step-by-step explanation: all you do is multiply 87 x 4950.

14, 11,8, 1, 23, 20, 17, 5, 19, 10, 12, 22

Answers

Answer:

I did not understand anything

Use the long division method to find the result when 4x^3+23x^2 + 21x + 30 is
divided by x +5.

Answers

Answer:

A polynomial is an algebraic expression made up of two or more terms subtracted, added, or multiplied. A polynomial can contain coefficients, variables, exponents, constants, and operators such as addition and subtraction.

It is also important to note that, a polynomial can’t have fractional or negative exponents. Examples of polynomials are; 3y2 + 2x + 5, x3 + 2 x 2 − 9 x – 4, 10 x 3 + 5 x + y, 4x2 – 5x + 7) etc. Like number, polynomials can undergo addition, subtraction, multiplication, and division.

We saw addition, subtraction, multiplication, and long division of polynomials previously.

hope it helps make brainlliest ty

1
Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What is
the probability of picking an N?

Answers

Given:

Jennifer writes the letters M-O-N-T-A-N-A on cards.

To find:

The probability of picking an N.

Solution:

We have,

Total number of cards = 7

Total number of cards with letter N = 2

Now, the probability of picking an N is:

[tex]\text{Probability}=\dfrac{\text{Number of cards with letter N}}{\text{Total number of cards}}[/tex]

[tex]\text{Probability}=\dfrac{2}{7}[/tex]

Therefore, the probability of picking an N is [tex]\dfrac{2}{7}[/tex].

is 2/10 equivalent to 20/100

Answers

Answer:

Yes it is

Step-by-step explanation:

You know it is equal because 2/10 is equal to .20 or .2

Answer:

I’m sure they are both equivalent to 1/5

Step-by-step explanation:

Marla has 1\2 of a pound of candy. She equally distributes the candy into 4 bags. How much candy will go in each bag?

Answers

Answer:

1/8 or 8

Step-by-step explanation:

help m.e please please

Answers

Answer:

(-4,-1)

Step-by-step explanation:

Answer:

(-4,-1)

Step-by-step Explanation: It is because the arrows stop at -4 and -1

PLS HELP ILL GIVE BRAINLIEST XD

Answers

Answer:

No i think

Step-by-step explanation:

Its going by 3, im pretty sure u cant get to 220.

Answer: No

Step-by-step explanation:

1. The pattern is +3 because

-4+3=-1

-1+3=2

2+3=5

5+3=8

2. To see if 220 is in the sequence and the starting point is -4 instead of 0, subtract 220-(-4)=224. Since 224/3 is 74.6666666667, which is not an integer, then 220 does not appear in the sequence.

Use the gcf to factor: 6e+24n​

Answers

Answer:

6(e+4n)

Step-by-step explanation:

(mark brainliest if you want, thx)

graph 3x+6y=18 In the box below, enter the y value when x = 2.

Answers

Answer:

y = 2

Step-by-step explanation:

3x + 6y = 18

3(2) + 6y = 18

6 + 6y = 18

Since 18 - 6 = 12, y will equal 2.

6 + 6(2) = 18

6 + 12 = 18

The coordinates to graph the equation would be (2, 2).

Hope it helps!

Factor each expression completely.
5x^2 + 10x

SHOW YOUR WORK!!!

Answers

5x^2+10x

factorise 5 and 10 first
then factorise the x

so 5x(x+2)
completed :))

hope this helped :)

Suppose while at a store, you ask for change for five dollars. You get in return exactly twenty-four coins, all of which are nickels and quarters. How many nickels and quarters did you receive?

Answers

Answer: 5 nickels and 19 quarters

Step-by-step explanation:

Let represent the number of nickels and let represent the number of quarters.

From the problem we can write these two equations:

+ = 24; (0.05) + (0.25) = 5.00

Isolate in the first equation: = 24 − .

Substitute 24 − for and solve for :

(24 − )(0.05) + (0.25) = 5.00

24(0.05) − (0.05) + (0.25) = 5.00

1.20 − 0.05 + 0.25 = 5.00

1.20 + 0.20 = 5.00

0.20 = 3.80

= 19

Use = 19 to find :

+ = 24; + 19 = 24; = 5

Answer: 5 nickels, 19 quarters

Hope this helps!

Answer:

19 quarters and 5 nickles

Step-by-step explanation:

19 * .25 = 4.75     .05 * 5 = .25     4.75+.25= 5

the minute hand on a grandfather clock is 8 inches long what is the circumference of the circle to the nearest tenth of an inch traveled by the minute hand in one hour​

Answers

Answer:

50.2 inches

Step-by-step explanation:

circumference =2pir

2(3.14)8

6.28(8)

50.24 inches roused to the tenth place so 20.2

Answer:

50.27 or 16pi

Step-by-step explanation:

C = 2πr = 2·π·8 ≈ 50.26548 or 16pi

please help i will help you

Answers

the point is located in the third quadrant! :))

what is 12 divided by 25358

Answers

0.0004732

12/ 25358

answer depends if you want to round it

help pls geometry volume

Answers

I believe it would be the first one

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

2:3

Step-by-step explanation:

You can divide 6:9 by 3

6/3=2

9/3=3

So, therefore the answer is 2:3.

Find the area of each sector. Round your answer to nearest tenth

Answers

Answer:

area of 150° segment = 188.5 km²

Step-by-step explanation:

area of full circle = πr² = (3.14)(12²) = 452.16 km²

area of segment = (150°/360°)(452.16) = 188.5 km²

the area of each sector is C

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