Mathematics Middle School

PLEASE HELP Consider the equation.
28 + 21 = 7(4 +? )
Enter the unknown number that makes the equation true.

Answers

Answer 1

Answer: 3

Step-by-step explanation:

28 + 21 = 49, so we have 49 = 7(4+?)

49/7  = 7

7 - 4 = 3

Hope this helps!

Answer 2
The missing number is 7

Related Questions

What is the surface area of the square pyramid?

Answers

Answer: 417.24

[tex]6.1x9x7.6=417.24[/tex]

Step-by-step explanation:

The answer will be 417.24

the date of month of june is selected then a letter from the word Superstar is chosen. What is the probability of getting multiple of 8 then S?

Answers

Answer:  he possible dates in the month of June a numbers from 1 to 30. Of those 30 numbers, the multiples of 8 are: 8, 16, 24. There are 3 multiples of 8 out of 30 possible numbers. The word SUPERSTAR has 9 letters.

Step-by-step explanation:

Amanda completes 18 assignments in 3 days. At that rate, how many assignments would she complete in 7 days?

Answers

Answer: 42

Step-by-step explanation:

Answer:

42

Step-by-step explanation:

6 a day for 7 days

Jessie's favorite snack mix recipe calls for 7 cups of cereal, 3 cups of peanuts, and 2 cups of raisins. What is the ratio of peanuts to the entire snack mix?

Answers

Answer:

1/4

Step-by-step explanation:

total = 7 cups + 3 cups + 2 cups = 12 cups

3 cups peanuts to 12 cups total

ratio = 3/12 = 1/4

Answer: 1/4

What is the mean for the set of data?

Answers

your answer is 3.3! add all the numbers together and divide by the amount of data
3.3, add all the numbers then divide I think

A floor plan of ​'s cheryl´s bedroom and closet is shown. The height of the bedroom is 7 feet. The height of the closet is 6 feet. What is the total volume of the bedroom and the​ closet? . Does it make sense for to find the combined area of the bedroom floor and closet floor before finding the total​ volume? Explain your thinking.

Answers

Answer:

The total volume of the bedroom and closet is 42  feet or sq2

No, it doesn't make sense to find the bedroom floor and closet floor area combined because this is abt the height and volume, not the flooring plan (area)

Step-by-step explanation:

You multiple 7*6 to get the 42 answer

There are 5 sixth grade classes at Ditto Elementary. The number of students in each class is shown below.



22, 18, 24, 19, 22



What is the median number of students in these classes?

Answers

22 to find the median you must put all the numbers from least to greatest and then find the middle number and that is the median

Answer:

22

Step-by-step explanation:

Put them in order from least to greatest

18,19,22,22,24

Then cross one out from each side

19,22,22

Then cross one out from each side again

So you're left with 22

Hope this helps.

Brainliest would be appreciated

NEED WITHIN 50MIUTES IF NOT ANSWERED IN 50 MINUTES THEN I WILL NOT NEED ANSWER ANYMORE!
For each situation below, identify the dependent variable and independent variable.

Answers

Answer:

Part A, the tickets sold depends on the temperature

Part B, the monthly payments depends on the age of the person

Part A, tickets are the dependent variable, the temperature is the independent

Part B, the monthly payments are the dependent variable, the age of the person is the independent variable

I need help this is needed by tomorrow morning :)

Answers

I think it’s 1/48 :)
the answer is 1/50 cm

Plz help meeeee plzz

Answers

Answer:

I'm not sure but you can print 13 posters in 1 minute

A rancher’s herd of 250 sheep grazes over a 40-acre pasture. He would like to find out how many sheep are grazing on each acre of the pasture at any given time, so he has some images of the pasture taken by the state department of agriculture’s aerial photography division. Here are three samples of the images. Sample 1 4 Sample 2 1 Sample 3 9 What can the rancher conclude from these samples about how many sheep graze on each acre of the 40-acre pasture?

Answers

Answer:

Step-by-step explanation:

Based on the samples provided, the rancher can make some assumptions about the number of sheep grazing on each acre of the pasture.

Sample 1 shows 4 sheep grazing in an area of the pasture, which suggests that there may be approximately 10 sheep per acre (since 250 sheep divided by 40 acres equals 6.25 sheep per acre, and 4 is close to 6.25 divided by 0.6).

Sample 2 shows only 1 sheep grazing in an area of the pasture, which may indicate that some areas of the pasture are less densely populated with sheep than others.

Sample 3 shows 9 sheep grazing in an area of the pasture, which could suggest that some areas of the pasture are more densely populated with sheep than others.

Overall, based on these samples, the rancher could conclude that the number of sheep per acre varies across the 40-acre pasture, and that there may be some areas with higher or lower densities of sheep. However, it's important to note that these conclusions are based on a very small sample size and may not be representative of the entire pasture. Further analysis, such as additional aerial photos or on-the-ground observations, may be needed to get a more accurate picture of sheep density across the entire pasture.

WILL GIVE BRAINLIEST
Points Q and R on the number line below
each represent a real number. Which of the
following numbers is located between
points Q and R on the number line?
Q R
H
HT
3.8
3.9
4.0
A. 3.84
B. 3.88
C. 3.94
D. 3.98

Answers

Answer:

it is C

Step-by-step explanation:

because i had this problem and i got it right

Answer should be 3.88

BRAINLIEST PLLLLLLLZZZZZZZ

Answers

The answer would be 3

Can any1 answer this?If u can i get it right i put brainliest :)

Answers

the first one is the right one i believe

a wildlife manager determines that the function y=200x1.07* represents the deer population at a state park x years after the population is first counted. what is the population after 12 years? what is the initial population? what is the percentage rate? complete the table below.

Answers

Answer:

Table:

0,200

4, 262

8,344

12, 450

Population after 12 years is 450 deer

Initial population is 200 deer.

Step-by-step explanation:

You take the x in the table and plug it in as an exponent so you will need a calculator or multiple the 1.07 by that many times so 1.07 12 times multipled by itself. and the initial is 0 years so anything to the exponent of 0 is 1 so that show i got 200 for the x=0

HELP FAST


Which is a simplified form of the expression -4(n + 1) – (n + 2)?
A. 2n + 3
B. -3n – 2
C. -4n – 5
D. -5n – 6

Answers

-4(n+1)-(n+2)
(-4n-4) - (n-2)
-3n-2

Answer:

Hi! The answer to your question is D. -5n-6

Step-by-step explanation:

☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

A pair of jeans cost $39.99. If you have a coupon for 25% off, how much will the jeans cost before tax?
answer choices
$20.00
$30.00
$34.00
$37.00

Answers

Answer:

The closest answer is $30.00, the original answer is $29.99

Answer:

$30.00

Step-by-step explanation:

Find what 25% of $39.99 is

The answer is $9.99

Then Subtract $9.99 from $39.99

Which statement about the picture below is true

For a polygon with 10 sides, which equation below represents the sum of the interior angles in the polygon?

sum = (360)(8) = 2880°
sum = (360)(10) = 3600°
sum = (180)(8) = 1440°
sum = (180)(10) = 1800°

Answers

Correct answer is:

1800°
the correct answer is 1440.

The equation to find the sum of interior angles in a polygon is s = 180(n-2), n being the amount of sides and s being the sum. To solve you would do s = 180(10-2), s = 180(8), and s = 1440. hopefully that makes sense haha. use the equation s=180(n-2) :))

5. Select the expression that is equivalent to: V + V + V + V.

Answers

Answer: B. 4V

Step-by-step explanation: You multiply the Vs by 4 due to how many there are.

Answer:

4V

Step-by-step explanation:

If you put x+x+x+x into a calculator, then you get a line that is equivalent to 4x. Other than that, I can't really explain that any more.

Hope that this helps!

You receive a discount on each movie that you buy. The original price of each movie is x dollars. You buy 6 movies for a total of (6x-12) dollars. Find the amount of the discount for every movie you buy.
$2
$3
$6
$(x-2)

Answers

Answer:

6(X-2) so the last one

Step-by-step explanation:

Answer:

up top

Step-by-step explanation:

What is the supplement of 37 degrees?
a.53
b.22
c.147
d.143

Answers

Answer: 143

Explanation: supplementary angles add up to 180 meaning 37 + _ would need to equal 180. The blank number would be 143 since 143 + 37 = 180. Hope this helps!!!
the equation would be 37+x=180, but the answer is 143! :)

sylvia is saving up to buy a new phone. so far she has saved $45. she needs at least $360 to buy the phone and some accessories. she wants to buy the phone in 15 weeks write an inequality to how much money sylvia must save each week.

Answers

Answer: she need 315 more to buy the phone hope this helps

Step-by-step explanation:

Sylvia needs $315 more to buy a phone and some accessories. She has 15 weeks to split this up. To find out how much she should save each week, we can do 315/15 which is 21. Sylvia needs to save $21 per week.

PLEASE HELP I WILL GIVE YOU 5 STARS, THANK YOU, AND GIVE BRAINLIEST TO FIRST ANSWER

Answers

Answer:

I think it's figure B

Step-by-step explanation:

Over the y axis it would be in the quadrant where figure A is then move it three units down. It could only be B. For C it is reflected over the x axis so that can't be it.

Answer:

The answer is B. You're welcome!

I will give brainlest please explain and answer

Answers

Answer: the answer is D.

Step-by-step explanation:

6th grade math
13: what is the measure of angle y?

14: what is the measure of angle x?

15: what is the measure of angle z?

Answers

angle y and the angle measuring 76 degrees are opposite so they should be equal. this means angle y = 76 degrees.

angle x + angle measuring 76 degrees should = 180 (they are supplementary angles)

x + 76 = 180

180 - 76 = x

x = 104 degrees

angle z is opposite angle x so they are equal. angle z = 104 degrees

y is 76 because it’s vertical to the degree given and then z and x is 180-76 which equals 104. z and x are the same because they are vertical to each other

pls help due in 10 mins

Answers

Answer:

C

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

You can split apart the shape into to two different rectangles. The first one would have dimensions 3yd by 5 yd. The second one would have 2 yd by 4 yd. So your area is (3 * 5) + (2 * 4) = 15 + 8 = 23 yards

Brandon used inverse operations to solve an equation in his homework assignment. During which step, if any at all, did Brandon use the incorrect inverse operation to isolate the variable?

Equation: 8x3 + 2 = 26

Brandon's solution:

Step 1: (Subtract 2 from each side.)
Step 2: (Divide each side by 8.)
Step 3: (Divide each side by 3.)
Step 1
Step 2
All of the inverse operations were correct.
Step 3

Answers

Answer: c

Step-by-step explanation: i mean everything looks alright to me

Choose the type of geometric transformation and whether the transformation preserves congruency (Yes or No).

-reflection
-No
-rotation
-dilation
-translation
-Yes

Answers

rotation- yes
dilation- yes

7. Geometry Which set of ordered pairs can be
connected in order to form a right triangle?
A (-1,3), (FT, -1), (2, -1)
B (-4, 0), (0, 1), (1, -2)
C (2, 2), (2, -2), (-2, -2), (-2, 2)
D (0,5), (-3, 3), (3, -3)

Answers

I dunno budddddddxddddd
I’m guessing it’s b but idrk

20 students took a math quiz. 40% of the students got an A on the quiz. How many students got an A?

Answers

Answer:

8 students got an A

Step-by-step explanation:

20 x 0.40 = 8

Brainliest please

Other Questions
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