Mathematics Middle School

A survey showed that of 100 high school students, 50 of them took biology, 20 took chemistry, and 12 took both. How many of the 100 students took neither biology nor chemistry?

**Show your work**

Answers

Answer 1

Answer:

the answer is 18

Step-by-step explanation:

50+20+12=82

82 - 100 = 18

Related Questions

A section of road covers 18.3 square feet. Each square foot will require 5.1 minutes to repair.

How many total minutes will it take to repair this section of road?

Enter your answer in the box.

Answers

Answer:I think it’s 61 minutes

Step-by-step explanation:

Answer: 93.33 min
Explanation: 18.3x5.1=93.33 min

What is the product?

−4⋅2⋅(−9)


−72

−11

72

144

Answers

The answer is 72 reason because I’m did the assignment
72 just put it in a calculator

Please solve questions 3-5!!! PLEASE SOLVE ON PAPER, PHONE ETC!! PLEASE SHOW WORK DUE TOMORROW!! I WILL GIVE BRAINLEST TO PERSON WHO SLOVES IT RIGHT OR FIRST

Answers

There u r 3-5 ^^ Hope u have a great day :D

Answer:

4) 32522              ( is the slash a one? )

5) 153822

6) 41634

7) 60214

8) 976336

10) 779394

11) 120317

12) 34980

Step-by-step explanation:

You multiply

I hope it is ok that I didn't show how I did but I answered them for you

A local farmer started the year with
56 farm animals. At the end of the year, the farmer had 63 farm animals. What was the percent of change? (Show work)

Answers

Answer:

15 percent

Step-by-step explanation:

because i just guessed

The answer is about 11.1%

Julie ran 4 miles in 22 minutes. What is the unit rate in terms of minutes per 1 mile?

Answers

Julie runs 0.18 miles in one minute because 4 divided by 22 and you will get 0.18

Answer:

5.5 minutes

Step-by-step explanation:

4 miles = 22 minutes

1 miles = x minutes

22/4=5.5

1 mile = 5.5 minutes

Walmart marked up a bottle of nail polish 150% in order to make profit. if Walmart sells the nail polish for $8.75, what was the original cost of the polish?

Answers

The original price of the nail polish with a 150% markup sold at $8.75 is $3.50.

Let x be the original price of the polish.

Walmart marked up 150%.

Selling Price = Original Cost + Mark-up

therefore the selling price = x + 150% of x

we know the selling price is $8.75

Therefore, substituting the values:

8.75 = x + 150% of x

convert percentages to decimals:

8.75 = x + 1.5x

combine like terms:

8.75 = 2.5x

divide by 2.5 into both sides:

3.5 = x

use reflexive property:

x = $3.50

Thus, the original price of the nail polish is $3.50.

Learn more about markups:

brainly.com/question/28945726

A bedroom door has an area of 40 square feet and a perimeter of 28 feet. What are the dimensions of the door?

Answers

the answer is 4 by 10 i think
bc 4x10=40(area)
10+10+4+4=28(perimeter)

Answer:

1.42

Step-by-step explanation:

By what factor will the volume of the right regular pyramid be multiplied if the height remains the same but the sides of the base are multiplied by a factor of 3?


pls a need help

Answers

Answer:

33333333333333333333

Well a factor of three can only be a 1 or a 3

2(-4)-7=? Please help lol-

Answers

2(-4) = -8
-8 -7 = -15
Answer is -15

Answer: -15

Step-by-step explanation: Lol i tried!

Can anyone write me a definition of what Proportional Relationships are? (Must be exactly 5 words or less !! :D)

Answers

Two variables with equivalent ratios

two variable with equivalent ratios

please help me with this problem

Answers

Answer:

6/7

Step-by-step explanation:

1(3/4)

____

7/8

I’m pretty sure it’s 2 but I’m sorry if it’s not

PLEASE HELP ME WITH THIS
Please put an easy explanation for me to understand how to do this on my own.

Answers

Answer:

Step 1: Simplify both sides of the equation.

2w=1/4

Step 2: Divide both sides by 2.

2w/2=1/4/2  

Answer:

w=1/8

Answer:

So what you have to do is that first, you simplify both sides of the equation.

(2w = 1/4). Then you divide both sides by 2, (2w / 2 = 1/4 / 2). So after you do that, your left with w = 1/8. So W is equal to 1/8.

John used the following scale drawing to create a diagram of his bedroom. Each square is 1 cm. If the side of his desk that touches the wall is 3 m long, how long are the sides of the shelf that touch the walls?

Answers

Answer:

5 meter

Step-by-step explanation:

The shelf is 5 meters

Sarah babysits her neighbor's son to make money. Her earnings can be represented by the equation
M = 9h
where M is the money she earns and h is the hours she babysits.

Samara babysits her cousin to make money. Her earnings can be represented by the graph.

Answers

Answer:

7/108 or .006481

Step-by-step explanation:

Answer:

not gonna lie, i don't really know but maybe it could be $3 an hr.

Step-by-step explanation:

If you look at where the 2nd dot is on the graph, its lined up with 3 & 9. So, i would say to divide the 9 & the 3 to get 3 which shows $3 per hour.

Hope this is right and it helps! :)

Please help explain this to me

Answers

You divide 12 and 90 with 2 you can’t divide it anymore because you can’t divide 6 and 45 with the same answer.
I hope you understand a little better

Answer:

2/15  12/90=2/15

both 12 and 90 are multiples of 6 so we divide both of this by 6

so 12 divided by 6 is 2 and 90 divided by 6 is 15

so simpiflied 12/90 is 2/15

please help its that last question
26 PTS

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Solution ~

[tex]7 \dfrac{5}{6} - 3 \dfrac{1}{2} [/tex]

[tex] \dfrac{47}{ 6} - \dfrac{7}{2} [/tex]

[tex] \dfrac{47 - 21}{6} [/tex]

[tex] \dfrac{26}{6} [/tex]

[tex] \dfrac{13}{3} [/tex]

[tex]4 \dfrac{1}{3} [/tex]

A newspaper reports the following changes in the temperature of a city over 4 days:
2.64 degrees Celsius, negative 2 over 9 degrees Celsius, −0.35 degrees Celsius, 5 over 8 degrees Celsius

Write an expression to show the average daily change in the temperature of the city.

Write the steps to solve the expression. Round your answer to the nearest hundredth.

I kind of know what I’m Doing here but I want to make sure. In simple terms can someone show me a few ideas for exspressions and how to solve each one?

Answers

Answer:

I thought I answerd this one

(Redoing the question so everyone can see) Multiply. Enter the product in the simplest form.

2 2/5 x 5/7



The product is _____?



Please tell me how you got it very clearly



Any spam, nonsense, links, and anything that does not relate to this question will get deleted. Thank you.

Answers

So first you gotta convert 2 2/5 into and improper fraction which gives you 12/5. Which brings you to 12/5 x 5/7, you’re gonna wanna cross cancel the most common factor which is the number 5 and that leaves you to build up the fraction 12/7. Now you wanna convert your improper fraction to a mixed number, and you do that by putting it in long division form otherwise said as 12 divided by 7 which leaves you with 1 and a remainder of 5. 1 5/7 is your answer
If your problem is a fraction I can help… 1 5/7

Estimate the unit rate to the nearest hundredth

The unit rate is about $_ per egg.

Answers

Answer:

$2.40 per egg

$2.35

5 or more, round the number

Since we are rounding by the nearest hundred, the correct answer is $2.40 per egg

hey i need help with math algebra 8th grade homework and its functions

Answers

I'm not for sure but maybe a tutor can help you. I use the website all the time. You can look up askrose.com and they can help you. Its free too.

Have a good day

You can ask a teacher

A sandbox has an area of 32 square feet, and the length is 4 1/2 feet. What is the width of the sandbox?

Answers

to answer this you would need to divide the area (32) by the side length (41/2)

im gonna change it to 4.5

32/4.5 which is about 7.11->

answer 7.11->

Answer:

about 7.1 feet for the answer

Step-by-step explanation:

Pls pls pls pls help!

Answers

Answer:

1)

1/2 - C

1/4 - B

1/8 -D

? - A

1/2*1/4*1/8 = 1/16 of the class got an A

2) 40 lb = 840 oz

840 x* 2 1/4 = 1890 oz

Archie's dog eats 1890 oz of dog food in 2 1/4 years.

Answer:

1440 ounces

Step-by-step explanation:

80 pounds+ 10=90

90 pounds to ounces is 1440 ounces

Please help!! On a time limit!!!

Answers

Answer:

the line is at a 6.9 degree angle

Step-by-step explanation:

when the y = 69 the x = 420

Answer:

The answer is y = 1/8x

Step-by-step explanation:

Slope-intercept form is y = mx + b, with m being the slope and b being the y-intercept.

In this graph, we can see the line intersects the y-axis at point (0, 0). This means the y-intercept is 0, so we don't have to add it in the equation.

To find the slope, we use the formula m = (y₂ - y₁)/(x₂ - x₁) using two coordinate points on the line: (0, 0) and (8, 1).

Substituting it in the formula, we get m = (1 - 0)/(8 - 0), which simplifies to 1/8.

Putting this information into slope-intercept form, we get that the equation of the line in slope-intercept form is y = 1/8x.

Hope this helps!

Graph the ordered pair (-4,-1)

Answers

in the 3rd quadrant, so go to the left for spaces and go down one space
you start from negative 4 and go down one point to negative 1

May someone help me with this. The question is in the picture.

Answers

Answer:

5% of 38,000 is 1900, so the commision is 1900. if the sales doubles there would be double the commision which is 3800

The Commission is 1900

2x − 5 > 3 or −4x + 7 < −25
you have to plot it on a number line

Answers

Answer:

8

Step-by-step explanation:

2x - 5 > 3 or -4x + 7 < -25

2x < 8. or -4x < -32

x < 4. or. x > 8

8 because when u go to the u go

help pleaseeee loves -mother

Answers

Answer:

100

Step-by-step explanation:

Answer:

1.5% is shown.

Step-by-step explanation:

it is 2 squares cut in half so there are four pieces total. One whole thing is shaded thought making it 1.00 or 100% colored in. The other model is only half colored in making it 0.50 or only 50%. However they ask for the representation of both models so it comes out to 1.5%

help???? i’m no good at math

Answers

Answer:

Apply the distributive property to the left-hand side of the inequality.

Step-by-step explanation:

Using PEMDAS, what you need to do first is clear!

P -> parentheses ( distribute, clear them out, etc. )

E -> exponents

M -> multiplication

D -> division

A -> addition

S -> subtraction

Going in order, you would apply the distributive property first to clear out the parentheses.

GUYS ACTUALLY PLEASE HELP ME IT DUE TONIGHT
am dead ☠️

Answers

Answer:

5/3; 5/21

Step-by-step explanation:

he should have simplified 3/7 to 1/7 and multiplied 1/7 and 5/3 to find the product 5/21

Umm I need some help pleaseeeeee

Answers

Underline the verbs in these sentences and state in each case whether the verb has been used Transitively or Intransitively. If the verb is used transitively, point out the objects: Direct Indirect 1. Sheila gave us a bag. 2. Ioffered him a cake. 3. The car halted suddenly. 4. The teacher told us a story.

Answer:

Step-by-step explanation:

Elvin

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