Suppose 25 students are in your math class and 80% of them pass this unit test. How many pass the test?

Answers

Answer 1

Answer:

20

Step-by-step explanation:

We find answer 25 x 0.80 =20

We only x 100 when we looking for an increase

Answer 2

Answer:

二十

Step-by-step explanation:


Related Questions

Bozo the clown brings a total of 20 balloons to Jake’s birthday party. There are 7 yellow, 2 red, and 11 green balloons. He reaches into his pocket and randomly selects a color to make a balloon animal. If he pulls a yellow balloon first, what is the probability of the next color to be selected randomly will also be yellow?

Answers

Answer:sorry mabye if you elpan it mire i can help

Step-by-step explanation:

Jill’s coach used a computer program to help her improve the distance she can throw a softball. The computer gave a readout of the path of her best throw. The path of this throw was represented by the quadratic equation y = –0.15x2 + 1.3x + 4, where x represents the number of feet the ball traveled and y represents the height of the ball in feet. Use the graphing calculator to graph the equation. At what distance did the ball hit the ground? Round your answer to the nearest hundredth. feet

Answers

Answer:

11.08 feet

Step-by-step explanation: I just got it wrong and it told me the answer. :/

Answer:

11.08 feet

Step-by-step explanation:

Got it right on edge

Jorge PAGO DE CONTADO $200 000 POR UN AUTOMÓVIL. SI ORIGINALMENTE COSTABA $250 000 ¿Qué PORCENTAJE DE DESCUENTO LE HICIERON ?

Answers

Answer:

20%

Step-by-step explanation:

$(200 000/ 250 000) = .8 = 80%, seguís pagando 80% entonces distes un descuento de 20% (100-80=20%)

Ken’s prediction for December was –5°C. The actual low temperature was 3 degrees higher than his prediction. The actual low temperature in December was _ºC.

Answers

Answer:

 -2 °C

Step-by-step explanation:

Add 3 °C to get a temperature 3 °C higher.

 -5 °C + 3 °C = -2 °C

Answer:

-2

Step-by-step explanation:

hope this helps :)

Martin made 12 out of 40 shots during the basketball game. What percent of his shots did he make?

Answers

Answer:

30 percent

Step-by-step explanation:

12/40=0.3

0.3=30 percent

Answer:

30%

Step-by-step explanation:

To find a percent, use this equation:

x/100 = n/t

where x is the percent, n is the select number of things, and t is the total number of things

Substitute:

x/100 = n/t

x/100 = number of shots Marin made/number of shots attempted

x/100 = 12/40

Now, we need to cross multiply, or multiply the numerators by the denominators of the other fraction, and vice versa.

Multiply:

x/100 = 12/40

x(40) = 40x

100(12) = 1200

40x = 1200

Now, divide both sides of the equation to find the value of x.

Divide:

40x = 1200

/40     /40

x = 30

Now we have the percent is fraction form: 30/100

To make it a percentage, simply take the numerator and add the % sign.

Therefore, Martin made 30% of his shots.

help meeee, i need helppp

Answers

Answer: The first one is A. 16 + 10 +10 +10 +10  

The second one is 40  units^2

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

When you get all the areas together, the answer is A. Sorry i was late to help

You and your friend play the same note. Your friends instrument is in tune and is playing a note it 256 Hz, but your are slightly out of tune and are playing a note at 260Hz. What is the beat frequency

Answers

Answer:

In fact, they'll do that if only ONE of them is out of tune.

As long as there's a difference between the two frequencies,

they'll create beats.

Step-by-step explanation:

hope this helps plz brainiest

The graph represents this system of equations.
What is the solution to the system of equations?
Sv=4-x
v=x-2
(-2,4)
(1,3)
(2,4)
(3, 1)
-5 -4 -3 -2

Answers

Answer:

(3, 1 )

Step-by-step explanation:

The solution to a system of equations give graphically is at the point of intersection of the 2 lines.

The point of intersection is (3, 1 )

Thus solution is (3, 1 )

What is the volume of a hemisphere with a radius of 29.6 in, rounded to the nearest tenth of a cubic inch?

Answers

Answer:

V = 54316.7 in³

Step-by-step explanation:

V = 54316.7463 in³

The solution is, the volume of a hemisphere with a radius of 29.6 in, rounded to the nearest tenth of a cubic inch is, 54289.2 cubic inches.

What is volume?

In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.

here, we have,

a hemisphere with a radius of 29.6 in,

i.e. The radius is 29.6.

now, we know that,

the volume of a hemisphere = 2/3 * pi* r^3

using the formula, we get,

V = 2/3 * 3.14 * 29.6³

   =54289.2100267

now, rounded to the nearest tenth  we get,

54289.2100267 ≈ 54289.2

The volume of the hemisphere should be 54289.2 cubic inches.

To learn more on volume click :

brainly.com/question/1578538

#SPJ6

Can you guys help me plsss
I do not get this work

Answers

Answer:

160 square units

Step-by-step explanation:

We need to find the surface area of this figure, which is basically the areas of all the exterior sides.

Looking at the pyramid, we notice that we have 4 congruent triangles and 1 square.

Triangles:

The area of a triangle is denoted as A = (1/2) * b * h, where b is the base and h is the height. Here, the base is 8, so b = 8, and the height is 6, so h = 6. Plug these values in to get the area of one triangle:

A = (1/2) * b * h

A = (1/2) * 8 * 6 = (1/2) * 48 = 24

The area of one triangle is 24 square units, so the area of 4 is 24 * 4 = 96 square units.

Square:

The area of a square is denoted by: A = s * s = s². Here, s = 8, so plug that in:

A = s²

A = 8² = 8 * 8 = 64

The area of the square is 64 square units.

Now add up the areas of the triangles and square:

96 + 64 = 160 square units

The surface area is 160 square units.

Answer:

160

Step-by-step explanation:

Surface area = 4 triangles + square

4(½ × 6 × 8) + 8²

96 + 64

160 units²

What is the height of the cone below?

3 in.
9 in.
27 in.
75 in.

Answers

Answer:

The answer should be 9in.

hope that helped.

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

The safe fluoride-to-water ratio is 0.5 to 1.4 parts per million (ppm) gallons. What is the range in parts of fluoride that could be added to 500,000 gallons of water?

Answers

Answer:

250,000 to 700,000 parts

Step-by-step explanation:

For the lower ratio of 0.5, we have to get 0.5 flouride parts/1 gallon of water equivalent to (some fluoride parts)/ (500,000 gallons of water). we can multiply 500,000 by 0.5 to get 250,000 as our lower limit. Similarly, we can multiply 500,000 by 1.4 to get 700,000 as our upper limit

A point B(−4,4) is rotated 90° clockwise about the origin. FInd the coordinates after rotation.

Answers

Answer:

It would be positive(4,4)

Step-by-step explanation:

hope it helps

(4,4)

since your moving 90 degrees to the next x-axis (i think)

!Emergency math question!

Answers

Answer:

Equation: P = 1900 + 70n

Answer if 26 copies sold= 3720

Step-by-step explanation:

Answer:

p=1900 +70n

Step-by-step explanation:

Whats the area of a square that is 9m and 9m?

Answers

Answer:

81 m².

Step-by-step explanation:

To find the area of a square, you will simply need to do the side-length squared, or [tex]A= l^{2}[/tex].

If the side-length is 9, we can do:

A = 9²

A = 81 m²

Step-by-step explanation:

Step 1:  Find the area

An area of a square has a formula of → [tex]A= s^2[/tex]

[tex]A = 9 * 9[/tex]

[tex]A = 81[/tex]

Answer:  [tex]Area=81m^2[/tex]

Each food item contributed to the local food bank is recorded as a positive number, while each food item donated to a family is recorded as a negative number. The food bank started with 508 items. How many items were on the shelves after the following contributions and donations?

-8, -29, +17, -12, -9

Answers

Answer:

467

Step-by-step explanation:

-8-29+17-12-9= -41

508-41= 467

Find the volume of the cylinder to the nearest tenth. Use 3.14 for it.
6 m
15 m
The volume of the cylinder is approximately
m​

Answers

Answer:

1696.46

Step-by-step explanation:

the formula of a cylinder volume is πr2h. Which is 3.14 x 6squared x 15. And then you'll have the volume.

Give 3 angle measures of an obtuse triangle. ​

Answers

Answer:There are many different answers :-)    but 100, 40, 40 is one

Step-by-step explanation:

There are quite a few answers, but you need to make sure 1 angle is greater than 90 degrees.  The remaining two angles should add up to less than 89 degrees and all 3 angles should total 180 degrees.

i.e. 100, 40, 40

He buys 1 quart of milk and one eighth
gallon of milk. How many cups of milk does he ​buy?

Answers

Answer:

He bought six cups of milk

Step-by-step explanation:

1 quart is 4 cups and one eighth of a gallon is 2 cups.

find the value of 1÷3x when X=1​

Answers

1÷3x when x=1

1÷3×1=1÷3≈0.67

Identify the constant term in 14x + 6y - 5. A. 14 B. 6y C. -5 D. 5

Answers

Answer:

D

Step-by-step explanation:

Answer:

C. -5

Step-by-step explanation:

14x and 6y both have variables attached to them

the most basic form for a function like this is ax+by+c

the definition of constant is a fixed value. the reason your constant has to be a solo number, not attached to a variable, is that these variables change the number!! so, -5, the only number that won't change in the function, is the constant.

-7x = 42

I need an answer

Answers

Look at the attached picture

Hope it will help you

Answer:

[tex]x = - 6[/tex]

Step-by-step explanation:

[tex] - 7x = 42 \\ \frac{ - 7x}{7} = \frac{42}{ - 7} \\ x = - 6[/tex]

HELP!
This pattern follows the rule divide by 5. What is the next number in the pattern?

875, 175, 35, ________

A. 17
B. 12
C. 7
D. 3

Answers

Answer: C

Step-by-step explanation:

C
Because 35 divided by 5 is 7

If U is the set of all natural numbers less than 10, A is its subset containing all natural numbers less than 6 and B⊂U consists of all natural numbers greater than 4 (and of course smaller than 10), draw Venn diagram showing these sets. List elements of sets A, B, their union, and their intersection.

Answers

Answer:

U = {1,2,3,4,5,6,7,8,9}

A = {1,2,3,4,5}

B = {5,6,7,8,9}

Step-by-step explanation:

Jermaine went to the Adventureland Park with $40 to spend. His ticket cost $16. Write and solve an inequality to show how much he might spend on souvenirs and snacks.
Please help me do this ❤️

Answers

Answer:

24$ left

Step-by-step explanation:

40-16=24$

he has 24$ left for snacks

make me brainiest and hope this helps

Given sec A =
✓97/9
and that angle A is in Quadrant I, find the exact value of tan A
in simplest radical form using a rational denominator.

Answers

Answer: 4/9

Step-by-step explanation:

9^2+B^2= 97

81+b^2=97

b^2=16

B=4

opposite=4

adj=9

tan= opposite/adj = 4/9

Question 18(Multiple Choice Worth 1 points) Using the given zero, find all other zeros of f(x). -2i is a zero of f(x) = x4 - 45x2 - 196

Answers

The picture shows the zeros of f(x). -2i is a zero of f(x) = x4 - 45x2 - 196

Rewrite the function by completing the square.
h(x)=4x^2-36x+81

Answers

Answer:

[tex]4(x-4.5)^2+60.75[/tex]

Step-by-step explanation:

[tex]h(x)=4x^2-36x+81\\\\h(x)=4(x^2-9x+20.25)+60.75\\\\h(x)=4(x-4.5)^2+60.75[/tex]

Hope this helps!

Answer:

Step-by-step explanation:

Use the formula  

b/2^2

Answer: 4( x- 9/2)^2 + 0

Solve by completing the square with working out please

x^2-7x-30=0

Answers

Answer:

x1 = -3 and x2 = 10

Step-by-step explanation:

hope this helps

Answer:

answer attached below

Step-by-step explanation:

Write the equation 3x+2y- 5 = 0 in normal form. Then, find the length of the normal and the angle it makes with the


positive x axis.

Answers

Hey, hope you are having a nice day. The answer I got was y=-1.5x+2.5. This was because most equations are y=mx+b. So y had to be by itself.
3x+2y-5=0
-2y. -2y
3x-5=-2y since 0 doesn’t do anything
——- ——
-2. -2
-1.5 +2.5 =y

Answer:

The answer is a

Step-by-step explanation:

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