You earned a 70% on a recent math test. You answered 21 questions correctly. How many problems were on the test?

Answers

Answer 1

Answer:

I believe the answer to your question would be 30.

Answer 2
The answer would be 30

Related Questions

Can someone plz help me with this??

Answers

Answer:

it's the second choice (3=3)

Answer:

y = - x + 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

with (x₁, y₁ ) = (1, 3) and (x₂, y₂ ) = (3, 1)

m = [tex]\frac{1-3}{3-1}[/tex] = [tex]\frac{-2}{2}[/tex] = - 1 , then

y = - x + c ← is the partial equation

To find c substitute (1, 3 ) into the partial equation

3 = - 1 + c ⇒ c = 3 + 1 = 4

y = - x + 4 ← equation of line

What is the triangle congruence postulate

Answers

Answer:

7.09 meters allpppppppp

The Parker Solar Probe is supposed to reach a top speed of 430,000 miles per hour. If it
were to fly at this speed for 43,800 hours (5 years), how many miles would it travel?

Answers

1.88*10^10 miles

Step-by-step explanation:

(430,000m/h)*(24 hours/ 1 day)*(365 days/ 1 year)*(5years)

Everything but miles cancels out,

430,000*(24*365*5) = 18,834,000,000miles

Or, 18.8 billion miles

Or, 1.88*10^(10) miles

94.76 is 23% of what number?

Answers

Answer:

412

Step-by-step explanation:

i need more letters snsnsnsnsjjs

I have to apparently type 20 things just to say it’s “412”

Help! brainliest stars and hearts if correct! Please Area and perimeter! Please explain!

Answers

Answer:

Perimeter = 14 in

Area = 8 in^2

Step-by-step explanation:

Area = 2x2 + 4x1 = 8 in^2

Perimeter = 2+2+2+2+1+4+1 = 14 in

Answer:

The area is 8 square inches and the perimeter is 16 square inches.

Step-by-step explanation:

First, find the area.

We can find the area of the rectangle at the bottom pretty easily. Since half of the length of the bottom rectangle measures 2 inches, the full length would be 4 inches.

4 ⨯ 1 = 4

So, the area of the bottom rectangle is 4 square inches.

For the square on top, all you have to do is multiply 2 ⨯ 2, because there is no missing length we need to find out.

2 ⨯ 2 = 4

Now, we have to add 4 + 4, because the two quadrilaterals are joined together.

4 + 4 = 8

So, the area of the shape is 8 square inches.

Now, let's find the perimeter. We already know that the bottom rectangle's length is 4 inches, and that the sides are 1 inch tall. The square is 2 inches all around, so, no problems there.

Add the side measurements, not including the 2 inches at the bottom of the square because that side is inside the big shape.

2 + 2 + 2 + 4 + 1 + 4 + 1 = 16

So, the perimeter of the shape is 16 inches.

A motorcycle travels 1076 meters in 12 minutes. What was the average speed of the motorcycle?

Answers

Answer:

89.6 meters per minute

Step-by-step explanation:

The temperature was -5°F and then fell 8°F.

Answers

Answer:

The temperature is now -13 degrees Fahrenheit

Hope that helps!

Step-by-step explanation:

Answer:

It increased??

Step-by-step explanation:

help me please i really need it

Answers

28/10 is ur answer ur welcome

Curved surface of a cone of slant height 20 cm and base radius 14 cm is ____. * 1 point 280 sq.cm 2080 sq.cm 1496 sq.cm 880 sq.cm

Answers

Answer:

880 cm²

Step-by-step explanation:

Given that :

Curved surface area of a cone : πrl

r = base Radius = 14 cm

l = slant height = 20 cm

Hence,

Curved surface area = π * 14 * 20

Curvwd surface are = π * 14 * 20

Curved surface area = 879.64594 cm²

Curved surface area = 880 cm²

i need help with this please
(2 choices)

Answers

Answer:

First two (S = 9.20   K = 10.15)

Step-by-step explanation:

Hours = x

Money Earned (AED) = y

Shamael

y = 9.2x

AED = 9.2(hours)

$9.20 an hour

Kamla

y = kx

  ([tex]x_{1} ,y_{1}[/tex]) = (5, 50.75)

  ([tex]x_{2}, y_{2}[/tex]) = (4, 40.60)

  k = [tex]\frac{y_{1}-y_{2}}{x_{1}-x_{2}}[/tex] = [tex]\frac{50.75-40.60}{5-4}[/tex] = [tex]\frac{10.15}{1}[/tex] = 10.15

AED = 10.15(hours)

$10.15 an hour

What is the sum of the length of the longest meteor and the length of the shortest meteor?

Answers

Answer:

your answer will be option C

Step-by-step explanation:

hope it helps

have a great day

Willy is creating a garden this is the diagram of willy's garden what is the area of the garden he's going to build. 32ft,26ft,10ft driveway 20ft,7ft garden 14ft.

Answers

Answer:

the answer is 230 ft squared

Step-by-step explanation:

We can solve this by subtracting the area of the driveway from the entire rectangle

The area of a rectangle is , so multiplying 14 by 32, we get 448

Now we need to find the area of the driveway. We can split up the driveway into 2 rectangles, one big rectangle at the left and a tiny rectangle in the upper right.

To find the area of the big rectangle in the driveway, we multiply 10 by 20, getting 200.

To find the area of the tiny rectangle in the driveway, we subtract 20 from 26 to find the length, which is 6.

Now we need to find the width of the tiny rectangle. We can do this by subtracting 7 from 10, getting 3.

Multiplying 6 by 3, we get 18, so the area of the tiny rectangle is 18.

Adding 200 to 18, we get 218, so the area of the driveway is 218 ft squared.

Now we need to subtract 218 from 448.

448-218=230

Find the reference angel

Answers

50° heheheheehehehehe

The table shows experimental values of variables x and y.

x 2 2.5 3 3.5

y 18.8 29.6 46.9 74.1


By plotting a suitable straight-line graph on a grid, show that x and y are related by the equation y=ab^x, where a and b are constants.



(4 marks) B) Find the value of a and b.

Answers

i don’t know the answer and that’s on god

Answer:1 (CIE 2012, s, paper 11, question 7)

The table shows values of variables

x

and

y

.

x

1

3

6

10

14

y

2.5

4.5

0

20

56

(i) By plotting a suitable straight line graph, show that

y

and

x

are related by the equation

y

=

A

x

+

B

x

2

,

where

A

and

B

are constants. [4]

(ii) Use your graph to find the value of

A

and of

B

.

[4]

2 (CIE 2012, s, paper 22, question 7)

The table shows experimental values of variables

x

and

y

.

x

5

30

150

400

y

8.9

21.9

48.9

80.6

(i) By plotting a suitable straight line graph, show that

y

and

x

are related by the equation

y

=

a

x

b

,

where

a

and

b

are constants. [4]

(ii) Use your graph to estimate the value of

a

and of

b

.

[4]

3 (CIE 2012, w, paper 11, question 10)

The table shows values of the variables

x

and

y

.

x

10

30

45

60

80

y

11.2

16

19.5

22.4

24.7

(i) Using the graph paper below, plot a suitable straight line graph to show that, for 10°

x

80°,

y

=

A

sin

x

+

B

,

where

A

and

B

are positive constants. [4]

(ii) Use your graph to find the value of

A

and of

B

.

[3]

(iii) Estimate the value of

y

when

x

=

50.

[2]

(iv) Estimate the value of

x

when

y

=

12.

[2]

4 (CIE 2012, w, paper 22, question 8)

Step-by-step explanation:

Find the difference. 40.574 - 8.09

Answers

Answer:

32.484

Step-by-step explanation:

Maura is going to hire a makeup artist for a fashion show and is comparing prices. Evelyn charges $19 as a booking fee and an additional $89 per hour. Brenda charges $87 per hour, plus a booking fee of $21. Depending on the length of the show, the cost could end up being the same for either artist. How long would the show be? What would the cost be?

Answers

Step-by-step explanation:

Evelyn: Y=89x + 19

Brenda: Y=87x + 21

Punch in numbers for X until you get the same for both. Remember that X is hours and Y is total. the numbers with no letters is the fixed booking amount. cheers. Good luck :)

Jim and Krutika win some money and share it in the ratio 3:1. Jim gets £40 more than Krutika.
How much did they get altogether?

Answers

Step-by-step explanation:

let the amount that Krutika gets be x, therefore, gets him the amount that jim get will be x +40

therefore 3/1=x+40/x

hence 3x=x+40

therefore x=40/2

x=20

Step-by-step explanation:

let the amount that Krutika gets be x, therefore, gets him the amount that jim get will be x +40

therefore 3/1=x+40/x

hence 3x=x+40

therefore x=40/2

x=20

Slope for y:2(x-y)-2(2x+7)=4

Answers

Answer:

graph y=2x-7

Step-by-step explanation:

need help ppl
answer needed asap ​

Answers

Answer:

Step-by-step explanation:

Tell whether the angles are adjacent or vertical. Then find the value of x

Answers

Answer: The angles are vertical. The value of x=25

Step-by-step explanation:

4x-25=75

 +25  +25

4x=100

/4    /4

x=25

I hope this help you! :)

Mr. Rose randomly selects names to see who will give the first book report. There are 10 boys and 14 girls in his class. What is the probability that Mr. Rose will select a girl’s name?

Answers

Answer:

14/24 or 58%

Step-by-step explanation:

what is 4/5 divide 3/10​

Answers

Answer:

4/5×10/3

4×2=8

1×3=3

8/3

i think the answer is 8/3!

A store is having a 20% off sale. You purchase a pair of bluetooth
headphones for $75. What was the original price?

Answers

Answer:

60 dollars

Step-by-step explanation:

well it's simple

Answer:

($75)(0.20)=     then add that answer to 75

Step-by-step explanation:

please help!!
A math test is worth 50 points, but there is extra credit. If you get 110% on the test, how many points is your score?

Answers

Answer:

55 points

Step-by-step explanation:

110% = 1.1

50 x 1.1 = 55

Answer:

55 points.

................

Help me with this!! I will mark Brainliest!!!

Answers

Answer:

1...-

Step-by-step explanation:

Find the new amount if the original amount is 74 degrees and the percent of decrease is 3%. Round to the nearest tenth. Show all work.


answer for a brainlist!!!

Answers

Answer:

71.78? (not sure)

Step-by-step explanation:

To find 3% of 74, 74*.03 = 2.22

Subtract 3%, 74-2.22 = 71.78


20 Is 80 percent of what number?
A 21
В 22
С 24
D 25

Answers

Answer:

D. 25

25 percent * 80 =

(25:100)* 80 =

(25* 80):100 =

2000:100 = 20

In 2011 Tufts University had 17,000 applicants. Each year the number of applicants increased 11% from the previous year.

How many applicants would you expect Tufts University to have in 2013? Round to the nearest whole

Answers

Answer: 20,740

Explanation: it’s up by 2 years each being 11% so just multiply that by 2 and just do
17,000 x 22% which is 17,000 x 0.22 = 3,740
So 17,000 + 3,740 = 20,740

how to find the slope for (2,2) and (-1,2)

Answers

the slope is rise over run.

rise= y

run= x

(x,y)

so (2,2) the slope is 2 over 2

and for (-1,2) the slope is -1 over 2.

you run -1 (backwards since ite negative) and go up 2 steps.

Answer:

The slope would be 0

Step-by-step explain:

m= rise / run= x2-x1 over y2-y1

Solve for x: 2 over 3 (x − 2) = 4x. (1 point) negative 2 over 5 negative 5 over 2 2 over 5 5

Answers

-2/5

solve
distribute
subtract 4x from both sides
simplify
multiply
simplify
add 4 to both sides
simplify
divide both sides
simplify
Other Questions
Founded in 1833, the American Anti-Slavery Society received overwhelmingly positive support. adopted resolutions and sent petitions to Congress. was opposed by activist William Lloyd Garrison. held meetings in private out of fear of reprisals. Desertification would MOST impact which climate area first? A) Sahel B) Mediterranean C) Tropical Savanna D) Tropical Rainforest Linda has a toy car that can drive 6 ft in 2 seconds how many feet can it drive in 1 second Look at the system of equations below.x- 2y = 4y=4-xTrevor stated that (4,0) is the solution to the system of equations. Joey stated that (0, -2) is the solution to the system of equations. Whichconclusion is true? A tank is is half full of oil that has a density of 900 kg/m3. Find the work W required to pump the oil out of the spout. (Use 9.8 m/s2 for g. Assume r = 15 m and h = 5 m.) W = 1.59 J Dana ordered 6 pizzas for her party and each pizza is sliced into quarters. She says in order to find out how many slices there are, she needs to calculate 6 0ne fourth. Which multiplication expression will also solve the problem of how many slices there are? A.24 one sixth B.4 one sixth C.6 one fourth D.6 4 plzzzzz help I'm not good at math Use Law of Sines or Law of Cosines to solve for the missing parts of each triangle what is the surface area Please answer both question above and below A trapezoid has bases that measure 9 cm and 5 cm. The height of the figure is 4 cm. What is the area of the trapezoid?28 cm36 cm45 cm90 cm i need ur help thanksss what key element is found in gothic literature Do you think the United States was justified in droppingatomic bombs on civilians, not soldiers? Why or why not? I need help Please help me Please help!!! What is electrolysis? You are the manager of a firm that sells its product in a competitive market at a price of $48. Your firm's cost function is C = 60 + 2Q 2. Your firm's maximum profits are Pleas help me, please explain how you got your answer :) An adult victim, suspected of an opioid overdose, has no pulse and is not breathing. What should be the rescuer's next step? Administer naloxone. Provide high-quality CPR. Wait for a defibrillator. Determine the type of opioid used. does uranium use steam? A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat. y 45x 100y = [?