Elizabeth got these grades on three tests: 72, 80 and 82. She had one more test to take. She wanted an average of 80 for the four tests. What score must she get on the fourth test?

Answers

Answer 1

Answer:

she at least needs an 87 for her average to be an 80

Step-by-step explanation:

87+72+80+82=321

321/4= 80.25


Related Questions

-__________________________-

Answers

Answer:

minecraft

Step-by-step explanation:

okay I agree with this question

Answer:

thx for the free points

Step-by-step explanation:

have a good day

Find the x-and y-intercepts of the graph of 2x + 8y = 30. State your answers as
whole numbers or as improper fractions in simplest form.
It’s for algebra

Answers

Answer:

x int= (15, 0)

y int= (0, 15/4)

Step-by-step explanation:

for x int- plug 0 in for y and solve for x

for y int- plug 0 in for x and solve for y

LA Galaxy have won 60% of their soccer matches. If they have played 40 matches, how many have they won?

Answers

Answer: LA Galaxy has won 24 of their soccer matches.

Step-by-step explanation:

To find 60% of 40, you can multiply 60/100 by 40.

60/100 x 40 = 24.

In conclusion, LA Galaxy has won 24 of their soccer matches.

A walkway goes through the middle of a square playground from one corner to the opposite corner. If the walkway is 20 meters long, how long are each of the sides of the playground? Round your answer to the nearest hundredths.

Need Help!

Answers

I think you would use the Pythagorean Theorem to solve this, as a square cut across diagonally creates two isocele triangles. Since the longest side is 20 m, this value would be imputed into c^2.

a^2 + b^2 = c^2
a^2 + a^2 = 20^2
2a^2 = 400
2a^2/2 = 400/2
a^2 = 200
a = 14.14

Thus, each sides of the playground are 14.14 meters long.

A store in Madison, Wisconsin, advertised an HDTV for $1,224.95.
a. What is the sales tax if the combined state and city rate is 6 percent?
b. What is the total purchase price?

Answers

Answer:

a. $73.50

b. $1298.45

Step-by-step explanation:

6% of $1224.95 is $73.50

add them and it's $1298.45 total

Pleaseee helppp answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

84.8 ft

Step-by-step explanation:

6.6x6 + 8.2x2 + 2x2 + 12.4x2 = 84.8ft

There are 39 students in a class of which 14 are girls,
What fraction of the students is girls?​20 points

Answers

Answer:

it would be 14/39

Step-by-step explanation:

answer: 14/39 hope it helps

cm
squa
(i)
D
5 cm
(ii
4 cm
A
6 cm​

Answers

Answer:

6 squared

Step-by-step explanation:

You have a rental company come and set up a tent for a wedding banquet. Each pole is 7 feet tall and the 20 foot-long rope goes from one stake to an eyelet at the top of the pole and back to the other stake. What is the equal distance each stake will be away from the base of the pole?

Answers

Answer and explanation:

The connection of the rope from the stake to the pole will form a triangle so that one side is the hypotenuse(the rope), another is the opposite side(the pole) and the other is the adjacent side(the distance from the stake to the pole).

The unknown side is the adjacent side which is the distance from the stake to the pole. To find an unknown side in a triangle in this form, we use the Pythagorean theorem.

Therefore c²=a²+b²

c=20ft

a= 7ft

b= unknown

So we use the formula to find unknown side(distance from stake to base of pole)

20²=7²+b²

400=49+b²

b²=400-49

b²= 351

b=√351

b= 18.735ft

Therefore distance from stake to base of pole = 18.735 feet

Of 500 seventh grade students, 310 walk to school. What percent of seventh graders do not walk to school?

Answers

Answer:

38%

Step-by-step explanation:

[tex]\frac{Part}{Whole}[/tex] × 100%

500 - 310 = 190

[tex]\frac{190}{500}[/tex] × 100% = 38%

An exponential function, f(x), passes through the points (2,5) and (8,20). Determine the value of f(25) to the nearest integer.

Answers

Answer:

assume: f(x) = A(bx); then: f(8) = A(b8) = 20;

and: f(2) = A(b2) = 5

dividing the first equation by the second equation gives: b6 = 4; or: b = 4(1/6) = 1.26;

then: A(1.262) = 5; or: A = 5/(1.262) = 3.15; then: f(x) = 3.15(1.26x);

so that: f(25) = 3.15(1.2625) = 1017.6 ---> 1018

Step-by-step explanation:

hope it helps and Work..

Simplify :

3x - 2(x - 5)

Answers

Answer:

x + 10

Step-by-step explanation:

-2(x-5) =

-2x + 10

3x - 2x + 10 =

x + 10

:)

the answer should be x + 10 :)

helppp

If h = 10 cm and r = 5 cm, then the volume of this cone is___________cm3. (round to the 100th)​

Answers

Answer:

261.8

Step-by-step explanation:

pi x 5 squared x 10/3 = 261.8 for a cone

2x-2= 10x -4 help me

Answers

Answer

-8x=-2

x=-2/-8

x=1/4

Step-by-step explanation:

Algebra 1B:
x/13 + 29 = -36​

Answers

Answer:

Solve for x by simplifying both sides of the equation, then isolating the variable.

x=−845

Step-by-step explanation:

If you flip the graph of the exponential function f(x) = 2x over the x-axis, what
is the equation of the new function?
O A. g(x) = 1/2
O B. g(x) = 2x - 1
O c. g(x) = 2-X
D. g(x) = -2X

Answers

Answer:

Step-by-step explanation:

G(x)=-2x

Answer:A

Step-by-step explanation:

Parking lots A and B each charge a set fee for parking plus an hourly rate.

Hours Parked48Lot A Cost ($)19.00/33.00

Lot B Cost ($)20.00/32.00

How many more dollars does it cost per hour to park in Lot A than in Lot B? Give the answer as a decimal showing dollars and cents.

Answers

Answer:

$0.5

Step-by-step explanation:

Given :

Hours ___Lot A Cost ($) ___ Lot B Cost ($) 4____________19.00 _____ 20.00

8 ___________ 33.00 ______ 32.00

Using the equation :

y = mx + C

m = slope = Hourly charge

C = intercept = set park fee

m = y2 - y1 / x2 - x1

For LotA:

m1 = (33 - 19) / (8 - 4)

m1 = 14 / 4

m1 = 3.5

For LotB:

m2 = (32 - 20) / (8 - 4)

m2 = 12 / 4

m2 = 3

Since, m is the hourly cost :

Difference = m1 - m2

= 3.5 - 3

= $0. 5

GEOMETRY: Find JL of the line.

Answers

Answer:

JL = 31

Step-by-step explanation:

JL is the total length of the line segment. We know that JK is 15 units long and that KL is 16 units long. So, you would add these numbers (15 & 16) together to get the total length of the line segment. Hope this helps! :)

Farid thinks last month was unusually rainy in his town—they had 6 inches of rain! His town's current record for rainfall in a year is 2 feet. Farid wonders what the new record would be if they were to keep getting this much rain for an entire year. If Farid's town had 6 inches of rain every month for 12 straight months, by how many feet would they beat the annual record?

Answers

They would beat the annual record by 4 feet

Ill give u brainly if u help on this one too please !

Answers

Answer:

The correct answer is B!

Step-by-step explanation:

I hope it helps you Sir (or ma'am.)

Four expressions are shown below:


A 21x + 6
B 3(7x + 2)
C 18x + 9
D 3(6x + 3)

Which two expressions are equivalent to 3(6x + 2 + x)? ( by the way i will give brainlist to who ever says the awnser plus say #BRAINLISTPLZ )

Answers

Answer:

B) 3(7x + 2)

Step-by-step explanation:

6x is 6x and x is 1x but you don't usually put the 1 infront of the x.

Look at the image of a composite figure. What polygon shapes form this
composite figure?

Answers

A triangle and a rectangle are combined to create the figure.

Question 2
Write an equation in slope-intercept form for the line with slope - 3 and y-intercept - 1.
D=0
.
Х

Answers

Answer:

y=-3x-1

Step-by-step explanation:

Slope-intercept format:

y = mx+b

m = slope

In this case, the slope is -3

b = y-intercept

In this case, the y-intercept is -1

Now we plug it in to get the equation:

y=-3x-1

I hope this helped!

Sincerely,

Rekifromsk8theinfinity

:D

Mrs. Upton's baby weighs 5 pounds and 4 ounces. How many total ounces does the baby weigh?

Answers

Answer:

84 ounces

Step-by-step explanation:

5 pounds in ounces is 80 plus the 4 ounces is 84

hope this helps

pls mark brainliest

Answer:

84 ounces

Step-by-step explanation:

16 ounces per pound

16 x 5 = 80

80 + 4 = 84

you can buy 7 oranges for 8.50 what is the price per orange

Answers

Answer:

The price of one orande is 1.21.

Step-by-step explanation:

Answer:

Short Version: 1.21

Long Version: 1.21428571

Step-by-step explanation:

Just divide 8.50 by 7

Solve for x. Need help please

Answers

Answer:

19

Step-by-step explanation:

1. Both angles would probably add up to 180 degrees.

2. So rewrite this as an equation. (2x + 3) + (9x - 32) = 180

3. Add up like terms like 2x and 9x which would be 11x

4. Rewrite equation again for less confusion. 11x + 3 - 32 = 180

5. Combine like terms again. Like terms this time are 3 and 32

6. 3 - 32 which would be negative 29

7. Rewrite equation again for less confusion. 11x - 29 = 180

8. Add 29 to both sides of equation meaning add 29 to 180.

9. You're left with 11x = 209

10. Divide 209 by 11

11. Lastly you get 19.

I hope this helped and that it's right!


what’s the answer? someone help!!!

Answers

I’m pretty sure it’s B
The answer is C am pretty sure

Peter wrote five numbers. Which of peters numbers can be divided into 7 equal groups with 0 left over? Choose that all apply 56, 52, 42, 35, 27,

Answers

Answer:

56

42

35

Step-by-step explanation:

Select the expression that shows the application of the distributive property for

9(t - 5)
a
9t + 14
b
9 + t + 9 + 5
c
9t + 45
d
9t - 45
PLEASE HELP ME!!!

Answers

Answer:

c. 9t+45 that shows distributive property

where it shows a*(b+c)=(a*b)+(b*c).so,9(t+5)=9*t+9*5

g(1) if g(x) = x^2 + 1.

Answers

Answer:

g(1)=2

Step-by-step explanation:

g(1)= 1^2+1 (you fill in 1 for x)

g(1)=1+1 (1 to the second power is 1 times 1 which is 1 and then you add 1 and 1)

g(1)=2

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