Mary took a math test and she got four questions incorrect and 21 correct. What percent did answer correctly?

Answer:

84%

Step-by-step explanation:

21 correct + 4 wrong = 25 questions in total

[tex]\frac{21}{25}[/tex] x 4 = [tex]\frac{84}{100}[/tex]

[tex]\frac{84}{100}[/tex] = 0.84

0.84 = 84%

Which of the following best describes the solution to the system of equations below? -8x + 3y = -6 9x - 3y = 6 A. The system of equations has exactly one solution where x = 8 and y = 2. B. The system of equations has no solution. C. The system of equations has infinitely many solutions. D. The system of equations has exactly one solution where x = 0 and y = -2.

which angle is complementary to <2​

A school counselor surveyed 90 randomly selected students about the languages they speak. Of the students surveyed, 15 speak more than one language fluently. Based on these results, how many of the 1,800 students at the school can be expected to speak more than one language fluently? A.288 B.300 C.113 D.389

What is the volume of this cone?

Given point A(2, -1) and point B(5,3), what is the slope of a line that passes through
points A and B?

has anyone taken the math kangaroo competition

and if so how should i prep theres not much material on it im currently in level 7-8

A store sells jump ropes. Each jump rope costs the same amount. During a sale, the store reduces the price of each jump rope by $1.90. Mar
spends $12.78 on 2 jump ropes at the sale price.
What was the price of 1 jump rope before the sale?

i need help asap! pls ​

Will mark brainliest to whoever gets it right!
Match the terms to their descriptions

Help me solve this question please

HELPP ME!! Ya'll brainly has answers for this question but they're all different answers!! I'm so unsure! One of the offices at the company was being repainted. Riley’s mother challenged him to figure out how many quarts of paint would be needed. The office is 16 ft long and 12 ft wide, and the height of each wall is 10 ft. The office floor, ceiling, and door are not being painted, and there are no windows in this office. The door opening measures 3 ft by 8 ft. One quart of paint covers 2 100 ft . How many quarts of paint are needed to paint the room, if only full quarts can be purchased? Show your work.

I hate stuff like this can someone help

The surface area of a cone is about 64 square meters. The radius of base is 2 meters. What is the slant height?

Find the area.
4 cm
6 cm
6 cm
square centimeters

HELP! A TV salesperson makes a 6% commission on each ty they sell. If they sell 1 TV that
cost $625 dollars, how much commission do they make?

It costs $150 to rent a party room at Pizza-n-Games, plus $6 per person for pizza and $5 per person for game tickets. The expression showed gives the total cost for n people.

150+6n+5n
Evaluate the expression to find the cost for a party of 15 people

pls help me with this question it’s math look at the pic

Grades do Friday plz help I’ll do anything 1. Write an equation in standard form for the line shown
10
2. The equation 2x - 5y = 20, the table below, and the graph
below represent three different linear functions.
X
у
3
1
-2
4
-1
7
0
10
21
2
13.
16
3
19
1
which function represents the line with the greatest slope?
Explain your reasoning
3. Winto an equation in standard form for the line that is
represented by the data in the table
x
-1
2
3
7
5
3
1
4. Write an equation in standard form for the line with a stope
of that passes through the point (2)
5. Doomine the concept y barcopt, and slope of the line
described by 3x7 -21

Please help with these 3! Don’t need the steps, just the answer

In ΔPQR, \overline{PR} PR is extended through point R to point S, \text{m}\angle QRS = (10x-1)^{\circ}m∠QRS=(10x−1) ∘ , \text{m}\angle RPQ = (3x+17)^{\circ}m∠RPQ=(3x+17) ∘ , and \text{m}\angle PQR = (2x+12)^{\circ}m∠PQR=(2x+12) ∘ . Find \text{m}\angle QRS.M∠QRS.

Working at papa rons pizza you make 30 per shoft plus 3 per pizza you deliver. If you worked gor bombinoes you eould make 20?Per shift snd 4 per pizza you delivers. How many pizzas do you have to deliver to earb the same amount of money

Which of the following numbers makes the inequality -2 A-5
B
-2
C 5
D 6
E
-3
6
Evie's test score is greater than 65, but no more than 90. An inequality that represen
this is

Is this true for false?

whats the line shown on graph?

Last year, a school had 632 students. This year the school has 670 students. Find the percent of increase in the number of students.

Sam had X number of toys. He received five more for his birthday. He still has less than 24 toy cars. Which inequality correctly shows how many toy cars he might've started off with.


A. X-5 <24
B. X-5_<24
C. X+5_<24
D. X+5<24

A rectangular figure has a width of 3 feet and length of 2x + 2. Find the perimeter of
the rectangular figure

What is the missing reason in steps 7 and 8 of the proof?



Given: ∆ABC with AB = c, BC = a, AC = b
Prove: = =

Statement Reason
1. Draw a line through B that is perpendicular to and label the point of intersection with as D. construction
2. In ∆ABD, BD = c sin A definition of sine in right triangle
3. In ∆CBD, BD = a sin C definition of sine in right triangle
4. c sin A = a sin C Substitution Property of Equality
5. = dividing throughout by sin A
sin C
6. Draw a line through A that is perpendicular to and label the point of intersection with as E. construction
7. In ∆BAE, AE = c sin B
8. In ∆CAE, AE = b sin C
9. c sin B = b sin C Substitution Property of Equality
10. = dividing throughout by sin B
sin C
11. = = Transitive Property of Equality
A.
definition of cosine in right triangle
B.
definition of sine in right triangle
C.
definition of tangent in right triangle
D.
Corresponding sides of congruent triangles are equal.
E.
definition of equilateral triangle

What is an equivalent expression of -1/2(-2x+4y

Find the area (nearest tenth) please help