please help me with this math

Answer:

Step-by-step explanation:

Subtract 7 from both sides.

We have:

-3z-4z=21

So:

-7z=21

21/-7 = -3

The answer is C.

Which situation can be represented by this equation ?

120 + 4X = 280 - 6X

A. Jesus earned 124 points each hour playing Minecraft. Maria earned 274
points each hour playing Minecraft. What is X, the number of hours that
Jesus and Maria would have to play in order to have an equal number of
points?

B. Jesus started a savings account with $120 and spends $4 from his
savings account every week. Maria started a savings account with $280
and adds $6 to her savings account every week. What is X, the number
of weeks that need to pass in order for Jesus and Maria to have the
same amount of savings?

C. Jesus started with 120 marbles he gives 6 marbles away to his friends
daily. Maria started with 280 marbles and her friends give her 4 new
marbles each day. What is X, the number of days it will take Jesus and
Maria to have the same number of marbles?

D. Jesus has a bag of money that originally contained $120 and is being
filled at a rate of $4 per minute, Maria has a bag that originally
contained $280 and is being spent at rate of $6 per minute. What is X,
the number of minutes that both bags will contain the same amount of
money?

neeed help in math pleaseee

A computer that cost 1099 last year costs 999 this year. ​ ​What is the percent of change in price rounded to the nearest tenth?

What's the error? Explain.
Jamal said that the answer to the
following problem was x = 0
5(3x - 2) = 10x - 2 + 5x

find the unknown side length x right here answer in simplest radical form
A.2√41
B.4√29
C.48
D.58​

RQPO is a trapezoid. What is the value of x?

2

63°

(6x + 9°

R

4*9x4*3 whats the answer

Please help if you want BRIANLEIST!!!

An arborist examined trees in an orchard to see if they were infected with a virus. Out kf 75 trees , 80% had the virus. How many trees were infected with the virus?

A bicycle has a listed price of $551.99 before tax. If the sales tax rate is 9.25% , find the total cost of the bicycle with sales tax included.

Which associations best describe the scatter plot?

Select each correct answer.


Positive association

Linear association

Negative association

Nonlinear association

Scatter plot on a first quadrant coordinate grid. The horizontal axis is labeled Time, in years. The vertical axis is labeled Number infected. Points are plotted at (one, one hundred), (two, ninety), (three, seventy-five), (four, sixty), (five, forty-five), (six, twenty-five), (seven, fifteen), (eight, five), (nine, zero).

When 89.325 is divided by a certain number, it becomes 8.9325. What is the number?

solve this
1) 20+ -5
2) 63 - 56 + (40)​

find x=, if x-8=19 now!!!

19x + 2y = 10
y-intercept =
Submit

please help me

For problems 8-10, find the measures of the unknown third angles.​

mcpss.schoology.com/common-assessment-delivery/start/4599146874?action=onresume&submissionid=417011435
Midpoint and Distance Test
A line in the standard (x,y) coordinate plane contains the points C (0,7) and D (4,-6). What is the
midpoint of CD?
O (2,3)
O (4,2)
O (2, 1/2)
O (7.7)
I don’t understand

PLEASE HELP. YOU WILL BE MARKED BRAINLIEST IF ANSWER CORRECTLY!!!! :)
Young Jedi Kelkin Soerre was in the middle of intense lightsaber training. So far she had blocked 34 laser blasts with her lightsaber out of 43 tries. How many consecutive laser blasts must she block successfully in order to raise her success rate to 84%? Round your answer to the nearest whole blast.

Select all of the choices that are equal to -5 - (-12) and
explain your choices.
a.) -7
b.) 7
ns
c.) The difference between -5 and -12.
lucation
d.) The difference between -12 and -5.
e.) (-5) + 12
f.) (-5) + (-12)
Can someone please help me?

hello my name jeff. i like pizza

HAIRCUT Josiah went to the local
barber to get his hair cut. It cost
$18 for the haircut. Josiah tipped
the barber 15%. What was the total
cost of the haircut including the
tip?

When solving the equation, which is the best first step to begin to simplify the equation?
-2(x+3) = -10
02-2)(x+2) = -106-2)
$(-2)(x+ 3) --10-31
o-(x+3) = -10

A triangle has sides represented by 7, x, and x−1. If the perimeter is 28, find the length of the longest side.

which is largest 4.12 or 4.21

What is the solution?

work out size of angle marked Y

PLZ HELP its only one problem and the instructions are on the screenshot

Isaiah is working yo buy a new bicycle. He is wanting a HARO bike because he has dreams of being on the x-games. The bike he has his eye on is $719.99. He has saved his money up and already has $125 to go towards his bike. He is going to mow grass to make his money. He has decided he is going to charge $25 per yard. a.) Write an equation that mimics the given situation b.) How many yards will Isaiah have to mow in order to buy the bike? ​

Tasha went golfing. Tasha hit the ball 220 yards down the fairway and then 165 yards to the hole. What would have been the shortest distance had she just hit the ball from the tee area to the hole?

Type the correct answer in each blank. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Charlie runs a book rental business. He currently charges $3 per book and rents out an average of 38 books a day.

According to a study, for every 50¢ increase in rental price, the average business can expect to lose 4 rentals a day.

Complete the equation that models this scenario, where b(x) is the revenue generated and x is the number of 50¢ price increases.

b(x) = -____x2 + ____x + _____