Mathematics High School

Question 12 (5 points)
Which of the following steps indicates the distributive property when solving - 3(x +
2) = 21?
A) -3x+ 2 = 21
B) -3x - 6 = 21
C) -3x - 6 = 63
D) -3(x-2)/-3=21/3

Answers

Answer 1

Answer: B) -3x+2=21

Step-by-step explanation:

3(x+2)=21     x = -9

-3x-6=21       x = -9

this answer is correct bc x = the same for both equations.  

Related Questions

For each babysitting job, Tamar charges $6 for bus fare plus $8 per hour. She only accepts babysitting jobs if the total charge is at least $30. What is the minimum number of hours for a babysitting job she would accept?
A 2 and one-half hours
B 3 hours
C 4 hours
D 4 and one-half hours

Answers

Answer:

B. 3 hours

Step-by-step explanation:

It’s 6+8x=30

Answer:

B) 3 hours

Step-by-step explanation:

Hope this helped <333

A card is randomly draw from a shuffled deck of cards and NOT REPLACED. A second card is drawn from the remaining shuffled cards. What is the approximate probability that both cards are RED?

Answers

The probability to draw a red card is 26 out of 52 cards, after the first card is drawn the probability of a new red card is 25 out of 51.

You have to multiply both probabilities because you want both events to happen.

P = (26x52)*(25x51)*100 = 24.5%

Solve the system of equations-5x-7y=23and 3x+4y=12 by combining the equations

Answers

Answer:

Step-by-step explanation:

32

Answer:

x=8 and y= -9

Step-by-step explanation:

(-5x-7y=23)x3

(3x+4y=-12)x5

-15x-21y=69

15x+20y=-60

-y=9

y=-9

x=8

please help,, will mark brainliest!!

Answers

Answer:

sorry thats too hard for me

Step-by-step explanation:

PLEASEEEE HELP WILL GIVE BRAINLIST

Evaluate when f(x)= 5x-1 and x+3 when x=−2.

Answers

Answer:

f(x) = -11 and -1

Step-by-step explanation:

Legit plug in -2 into both equations lol. So plug in -2 for x, and get the answer from there.

Answer:

5x3−x2−5x+1 equal to 0.

5x3−x2−5x+1=0

Step-by-step explanation:

75% of the normal price of headphones is 45$. What's the normal price?

Answers

Answer:

60$ is the normal price.

Why:

Because if 45$ is 75%, then 30$ is 50%, 15 is 25%, and 0 is 0%. 50% + 50% = 100%. (That's how I did this one, anyway. This works on any 25%, 50%, or 75% problem.)

Joaquin buys white shirts for $12 each. after he dyes and paints each shirt he plans to sell them at a 65% markup Joaquin wants to know the selling price of each shirt​

Answers

Answer:

1. 12+0.65(12)

2. 19.80

Last night, the two dinner specials at Sanjay's favorite restaurant were salmon filet and steak. The restaurant served 70 specials in all, 60% of which were salmon filets. How many salmon filets did the restaurant serve?

Answers

Answer:

42

Step-by-step explanation:

60% is 3/5 of the total, and the total is 70. 70/5 is 14, and 14 x 3 is 42.

hope this helped!

what is c=(s+b/4) solve s?

Answers

Answer:

s =c-b/4

Step-by-step explanation:

this is what i think you wanted

Roman and his friends went out to dinner at a local restaurant. His bill was $56.70. He decides to leave an 18% tip for the server. How much will Roman's total be once he adds the tip?
a-$10.20
b-$66.91
c-$74.70
d-$102.60

Answers

Answer: It would be B

Explanation: 56.70*.18= 10.20610.206+56.70= $66.906

Answer:

$66.91

Step-by-step explanation:

If you need to add 18% to the total of $56.70, then it's easier to multiply by 1.18 (118%).

$56.70 x 1.18 = $66.91

What is the volume of the cylinder
A. 725.34m
B. 1,995.7m
C. 7,978.74m
D. 15,232.14m

Answers

I’m not quite sure but do the formal PH+2B :)
B. 1,995.7m

Explanation:

A smart phone was on sale for $585. If the phone
was marked down 35%, what was the original
price of the smart phone?
Please help I ASAP will mark you brainliest

Answers

Answer:

$789.75

Step-by-step explanation:

I'm just smart

Plz help me answer this !!!

Answers

Answer:

24

Step-by-step explanation:

please hurry I need this fast

Answers

Answer:

i think

Step-by-step explanation:

4 or 1

Answer:

Step-by-step explanation:

Option 4

which graph represents -10y - 5x = -15

Answers

Answer:

use the website desmos, and type in the equation.

i'll try to explain the line to the best of my ability, it should be a downward line with a slope of 1/2

Answer:it has a slope 1/2

Step-by-step explanation:slope 1/2

What is the equation of a line that passes
through (0.5, 4.25) and (2, 18.5) and has a
y-intercept of -0.5

Answers

Answer:y=9.5x-0.5

Step-by-step explanation:

Ok, so you need to use the equation y2-y1/x2-x1 to find the slope. So (18.5-4.25)/(2-0.5) so 14.25/1.5 , calculate that and you get 9.5 which is your slope, apply that to the slope formula which is y=mx+b where (m) is slope and (b) is y intercept and you get y=9.5x-0.5

The diameter of a circle is 8 cm. Find its area in terms of \piπ. Please help!!!

Answers

Answer:

d=16

Step-by-step explanation:

d=2r=2·8=16

Last year, The tutoring center paid their tutors $40 per hour. This year, they payed them $46 per hour. What percent was the increase in pay?

Answers

Answer:

15% increase

Step-by-step explanation:

In order to solve this problem begin with finding the difference between the initial value and final value. [tex]46-40=6[/tex] then once this value is known divide it by the original value to get a decimal. [tex]\frac{6}{40}[/tex] which gives you [tex]0.15[/tex] multiplying this value by 100% will give you your answer. [tex].15 * 100 =[/tex][tex]15[/tex]%  

TLDR: the answer is 15%

Which statement is true of the following function?
f(x) = (x-7)^2 + 9

a. The vertex is in quadrant IV and the graph opens down.
b. The vertex is in quadrant IV and the graph opens up.
c. The vertex is in quadrant II and the graph opens up.
d. The vertex is in quadrant I and the graph opens up.

Answers

Answer:

a. The vertex is in quadrant IV and the graph opens down.

Step-by-step explanation:

pick me as the brainliest

How do I improve in dancing? I want to be a background dancer!

Answers

Answer: To improve your dancing, you could watch some dance tutorials, or play the game, Just Dance.

Step-by-step explanation:

You could consider taking a dance class or joining a program that deals with dancing! Work towards gaining flexibility (stretching every night) and you should definitely play just dance!!!!!!!

Sara is saving her summer earnings for a $500 school trip in the fall. She has $200 in her savings account at the beginning of June. Each week, Sara deposits $35 into her savings account. Sara wants to know how many weeks she needs to deposit her money? Which inequality would tell her this?

Answers

Answer:she will need around 9 weeks and she will have enuogh

Step-by-step explanation:

9  

Sarah bought a bike that cost $260. She had a
coupon that was worth $55 off the cost of any
bike. Use the expression 260 + (-55) to find how
much Sarah paid for her bike.
PLEASE HELP ME IM DESPIRATE

Answers

Hope this helps it shows the work meaning she paid $205

What is -8 minus blank = -2?

Answers

-(-6) is the answer so it should be -8 minus negative 6

Answer:

blank is -6

Step-by-step explanation:

-8-?=-2

+8     +8

-?=6

--- --

-1  -1

?=-6

Solve 0 = 2y - 8x + 10 for y.

Answers

Answer:

y = 4x - 5

Step-by-step explanation:

move the 2y to the left side of the equation and move the 0 to the right side of the equation in which it becomes -2y = -8x+ 10 then divide the whole equation by -2 since y cannot be negative and have a coefficient. so then the equation becomes y = 4x - 5.

I got this same 4x-5
Merry Christmas

PLEASE HELP ME I NEED ANSWER RIGHT NOS

Answers

yellow should be correct

Intro to Proportional Relationships:Question 4
Which of the following best represents a proportional
relationship?
Select one:
A restaurant sells 3 desserts for $6.00 and sells 5 desserts for
$7.00
A drone flew 50 feet in 10 seconds and flew 75 feet in 15 seconds.
John scored 8 points in 12 minutes and scored 15 points in 20
minutes
.
A bird ate 20 seeds in 30 seconds and ate 15 seeds in 20 seconds.

Answers

Answer:

the answer is A

Step-by-step explanation:

Emily attends a Film Festival. The admission fee is $10. Each movie ticket cost $5 each. Emily wants to determine how many movie tickets she can buy if she has a total of $40 before she pays the admission fee.

Answers

Answer:

Emily can buy 6 movie tickets after paying the admission fee

Step-by-step explanation:

Let x be the number of movie tickets

If each movie ticket costs 5 dollars then the cost of x movies will be 5x

And the admission fee will be a constant.

She has $40 in total

So the equation can be written as

[tex]10+5x = 40\\5x = 40-10\\5x = 30\\\frac{5x}{5} = \frac{30}{5}\\x = 6[/tex]

Hence,

Emily can buy 6 movie tickets after paying the admission fee

PLEASE HELP ASAP!!! i’ll mark brainlest

Answers

Answer:

3

Step-by-step explanation:

It owuld be 3 cuz the least significant digit would be used to determine the precision right? So it would be 3!

Lina is making a spreadsheet for an assignment. The spreadsheet, when completed, will be 191 lines long, and Lina has already completed 59 lines.

x + 59 = 191

How many lines does Lina have left to complete?
A. 250
B. 221
C. 73
D. 132

Answers

The answer is D. 132. you subtract 59 from 191 and you get 132
It’s A I hope it was helpful

fisrt second and the third terms of proportion are respectively 7 , 14 and 25 . Find its fourth term​

Answers

Answer:

Check whether the two ratios form a proportion or not: (i) 6 : 8 and 12 : 16; (ii) 24 : 28 ... 3. The first, third and fourth terms of a proportion are 12, 8 and 14 respectively. ... 5. If a : b = 4 : 5 and b : c = 6 : 7; find a : c. Solution: a : b = 4 : 5. ⇒ a/b = 4/5.

Answer:

Let the fourth term be x

7/14=25/x

7x=14*25

x=350/7

x=50

Therefore the fourth term is 50

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