Mathematics High School

plz help me i have to have this done by 5pm today

Which equation combines with the given equation to form a system of equations with the solution x = 3 and y = 9?

x + 2y = 21

Plz Help Me I Have To Have This Done By 5pm Today Which Equation Combines With The Given Equation To

Answers

Answer 1

Answer:

C it wasnt hard

Step-by-step explanation:

Related Questions

Which of the following is equal to the absolute value of −15?

Answers

Answer:

15

Step-by-step explanation:

the absolute value of -15 is 15

HELP MEEE!!!!

1) 18=2/5f

2) 27=z/0.3

/ are fraction bars i don’t know what to make fraction bars

Answers

Answer:

1. f = 45

2. z = 8.1

Step-by-step explanation:

2/5(45)=18

8.1/0.3= 27

QUESTION Lin’s father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7% sales tax is applied.
how much does lin father pay for the meal

Answers

Answer:

18.19

Step-by-step explanation:

First we must determine how much 15% of 20 is (3). Now we must subtract that from 20 (20-3=17$) Once we have that we must figure out how much 7% of 17 is ($1.19) Lastly, we must add the tax to 17.00 (17+1.19) to get 18.19.

Ms. Salazar’s car averages 25 miles per gallon of gasoline. She filled the 10-gallon tank with gasoline before traveling 200 miles on a trip. Which graph BEST represents this situation?

Answers

Step-by-step explanation:

2524 ÷ 23 = 24a6u= 7

bengek hyung

An expression is shown.
6-2 (4x - 7)
Which of the following expressions are equivalent to the given expression? Select all that apply.
O O O O O
-8 (2+1)
-8.2 + 20
4 (4x - 7)
-4(2x – 5)
16x - 28
- 82 - 8

Answers

Answer:

-8 (2+1)

16x - 28

Step-by-step explanation:

Identify the Y intercept of the the equation 5x+8y =120
O A. (0,24)
O B. (15,0)
O C. (0,15)
O D. (24,0)

Answers

Answer:

(0,15)

Step-by-step explanation:

The Y-intercept is when X=0, so plug in x=0 into the given equation. 5(0)+8y=120. Now solve for Y. 8y=120, y=15. So When x=0, y=15: this is the coordinate (0,15).

Translate this phrase into a mathematic expression: “A number less than 7”

Answers

Answer:

7 - ?

Step-by-step explanation:

Write and expression like and you should have a right answer. Hope this helps and good luck :)

Answer:

x<7

Step-by-step explanation:

Hope this helps.

what percent of 120 is 66?

Answers

Answer:

55%

Step-by-step explanation:

66

120

x 100% = 55%

Answer:

66 is 55% of 120

Step-by-step explanation:

66 = 120 * x%

percent just means out of 100

for example, 20% is equal to 20/100

so, x% is x/100

66 = 120 * x/100

66/[tex]\frac{x}{100}[/tex] = 120

66 * 100/x = 120

6600/x = 120

cross multiply

6600/x = 120/1

6600 * 1 = x * 120

6600/120 = x

x = 55

1. An interior design company needs materials for a new job. They need to purchase four doors. Each door costs $185.95. They also need to buy 10 windows that cost $148.56 each. What is the total price of the doors and windows that need to be purchased? Answer:

Answers

Answer:

[tex]\$2229.4[/tex]

Step-by-step explanation:

Cost of 1 door = [tex]\$185.95[/tex]

Total number of doors = 4

Cost of 4 doors = [tex]\$185.95\times 4=\$743.8[/tex]

Cost of 1 window = [tex]\$148.56[/tex]

Total number of windows = 10

Cost of 10 windows = [tex]\$148.56\times 10=\$1485.6[/tex]

Total price of the doors and windows that needs to be purchased is [tex]\$743.8+\$1485.6=\$2229.4[/tex].

HELP HELP PLEASE IM BEGGING YOUUU

Answers

Answer:

Area=615.75

Step-by-step explanation:

A=πr2

Seriously I have helped you twice in 5 minutes.

20 point question pls help math

Answers

its B 15 divide by 3 is 5 because 2 - 5 is -3 - 15 is 5

The Outdoor Furniture Center buys wooden benches for $50 each. The owner of the Outdoor Furniture Center sells the benches for a 120% markup. At the end of the season, the owner wants to sells all the benches that are in stock. He sells the benches for 20% off. What is the total price of a bench with the 20% discount plus a 5% sales tax?

Answers

Answer:

$76

Step-by-step explanation:

The cost of the wooden benches = $50 each.

The owner of the Outdoor Furniture Center sells the benches for a 120% markup.

200 percentage of the cost of each of the wooden benches

= (200%/100 ×50)

= $100

We were told that the owner wants to sells all the benches that are in stock. He sells the benches for 20% off discount.

Then the 20% discount will be

( 20%/100 ×100) = $20

If he gives $20 discount then he sell at $80. That is ( $100-$20)

He also give a 5% sales tax

5% of $80 = (0.05×80)= $4

Then total cost = $80-$4)

= $76

Answer: $76

Step-by-step explanation:

please help!!✨✨✨ this is due soon!!!!

Answers

Answer:

da

Step-by-step explanation:

Answer: I believe it's / option 3: 6 gallons of white paint.

Plis help me plis! I need help with this

Answers

T=PV/K

Starting with V=KT/P, multiply P on both sides to get PV=KT

Then divide K on both sides to leave T alone

And you get.....T =PV/K

Answer:

The light blue/greenish one that says T=PV/K or Greeland

Step-by-step explanation:

We can make the equation more simplier by multiplying both sides by P to remove fractions.

It would become VP=KT

The only answer with VP or PV is B, or the T=PV/K

also, to isolate T, divide the VP=KT by K on both sides to isolate T.

VP/K=T

Your soul is an appalling dump heap overflowing with the most disgraceful
Assortment of deplorable rubbish imaginable mangled up in tangled up knots!


Find figurative language

Answers

Answer:

Assortment of deplorable rubbish imaginable

Step-by-step explanation:

Plsss help ASAP I DONT have time..

Answers

Answer:

6.7

Step-by-step explanation:

20.5-8=12.5 so

14.7-8=6.7

Ronnie charges his customers a flat fee of $25 to fix a computer. Then, he charges $30 for each hour he spends working on the computer. If his first job cost $175, how many hours did he spend working?

Answers

Answer:

Ronnie spent 5 hours working.

Step-by-step explanation:

From the information given, the total cost of the job is equal to the flat fee plus the result of multiplying the cost per hour for the number of hours which is:

c=25+30x, where:

c is the total cost of the job

x is the number of hours

Now, you can replace c with 175 and solve for x:

175=25+30x

175-25=30x

150=30x

x=150/30

x=5

According to this, the answer is that Ronnie spent 5 hours working.

Answer:

7.5

Step-by-step explanation:

Ronnie charges $25 plus $20 per hour. This means that he made the following depending on how many hours he spent on it:

Hours        Dollars

0                 25 = 25 + 0(20)=25

1                  25+20 = 25 + 1(20)=45

2                  25+20+20 = 25 +2 (20)=65

3                  25+20+20+20 = 25 +3 (20)=85

4                  25+20+20+20+20 = 25 +4 (20)=105

5                  25+20+20+20+20+20 = 25 +5 (20)=125

......

n                  25+n(20)=175

To find how many hours he worked for $175 we solve the equation using inverse operations:

25+n(20)=175

25-25+n(20)=175-25

n(20)=150

n= 7.5 hours

The manager at the mall is buying candy canes to decorate the 15 trees in the mall. She wants each tree to have 24 candy canes. How many candy canes should she purchase?

Answers

Answer:

she will need to buy 360 candy canes :>

merry christmas! and brainliest pls i needit and i hate to beg

Step-by-step explanation:

Answer: The answer is 360

Step-by-step explanation: 15 x 24 = 360

PLEASE HELP!! SOLVE FOR X!!!
ANSWER OPTIONS:
0
6
9
3

Answers

Answer:

I think it's 6 sry if I'm wrong

Step-by-step explanation:

Help please due in. 20 minutes

Answers

Answer:

B is a solution, A and C are not

Step-by-step explanation:

Answer: (1,5) = No

(0,7) = yes

(-3,-6) no

Step-by-step explanation:

(1,5) is outside the double shaded region and (-3,-6) is on the dash lined therefore its ruled outside as well

$12,000 at 2.2% for 5 years.
what’s the interest?

Answers

Answer:

264.

Step-by-step explanation:

12,000X2.2%=264.

i need help with this question ASAP

Answers

2x +12 is ur answer bc

y=2x+b
You need to find the y-intercept
So plug in the point
8=2(-2)+b
8=-4+b
+4 both sides
b=12
Therefore, y=2x+12

what is a -210 Divided by 14

Answers

Answer:

-15

Step-by-step explanation:

Well you cleary just divide the numbers But if you dont belive it use a caculator for this

-210 divided by 14 equals -15.

To divide -210 by 14, we set up the division equation: -210 ÷ 14.

Since we have a negative dividend, we know the quotient will also be negative.

We divide the absolute values of the numbers: 210 divided by 14, which equals 15.

Since the dividend and divisor have different signs, the quotient is negative.

Therefore, -210 divided by 14 equals -15.

This means that -210 can be evenly divided into 14 groups, each having a value of -15.

The negative sign indicates that the result is in the opposite direction or orientation compared to the positive value.

Learn more about division here

http://brainly.com/question/231633

#SPJ6

Convert 90% to a decimal and round to the nearest thousandth place

Answers

Answer: .9

Step-by-step explanation:

You divide by 100 and get .9

Answer:

90% = 0.900

Step-by-step explanation:

the basic rule of thumb for conversions of percentages into decimals is to place the period two spaces to the right of the first number in the percentage.

Cna anyone help with this one for me? I’ll give 5 stars

Answers

Answer:

D

Step-by-step explanation:

The answer would be C 3d + 8 is less than or equal to 35.

The tank holds no more than 35, so there can be 35 fish in the tank so it can be equal to 35.

there is already 8 fish from the old aquarium and there are 3 new fish per day so the 3 gets the variable

I'm desperate, and need help, this stuff has me stuck​

Answers

Answer:

its C

Step-by-step explanation:

what is the value of k + 12, if k=6?

Answers

18
literally you do 6+12

Answer:

18

Step-by-step explanation:

If k = 6, the equation would be 6 + 12, which is equal to 18.

In the expression 2a-5+4a-9, name the constants​

Answers

Answer:

-5 and -9 are the constants, can also be written -14

Determine the slope of each line.
1.
ТУ
2.
8
ty
8
115,7)
4
(6,5)
4
Х
0
-4
-8
0
-8
4 8
(
2-2)
4
-
-4, -3)
-8
S

Answers

Answer:

The slope of the given line is -4

Step-by-step explanation:

The formula of the slope of a line passes through points (x1, y1) and (x2, y2) is m = [tex]\frac{y2-y1}{x2-x1}[/tex]

In the given figure

∵ The line passes through the points (-6, 5) and (-4, -3)

∴ x1 = -6 and y1 = 5

∴ x2 = -4 and y2 = -3

→ Substitute them in the formula of the slope above

∵ m = [tex]\frac{-3-5}{-4--6}[/tex]

∴ m = [tex]\frac{-8}{-4+6}[/tex]

∴ m = [tex]\frac{-8}{2}[/tex]

∴ m = -4

∴ The slope of the given line is -4

a can holds 2 liters of paint.

then how many can we fill with 11 liters of paint​

Answers

Answer:

5 and a half

Step-by-step explanation:

Because you can fit 2 liters in each can, to find how many you would need, divide 11 by 2, this would give you 5 and a half, 5.5.

It could be that they want you to round up to six or round down to five, so do consider that.

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