x+2y-z = 9
-2x+y+z= 1
2x-y+2z= -5

Answers

Answer 1

Answer:

I don't understand the first one


Related Questions

Write the algebraic notation for dilation with a scale factor of ½

Answers

Answer:  (x, y) goes to (1/2x, 1/2y)

Step-by-step explanation:

How do i find lines AC, BD, and EC?

Answers

Answer:

All equal 11

AC=11

BD=11

EC=11

Step-by-step explanation:

The shape is a square and all sides of a square have the same length. The marks ‘II’ means that they are all parallel.

Is the ratio 4 to 7 the same as 7 to 4 ?

Answers

Answer:

uhhhhh Expressed as a fraction, with the numerator equal to the first quantity and the denominator equal to the second, the answer would be 7/4. Two other ways of writing the ratio are 7 to 4, and 7:4.

Step-by-step explanation:

just math

Answer:

Yes because it doesn´t matter how you write a ratio

Step-by-step explanation:

Because it doesn´t matter how you write a ratio

Which table represents a linear function?

Answers

Answer:

The third graph

Step-by-step explanation:

When using slope, all of them need to be constant. TO be linear.

please help!! thank you

Answers

Answer:

28/15

Step-by-step explanation:

17/5 x 2/3 28/15

Answer:

The answer is 34/15

Step-by-step explanation:

Convert the mixed number to an improper fraction - 17/5Then multiple 17/5 and 2/3 and you get 34/15

If you don't know how to change mixed numbers you multiple the denominator and the number on the outside. After you get the answer you add the numerator to the sum.

Find the values of the variables :)

Answers

Answer:

x = 6 , y = 4 , 2 units

Step-by-step explanation:

2y - 6 = y - 2 ⇒ y = 4

3x - 16 = y - 2

3x - 16 = 4 - 2

3x = 18 ⇒ x = 6

Length of sides of square is 2 units

What is y? (look at the picture I attached, thank you!)

Answers

Answer:

[tex]y = \frac{19}{5} [/tex]

Step-by-step explanation:

[tex] \frac{2y - 4}{y + 7} = \frac{1}{3} [/tex]

or, 3(2y-4) = 1(y+7)

or, 6y-12 = y +7

or, 6y-y = 7+12

or, 5y = 19

or, y = 19/5

Answer:

y=19/5

Step-by-step explanation:

Hope this helps!

One out of 3 gym members say they spent 5 hours per week at the gym. If there are 150 people working out at the gym, how many will most likely spend 5 hours at the gym this week?

Answers

Answer: 50

Step-by-step explanation:

From the question, we are informed that 1/3 of gym members say they spent 5 hours per week at the gym.

Assuming there are 150 people working out at the gym, the number of people that'll most likely spend 5 hours at the gym this week will be calculated by multiplying 1/3 by 150. This will be:

= 1/3 × 150

= 50 people

The sum of the two shorter sides of a triangle must be greater than the longer side. the shorter side of a triangle is 8 inches and the longest side is 18 inches. how long must the third side of a triangle be?

Answers

Anything above 10 inches I believe

Please help ! Super easy

Answers

Answer:

I am not certain but I think division

Answer:

I think you use division to get rid of them.

Step-by-step explanation:

Hope this helps

Please help i need submit it in 10 mins! show work! i will mark brainliest!

Answers

Answer:

C and D is the answer.

Step-by-step explanation:

If m∠5 = x°, according to the Corresponding Angle Theorem, m∠9 will equal the same, and because 9 and 12 are vertical angles, both of these will be the same measure.

A store has clearance items that have been marked down by 45%. They are having a sale, advertising an additional 35% off clearance items. What percent of the original price do you end up paying?

Answers

Answer:

35.75%

Step-by-step explanation:

Given that:

Markdown % = 45%

Additional percentage off = 35%

45% markdown :

100% - 45% = 55% of item price will be paid.

Furthermore,

35% additional discount :

100% - 35% = 65% of item price will be paid

Hence, percentage of original price paid:

(55% * 65%) = 0.3575

= 35.75% of the original price is paid

Estimate 8 x 342 Jehhdhd

Answers

Answer:

2,736

Step-by-step explanation:

The formula for the volume of a cylinder is V = arh.
Solve v = 12h for h, the height of the cylinder.


Answers

Answer:

A

Step-by-step explanation:

You would divide it by pie r squared to get h then flip the equation around so it would be

h= v/ pie r squared

Answer:

A) H= V/ π r^2

Explanation

V = π r^2 H

V = π × r × r × H

V/ π r^2 = H

H = V/π r^2

Solve.
4 - 2x = 10
A)-7
B)-3
C)0
D)3

Answers

Answer: The answer should be B) -3. To solve the equation you have to rewrite the equation.

help me slove this---------​

Answers

Answer:

x = 48 degrees

Step-by-step explanation:

Total internal angles:

180 degrees * 3

= 540 degrees

540-105-102-93

= 240

240 = 5x

x = 48

PLS GIVE BRAINLIEST

Answer:

2x = 96º

3x = 144º

Step-by-step explanation:

sum of all angles ina pentagon is 540, so:

2x+3x+105+93+102 = 540

5x+ 300 = 540

5x = 540-300

5x = 240

x = 240/5

x = 48

3x = 48.3

3x = 144

2x = 48.2

2x = 96

proof:

105+93+102+144+96 = 540

77 is 56% of what number

Answers

Answer:

137.50

Step-by-step explanation:

please give branliest

Answer:

137.5 I think I might be wrong..

(SHOW YOUR WORK) 67.5+23.57

Answers

67.5 + 23.57=
91.07

[tex] \: \: 67.5 \\ + \underline{23.57} \\ \: \: \: \: \green{\boxed{ 91.07}}[/tex]

At the beginning of spring, Samantha planted a small sunflower in her backyard. When it was first planted, the sunflower was 20 inches tall. The sunflower then began to grow at a rate of 1 inch per week. How tall would the sunflower be after 4 weeks? How tall would the sunflower be after w weeks?

Answers

Answer:

24 inches

Step-by-step explanation:

[tex](-4)(-2)-6(2-5)[/tex]

Answers

Answer:

26

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define expression

(-4)(-2) - 6(2 - 5)

Step 2: Evaluate

Parenthesis (Subtract):                    (-4)(-2) - 6(-3)Multiply:                                            8 + 18Add:                                                  26

24xy-10y-18x from 13xy+12y+14x with explanation

Answers

Answer:

24xy+2y−234x​2fromy+14x

Step-by-step explanation:

24xy−10y−(18×13)xxfromy+12y+14x

24xy−10y−234xxfromy+12y+14x

24xy−10y−234x​2fromy+12y+14x

24xy+(−10y+12y)−234x​2fromy+14x

16+(18+10)=(x+18)+10

Answers

16 + 18 + 10 = 44
44 = x + 28
16 = x
x = 16

Answer: x=16

Step-by-step explanation: 16 + 18 + 10 = 44

                                             44 = x + 28

                                                16 = x

Carson just lit a new candle and then let it burn all the way down to nothing. The
candle burned at a rate of 1.25 inches per hour and its initial length was 10 inches.
Make a table of values and then write an equation for L, in terms of t, representing
the length of the candle remaining unburned, in inches, t hours after the candle was
lit.
Number of Hours Burning Length of Candle Remaining (Inches)
0
10
1
1
2
3

Answers

Answer:

Step-by-step explanation:

L = 10 - 1.25t

t = 1 ⇒ L = 10 - 1.25 = 8.75 inches

t = 2 ⇒ L = 10 - 1.25(2) = 7.5 inches

t = 3 ⇒ L = 10 - 1.25(3) = 6.25 inches

Jade borrowed $5,000 from a bank to buy a car. She will pay back the loan in 3 years with simple interest, at an interest rate of 18% per year. What is the total amount that she will pay after 3 years?


pls i will give brainly

Answers

Answer:

$2,700

Step-by-step explanation:

Step-by-step explanation:

borrowed amount -$5000

interest rates -18% per year(3 years interval)

18/100 × 5000/1 =

90000/100=900

900×3=

2700

I.e in 3yrs she will pay

5000+2700=$7700

Determine if each quotient is correct.
Choose true or false for each equation.

A. -4 ÷ 1 = -4 true or false

B. -6 ÷ (-2) = -3 true or false

C. -7 ÷ (-7) = 1 true or false

D. 10 ÷ (-5) = 2 true or false

Answers

A. True
B. False, correct answer +3
C. True
D. False, correct answer is -2

Find the area of the square.
3
3-m
m2
Help please ASAP

Answers

Answer:

7 is the answer hope it will help you

Answer:

l = 12.25 m²

Step-by-step explanation:

Here, l = 3½ m = 3.5m

∴ Now, The area of a square is

= l²

= (3.5)² m

= 12.25 m²

Thus, The area of a square is 12.25 m²

-TheUnknownScientist

What is 3w=6
W=
Pls help

Answers

Answer:

The answer is 2.

Step-by-step explanation:

hope that helps

3w=6

divide by 3 both side

3w÷3=6÷3

W=2

Please help its 7to10 please as fast as possible I wanna sleep

Answers

Answer:

7. 2b and b are like terms, [tex]b^{6}[/tex] and 3[tex]b^{6}[/tex] are like terms

8. 6 and 7 are like terms, 2n and [tex]\frac{n}{4}[/tex] are like terms

9. m and 2m are like terms, 3³ and 2 are like terms

10. 6³ and 6² are like terms, y³ and 5y³ are like terms

Step-by-step explanation:

The like terms are the terms that have the same variable with the same powerAll numerical rational terms are like termsThe numerical terms with the same radical are like terms  

Let us solve from No. 7 to No. 10

#7

∵ The terms are 2b, [tex]b^{6}[/tex], b, [tex]x^{4}[/tex], 3[tex]b^{6}[/tex], 2x²

∵ 2b and b have the same variable and the same power

2b and b are like terms

∵ [tex]b^{6}[/tex] and 3[tex]b^{6}[/tex] have same variable b and same power 6

[tex]b^{6}[/tex] and 3[tex]b^{6}[/tex] are like terms

#8

∵ The terms are 6, 2n, 3n², 6m², [tex]\frac{n}{4}[/tex], 7

∵ 6 and 7 are numerical rational terms

6 and 7 are like terms

∵ 2n and [tex]\frac{n}{4}[/tex] have the same variable and the same power

2n and [tex]\frac{n}{4}[/tex] are like terms

#9

∵ The terms are 10k², m, 3³, [tex]\frac{p}{6}[/tex], 2m, 2

∵ m and 3m have the same variable and the same power

m and 2m are like terms

∵ 3³ and 2 are numerical rational terms

3³ and 2 are like terms

#10

∵ The terms are 6³, y³, 3y², 6², y, 5y³

∵ 6³ and 6² are numerical rational terms

6³ and 6² are like terms

∵ y³ and 5y³ have the same variable and the same power

y³ and 5y³ are like terms

Find the LCM of 3, 5, and 20.
Plz help

Answers

Answer:

60

Step-by-step explanation:

3×20 is 60, and it works with 5, and it is the smallest possible Multiple

Answer:

60

Step-by-step explanation:

Find the prime factorization of each number:

3 = 3

5 = 5

20 = 2^2 * 5

LCM = product of common factors with greatest exponent and non-common factors.

LCM = 3 * 5 * 2^2 = 15 * 4 = 60

Omar wants to purchase a new bicycle for $134.45 and helmet for $22.55.
If the sales tax rate is 8%, what will be the total amount of sales tax?

Answers

Answer:

12.56

Step-by-step explanation:

143.45+22.55=157.00

157×.08= 12.56

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