solve the solution of the equations 10x-3y=3 and 2x+y=9

Answers

Answer 1

Answer:

x=1.875   y=-0.875

Step-by-step explanation:

10x-3y=3                     10x-3y=3

3(2x+y)=(9)3                +6x+3y=27

                               1/16(16x)=(30)1/16  = x=1.875

   10x-3y=3                  10x-3y=3

 -5(2x+y)=(9)-5           -10x-5y=4                          

                                    1/-8(-8y)=(7)1/-8 = y=-0.875


Related Questions

guys please help me with this serous question

Answers

Answer:

Step-by-step explanation:

$1 times 5 equals $5

$30-$5= $25

$25 divide by each 5 friends equals $5. So your answer is $5

Simplify:

3(8) 0 • (3) –2

Answers

Answer:

-2

Step-by-step explanation:

!&÷×\÷\*÷*=*=*3*÷*÷*÷8÷*8

The simplification of the given expression is -2.

What are equivalent expressions?

Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.

To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.

We are given the expression as;

3(8) 0 • (3) –2

We need to simiplify this expression;

3(8) 0 • (3) –2

24(0) . 3 - 2

0-2

-2

Therefore, the simplification of the given expression is -2.

Learn more about expression here;

https://brainly.com/question/14083225

#SPJ2

eye blue like the Atlantic and im going down like the Titanic​

Answers

Answer:

how is this a question

Step-by-step explanation:

Answer:hvcfhcxfdhkhfhxkzi love that song:o :D Have a great day!!

Parker grew
2 1/2 inches each year for the past 3 years. How many inches total has Parker grown in the past 3
years?

Answers

Answer:

it will be 7 and 1/2

Step-by-step explanation:

2 and 1/2 x 3=7 and 1/2

Someone help plzzzzz

Answers

Answer:

for the first box the answer is 4x but I dont know the y intercept

Step-by-step explanation:

get 2 points the do y2-y1/x2-x1 then you get your x

A waiter earned a 7% tip. What decimal is equivalent to 7%?
Record your answer and fill in the bubbles on your answer document. Be sure to use the
correct place value.

Answers

7% in decimal form is 0.07

Which expression has a value different from the others?
A. -108 + 105
B. 9.9 + (12.9)
C. -7 2/9 - ( -4 2/9)
D. 637 - 641

Answers

Answer:

I think B

Step-by-step explanation:

A. -108+105

-3

B. 9.9+(12.9)

22.8

C. -7 2/9 -(-4 2/9)

-3

D. 637 - 641

-4

Is the last one written wrong because if that one is 637-640 or 638-641 than it would equal -3. Then the answer would be B.

Simplify the following expression: -4(k - 7)

Answers

Answer:

-4k+28

Step-by-step explanation:

Answer:

-4k+28

Step-by-step explanation:

multiply -4k inside the parentheses

-4k x k

-4 x 7

= -4k+28

2x -3 = -7 please help

Answers

Answer:

2x - 3 = -7 (add 3 to both sides)

2x = -4 (divide each side by 2 to get x alone)

x = -2

Translate the sentence into an equation. Four less than a number is 17. Which equation is correct?
x - 17 = 4
X - 4 = 17
x + 4 = 17
x + 17 = 4​

Answers

Your answer would be x-4=17.
4 less than (#) is 17.

That number would be 21.

21-4=17

Hope that helps

Answer:

b

Step-by-step explanation:

A boy weighs x pounds. His younger sister weighs 53 pounds less than him. His father weighs four times as much as his sister. A simplified expression that represents the fathers weight (in pounds) is (blank -blank)

Answers

Answer:

4x-53

Step-by-step explanation:

Boy=x

sis = x-53

father = 4x-53

Find the area of the trapezoid below.
4 cm
3 cm
8 cm

Answers

Answer:

4 + 8 / 2 * 3 = 18

4 + 8 = 12

12 / 2 = 6

6 * 3 = 18

Step-by-step explanation:

*Hope this helps*

The WHS Football team is trying to raise money to buy new equipment so the players are selling wacko cards for $20 each if the football team needs to raise at least $3000 for equipment right any quality to represent the situation and find the least number of wacko cards the team must sale

Answers

Answer:

150

Step-by-step explanation:

3000/20

150.

$$$$$$$$$$$$$$$$$

I NEED THIS ASAP I HAVE TROUBLE WITH IT PLEASEEEEEEEEEEE!!!!!!!!
WORTH 25 POINTS !!!!!!!!!
SHOW ALL WORK FOR EXTRA POINTS PLSSSSSSS!!!!!!!

Mr . williams has a piece of rope that is 22.5 meters long . he wants to cut it into
pieces that are 1.25 meter long . how many pieces of rope will he have?

Answers

Answer:

He can make 18 pieces. Observe:

22.5/1.25=18

Step-by-step explanation:

Answer:

18 pieces

Step-by-step explanation:

22.5/1.25=18

Hope this helps :)

Melissa’s family is driving out of state to her grandmother’s house. They know that it takes 20 gallons of gas to get there, and the cost of three gallons of gasoline is $10.50. How much should the family budget to make the one-way trip?

Answers

Answer:  20/3 * $10.50 = &73.5

.

HOPE THIS HELPS TOUCH THANKS PLEASE

Step-by-step explanation:

Answer:

73.5$

Step-by-step explanation:

21/7=3 so 10.50*7 will give the budget

[tex]2s+5\geq 49[/tex]

Answers

Answer:

s≥22

Step-by-step explanation:

49-5

2s≥44

divide both sides of the inequality by 2

so 2s≥44 then turn into s≥22

Marcus is a car salesman and he earned an 8% commission on his monthly sales last month his sales total was $95,342 how much commission was he paid

Answers

Answer:

7627.36

Step-by-step explanation:

95342 * 8% = 7627.36

Answer:

Marcus earns 15% commission on his total sales at work.

Suppose Marcus's sales totaled $725 last week. How much did he earn in commission?

A.

$833.75

B.

$616.25

C.

$108.75

D.

$10.88

Step-by-step explanation:

Which set of number includes only intergers

Answers

D because it doesn’t contain any fractions or decimals. Only negative and positive whole numbers

Answer:

{-10, -7, 0, 98, 145}

Step-by-step explanation:

An integer is whole numbers and their opposites, doesn't have to be written as a fraction.

{-3, 0, 5/6, 5, 45} 5/6 is not an integer{-9, -3, 0, 5.7, 7.8} 5.7 and 7.8 are not an integer{-3, -2 4/5, 5, 7, 53} 2 4/5 is not an integer{-10, -7, 0, 98, 145} all are integers.

PLEASEEEEE HELLLPPP MEEE

Answers

Answer:

100

Step-by-step explanation:

Find x
13x+5)
(6x – 14)°
y + 8)

Answers

Answer:

X=21

Step-by-step explanation:

3x+5+6x-14=180

9x-9=180

9x=180+9

9x=189

x=21

The answer is 21 :)

Round 23.546 to the nearest tenth and the nearest hundredth. Explain your thinking.

Answers

Answer:

nearest tenth is 23.5

nearest hundredth is 23.55

Step-by-step explanation:any number more than 5 is rounded up to +1 for the next number so for tenth 23.546= 23.5 and for hundredth 23.546=23.55

In triangle ABC, angle BAC = 90
Work out the size of angle DAC AND DCA?

Quick plz:)

Answers

Answer:

Easy man it 9999

Step-by-step explanation:

Find the exact value of cos(a-b) given sin(a)=-4/5 and cos(b)=-5/8 for a in Quadrant III and B in Quadrant II.

See picture for answer choices.

Answers

Answer: B

Step-by-step explanation:

y + 2 = -3(x - 4). What is the slope?

Answers

Answer:

m=-3

Step-by-step explanation:

Evaluate and solve for the variable

7=5b

Answers

B would equal 1 and 2/5

Can you help me please

Answers

Answer:

f(-4)=3(4)^2-5(4)

16*3-20

48-20

f(-4)=28

Last week Len spent $18 to bowl 4 games. This week he spent $27 to bowl 6 games. Len owns his bowling ball and shoes, so he only has to pay for each game that he bowls. If each of these bowling games costs the same amount of money, what is the constant of proportionality between the money spent and the number of games played?

Answers

Answer:

$4.50/ g - Games

Step-by-step explanation:

$18

-------------  =  $4.50/g

4 g

$27

------- = $4.50/g

 6 g

C(x) = ($4.50/game)x, where x is the # of games played.

Match each equation to the situation it represents
1st one says Leilah
2nd one says Stetson​

Answers

Answer:

leiah has not yet studied......          =    2400 - 40x = 600

stetson rests studios spaces......   =    40x - 600 = 2400

a kit contains....                               =.    (600 + 40) x = 2400

Step-by-step explanation:

that might make it a bit easier

need help with this problem it’s math so if you know math come on in

Answers

Answer:

The line is super close to 15 or 20. So one of those for sure

Step-by-step explanation:

Answer: its got to be 15 because the line isn't on 20

Step-by-step explanation:

9. Solve each equation.
(1 Point)
-16 = 0.26

a.) b = -71
b.) b = -80
c.) b = -83
d.) b = -74

Answers

It would be b; 80 because 0.2 times -80 is -16

Answer:

b = -80

Step-by-step explanation:

-16 = 0.2b

-16/0.2 = b

-80 = b

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