Find the solution of the system of equations

15x – 10y = -30
5x – 9y = 7

Answers

Answer 1
Answer: x=-4, y=-3

Explanation: We can use the elimination method to make two of the variables cancel out.

For the second question, we can multiply everything by -3 to get -15x+27=-21, where 15x and -15x will cancel out.

Adding the remaining equations will give us 17y=-51 and solving for y gives us y=-3.

If we plug -3 in for y in the 2nd original equation, we get 5x+27=-4, where solving for x will give us x=-4

Related Questions

Write yes or no in the space provided below:
Can the sides of a triangle have lengths 2, 3, and 5?

Answers

Answer:

No

Step-by-step explanation:

Triangle Inequality Theorem. The sum of the lengths of any two sides of a triangle is greater than the length of the third side.

MK is the segment bisector of RS Find the length of RS.

The length of RS is?

Answers

Answer:

m(RS) = 34

Step-by-step explanation:

Since, MK is the segment bisector of RS.

Therefore, segment MK will bisect RS in two equal segments RM and MS.

RM ≅ MS

m(RM) = m(SM) = 17

m(RM) + m(SM) = m(RS)

m(RS) = 17 + 17

m(RS) = 34

......... HELP PLEASE

Answers

Answer:

0.4 I'm sorry if it wrong

Georgia works at the frozen yogurt shop. She is able to scoop frozen yogurt into perfectly round scoops tha
have a radius of 6cm. If Mary buys a single scoop of frozen yogurt in a cup. How much yogurt Will Georgia
Mary?
senere

Answers

Answer:

My answers:

1. p = 0.20 × 100 × k

4. y = 1.25x + 3; $8.00

Step-by-step explanation:

your welcome

Help please.[tex]x^{2}[/tex]

Answers

Answer:

r = 8 cm

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

50.24 = 2 * (3.14) *r

50.24 = 6.28r

Divide each side by 6.28

50.24/6.28 = r

8 =r

write 5 less than b as expression​

Answers

see do you see this choice is should be X-5

Ethan has 18 cartons of yogurt in a fridge, of which 6 were blueberry 3 were strawberry and 9 were orange cream. What is the probability that Ethan grabs a blueberry yogurt first, changes his mind puts it back and then grabs an orange cream yogurt?

Answers

Answer:

54/324

Step-by-step explanation:

Multiply probability of first event (6/18) by probability of second (9/18), you can then simplify if you need to to 1/6 or leave it as 54/324

MODELING REAL LIFE The table shows the amount y (in fluid Ounces) of carpet cleaner in a tank after x minutes of cleaning.
X
у
5 108
10 88
15 68
a. Write an equation that represents the amount of cleaner in the tank after x minutes.
y = - Ix + 128
b. How much cleaner is in the tank when the cleaning begins?
There are
fluid Ounces of cleaner in the tank.
C. After how many minutes is the tank empty?

Answers

Modelling in real life 10 =c +r

The tank will be empty in 32 minutes.

What is the point-slope form of a line?

If m is the slope of the line that passes through the point (x₁, y₁), then the equation of the line is y - y₁ = m (x - x₁).

(a)

The table of values is given.

Rewrite the table of values as ordered pairs:

(5,108), (10,88), (15,68)

Since the difference between any two consecutive y values and the difference between any two consecutive x values is constant, the data shows a linear relation.

The slope of the line that passes through (5,108) and (10,88) is:

m = (88-108)/(10-5)

m = -4

The equation of the line with slope m = -4 and passes through (5,108) is:

y - 108 = -4(x - 5)

y = -4x + 20 + 108

y = -4x + 128        (1)

(b)

Substitute x = 0into equation (1):

y = - 4(0) + 128

y = 128

The tank is 128 ounces cleaner at the beginning.

(c)

Substitute y = 0 into equation (1):

0 = -4x + 128

4x  = 128

x = 32

Therefore, the tank will be empty in 32 minutes.

Learn more about the point-slope form of a line:

https://brainly.com/question/29503162

#SPJ2

Solve the equations -5(x + 3) = 25. Write the problem on the sketch pad then solve the problem algebraically. I need the answer and how you work it out :)

Answers

Answer: x = -8

Step-by-step explanation: First distribute the -5 to the parenthatese, so multiply -5 by x and 3 to get -5x-15=25. Then add 15 to each side to end up with -5x=40. Then divide each side by -5 to get x = -8

What is the zero g(x)=-x-7?

A.7
B.3
C.-7
D.4

Answers

What is the zero g(c)=-x-7 is going to be C.-7

Guys help plz I’m giving Brainliest.

Answers

Answer:

$21.60

Step-by-step explanation:

Answer:

The hat originally without the discount would be 19 or 20 dollars 20.00

Step-by-step explanation:

clara bought a necklace at the jewelry store the necklace cost 5$ of clara spent 12$ in total how much did the bracelet cost?

Answers

Answer:

7

Step-by-step explanation:

they asked how much the braclet cost, but they stated it in the question that the neckelss cost 5 dollers anr she has 12. so in you subtract 5 from 12 you get 7.

$7?
Cuz subtract $12 from $5 it’s $7

Math help please
Show work if possible

Answers

Answer:

a) t = -7

b) f = 12

c) k = -13

Step-by-step explanation:

a) t + 11 = 4

t = -7

b) f = 8+4

f = 12

c) 5 = 18 + k

-13 = k

Answer:

A= -7

B= 12

C= -13

Step-by-step explanation:

This is how I do it

A) Subtract 4 from each side, and when you do that you get 7=-t which makes the answer -7.

B) Add 8 to both sides and you get f=12.

C) Subtract 5 from each side, and when you do that you get -k=13 which makes the answer -13.

I hope this helps, and have a great day! :)

Also if you need more of an explanation I can help!

                                                     

Please answer it it’s 2:40pm and it’s due at 4:00pm..

Answers

58.5 is the answer if I’m correct. Sorry for being late

Question Progress
Homework Progress
16/32 Marics
Toby goes on holiday to Geneva, Switzerland.
In Geneva, Toby sees a watch costing 193.75 CHF (Swiss Francs).
In Manchester, an identical watch costs £145.
Given that £1 = 1.55 CHF
a) In which city is the watch cheaper?
b) By how much is it cheaper (in £)?​

Answers

193.75 divided by 1.55 = £125
So I was cheaper in Switzerland

{2x=7y+33
{5x-3y= -19

-Solve using systems of equations-​

Answers

Answer:

the answer is -> (-8,-7)

Someone pls answers these two!!

Answers

12 and -6 I think
And the last one for the second question.
I hope this is right and helps you!

15 and up my remind code is
4k6bg89 if you wanna hangout I live in Atlanta Georgia

Answers

Answer:

that's a bit too far away haha

Answer:

oof that sucks i live in cali

Step-by-step explanation:

The ratio of pink to black counters
in a bag is 2:5 and the ratio of
black to white counters is 3 : 2
If there are 93 counters altogether
how many black counters are
there?

Answers

Answer:

B

Step-by-step explanation:

Whoever answers this question first gets brainly 3

Answers

Answer:

45%

Step-by-step explanation:

The answer is (b) option 45

find the slope . (5,8) and (-4,6) . can someone help plz

Answers

An

2/9 is the answer

Step-by-step explanation:

The answer would be m = 2/9

Evaluate the following expression if x=3: 1^x
Please help me :(

Answers

Answer:

1

Step-by-step explanation:

Match the equations to the lines

Equations

Y= 2x-1
Y= -1/2x+1
Y= -1/2x-1
Y= 1/2x-1
Y= -2x-1
Y= 1/2x+1

Answers

Answer:

A is -2x-1

B is 2x-1

C is -1/2x+1

D is -1/2x-1

E is 1/2x+1

F is 1/2x-1

pllsssssssssss neeed this done so i can go to sleep
:(

Answers

the first option x > -5

Answer:

r is greater then 5

Step-by-step explanation:

if it's pointing from say 3 up to 10 the number is bigger then the answer

Question: y - 2 = -3 (x + 2)
Please help & hurry.

Answers

Answer:

x=  −1 /3  y+  −4 /3

Step-by-step explanation:

X intercept: (-4/3, 0)

Y intercept: (0, -4)

Slope intercept form: y = -3x - 4

Standard form: 3x + y = -4

9 (x− 3 =) 45 pleas answer fast

Answers

Answer: x = 8

Step-by-step explanation:

9 ( x - 3 ) = 45

distribute 9

9x - 27 = 45

combine constants

9x = 45 + 27

compute 45 + 27

9x = 72

divide both by 9

9x/9 = 72/9

final answer

x = 8

Answer : x=8

9(8-3)=48

9(5)=45

It took Alicia 50 minutes to read and take notes on 25 pages of her science textbook. At that rate, how long would it take her to read and take notes on 35 pages of the textbook?

Answers

Hello I hope I can help you with this!!

EXPLANATION:
50minutes= 25 pages

50/5= 10
25/5=5

10 minutes = 5 pages

We want to find out 35 pages so...

5 pages times 7 to get 35 pages so we have to do the same to the other side...

10 minutes: 5 pages

10 minutes times 7

70minutes: 35 pages

ANSWER IS: 70 minutes

4x + 5 = 37
PLEASEEE HELP

Answers

Answer:

8

Step-by-step explanation:

4x +5 = 37

4x + 5 - 5 = 37 - 5

4x = 32

4x/4 = 32/4

x = 8

hope this helps

HELP NOW PLEASE~!!!!!

Answers

i think it’s the third option

i also need help with this one can y’all put the step by step explanation please?

Answers

Answer:

66

Step-by-step explanation:

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