Mathematics High School

Solve the system of equations - 8x - 5y = -13 and - 4x – 5y = 11 by
combining the equations.

Answers

Answer 1

Answer:

(6,-7)

Step-by-step explanation:

subtract them:

-8x - 5y = -13

-4x - 5y = 11

you get

-4x = -24

so x = 6

plug x into the second equation:

-24 - 5y = 11

-5y = 35

y = -7

so your solution is (6,-7).

Answer 2

Answer:

Your solution is (6, -7).

Step-by-step explanation:

Combining the equations is also known as substitution. This is done when you substitute one variable into another equation.

-8x - 5y = -13

-4x - 5y = 11

Let's change the second equation into one with one variable on each side.

-5y = 4x + 11

y = -4/5x - 11/5

Now, plug this into your first equation.

-8x - 5(-4/5x - 11/5) = -13

Distribute the -5 sign.

-8x + 4x + 11 = -13

Combine the like terms.

-4x + 11 = -13

-4x = -24

Isolate x by dividing both sides by -4.

x = -24/-4

x = 6

Now plug this back into either equation.

y = -4/5(6) - 11/5

Multiply.

y = -24/5 - 11/5

Subtract.

y = -35/5

Simplify.

y = -7

Your solution is (6, -7).

Check this by plugging in these values into the equation you have not checked yet.

-8(6) - 5(-7) = -13

-48 + 35 = -13

-13 = -13

Your solution is correct.

Hope this helps!

Related Questions

simplify please was due 11:59

Answers

Answer:

3^12

Step-by-step explanation:

The answer is 3^12
————-

Help! Sorry if it’s hard to see it would not look different everytime I retook the picture! :)

Answers


Answer:

d = 11.401754

For:
(X1, Y1) = (5, 4)
(X2, Y2) = (-4, -3)


Distance Equation Solution:

=√ (-4−5)2+(−3−4)2

=√ (-9)2+(−7)2

=√ 81+49

=√ 130

=11.401754

16. In order to get a thicker sauce, a restaurant owner combines a sauce that
is 70% tomato paste with the original sauce, which is 40% tomato paste.
How much of each should be used to make 5 L of the new 60% tomato
paste sauce?

Answers

Jshlatt said she had to take her to mommy and she was crying so she didn’t get candy for her

Simplify 8(x - 4)

8x - 4
8x - 32
x - 32
x - 4

Answers

Answer:

8x-32

Step-by-step explanation:

multiply 8 with both terms

8(x-4)8x-32answer is option b

please mark this answer as brainlist

pls help me it is important

Answers

Answer:

pls help me too

Step-by-step explanation:

i need help my class is depending on me plzz help

Answers

Answer:

C

Step-by-step explanation:

Well, the area or a circle is pi r^2. The radius is 5. 5 squared is about 25. 25 times pi is roughly 78.5. So the best answer is C.

2/3 divided by 1/9

?????

Answers

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

HELP WILL GIVE BRAINLIEST!!! Solve for x

Answers

Answer:

x=32

Step-by-step explanation:

180-122=58

58+90+x=180

148+x=180

32=x

Terri weighed 95 lbs last month. This month she weighed 105 lbs.
What is the percent of increase?

Answers

Answer:

10 Ib. difference so maybe 0.99

Step-by-step explanation:

Is it true or false?

Answers

Answer:

True

Step-by-step explanation:

Circumference is diameter x [tex]\pi[/tex]

When you divide [tex]\pi[/tex], you get diameter

The difference between six times a
number and one is seventeen

Answers

Answer:

3

Step-by-step explanation:

17 + 1 = 18

18/6 = 3

Coupon A-14$ rebate on 77$ jacket

Coupon B- 15% off on a 77$ jacket

Answers

Coupon A is the better option

Jabari deposited $300 in a savings account. Each month thereafter, he deposits $20 into the account. Write a formula to represent this sequence. Begin you formula with an=

Answers

The formula should look something like this an=300+20(m)

-) Colin is playing a video game. He wins 25 points for each gold coin he finds. His goal is to win
more than 200 points. He wants to know how many gold coins he needs to find.
) Let g be the number of gold coins Colin finds. Which inequality represents the situation?
259 > 200
259 > 200
25 +9 > 200
25+ 9 > 200

Answers

Answer:

A

Step-by-step explanation:

25g>200

so A

if my answer helps please mark as brainliest.

Factor completely.
n^2 + 7 n - 44

A) (n + 4)(n - 11)
B) (n - 4)(n + 11)
C) (n - 4)(n - 11)

Answers

(n-4)(n+11) so pretty much B

20 points! ill give brainiest if you explain


The percent increase from 18 to 26 is about __%.

Answers

Answer:44.44%

Step-by-step explanation:Take the absolute value of the difference fof the two and then divide by the first number:

Find the square root of 64a^2/9b^2+4+32a/3b​

Answers

Answer:

[tex]\frac{4.(ab+3^2}{9}[/tex]

Step-by-step explanation:

Solve the inequality. 5(x + 1) – 10 ≥ 2x + 3(x + 2)

Answers

there are no values of x that make the inequality true
No solution.

The solution of the inequality  5(x + 1) - 10 ≥ 2x + 3(2x + 2) is x ≤ - 16/3.

What are inequalities and their types?

Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.

The symbol a < b indicates that a is smaller than b.

When a > b is used, it indicates that a is bigger than b.

a is less than or equal to b when a notation like a ≤ b.

a is bigger or equal value of an is indicated by the notation a ≥ b.

Given, Inequality is 5(x + 1) - 10 ≥ 2x + 3(2x + 2).

5x + 5 - 10 ≥ 2x + 6x + 6.

5x + 5 - 10 ≥ 8x + 6.

5x - 8x ≥ 10 + 6.

- 3x ≥ 16.

3x ≤ - 16.

x ≤ - 16/3.

learn more about inequalities here :

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(-6-4) divided by (-5)

Answers

Answer:

2

Step-by-step explanation:

Simplify the following:

(-6 - 4)/(-5)

Hint: | Group the negative terms in -6 - 4 together and factor out the minus sign.

-6 - 4 = -(6 + 4):

(-(6 + 4))/(-5)

Hint: | Evaluate 6 + 4.

6 + 4 = 10:

(-10)/(-5)

Hint: | In (-10)/(-5), the numbers 10 in the numerator and -5 in the denominator have gcd greater than one.

The gcd of 10 and -5 is 5, so (-10)/(-5) = (-(5×2))/(5 (-1)) = 5/5×(-2)/(-1) = (-2)/(-1):

(-2)/(-1)

Hint: | Cancel common terms in the numerator and denominator of (-2)/(-1).

(-2)/(-1) = (-1)/(-1)×2 = 2:

Answer: 2

The equivalent value of the fraction is A = 2

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the numerator of the fraction be p

Let the denominator of the fraction be p

Now , A = p/q

when the value of p = ( -6 - 4 )

And , when the value of q = ( -5 )

On simplifying the equation , we get

A = ( -6 - 4 ) / ( -5 )

So , the left hand side of the equation is equated to the right hand side by the value of ( -6 - 4 ) / ( -5 )

A = ( -6 - 4 ) / ( -5 )

A = ( -10 ) / ( -5 )

On simplifying , we get

Divide by -1 on both numerator and the denominator , we get

A = 10/5

A = 2

Therefore , the value of A = 2

Hence , the fraction is A = 2

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I urgently need help!!!!

Answers

Answer:

A. C (3,5)

Step-by-step explanation:

This makes the most sense because of the position point C is at on the coordinate plane. It is above point D, which has a x-axis of 3. Option A is the only one that has an x-axis of 3.

Hope it helps!

Order these numbers from least to greatest.
5.019, 5.1982, 5.5, 5.19

Answers

Answer:

5.019 < 5.19 < 5.1982 < 5.5

Step-by-step explanation:

You have to look at the place values

The circle graph represents the number of teenagers at a high school who play video games. If 1,938 students go to the school, about how many students do not play video games?


101 students

544 students

803 students

1,394 students

Hope you have a great day!

Answers

Answer:

i bleave thet it is 803.

Step-by-step explanation:

Answer:

803

Step-by-step explanation:

believe me

PLZ HELP ME I BEG OF YOU!?!

Answers

Answer:

5/9

[tex] \frac{5 \div 9}{4 \div 15} = \frac{5 \times 15}{9 \times 4} = \frac{25}{12} [/tex]

Please help me out fast. And make sure to Write and solve an inequality. Or it isn't right.

Answers

Answer:75x+160

8 is the answer exactly 8

Step-by-step explanation:

Answer:

Set variable d for number of days: 75d + 160 < 760; 75d < 600; d < 8. The van has to be rented for less than 8 days for the family to spend less than $760.

Please help me out with this guys

Answers

To find the x- intercept, suptitude in 0 for y and solve for x

To the nearest tenth, find the area of a circle with a
diameter of 8 meters. Use 3.14

Answers

Answer:

28.3

Step-by-step explanation:

Math* please help!!!!

Answers

Answer:

I think its 19.1

Step-by-step explanation:

14 + 5.1

Maybe try

We need to use the formula for Area of trapezium.

Area = ((a+b)h)/2

85.95 = ((14+5.1)h)/2
19.1h/2 = 85.95
19.1h = 171.9
h = 171.9/19.1
h = 9

IF YOU ANSWER THIS RIGHT NOW ILL GIVE YOU 64 POINTS

Answers

180=5x-14+25
180=5x+11
169=5x
x=33.8, probably wrong tho:/

Answer:

x = 17

Step-by-step explanation:

Similar triangles have congruent corresponding angles

Given

ΔFEG ~ΔPJSm∠P = (5x - 14)°, m∠S = 25°, m∠E = 84°

Corresponding angle pairs:

∠F ≅ ∠P, ∠E ≅ ∠J, ∠G ≅ ∠S

Sum of internal angles of a triangle is 180°, substitute and solve for x:

m∠P + m∠J + m∠S = 180°m∠P + m∠E + m∠S = 180°(5x - 14)° + 84° + 25° = 180°5x = 180° - 95°5x = 85°x = 85°/5x = 17

Solve the equation for the red variable

Answers

i think c = p+ r because you firstly have to rearrange the equation so that you isolate the -c. which means you get -c = p-r because you have to change the sign of the r when you switch it. so -c = p-r, but to find c that isn’t minus you need to change the sign on both sides. therefore, the answer should be c = p+r.

Plz help !!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

x^2 + 7x + 5x + 35

7x : II

5x: III

35: IV

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