9x + 3y = -15
-18x - 6y = 30
X = ?
Y = ?

Answers

Answer 1

Answer:

I dont know why the answers are the same thats how i got the answer solving them

Step-by-step explanation:

answer for 9x+3y=-15  

is

x=-5/3 -y/3

y= -5 - 3x

answer for -18x-6y=30

is

x=-5/3 - y/3

y= -5-3x


Related Questions

how do you cauculate net change ​

Answers

Answer:

You can calculate net change by subtracting the current day's closing price for an asset from the closing price of the previous day!

Step-by-step explanation:

(What net change is) The net change theorem states that when a quantity changes, the final value equals the initial value plus the integral of the rate of change. Net change can be a positive number, a negative number, or zero.

NOT MY ANSWER OR WHATEVER I GOT IT FROM G0OGLE

Alex bought a total of 65 more raffle tickets than Juan. Together they bought 343
raffle tickets. How many raffle tickets did each download?

Answers

Answer:

Juan bought 139 tickets and Alex bought 204.

Step-by-step explanation:

Suppose Juan bought a total of [tex]x[/tex] tickets. Then Alex bought 65 more, which is [tex]x+65[/tex]. The sum of both totals is [tex](x)+(x+65) = 2x + 65[/tex], but we are also given that this is equal to 343. So [tex]2x+65 = 343[/tex], and as such [tex]2x = 343-65=278[/tex], so [tex]x = \frac{278}{2} = 139[/tex]. Therefore, Juan bought 139 tickets and Alex bought 65 more, which is 204.

Find the value of 4x +3y when x = 13 and y = 9

Answers

Answer:

the answer is 79

Step-by-step explanation:

hoped I helped:)

PLEASE HELP I AM HOPLESS ON THIS


What is the location of point A?
(-1, 2)
(-2, -1)
(1, -2)
(-2, 1)

Answers

Answer: (-2,1)

Step-by-step explanation:

Read it lije (x,y)

It would be the last option (-2,1)

Monica would like to earn at least $150 a week, and her parents have told her she cannot work
more than 20 hr. each week. What is the least hourly rate should she look for in order to meet her?

Plz help I’ll give u brainliest

Answers

$150 / 20 hours = $7.5 an hour to make $150 a week

Plz answer I need help Plz

Answers

Answer:

A. (3 , 1)

Step-by-step explanation:

▪︎▪︎▪︎▪︎▪︎▪︎▪︎▪︎▪︎

a) Find the value of 8 1/3
b) Find the value of 8 2/3
c) Find the value of 16 3/4

Answers

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

#

Answer:

2, 4 and 8

Step-by-step explanation:

Using the rule of exponents/ radicals

[tex]a^{\frac{m}{n} }[/tex] ⇔ [tex]\sqrt[n]{a^{m} }[/tex]

(a)

[tex]8^{\frac{1}{3} }[/tex] = [tex]\sqrt[3]{8}[/tex] = 2

(b)

[tex]8^{\frac{2}{3} }[/tex] = [tex]\sqrt[3]{8^{2} }[/tex] = 2² = 4

(c)

[tex]16^{\frac{3}{4} }[/tex] = [tex]\sqrt[4]{16^{3} }[/tex] = 2³ = 8


(4x2 + 2x + 1) + (3x2 + 4x + 1)

Answers

yes its correct you're very smart

yes you’re so smart.

What is the value of the expression r + 1,988 if r = 2,976?

Answers

Answer:

r=988

Step-by-step explanation:

r=988

Answer:

4,964

Step-by-step explanation:

if r= 2,975 and since you have to add r+1,988 the you add 2,975+1,988 that equals:4,964.

Solve using quadratic formula.
x2 – 5x – 36 = 0
Please help me ASAP!

1:x={-3,4}
2:x={9,-4}
3:x={-9,4}
4:x={-4,5}

Answers

Answer:

2

Step-by-step explanation:

Just use the quadratic formula

What is 65% of 20?





ye

Answers

Answer:

13

Step-by-step explanation:

x/20 = 65%/100

20 x 65 = 1300

1300 divided by 100 = 13

Answer:13

First you have to turn the percent into a decimal, and then multiply it by the original number.

NOW PLS ITS IN CLASS RN HELP AHH PRE-PRE ALGEBRA

Answers

Answer:

-13,-7,-3,0,3

-9,-4,-6,3,8

Step-by-step explanation:

Answer:

A) -13, -7, -3, 0, 3     B) -100, -99, -8, -25/3, -2

Step-by-step explanation:

3)Ordered from least to greatest is:  -13, -7, -3, 0, 3

(The higher the negative the "smaller" it is)

4) -100, -99, -8, -25/3, -2

These numbers are listed in order from least to greatest with the error being  -25/3. This equals -8.333 and should be in front of the -8 because it is a lesser value. The correct order would be:  -100, -99, -25/3, -8, -2 but your answer asks for one error so use the numbers above.

Use quadrilateral ABCD. What value for m DAB would show ABCD is a parallelogram?

Answers

Answer:

m∠DAB = 101°

x = 7

y = 12

Step-by-step explanation:

Properties of a parallelogram,

1). Opposite sides of a parallelogram are equal and parallel.

2). Opposite interior angles are equal in measure.

3). Consecutive interior angles are supplementary.

By the first property,

BC ≅ AD

2x + 4 = 3x - 3

3x - 2x = 4 + 3

x = 7

AB ≅ CD

2y + 10 = 3y - 2

3y - 2y = 10 + 2

y = 12

By second property,

m∠ABC = m∠ADC

2z + 15 = 3z - 17

3z - 2z = 15 + 17

z = 32

Therefore, m∠ADC = (3z - 17)°

                                = 3(32) - 17

                                = 96 - 17

                                = 79°

By third property,

m∠ADC + m∠DAB = 180°

79° + m∠DAB = 180°

m∠DAB = 180° - 79°

m∠DAB = 101°

Fiber one bran cereal boasts that it contains 57% of the Daily Value of fiber you need. If 1 serving contains 15 gram of fiber, how much fiber do you need in one day

Answers

Answer:

26.3 grams

Step-by-step explanation:

57% of fiber is 15 grams. To find 1% you would divide 15 by 57 which is 0.2631578947. Now multiply 1% by 100 to get 100% fiber. The amount of fiber needed per day is 26.31578947 (the rounded answer is 26.3)

5 quarts for every 2 pounds. How many quarts per pound?

Answers

Answer:

2.5 righttttt?????I veeeerrrry sure it is

it’s 2.5, by dividing the quarts by the pounds you get 2.5

A bag contains 5 red marbles, 3 blue marbles, 7 yellow marbles, and 2 green marbles. Which ratio can be used to compare the red
marbles to the blue marbles?
A) 3/5
B) 3/8
C) 5/3
D) 5/8

Answers

Answer:

C) 5/3

Step-by-step explanation:

The ratio comparing red to blue marbles can be created by putting 5 and 3 together, since there are 5 red marbles and 3 blue marbles

This gets you 5/3

So, the correct answer is C) 5/3

Answer:

5/3

Step-by-step explanation:

This is because there are 5 red marbles and there are 3 blue marbles. If you put them side by side, the ratio is 5:3 or 5/3.

Which expressions are equal to 105? O (104) O 103.102 1 105 (103) (10-10-10-10-10​

Answers

Answer:

the first one and third one

Step-by-step explanation:

I think

The expressions which is equal to 10⁵ are 10³. 10² and 10 . 10 . 10 . 10 . 10.

What are Expressions?

Expressions are mathematical statements which consist of two or more terms and terms are connected to each other using mathematical operators like addition, multiplication, subtraction and so on.

The given expression is 10⁵.

(10⁴)¹ = 10⁴

We have a rule of exponents,

xᵃ . xᵇ = xᵃ⁺ᵇ

10³. 10² = 10³ ⁺ ² = 10⁵

1 / 10⁵ = 10⁻⁵

(10³)² = 10^(3 × 2) = 10⁶

10 . 10 . 10 . 10 . 10 = 10⁵

Hence the equivalent expressions are 10³. 10² and 10 . 10 . 10 . 10 . 10.

Learn more about Exponents here :

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Determine the amount that should go in the blank in the sentence below.Explain
why.
Jamie needs to sell more thanelectronic devices each month.
th.
In the box below, type the sentence above with the correct number in the blank
AND explain why it must be more than that number
Plz hurry

Answers

Answer: 27444444444444444

Step-by-step

click here

yes or no?? please helppp!!!

Answers

Answer:

I think No

Step-by-step explanation:

Yes, it is a function because of the verticals line test.

Give an example of a proportion that uses the numbers 2, 3, 4 and 6. please help

Answers

Answer:

12

Step-by-step explanation:

all go into 12

Answer:

2/3=4/6

Step-by-step explanation:

they both are proportional

.Abby, Neil and Dylan share a sum of money in the ratio 2:4:5 Neil receives £60 Work out how much money Dylan receives.

Answers

Answer:

Dylan should receive £75

Step-by-step explanation:

We know that

Abby, Neil, and Dylan share money in the ratios 2:4:5

This means that for every £2 that Abby has, Neil has £4, and Dylan has £5.

From this, we also know that for every £4 that Neil has, Dylan has £5.

Now we know that Neil receives £60

For each group of £4, Dylan will have £5.

Then we need to count how many times £4 is on £60, this is equal to:

£60/£4 = 15

And for each one of these, Dylan should receive £5, this is:

15*£5 = £75

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

Answers

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:

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!

Which sum describes the total number of apples in this
array?
3 + 3 + 3
3 + 3 + 3 + 3
3 + 4
4 + 4 + 4 + 4

Answers

Answer:

3+3+3+3

Step-by-step explanation:

_% of 20=18
What goes in the "_"?

Answers

Answer:

90

Step-by-step explanation:

the missing blank is 90

Convert:
a) 3.65kg to g b) 568cm to m
c) 82L to cL
d) 0.825 m to dam e) 67.89 hg to dg f) 69g69mgtomg
Only need the answer and pls give fast pls

Answers

c. Is your answer i think :)

Write the polynomial in standard form given the following zeros. Show all work.
(hint; the polynomials are of degree 3)

1. x = -3i, x=2



2. x = 3(multiplicity 2), x = -1



Please show work I need it please and thanks fir Hu ever answers it

Answers

Answer:

x³ - 2x² + 9x - 18x³ - 5x² + 3x + 9

Step-by-step explanation:

1.

Zero's

x = -3i, x = 2 and the third zero is x = 3i

Polynomial is:

(x + 3i)(x - 3i)(x - 2) =(x² - 9i²)(x - 2) =(x² + 9)(x - 2) =x³ - 2x² + 9x - 18

2.

Zeros:

x = 3, x = 3, x = -1

Polynomial is:

(x - 3)(x - 3)(x + 1) = (x² - 6x + 9)(x + 1) =x³ + x² - 6x² - 6x + 9x + 9 =x³ - 5x² + 3x + 9

Six friends had lunch together and decided to spilt the bill evenly, If the bill was 48.60 what was everyone’s share?

Answers

Answer:

8.1

Step-by-step explanation:

48.6 /  6 is 8.1 .

The amount of money each friend is required to contribute is $8.1.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, Six friends had lunch together and decided to spilt the bill evenly.

As they have split the bill evenly,

The amount of money each friend needs to contribute can be obtained by dividing the total amount by the total number of friends which is,

= $(48.6/6).

= $8.1

learn more about the unitary method here :

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In the figure, name four points that are coplanar.
B
A
L
F
G
L, A, C, G
G, D, L, B
C, K, A, G
K, B, D, L

Answers

Answer:

CKAG are the coplanar points given, as they all fall on the closest triangular face.

How did the hundredths grid model help you calculate percents greater than 100% and percents expressed using decimals and fractions?

Answers

Answer:

How is genetic information passed from parents to offspring in humans?

But when people talk about genes being passed on, they generally don't mean genes being passed on from cell to cell during cell division. Instead, they usually mean genes being passed on from parents to children. This is known as "heredity" or "inherited genes."

Step-by-step explanation:

please please please help me

Answers

Answer:

okok

Step-by-step explanation:

\3+4=123+4−4=12−4

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