Mathematics High School

Solve the system using elimination.
3x - 5y = 8
X - 5y = - 4

Answers

Answer 1

Answer::.x=6,y=2

3x - 5y = 8......(1)

X - 5y = - 4......(2)

subtracting equation 2 from 1 we get

Step-by-step explanation:

3x - 5y = 8

X - 5y = - 4

-

------------------

2x=12

x=12/2=6

multiplying equation 2 by3 weget

3x-15y=-12........(3)

subtracting equation 1from 3

3x-15y=-12

3x-5y=8

-

------------------

-10y=-12-8

y=-20/-10=2

Related Questions

Which correlation coefficient represents the strongest downward trend in a data set? -0.83 -0.23 0.12 0.92

Answers

Answer: -0.83

Step-by-step explanation:

A correlation coefficient(r) is used to determine the strength and direction of the relationship between two variables.

-1 ≤ r ≤1

For downward trend r is negative.

For strong correlation r should be closer to 1 or -1.

From the given correlation coefficients  -0.83 is both negative and closer to -1.

Hence, a correlation coefficient represents the strongest downward trend in a data set = -0.83

Sylvie needs $110 for a concert ticket. She already has $16 and she can earn the rest by working 10 hours at her job. If h represents her hourly earnings, which of the following equations can be solved to find Sylvie’s hourly earnings? Select all that apply.

Answers

Answer:On a Road trip, a family drives 350 miles per day. How many days, d, must they travel to reach a distance of at least 1,400 miles?

Step-by-step explanation:

Question 2 Using the estimates you found in question 1, convert the lengths into decimal numbers and then find the actual area of each tile.

Answers

Answer:

Step-by-step explanation:

Answer:

A: 5.0625

B: 10.16015625

C: 15.015625

Step-by-step explanation:

marking brainiest to whoever can help me fill these in

Answers

I don't know let me think about it

How many bars of soap and toothbrushes are in each package

Answers

Answer:

Please explain

Step-by-step explanation:

Answer:3,2

Step-by-step explanation:

I did it

The measure of two side of a triangle are given if p is the perimeter and p=18x+9y find the measure of the third side

Answers

Answer:

10x + 6y

Step-by-step explanation:

Let t = length of the third side

3x + 4y + 5x - y + t = 18x + 9y

8x + 3y + t = 18x + 9y

t = 10x + 6y

please help me i only have two tries! (slopes) (brainliest)

Answers

The answer should be y=-1/7x
y=-1/7x
that should be the answer :)


Complete the table, y= 7/8x-1

Answers

Answer:

1. y = -11/4; (-2, -11/4)

2. y = -1; (0, -1)

3. y = -1/8; (1, -1/8)

4. y = 0; (8/7, 0)

5. y = 3/4; (2, 3/4)

Step-by-step explanation:

Helpppppp pleaseeeeeeee

Answers

Answer:

125

Step-by-step explanation:

6 and 7 are on a straight line (180 degrees)

Angle 2 is equal to Angle 6

Therefore 180 - Angle 6 = Angle 7

180 - 55 = 125

Well since angle 2 and 7 are not alternate exterior or interior or corresponding, they are not equal to each other so angle 2 is 55 degrees but not angle 7.
To find angle 7, we know it’s gonna be supplementary which will equal 180 degrees. So 180-55=125
The answer is 125 degrees

how to solve for x???

Answers

Answer:

B) [tex]10\sqrt{3}[/tex]

Step-by-step explanation:

So basically it's divided into 3 similar triangles and using ratios we can try to find x

long side/short side = long side/short side

(20)/(x) = (x)/(15)

[tex]x^{2}[/tex] = 300

x =  [tex]10\sqrt{3}[/tex]

I really hope I didn't make that too complicated-

Hema is making cupcakes for her classroom. She has a 14 ounce-bag of sprinkles. aif she puts 1/3 ounce of sprinkles on each cupcake, how many cupcakes can she make using the sprinkles? (fraction pls)​

Answers

Answer:

42 or 42/1

Step-by-step explanation:

Divide 14 by 1/3.

An item is regularly priced at $55 . Carlos bought it at a discount of 95% off the regular price.

Answers

Answer:

It will cost you $2.75

Step-by-step explanation:

95% of $55 = $2.75

have a nice day hope this helps :)

Which of the following expressions is equal to -3x - 12 ?
A. (-3x - 6.)(+2)
B. (-3x + 2)(x - 6 )
C. (-3x - 4)(x-3)
D. (-3x +6)(x + 21)

Answers

Answer:

C

Step-by-step explanation:

Answer:

C.(-3x-4)(x-3)

Step-by-step explanation:

1. -3x -12

2. rewrite 12 as 3 × 4

3. Factor out common term -3

4. answer -3(x+4)

Estimate the percent using decimals.
48% of 400

Answers

Answer:

192

Step-by-step explanation:

48/100 ×400

48×100

=192

Answer:

48% of 400=48/100×400=48×4=192 is your answer

Pls help!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

A) (6 , 8)

B) (-6 , 2 )

C) (4 , -4)

sally works for 38 hours per week
her weekly wage is £355.68
she receives a pay increase of 23p per hour
work out her new weekly wage
give you're answer in £

Answers

It's 38*23 =874 dollars

Solve. 4x + 1 - x = -2(x - 3)​

Answers

Answer:    In the equation 4x + 1 - x = -2(x - 3)​ X = 1

I hope this helped Please mark Brainliest

Step-by-step explanation:

Nathaniel2861401

Answer:

x = 1

Step-by-step explanation:

4x + 1 - x = -2(x - 3)

3x + 1 = -2x + 6

3x + 2x = 6 - 1

5x = 5

x = 1

a recipe for pizza crust call for 3 cups of flour for every 1 cup of water.How many cups of water are needed for 21 cups of flour



I need help!!!!

Answers

The answer is 7 cups of water are needed for 21 cups of flour.

Shown work:
1 cup of water=3 cups of flours
? Cup of water=21 cups of flours

21 divided 3=7
1 multiply by 7= 7 cups of water needed

y=x +1. what is y and x and then the (x, y) thing and the slope and the y intercept

Answers

Answer:

Your answer is

From the equation : y=x+1

slope is 1 y intercept is 1

(x,y)= ( 1,2),(3,4)...........................(Infinity -1,Infinity)

Hope that this is helpful. Tap the crown button, Like & Follow me

Whats the answer? HELP??

Answers

Answer:

(1). 50.0° ; (2). 15.5 units

Step-by-step explanation:

1) 50.0° 2) 25.5 units

Which ordered pairs are on the graph of 7x-y=2
Select all that apply:
(-3,-19)
(-1, -9)
(0, -2)
(1, 9)
(3,23)

Answers

Answer:

(0, -2)

Step-by-step explanation:

Because 7 (0) - (-2)= 2

7X0 = 0   - (-2) becomes +2

so 0+2=2

Find the distance from Pleasant Park to Frenzy farm.

GIVING BRAINLIEST.

Answers

Answer:

4.47 units

Step-by-step explanation:

Answer:

blurry

Step-by-step explanation:

- Mike is looking to promote his dance event with flyers. He went to get quotes from Company A and
Company B. Company A is charging an upfront cost of $29.95 and then 35 cents for each flyer to be
made. Company B is charging an upfront cost of $40.70 but is charging 10 cents for each flyer?
Write an equation for the total cost for each company.

Answers

Answer:

let 'f' = cost for each flyer made

Cost for Company A:  y = 29.95 + 0.35f

Cost for Company B:  y = 40.70 + 0.10f

Step-by-step explanation:

Find the percent of decrease from 87 pounds to 16 pounds. Round to the nearest tenth of a percent if necessary. Should be in percent form.

Answers

Answer:

81.6

Step-by-step explanation:

please help me its due tonight!!!

Answers

Answer:

The initial cost is $20, and it adds $5per hour

Step-by-step explanation:

Read the graph

Answer: Initial fee is $20, and the rate is 5 dollars an hour.

Step-by-step explanation: If you look at x=0, or zero minutes, you can see that y's 20. that means you to pay $20 when you begin. Looking at the line, you can see that every 2 hours, the person has to pay 10 dollars more, so you'd pay 5 dollars an hour.

I NEED HELP PLS PLS PLS PLS
The signal words _[blank A]_ indicate subtraction.

The signal words twice, double, and triple indicate _[blank B]_.

When a situation has more than one operation, be aware that you might have to use _[blank C]_ in the expression.

Parentheses tell you to do the operation inside them _[blank D]_.

Match each blank with the correct item that fills in that blank.

last
division
multiplication
increased by
decreased by
first
parentheses

Answers

decreases by --> substraction

twice, double, triple --> multiplication

more than one operation --> parentheses?

do parentheses --> first

Help help help help

Answers

Answer:

-4/5

Step-by-step explanation:

hope this helps

Answer: The slope is -4/5

Step-by-step explanation: Try finding 2 points on the graph that are on the line, then use the following formula, rise / run. The slope is -4/5.

Do -2,28 and 0,15 have a slope of -6

Answers

No they do not have a slope of -6.

What is the slope of the line?

Answers

Answer:

1 or x (the equation is y=x+1)

Step-by-step explanation:

y= 1x + 1 , enjoy your day

HELP DUE IN 15 MINS!

List the remaining corresponding congruent parts of the triangles.

∠MNA ≅ ∠:
∠NMA ≅ ∠:
Segment MN ≅ Segment:

Answers

Answer:

Step-by-step explanation:

MNA ~= DYA

NMA ~= YDA

Segment MN ~= Segment DY

Answer:

Corresponding parts are:

∠MNA ≅ ∠DYA ∠NMA ≅ ∠YDA Segment MN ≅ Segment DY

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