elimination method -2x-7y=13 and 3x+6y=15​

Answers

Answer 1

Answer:

The answer is (61/3), (-23/3)

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Hoped this helped!


Related Questions

IF YOU DECIDE TO HELP ILY!!

Answers

Answer:

n equals 4

Step-by-step explanation:

What is the decimal equivalent of four and two fifths? omg pls help me!!!!!!!!!!!

Answers

Answer: The answer is 0.8

Step-by-step explanation:

We know that 2 is simply 2.0 and 45 is 4×(15) , which is simply 4×0.2=0.8

Answer:

4.4

Step-by-step explanation:

standard form

-3 time 2 time A +5(-7b)+(12 time c time 4)

Answers

Answer:

-6A - 35b + 48c

hope it's helpful ❤❤❤❤❤❤❤

:)

THANK YOU.

7. Which of the following is a true statement
about the angles in the figure below?

Answers

Answer:

d

Step-by-step explanation:

Answer:D

Step-by-step explanation:

If the car spends no time going 35 miles per hour, about how long would the trip take? Round the answer to the nearest hundredth. and explain

Answers

What’s the car ride hour

Help please i dont get it

Answers

Answer:

3.51

Step-by-step explanation:

yes

Answer:

3.28

Step-by-step explanation:

Which is greater, 24 or - 25

Answers

Answer:

24

Step-by-step explanation:

its positive

Answer:

-25 ∠ 24

Step-by-step explanation:

Find the new price for the markup given. Round to the nearest cent If necessary. 3.00 marked up 72%​

Answers

Answer:

33%

Step-by-step explanation

its a throw off question stay sharp

help what is the value of b?​

Answers

Answer:

44 °

Step-by-step explanation:

180- (84+52) = 44

Answer:

44 degrees

Step-by-step explanation:

A triangle has a total of 180 degrees.

First, add the 2 sides that are given to you:

84 + 52 = 136 degrees

Subtract 136 from 180 to find the remaining angle:

180 - 136 = 44 degrees

b = 44 degrees

HELP ASAP
The number of minutes played and the number of field goal attempts for
certain players of the Indiana Pacers for the 1999–2000 season is shown below.
Player
Player
Best
Rose
Miller
Smits
Croshere
Davis
Minutes Field Goal
Played Attempts
2978 1196
2987 1041
1852
890
1885
653
Jackson
Perkins
Minutes Field Goal
Played Attempts
1691 561
2190 570
1620-- 441
582 187
634
108
Mullin
Mckey
2127
602
17. Make a scatter plot of the data.
18. Does the scatter plot show any relationship? If so, is it positive or
negative? Explain your reasoning.
19. Suppose a player played 2500 minutes. Predict the number of field goal
attempts for that player.

Answers

Answer:

See below and the attachment

Step-by-step explanation:

Refer to attached graph.

It includes the points and a best fit line produced by a graphing calculator.

17. The scatter plot is attached18. There is a positive slope. Number of field goal attempts increase as minutes played increase.19. The point is plotted: 2500 minutes gives about 880 field goal attempts.

Answer:

It includes the points and a best fit line produced by a graphing calculator.

17. The scatter plot is attached

18. There is a positive slope. Number of field goal attempts increase as minutes played increase.

19. The point is plotted: 2500 minutes gives about 880 field goal attempts.

Step-by-step explanation:

I need help asap, please

Answers

Answer:

yous math symblom

Step-by-step explanation:

its a good website for that

Answer:

x = -6

Step-by-step explanation:

4(x-6)+4=6x-8

Multiply by four in parenthesis.

4x-20=6x-8

Add 20 on both sides.

4x=6x+12

Subtract 6.

-2x=12

Divide -2

z = -6

:)

Which of the following is the least

Answers

Answer:

-512 is the least number

-512 is the least


right answer


Jordyn made some bracelets and sold them at a craft fair for $8 each. She paid $50 in
materials and fees. Jordyn's profit after the fair was $310. She wants to know how
many bracelets she sold.

Answers

Answer:

38

Step-by-step explanation:

because when u divide it

38 is the right answer

Elizabeth changed her time for the mile walk from 30 minutes to 24 minutes. What was the percent of change?​

Answers

-20%

Basically, we are trying to find the change from 30 to 24 in terms of percent. We do this in three steps:

1) Find the difference between 30 and 24 as a number.

2) Divide the result from Step 1 by the starting number 30.

3) Multiply the result from Step 2 by 100 to get it in terms of percent.

The three steps above can be made into a formula. Thus, to find the percent change from 30 to 24, we use this formula:

((Y-X)/X)*100 = Percent Change

X is the starting number 30, and Y is the ending number 24 that it changed to. When we enter these numbers into the formula, we get:

((24-30)/30)*100 = -20.00%

Thus, the answer to the question "What is the Percent Change from 30 to 24?" is:

-20.00%

A drawing has a scale of 1:40
On the drawing, a kitchen is a rectangle measuring 14 cm by 22 cm
A bedroom has an actual area of 500 000 cm?
How much smaller, in cm2, is the kitchen than the bedroom?

Answers

Area of kitchen = (14*40)(22*40) = 448,000 sq cm

500,000 - 448,000 = 52,000
The kitchen is 52,000 square centimeters smaller than the bedroom.

Ramon walks at a constant rate of 6mi/hr. Write an equation using the variables m and h to represent how many miles he would walk in any given hour.​

Answers

Answer:

Key for H and M. ( H-Hour)(M-Mile)

6m= h divided by 10=6

Step-by-step explanation:

6 times 10= 60 minutes. So 1 mile every 10 minutes. This was hard, but it clicked at the end. Good luck, and remember to sub out the divided and multiply by with the signs!

Help pls easy points 20

Answers

Answer:

ahhhhhhhhhhhhhhhhh

Step-by-step explanation:

3(2x + 1) = 6(5x - 4)

Answers

Answer:

X= 9 over 8 or 9/8

Step-by-step explanation:

hopefully this helps

Answer:

9/8 or 1.125 or 1 1/8

Step-by-step explanation:

10.) Combine the like terms in the following expression: 8 + 3x + x + 5 + 2x *

Answers

Answer:

6x+13

Step-by-step explanation:

I hope this is right.

I’m pretty sure it’s 6x+13

What is the value of
2021

2223
+
2425
?
?

Answers

Answer:

2223

Step-by-step explanation:

We need to find the value of 2021-2223+2425.

Firstly subtract 2223 from 2021.

2021-2223 = -202

Now add -202 and 2425. So,

2425 +(-202) = 2223

So, the value of 2021-2223+2425 is 2223. Hence, this is the required solution.

Because of prevailing winds, a tree grew so that it was leaning 6º from the vertical. At a point d = 37 meters from the tree, the angle of elevation to the top of the trees
is a = 29° (see figure). Find the height h of the tree. (Round your answer to one decimal place.)
h =
m
d m
Additional Materials
eBook

Answers

Answer:

Height of the tree is 40.0 meters.

Step-by-step explanation:

From ΔABC,

m∠ABC = 90°

Since, m∠ABC = m∠CBD + m∠ABD

90° = 6° + m∠ABD

m∠ABD = 90°- 6° = 84°

By triangle sum theorem in ΔABD,

m∠ABD + m∠BDA + m∠DAB = 180°

84° + 29° + m∠BDA = 180°

m∠BDA = 180° - 113°

             = 67°

By sine rule in ΔABD,

[tex]\frac{\text{sin}(\angle BDA)}{d}= \frac{\text{sin}(\angle ABD)}{h}[/tex]

[tex]\frac{\text{sin}(67)}{37}= \frac{\text{sin}(84)}{h}[/tex]

h = [tex]\frac{\text{sin}(84)\times 37}{\text{sin}(67)}[/tex]

h = 39.98

h ≈ 40.0 meters

Therefore, height of the tree is 40.0 meters.

The sine rule is the ratio of the side length to the sine of the opposite angles. Then the height of the tree is 40 meters.

What is trigonometry?

Trigonometry deals with the relationship between the sides and angles of a triangle.

Because of prevailing winds, a tree grew so that it was leaning 6º from the vertical.

At a point d = 37 meters from the tree, the angle of elevation to the top of the trees is a = 29° (see figure).

∠ABC = 90

We have

In ΔABC

∠ABC = ∠CBD + ∠ABD

∠ABD = 90 - 6

∠ABD = 84

By triangle sum in ΔABD, we have

∠ABD + ∠BDA + ∠DAB = 180

                            ∠BDA = 180 - 84 - 29

                            ∠BDA = 67

Then by the sine rule, we have

[tex]\begin{aligned} \dfrac{\sin \angle BDA}{d} &= \dfrac{ \sin \angle ABD }{h}\\\\\dfrac{\sin 67}{37} &= \dfrac{\sin 84}{h}\\\\h &= \dfrac{\sin 84} \times 37{\sin 67}\\\\h &= 39.98 \approx 40 \end{aligned}[/tex]

More about the trigonometry link is given below.

https://brainly.com/question/22698523

Select the fraction that is equivalent to one half.

HOW DO I DO THIS PLZ HELP

Answers

Answer:

1/2 one half

Step-by-step explanation:

Answer:

Multiply both the numerator and the denominator by the same whole number.

For example;

If you multiply 1/2 by 2/2, this will equal 2/4. You can simplify 2/4 to 1/2.

So to find 1/2 to be equivalent to another fraction, multiply both the numerator and the denominator by the same number to find a fraction that equals 1/2.

Please show how you got answer

Answers

Firstly u need to make equation in formula of y=ax+b
Here we have -x+y=16
When you take x to other side you must change sign of it
Then y=16+x
Y=x+16
I hope u learn


Which equation is nonlinear?
o 2x - y = 9
Oy = x2 + 3
Oy = 2x - 3
OX= y

Answers

X=y is not a linear equation

Which expression is equivalent to 0?
(a)(-a)
a +(-a)
a/-a
a - (-a)

Answers

Answer:

a - a or (a +(-a))

Step-by-step explanation:

A negative plus a positive is always zero if they have the same variable.

a+(-a) equals zero because they cancel each other out .

(a)(-a) equals -a
a/-a equals -a
and
a-(-a) equals positive a

Is (3, 2) a solution to the equation y = X?
Yes or No ?

Answers

Answer:

no

Step-by-step explanation:

Answer:

the answer is no

Step-by-step explanation:

..Kyle purchased a plant that was 2 inches tall. The function h(t) = 2 + 0.75t models the height of the plant t months after Kyle purchased the plant. What is the meaning of h(11)?
a. The plant is 12 inches tall after 11 months.

b. The plants is 11 inches tall after 12 months.

c. The plant is 11 inches tall after 10.25 months

d. The plant is 10.25 inches tall after 11 months.​

Answers

Answer:

a

Step-by-step explanation:

−9.3=d−3.4

Help

Please
Mr

Answers

Answer:

d = -5.9

Step-by-step explanation:

Theodore and Sarah have a small business selling custom-made T-shirts. They currently sell 205 shirts per month and charge $15 per T-shirt. Sarah thinks they can increase their revenue by increasing their selling price, but Theodore knows from experience that each $1 increase in price will decrease the number of T-shirts they sell by 9 shirts per month. Find an expression for the total monthly revenue Theodore and Sarah's business can generate if they change the selling price of their T-shirts. Let x represent the number of $1 increases in the price of the T-shirts.

Answers

Answer:

(205-9x) times15

Step-by-step explanation:

The expression the total monthly revenue of Theodore and Sarah's business is  (205-9x)15.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Theodore and Sarah have a small business selling custom-made T-shirts. They currently sell 205 shirts per month and charge $15 per T-shirt. Sarah thinks they can increase their revenue by increasing their selling price, but Theodore knows from experience that each $1 increase in price will decrease the number of T-shirts they sell by 9 shirts per month.

The expression will be written as,

E = (205-9x)15.

Therefore, the expression the total monthly revenue of Theodore and Sarah's business is  (205-9x)15.

To know more about an expression follow

https://brainly.com/question/25968875

#SPJ5

Ben wants to buy a guitar. The regular price of the guitar is $329.99. The sale price of the guitar is 25% off of the regular price. What is the sale price of the guitar?

Answers

$247.49 because 329.99 minus 25 percent gives that amount
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