Find the solution to the following system using substitution or elimination: y = 3x + 7 y = -2x-3 O A. (1,10) O B. (-2,1) C. (1.-4) D. (-2,-7)​

Answers

Answer 1

Answer:

The answer is B

Step-by-step explanation:

Because I calculated properly and check my answer 2 times

trust me this is the answer

pls mark me as brainliest

Answer 2

Answer:

B

Step-by-step explanation:


Related Questions

Help me solve this problem please

Answers

Answer:

sorry im just answering this cuz need points

Step-by-step explanation:

Зу +6 - 4(х - 9) Standard Form​

Answers

Answer:

3y + 42 -4x

Step-by-step explanation:

3y +6 -4(x-9) distribute -4 through the  ( )

3y + 6 -4x + 36   calculate add the numbers

3y + 42 -4x

i need help please asap

Answers

Answer:

[tex]1.94[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

[tex]\frac{8.6 \cdot 0.082}{0.363}[/tex]

Step 2: Evaluate

Multiply:                    [tex]\frac{0.7052}{0.363}[/tex]Divide:                      [tex]1.9427[/tex]Round:                      [tex]1.94[/tex]

Answer:

1.94

Step-by-step explanation:

First we  multpiy the top

8.6 x 0.082 = 0.7052

0.7052/0.363= 1.942

=1.94

What does the area of any shape tell us??

Answers

The area of a shape tells you the amount of space inside. The perimeter tells you how long the outline is. This is what the area and perimeter tell you.

Hope this helps you!

can't figure this out​

Answers

Answer:

2.55%

Step-by-step explanation:

You have 11 years to make $500, To do this, take the 11 and multiply it by the percentage, after that, do $2000 divided by 11 x (percentage) answer. Then you will have the difference, which should roughly equal $556, which is slightly over $500 but you can't have it under so this is the best answer.

BONUS! What is the slope of the line that passes through (-3, 5) and (-1, 8)?

Answers

Answer:

The slope is 3/2

Step-by-step explanation:

Slope formula y2 - y1

                       x2 - x1

8-5/-1+3

3/2

The slope is 3/2

~PumpkinSpice1

Answer:

The slope is 3/2

Step-by-step explanation:

Use slope intercept form. [tex]\frac{y_2-y_1}{x2-x_1}[/tex]

[tex]\frac{8-5}{-1-(-3)}[/tex] = [tex]\frac{3}{2}[/tex]

ANSWER ASAP FOR BRAINLIESTT

Answers

Y = 1/7x + b
Plug in the points
1 = 1/7(5) + b
1 = 5/7 + b
7/7 = 5/7 + b
b = 2/7
Equation: y = 1/7x + 2/7

Answer:

Y= 1/7x + 2/7

Step-by-step explanation:

2/7 equals to b

Hope this helps.. :)

7/2x+1/2x=6+5/2x pls help

Answers

Answer:

4

Step-by-step explanation:

7/2+1/2=8/2

8/2=6=5/2

8/2-5/2=3/2

3/2=6

3/2=1.5

6/1.5=4

What is 7x=5y x 6. Plllllssss heeelllp meh. Im stupid and don't know what this is.

Answers

Answer:

x=0

Step-by-step explanation:

"x6"   was replaced by   "x^6".

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :7x-(5y*x^6)=0

7x -  5x6y  = 0

7x - 5x6y  =   -x • (5x5y - 7)

-x • (5x5y - 7)  = 0  Hope this helps and you are not stupid everybody has at least something that they dont understand :)))

                   

A recipe calls for ½ cup of flour to make 8 servings. How many cups of flour are needed to make 20 servings?

Answers

Answer:

20/8 = 2.5

1/2+1/2+1/2=

1  1/2

Step-by-step explanation:

Ur welcome:)

Juan runs in place for 256 minutes on Monday. He runs in place for 112 times as long on Tuesday.

Juan draws this model to represent the number of minutes he runs in place on Tuesday.

How many minutes does Juan run in place on Tuesday?

Answers

Answer:

the answer is 4.25 or 4 1/4

Step-by-step explanation:

which equation, when solved, gives 8 for the value of x?

a. 5/2x + 7/2 = 3/4x + 14
b. 5/4x - 9 = 3/2x - 12
c. 5/4x - 2 = 3/2x - 4
d. 5/2x - 7 = 3/4x + 14

Answers

Answer: c. 5/4x - 2 = 3/2x - 4

Step-by-step explanation:Find the exact value using trigonomectric identities

what is the value of x​

Answers

Umm there is no numbers

To plot the point (5, -3) you would move up 5, then left 3.

1. False
2. True

Answers

Answer:

False

Step-by-step explanation:

Positive in the X-axis is always to the right and negative is left and in the Y-axis positive is up and negative is down  

Which ratio is less than 15 Over 24
A. 1/2
B. 7/8
C. 19/24
D. 6/8

Answers

Answer:

A

Step-by-step explanation:

find the zeros of the polynomial x square-3 and verify the reationship between the zeros and the coefficient.​

Answers

Answer:

√3, and -√3

Step-by-step explanation:

to find the zeros or roots of the polinomial x²-3 make it equal to zero and solve for x

x²-3=0 add 3 to both sides to isolate x

x² = 3 squareroot both sides

√x²= √3

x= ±√3 are the two zeros

DUE AT TWELVE.Help it's savvas math pleaseeeeeee

Answers

Answer:

65%

Step-by-step explanation:

What I did was 2900/2 is 1450 which is half and than I subtract 1450 by 1,885 giving me 435 more people. I honestly, guess 65% but I also checked it on the calculator 2900 - 65% give 1,885.  So, 65% is the correct answer.

brainliest!

what translation rule maps ABCD to A’B’C’D’ ?

Answers

I think it is option 1.

The reason that I say this is because ABCD is going left 1 to get to A’B’C’D’, which is like saying the x value is moving in the negative direction by 1. There is not an up or down translation, so there would be no change in y value (0). With this being said, the translation is going <-1,0>, or option 1.

The translation rule applied to the quadrilateral ABCD is T(1,0). The correct option is B.

What is translation?

A translation in mathematics moves a shape left, right, up, or down but does not turn it. The translated (or image) shapes appear to be the same size as the original shape, indicating that they are congruent.

Given that the quadrilateral is translated on the x-y plane from ABCD to A'B'C'D'.

The translation applied to the coordinates of the quadrilateral will be one unit to the right and zero units up or down.

The translation will be written as,

T ( 1 , 0 )

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the shopkeeper buys 100 oranges for $ 25, 50 kg of apples for $ 80 and 20 melons for $ 15. he sells all of these oranges, apples and melons at the prices shown in the table. calculate his percentage profit

Answers

Answer:

Table?

Step-by-step explanation:

Help Please! A runner saved $25 when he purchased a pair of tennis shoes on sale. If the sale price was 35% off the regular price, what was the regular price of the tennis shoes?

F $71.43 G $60.00 H $51.23 J $8.75​

Answers

Answer:

Option F: $71.43 is the correct answer.

Step-by-step explanation:

By the question we can observe that 35% of regular price is $25 so this information will be used to calculate the original price of the shoes.

Let

P be the price of shoes

and d be the discount

So

[tex]d = \$25\\P=?[/tex]

The discount is 35% of P so

[tex]d = 35\%\ of\ P\\25 = 0.35 * P\\P = \frac{25}{0.35}\\P = 71.42857...[/tex]

Rounding off to the nearest hundredth

The regular price is: $17.43

Hence, option F: $71.43 is the correct answer.

Bryan’s monthly electric bill is determined by adding a flat administration fee to the product of the number of kilowatt hours of electricity used and the cost per kilowatt hour. When he uses 1,100 kilowatt hours of electricity, his bill is $113. When he uses 1,500 kilowatt hours of electricity, his bill is $153. What is the monthly administration fee? $

Answers

Answer:

3

Step-by-step explanation:

A biker cycles 9 miles in 2 3 of an hour.
a
Make a chart and fill it in to show how far he will bike if he maintains the same pace for 2 hours, 3 hours, 3.5 hours

Answers

Answer:

2 hours: 27 miles, 3 hours: 40.5 miles, 3.5 hours: 47.25 miles

Step-by-step explanation:

1.) If a hiker hikes 9 miles in 2/3 of an hour, he will hike 4.5 (Half of 2/3 is 1/3 and half of 9 is 4.5) miles in 1/3 of an hour and 13.5 miles per hour. (1/3 times 3 gives us a whole and 4.5 times 3 is 13.5)

2.) 2 hours: 13.5 * 2 = 27 miles

3.) 3 hours: 13.5 * 3 = 40.5 miles

4.) 3.5 hours: 13.5 * 3.5 = 47.25 miles

2 hours: 27 miles, 3 hours: 40.5 miles, 3.5 hours: 47.25 miles

Step-by-step explanation:

1.) If a hiker hikes 9 miles in 2/3 of an hour, he will hike 4.5 (Half of 2/3 is 1/3 and half of 9 is 4.5) miles in 1/3 of an hour and 13.5 miles per hour. (1/3 times 3 gives us a whole and 4.5 times 3 is 13.5)

2.) 2 hours: 13.5 * 2 = 27 miles

3.) 3 hours: 13.5 * 3 = 40.5 miles

4.) 3.5 hours: 13.5 * 3.5 = 47.25 miles

this is the guys above i just need points

A person standing close to the edge on top of a 144-foot building throws a ball vertically upward. The quadratic function h ( t ) = − 16 t 2 + 128 t + 144 models the ball's height about the ground, h ( t ) , in feet, t seconds after it was thrown. What is the maximum height of the ball?

Answers

Answer:

400m

Step-by-step explanation:

Given the quadratic equation that models the height of the ball above the ground as;

h ( t ) = − 16 t^2 + 128 t + 144

t is in seconds

To get the maximum height of the ball, first we must know the time taken by the ball to reach the maximum height.

Note that the ball has a velocity of zero at its maximum height.

v(t) = dh/dt

v(t) = -32t+ 128

at max height, v(t) = 0

0 = -32t + 128

32t = 128

t = 128/32

t = 4secs

To get the maximum height of the ball, you will substitute t = 4 into the modeled function as shown;

h ( t ) = − 16 t^2 + 128 t + 144

h ( 4 ) = − 16 (4)^2 + 128 (4) + 144

h ( 4 ) = − 256 + 512 + 144

h(4) = 400m

Hence the maximum height of the ball is 400m

FIRST CORRECT ANSWER GETS BRAINLEST!!!
Gregg has q quarters and p pennies. His brother has 4 times as many quarters and 8 times as many pennies as Gregg has. Write the sum of the number of coins they have, and then combine like terms.

Answers

8-4=4
So Greg has 4 coins

I need help with this problem a/3 + 5a/12 = 9/4

Answers

Answer:

= 3

/3 + 5a/12 = 9/4

Rectangle LMNO is rotated 90° clockwise around the origin to create rectangle L'M'N'O'. Which statement would best describe the relationship between points N and N'? They are equidistant from origin. They are midpoints of segment ON and segment O prime N prime. They are equidistant from point O. They are midpoints of segment LN and segment L prime N prime.

Answers

Answer:

A. They are equidistant from origin.

The correct statement for the relationship between points N and N' is,

⇒ They are equidistant from origin.

What is Translation?

A transformation that occurs when a figure is moved from one location to another location without changing its size or shape is called translation.

Given that;

Rectangle LMNO is rotated 90° clockwise around the origin to create rectangle L'M'N'O'.

Now,

Since, Rectangle LMNO is rotated 90° clockwise around the origin to create rectangle L'M'N'O'.

Hence, We know that;

After rotation of 90° clockwise around the origin the shape are equidistance from the origin.

Thus, The relationship between points N and N' is,

⇒ They are equidistant from origin.

Learn more about the translation visit:

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6w-19+k when w=8 and k=2

Answers

Substitute

6(8) - 19 + (2)

6(8) = 48

48 - 19

29 + 2 = 31

Answer:

f

Step-by-step explanation:

f

1(x-31)= 5(2+5)vvvvvb​

Answers

Answer:

1x-31=35

1x=35+31

1x=66

x=66

X-31=5*7
X-31=35
X=35+31
X=66

Given that sin θ = 3/4 and θ is in Quadrant II:
Find cos θ.

Answers

this is for the Sin

*Remember that sin = opposite / hypotenuse*

a² + b² = c² (where a and b are legs and c is the hypotenuse)

From the picture, you can see:

a = 3

c = 4

Plug these into the equation and solve for b.

* a² + b² = c² *

step 1: 3² + b² = 4²

step 2: 9 + b² = 16

step 3: b² = 16 - 9

step 4: b² = 7

step 5: √(b²) = √7

step 6: b = ± √7

FOR COS:

From the picture,  you can see that if θ is in quadrant II, b has to be negative.

b = -√7 = adjacent

Remember that cos θ = adjacent / hypotenuse.

cos θ = adjacent / hypotenuse

cos θ = (-√7 / 4)

2 Simplify: 2 (5+ 3x) + (x + 10)​

Answers

Answer:

7x+20

Step-by-step explanation:

multiply (5+3x) by 2 and combine like terms

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