y=4x+3
2x-3y=21
SHOW YOUR WORK

Answers

Answer 1

Step-by-step explanation:

y = 4x+3

2x-3y = 21

2x -3(4x+3) = 21

2x -12x -9 = 21

-10x = 21 + 9

-10x = 30

x = -3


Related Questions

I'll give brainliest ​

Answers

Answer:

its 2/3

my bad

Question 3 (1 point)

A cylinder has a radius of 13 feet and a

height of 28 feet. Which statement about

the cylinder is not true?

a

The circumference is about 82 ft.

The area of one base is about 531 ft2

ОООО

The lateral area is about 2,286 ft?

The total surface area is about 2,818 ft?

Question 4 (1 nointi

Answers

Step-by-step explanation:

The radius of a cylinder, r = 13 feet

Height of the cylinder, h = 28 feet

The circumference of the cylinder is given by :

[tex]C=2\pi r\\\\=2\pi \times 13\\\\=81.68\ ft\\\\C=82\ ft[/tex]

The area of one base is given by :

[tex]A=\pi r^2\\\\=\pi \times 13^2\\\\=530.92\ ft^2\\\\=531\ ft^2[/tex]

The lateral area of the cylinder is given by :

[tex]A=2\pi r h\\\\A=2\pi\times 13\times 28\\\\A=2287.07\ ft^2[/tex]

Total surface of the cylinder is given by :

[tex]A=2\pi r h+2\pi r^2\\\\=2287.07+2\pi \times (13)^2\\\\=3348.92\ ft^2[/tex]

The total surface area of the cylinder is not matched with the given data. Hence, option (4) is not correct.

Solve the system by substitution.
4x + 7y = -41
x = y + 5

Answers

Answer:

x=-6/11, y=-61/11. (-6/11, -61/11).

Step-by-step explanation:

4x+7y=-41

x=y+5

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

4(y+5)+7y=-41

4y+20+7y=-41

11y=-41-20

11y=-61

y=-61/11

x=-61/11+5=-61/11+55/11=-6/11

The hypotenuse of a right triangle is 13 inches long. The shorter leg is 7 inches shorter than the longer leg. Find the side lengths of the triangle.

Answers

Answer:

5 and 12 inches

Step-by-step explanation:

Let the shorter leg be x.

13²=x²+(x+7)²

169=x²+x²+14x+49

169=2x²+14x+49

120=2x²+14x

120=2x(x+7)

60=x(x+7)

60=x²+7x

x=5

shorter length=5, longer length=12

What graph represents the inequality? Whoever answers first gets brainliest!

Answers

Answer:

B

We know the circle is closed

Your answer would be A because there are no negative number in the equation and the number is inclining

PLEASE HELP.. A LOT OF POINTS GIVEN!! JUST PLEASE GIVE ME THE RIGHT ANSWER.


Question 1 :


The graph of f(x)=x2 was transformed to create the graph of g(x)=(x−4)2.


Which statement describes this transformation?


A) a horizontal shift to the right 4 units


B) a horizontal shift to the left 4 units


C) a vertical shift up 16 units


D) a vertical shift down 16 units



Question 2 :


The graph f(x)=x2 was transformed to create the graph g(x)=−(x2)2.


Which statement describes this transformation?


A) a reflection over the y-axis and a vertical stretch


B) a reflection over the x-axis and a horizontal stretch


C) a reflection over the x-axis and a vertical stretch


D) a reflection over the y-axis and a horizontal stretch

Answers

Answer:

A) a horizontal shift to the right 4 units

Step-by-step explanation:

As you can see in the image we simply went 4 unites to the right.

The circumference of a circle is 9.31cm. Find the length of the diameter. Give your answer rounded to 2 DP.

Answers

Answer:

2.96cm

Step-by-step explanation:

C= 2x Pi x Radius

9.31 = 2 x Pi x Radius

9.31/2 = Pi x Radius

4.655 = Pi x Radius

4.655/3.14 = Radius

1.4824840764331210191082802547771 = Radius

Now, that you have worked out the radius which is half the diameter

Radius + Radius = Diameter

1.4824840764331210191082802547771 + 1.4824840764331210191082802547771         = 2.964968153

                                                                               = 2.96cm to 2 d.p

You can double check because C= 2 x Pi x Radius

                                                      9.31 = 2 x 3.14 x 1.482

I need help with this question​

Answers

Answer:

A

Step-by-step explanation:

Answer:

Step-by-step explanation:

4 and -1 are y-intercepts. Then based off of those points, find the next coordinate points by using the given slope. I do not see the correct answer in any of the options. You may have one not included in the image. If so, look at the image below.

Which fraction is equivalent to 2/34 ? A 11/2 B 11/3 C 11/4 D 11/12

Answers

Answer:

C. 11/4

Step-by-step explanation:

We can make 2 into fourths: in one whole there are 4 fourths so in two wholes there are 8 fourths.

Then add the 3/4 to the 8/4 and we get 11/4.

C. 11/4

Are the two triangles similar? How do you know?

Answers

Answer:

Yes the triangles are similar.

if you look at Angle C it's 60° and F is also 60°

60 + 67 is 127

127 + 53 is 180° which is the amount a triangle is. (assuming that E is 67°)

Similar triangles may or may not be congruent triangles.

The two triangles are similar.

From the figure, we have:

[tex]\mathbf{\angle F \cong \angle C = 60}[/tex] ----- Angles F and C are corresponding

[tex]\mathbf{\angle D \cong \angle G = 53}[/tex] ----- Angles D and G are corresponding

[tex]\mathbf{\angle H \cong \angle E = 67}[/tex] ----- Angles H and E are corresponding

Add the above angles.

[tex]\mathbf{Sum = 60 + 53 + 67}[/tex]

[tex]\mathbf{Sum = 180}[/tex]

The sum of the angles equal 180 degrees,

Hence. the triangles are similar triangles.

Read more about similar triangles at:

https://brainly.com/question/14926756

MULTIPLE CHOICE
What is your output when x is -5?
A. 1
B. -9
C. -1
D. 9

Answers

B) -9

STEP BY STEP EXPLANATION

5 donuts and 2 cups of hot Chocolate costs 24$. 2 donuts and 3 cups of hot chocolate costs 14$.How much does each donut and each cup of hot chocolate cost​

Answers

Answer:cost of each donut =$4

and cost of each cup of hot chocolate =$2

Step-by-step explanation:

Step 1

Let donuts be represented as d

and cups of hot chocolate be rep as c so that

5 donuts and 2 cups of hot Chocolate costing 24$ will be expressed as

5 d+ 2 c= 24

And 2 donuts and 3 cups of hot chocolate costing  14$ will be expressed as

2d +3 c= 14

Step 2

Using elimination method,Multiply equation 1 by 3 and equation 2 by 2

15d+ 6c= 72----equation 3

4d+ 6c= 28-----equation 4

Subtracting equation 4 from equation 3 gives us

11 d=44

d= 44/11

d= 4

To find c, using equation 1

5 d+ 2 c= 24

5 x 4+ 2c=24

20+2c=24

2c=24-20

2c=4

c=4/2 =2

cost of each donut =$4

and cost of each cup of hot chocolate =$2

what is first three common multiples of 4,9,and 12​

Answers

Answer:

36 is the answer of this question

Answer:

Methods to Find LCM of 4, 9 and 12

Least Common Multiple of 4, 9 and 12 is the smallest number, which is exactly divisible by all of them without any remainder.

Multiples of 4 = 4, 8, 12, 16, 20, 24, 28, 32, 36.

Multiples of 9 = 9, 18, 27, 36.

Multiples of 12 = 12, 24, 36.

If , then what is mto the nearest degree?

Answers

Answer:

70 degrees

Step-by-step explanation:

If cosm<A = 342/1000, we are to find the value of a

Take arccos of both sides

cosm<A = 342/1000

cosm<A = .342

arccos(cosm<A) = arccos(0.342)

m<A = arccos(0.342)

m<A = 70 degrees

Hence the measure of m<A is 70 degrees

8(__+__)=8m+8n Please help, ​

Answers

It’s 8 (m+n) = 8m + 8n

Answer: m and n

8(m+n)= 8m + 8n

Identify the scale factor if the length of a model train engine is 3 feet and the length of the engine itself is 24 feet

Answers

Answer:

jHshshshhzysjshhddbhxsbsshshsgshyskinsdisbandeds

Answer:

it should be 1 over 8

Step-by-step explanation:

x + y = -6 The slope is and the y-intercept is​

Answers

The y intercept is at -6

The graph shows the number of cycles of a crosswalk signal during the day and during the night.

Answers

Answer:

Step-by-step explanation:

a). Since, both the lines are passing through origin (0, 0) y-intercept of the lines are zero.

For day periods,

Let the equation is, y = mx

Since, this line passes through (2, 80),

80 = 2m

m = 40

Therefore, equation for the day periods will be,

y = 40x

For night periods,

Let the equation is, y = mx

Since, this lines passes through (3, 90),

90 = 3m

m = 30

Therefore, equation of the line is,

y = 30x

b). For x = 6 hours,

Number of cycles in the day (y) = 40 × 6 = 240

Number of cycles in the night (y) = 30 × 6 = 180

Therefore, difference in the cycles in day and night = 240 - 180 = 60

Becca joins a gym that charges a $150 starting fee, plus $50 per month she will quit before she’s payed the total of $1000, How many months can she work out at the gym?

Answers

Answer:

I believe it 13

Step-by-step explanation:

150+50= 200 then 100= two months so i added up till i got 13 weeks

Remove all perfect squares from inside the square root.
\sqrt{30b^5}=

Answers

Answer:

The answer is b=0 or b=9.085603

Answer:

[tex]b^{2} \sqrt{30b}[/tex]

Step-by-step explanation:

Gloria rides a bike 8 miles in 40 minutes. Nanette rides a bike 5 miles in 30 minutes. Who bikes faster? Explain.

Answers

Answer:

Nanette

Step-by-step explanation:

Nanette.

Gloria's rate = 40/8 = 5mph

Nanette's rate = 30/5 = 6mph

Hope that helps!

Answer:

gloria

Step-by-step explanation:

40 divided by 8 = 5

30 divided by 5 =6

The diagram shows the position
of three towns represented by
letters A, B and C.
NA
B is 7 km from A on a bearing of 037°
C is 8 km from B on a bearing of 140°
Find the bearing of C from A.
Give your answer correct to 1 decimal place.

Answers

Answer:

Step-by-step explanation:

143º I’m not sure

The bearing of town C from town A is 93.3 degree if the B is 7 km from A on a bearing of 037° C is 8 km from B on a bearing of 140°

What is an angle?

When two lines or rays converge at the same point, the measurement between them is called a "Angle."

If we extend the line NA and NB

As we can see, line NA and NB are parallel and cut by transversal AB

The angle NBA and BAN' will be equal.

Angle BAN' = 180 - 37 = 143 degree = angle NBA

Angle CBA = 360 - 140 - 143

Angle CBA = 77 degree

Now, applying cos law:

b² = a² + c² - 2ac[cos B]

b² = (8)² + (7)² - 2(8 x 7 x cos77)

b = 9.37 km

To find the measure of the angle A applying sin law:

(sinA)/a = (sinB)/b

sinA = (axsinB)/b

sinA = (8xsin77)/9.37

A = 56.3⁰

Bearing of town C from town A:

α = A + 37⁰

α = 56.3⁰ + 37⁰

α = 93.3⁰

Thus, the bearing of town C from town A is 93.3 degree if the B is 7 km from A on a bearing of 037° C is 8 km from B on a bearing of 140°

Learn more about the angle here:

brainly.com/question/7116550

#SPJ2

which one is right, i need to knowwwwwwwwwwwwwwwww!!!!!!!!!!!!!!!!!!!1

Answers

Answer:

what is the question?

Step-by-step explanation:

lol

can someone help me with this real quick?​

Answers

Answer:

11. A) 6x = 13

Step-by-step explanation:

11. Subtract 10 from both sides to make it equal 6x=13

12. For #12... None of the answers seem right? If you distribute and subtract, it should be

-4x + 44 = 66 then

-4x = 22...

Sorry if this didn’t help much, I know that 11 is right though ;)

1. Two students went to McDonald's. They each bought the same snack, which included a shake
and a burger. The shakes cost $2 each. In total, they spent $12.
Part A: Enter an equation to represent this equation. Let x represent the cost of one burger.
Part B: Enter the cost of one burger.

Answers

Answer:

12-2=10 b=10

Step-by-step explanation:

uHhhhhHHHhHhHhHh heLp?

Answers

Answer and Step-by-step explanation:

Use the Pythagorean theorem to solve.

Plug in the value 5 for a, and 6 for b. c will stay as c.

[tex]a^{2}+ b^{2}= c^{2} \\\\\\5^{2}+6^{2}= c^{2} \\\\\\25 + 36= c^{2} \\\\\\61 = c^{2} \\\\\\\sqrt{61} = c[/tex]

5 squared is equal to 25, and 6 squared is equal to 36.We add those together to get 61.

We then square root both sides of the equation to get c by itself, resulting in the square root of 61.

The square root of 61 becomes 7.810249676

c = 7.8102

To check, you would multiply that number by itself, then you will get 61. With the rounded version, you would get close to 61.

If you got 7.08 as an answer, then multiplying it by itself results in 50.1264, which isn't close to 61.

#teamtrees #PAW (Plant And Water)

Find the measure of one of the interior angles of a
regular polygon with 12 sides.
A 30°
B 165°
C 150°
D 2160°

Answers

1)(12-2)*180=1800
2)1800\12=150
So the answer is C

math work pls help :)​

Answers

Answer:

HL

Step-by-step explanation:

It is HL because they are right angles.


a-shifted 4 units right and 3 units up
B-shifted 3 units right and 2 units up
C-shifted 3 units right and 3 units up
D.shifted 2 units right and 3 units up .

PLS HELP!! ASAP

Answers

The answer should be B- shifted 3 units right and 2 units up. Sorry if it’s wrong!!! Good luck! :)

If Amy has two apples and drops one, how many does she have then?

Answers

Answer:

one

Step-by-step explanation:

Answer:

one

Step-by-step explanation:

one

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