Mathematics Middle School

ANSWER ASAP!!









remember to show work​

ANSWER ASAP!! Remember To Show Work

Answers

Answer 1

Answer:

1. 7x+5y=19    

(+)-7x-2y=-16       step one

____________

[tex]\frac{3y}{3\\}[/tex]=[tex]\frac{3}{3}[/tex]                   step two

y=1

____________

since you have the value of y u can plug it in in either of the equations.

7x+5(1)=19        step three

____________

7x+5-5=19-5     step four

____________

[tex]\frac{7x}{7}[/tex]=[tex]\frac{14}{7}[/tex]

x=2                     step five

____________

You can check whether the answers are correct by plugging them back in.

7(2)+5(1)=19

14+5=19

19 equals 19 so it checks.

You can do the same thing for the rest.

Related Questions

You are measuring the height of a Ferris wheel at an amusement
park. You are standing 125 feet from its base. You measure the angle
of elevation from a point on the ground to the top of the Ferris wheel
to be 51°. Estimate the height of the Ferris wheel. Round your
answer to the nearest foot.

Answers

Answer:

154 ft

Step-by-step explanation:

A right triangle is formed, where the height of the wheel (h) is one leg,  the distance between you and the base of the wheel is the other leg, and the distance between you and the top of the wheel is the hypotenuse (the angle included between the last two sides is 51°)

From definition:

tan(51°) = opposite/adjacent

tan(51°) = h/125

h = tan(51°)*125

h = 154 ft

A bag contains 2 red, 5 blue, and 7 yellow marbles. Find the probability of drawing a yellow or a red.

Answers

Answer:

drawing a red marble would be 2 in a 14 or 1/7 chance n drawing a yellow would be 1/2.

The probability of drawing a yellow marbles is 1/2

What is probability ?

Probability means the quality or state of being probable; the extent to which something is likely to happen or be the case

We have,

Bag contains marbles

Red=2

Blue=5

Yellow=7

Total marbles in bag = 2+5+7=14

The total number of ways of selecting one marble out n(s) = 14[tex]C_{1}[/tex]

                                                                                                      = 14 ways

Let E be the event of selecting yellow marbles

Since, the bag contains 7 yellow marbles

one yellow marble can be draw from 7 yellow n(E) =7[tex]C_{1}[/tex]

                                                                                        = 7 ways

We know the formula,

P(E)= n(E)/n(s)

       = 7/14

        = 1/2

Hence, the probability of drawing a yellow marbles is 1/2

To learn more about probability from here

https://brainly.in/question/3144050

#SPJ2

HELP ILL GIVE YOU 15 POINTS !!!!!! ill mark you as brainliest too if its right

Answers

Answer:

B.

Step-by-step explanation:

[tex]\frac{2}{5} *4=\frac{8}{5}[/tex][tex]x[/tex]

[tex]\frac{2}{5} *-8=-\frac{16}{5}[/tex]

Answer:

b

Step-by-step explanation:

sara and megan wanted souvenirs when on vacation. sara bought 3 magnets and 4 picture frames for $41. megan bought 2 magnets and 5 picture frames for $39. how much does magnet cost? how much does the picture frames cost?

Answers

Answer:

idk

Step-by-step explanation:

sorry

solve: 3(x+4)= 12 + 3x

Answers

Answer:

All solutions

Step-by-step explanation:

Regardless of what x equals the answer will work

Answer:

x=2

Step-by-step explanation:

3(x+4)= 12 + 3x

x=2              12+3x

3(2+4)          x=2

3x6                3x2=6

18                      12+6=18

Amanda has 14 coins in her pocket that equal 54 cents. All the coins are nickels, n, and pennies, p. Which combination of coins
does Amanda have? Use the table to answer the question.

Answers

10 nickels, n, and 4 pennies, p.

Answer:

The answer to this question is c

Step-by-step explanation:

10 nickels and 4 pennies

What is the graph of y^2/16+x^2/9=1

Answers

Answer:

is c

Step-by-step explanation:

use math    way if you have any doubts

Answer:

the correct graph is graph c.

Step-by-step explanation:

i did the asignment on edg

Please help me I need this done not a lot of work but please get it done with good credit for good rating and reward!

Answers

Answer:

1. Diameter

2. more than 1 but less than 2

3. ans: 3.14

4. ans: 3.142

5. 33.7 inches

6. a) 100.57 b) 2.36 (2 dp) c) 236.66 d) 113.14 e)20.11

f) 86.11

help me with number 3 pleaseee

Answers

Answer:

$25.65

Step-by-step explanation:

135 (19%)

$25.65

plz help i need this asap

Answers

Answer:

option B

Step-by-step explanation:

simplify the expression:
20m^3
over
32m^5

Answers

Answer:

5 over 8m ^2

Step-by-step explanation:

20m^3

32m^5

m^3 divided by m^5 equals one over m^2.

20 divided by 32 is 5 over 8.

Multiply these and you'll get 5 over 8m^2

Answer:

0.00023841857

125/524288

Step-by-step explanation:

Decimal form: 0.00023841857

Fraction Form: 125/524288

What is the lateral surface area of this triangular prism in square centimeters?

Answers

Answer:

lateral surface area of the triangular prism = 128 cm²

Step-by-step explanation:

The question is incomplete the picture below represents the complete question.

Lateral surface area of a triangular prism = PH

where

p = perimeter of the triangle

H = height of the prism

perimeter = 5 + 5 + 6 = 16 cm

height of the prism = 8 cm

Lateral surface area of a triangular prism = Perimeter of the triangle × height of the prism

lateral surface area of the triangular prism = 16 × 8

lateral surface area of the triangular prism = 128 cm²

y = − 1/3 x + 2 y = x + 2

Answers

The person above me is correct

WILL MARK BRAINLIEST

Prism M and pyramid N have the same base area and the same height. Cylinder Pand prism Q have the same height and the same base
perimeter. Cone Z has the same base area as cylinder Y, but its height is three times the height of cylinder Y.
The figures_____and_____have the same volume.
1.)
Prism M
Cylinder P
Cone Z
2.)
pyramid N
Prism Q
Cylinder Y

Answers

Answer:

Answer Cone Z and Cylinder Y.

Step-by-step explanation:

The relationship between the volume of the cone and the volume of the cylinder with the same height and same base is the volume of the cone is 1/3 of the volume of the cylinder.

hope that helps love!

what is the solution of 3x+8/x-4>0

Answers

Answer:

x > 0

This should be the answer :D

Answer:

X>0

Step-by-step explanation:

In ΔTUV, t = 410 cm, ∠U=27° and ∠V=78°. Find the length of v, to the nearest 10th of a centimeter.

Answers

Answer:

[tex]v \approx 415.2\,cm[/tex]

Step-by-step explanation:

The angle T is:

[tex]\angle T = 180^{\circ} - 27^{\circ} - 78^{\circ}[/tex]

[tex]\angle T = 75^{\circ}[/tex]

Now, the length of v is determine by the Law of Sines:

[tex]\frac{410\,cm}{\sin 75^{\circ}} = \frac{v}{\sin 78^{\circ}}[/tex]

[tex]v = (410\,cm)\cdot \left(\frac{\sin 78^{\circ}}{\sin 75^{\circ}} \right)[/tex]

[tex]v \approx 415.2\,cm[/tex]

Use right triangle ABC. The figure is for reference only and is not drawn to scale. In a 30-60-90 triangle, the shorter leg had a length of 8. What is the length of the longer leg?

Answers

Answer:

In a 30 60 90 triangle, the longer leg = shorter leg * square root (3)

longer leg = 8 * square root (3) = 8 * 1.7320508076

= 13.8564064606

Step-by-step explanation:

PLEASE ANSWER ASAP! 48 POINTS!!

IF YOU ANSWER JUST FOR POINTS I'LL REPORT YOU!!!

Explain how solving -7y > 161 is different from solving 7y > -161.

Answers

the first choice has a negative 7 and the second choice has a negative 161 these are both negatives in different places which cause a different reaction

In 2010 Harry bought 200 shares in ford motors company stock for 35.21 per share in 2018 he sold the shares for 26.78 each express his capital loss as a percent

Answers

Answer:

23.94%

Step-by-step explanation:

In 2010, Harry bought 200 shares in ford motors company stock for $35.21 per share. This means that the cost price of buying the 200 shares is:

C = 200 * 35.21 = $7042

In 2018, he sold the shares for $26.78 per share. The selling price of 200 shares is:

S = 200 * 26.78 = $5356

The loss is given as the cost price minus selling price. That is:

L = CP - SP

L = 7042 - 5356

L = $1686

Percentage loss is given as loss divided by cost price multiplied by 100:

%L = 1686 / 7042 * 100

%L = 23.94%

x2 + y2 + 6x – 4y - 15 = 0
Find the center and radius of the circle

Answers

Radius is square root of square root of 28 and center is (-3,2)

A skate board was originally priced at £100 on Thursday.
On Friday the price was reduced by 50%. On Saturday, Friday's price was reduced by a further 30%. On Sunday, Saturday's price was reduced by a final 10%.
What was the final percentage reduction on the original price?

Answers

Answer:

31.5

Step-by-step explanation:

50 percent of 100 would be 50, so you subtract 50 from 100, and 30 percent of 50 is 15, so you subtract 15 from 50 and then get 35, which 10 percent of is 3.5, and finally you subtract 3.5 from 35 and you end up with 31.5.

write an equivalent ratio to 2:7​

Answers

Answer:

4:14

Step-by-step explanation:

I need help like frfr
Before today over . Someone help me

Answers

I think (I’m not fully sure) it might be 40

Answer:

The answer is 49

Step-by-step explanation:

PLEASE MARK AS BRAINLIEST

HELPING ON OTHER OF YOUR PROBLEMS

Which of the following equations is an example of a direct variation?

y = 3

x + 2y = 6

x = 4

y = 3.14 x

Answers

Answer:

ummm, I'm not sure but I think that it's the second or the last one. ‍

Surface area and volume

Answers

I am pretty sure the answer is find s

D.

WILL GIVE BRAINLIEST. Billy ordered a pizza with a crust that is 10π inches long. What is the area of the pizza?

Answers

Answer:

~31.42

Step-by-step explanation:

I multiplied 10 x pi and it gave me 31.4159265359 and I rounded up to 31.42

What is the relationship between the diameter and radius?
(1 Point)
d=r2
2r=d
2d=r
O
rxr=d

Answers

Answer:

2r = d

Step-by-step explanation:

Diameter is two times of radius.

Diameter = 2 x radius

2 r = d

1. 3x + 7 = 13 (x = -2; x = 2; x = 5)

Answers

Answer: x=2

Step-by-step explanation:

I am assuming you are asking which x fits the equation. To see if x works for the equation, you would plug it in.

x=-2

3(-2)+7=13

-6+7=13

1≠13

x=2

3(2)+7=13

6+7=13

13=13

x=5

3(5)+7=13

15+7=13

22≠13

a. 45
b. 30
c. 85
d. 90

Answers

I’m pretty sure it’s C but idk? Sorry

Two angles are supplementary. If the m∠A is five times the sum of the m∠B plus 7.2°, what is m∠B?

Answers

Answer:

m∠B = 24°

Step-by-step explanation:

m∠A + m∠B = 180°

m∠A = 5 ( m∠B + 7.2 )

5 ( m∠B +7.2 ) + m∠B = 180

5m∠B + 36 + m∠B = 180

6m∠B = 180 - 36

6m∠B = 144

m∠B = 24°

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