Mathematics Middle School

help me with both questions
plz read carefully so you can help me

Help Me With Both Questions Plz Read Carefully So You Can Help Me

Answers

Answer 1

Answer:

2. Both

3. e = 3, f = -5, g = 2

Step-by-step explanation:

2. Order doesn't affect product

3. You get e • f = -15, e • g = 6, f • g = -10 from the problem.

   e = -15/f    (solve for e)

   (-15/f) • g = 6    (plug into second equation)

   (-15g/f) = 6    (multiply)

   -15g = 6f    (multiply)

   (-5g/2) = f    (divide)

   (-5g/2) • g = -10    (plug into last equation)

   (-5g^2)/2 = -10    (multiply)

   -5g^2 = -20    (mulitply)

   g^2 = 4    (divide)

   g = 2    (square root)

   e • g = 6    (plug in for g, solve for e)

   e • 2 = 6

   e = 3

   f • g = -10    (plug in for g, solve for f)

   f • 2 = -10

   f = -5

I don't know if your teacher made a typo because I tried this multiple times and got the same answer. I don't know how e is negative.

Answer 2

Answer:

1. both are correct

2.f=5 g=-2 e=-3

Step-by-step explanation:

for number two, because e is negative you can logically figure out that f is positive and g is negative because a negative times a negative is a positive and a negative times a positive is a negative. you are then left with

-e times f=

-e times -g=

f times -g=

then by the process of substitution and trial and error, you can logically conclude that f=5 g=-2 e=-3

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Answers

Answer:

6

7

3

52.5

Step-by-step explanation:

A right Triangle XYZ has Vertices X(−2, −1) and Y(1, 1) and a right angle at Vertex Z.
What could the coordinates for Vertex Z be? Write down two coordinates that could be it.

Answers

Answer:

x(1,4)  Y(2,3)  and Z(5,y)

Step-by-step explanation:

Answer:

x(1,4)  Y(2,3)  and Z(5,y)

Step-by-step explanation:

What is the angle of GHD?

Answers

The answer is 102


3x+2x+50=180
5x+50=180
5x+50-50=180-50
5x=130
5x/5=130/5
X=26
2(26)+50=102

VOLLEBALL.Pick one volleyball skill and cover the most important content for learning that skill.

Answers

Answer:

The six basic volleyball skills are passing, setting, spiking, blocking, digging, and serving. Passing is often thought of as the most important skill in volleyball. If you can't pass the serve, then you won't ever put your team in a position to score a point. The importance of serving is often undervalued.

Step-by-step explanation:

hope this helps...

have a good day

i need help asap plsss

Answers

Radius = 5 cm

Height = 8 cm

Volume = πr²h

Volume = π(5 cm)² × 8 cm

Volume = π × 25 cm² × 8 cm

Volume = 200π cm³

The answer is C 200 hope that helps

Write the equation of the line in slope-intercept form using y=mx+b​

Answers

Answer:

y=-5x

Step-by-step explanation:

m is the slope (rise/run)

b is the y-intercept!!!

Answer:

y=-5x

I'm assuming this is right because I got the same thing as the other guy and you all thanked him/her XD

If a circular swimming pool is 20 yards across, how big would a pool cover have to be to sit exactly over the surface of the water? (Assume 3.14)

A.31.4 yds
B.3140 yds
C.314 yds
D.40 yds

Answers

3140 yds is the right answer to your question

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

1. -12 = 12

2. 34 = -34

3. 0 = -0

4. 7 < -8

5. -2 > -4

6. 4 > 0

7. 1 > -1

8. -5 < -2

9. -6 < -3 < -2 < 0

10. -5 < -1 < 2 < 8

11. a. Sapporo, Moscow, Bangor, Barrow

What the other person said ! I agree with them

14 + 5 = -5x - 6 (-3x + 15) + 5

Answers

Answer:

x=8

yeah this answer is too short so dont mind this

Answer:

81

i'm truly sorry if this is wrong

Step-by-step explanation:

answer this pls

equation 9(2j + 5j).

use mathematical properties to create two expressions that are equivalent to the expression you created

Answers

the solution is 9(7j)
The answer is 63j

9(2j+5j)=9X7j=63j

Hannah's hair was 18 inches long .Three years later it was 33 inches long. What was the percent increase,to the nearest hundredth, of Hannah's hair length?

Answers

Answer:

54%

Step-by-step explanation:

if you take 18 and divide it by 33 you would get 54

The 83.33 percent increase in Hannah's hair length.

What is the meaning of percentage?

A percentage is a number or ratio expressed as a fraction of 100.

Hannah's hair was 18 inches long

After three years,

it was 33 inches long

[tex]Difference\ (increase\ in\ length) = 33-18=15\ inches[/tex]

[tex]percent\ increase = \dfrac{Increase}{Original\ Number}\times100=\dfrac{15}{18}\times100=83.3333\\\\percent\ increase = 83.33 (nearest\ hundredth)[/tex]

Hence 83.33 % increase in Hannah's hair length after three years.

learn more about percentages:

https://brainly.com/question/14351508

#SPJ2

Complete the real-world situation that could be modeled by the equation 140 − 4x = 160 − 8x.


Xavier has $140 in his lunch account. He spends $____for lunch each day. Zack has $____in his lunch account. He spends $____ each day. After how many days will the boys have the same amount of money in their accounts?

HELPPP PLZZZ

Answers

The answer is X=5
Explanation:

In 24 weeks Amanda earned $4,924 selling cars. She earns the same amount of money each week. Let “n” stand for the amount she earned each week. How much money does Amanda earn in one week?

explain how you got your answer 9basically put the work in the explanation

Answers

Answer:

Let's assume that Amanda earns the same amount of money each week, and we'll represent that amount as "n".

We are given that in 24 weeks, Amanda earned a total of $4,924. We can set up an equation to represent this information:

Total earnings = Amount earned per week * Number of weeks

$4,924 = n * 24

To find the amount Amanda earns in one week, we need to solve for "n". We can do this by dividing both sides of the equation by 24:

$4,924 / 24 = n

To calculate this, we can use a calculator or perform long division:

n ≈ $205.17

Therefore, Amanda earns approximately $205.17 in one week.

Step-by-step explanation:

A grandfather clock was originally priced at $350 but went on sale for 80% off. If Elizabeth bought the grandfather clock and paid 10% sales tax, how much did she pay in total?

Answers

Answer:

105

Step-by-step explanation:

Answer:

$77

Step-by-step explanation:

80% of 350 is 280

it is $280 off so 350-280=70

then the tax, 10% of 70 which is 7

the answer is $77 because 70+7=77

PLEASE HELP IM BEING TIMED! I WILL GIVE BRAINLIEST

Answers

63 is the answer it’s 63

Answer:

21

Step-by-step explanation:

do you guys know which coordinates im supposed to graph on here?

Answers

Answer:

SOLVE FOR Y

graph y= 2x + 2

sp graph the points

(0,2) and then (1,4)

connect the points and extend the line.

Step-by-step explanation:

add 2x to both sides

-2x+y=2

+2x     +2x

y= 2+2x

reverse

y= 2x+2

A block of cheese is in the shape of a rectangular prism with a width of 2.5 inches and a height of 5 inches. The volume of the block of cheese is 75 cubic inches. What is the length of the block of cheese?

Answers

Answer:

The formula for volume is l x w x h.

Step-by-step explanation

To find the missing link, we do the equation backwards.

l x 2.5 x 5 = 75

If we divide 75 by 5 then by 2.5, we get 6 which becomes our length.

To check, do 5 x 2.5 x 6 which should equal 75

6 is your length

-1/2+-5/6 thank you

Answers

Answer:

-1 1/3 hope this helps

Step-by-step explanation:

~*Please help*~ what is x [ 82.24 =- 8.48 + 4x ]

Answers

Answer:

[tex]x=22.68[/tex]

Step-by-step explanation:

[tex]82.24=-8.84+4x[/tex]

+8.84         +8.84

[tex]90.72=4x[/tex]

/4         /4

[tex]22.68=x[/tex]

X=22.68 or X= 567/25 or X= 22 17/25

Can someone plssss help?

Answers

Answer: Part B is D. Account 4, Part C is D. Accounts 1, 3, and 5.

i need help pleaseee

Answers

Answer:

The answer is option B.

Step-by-step explanation:

A jar of olives had a circumference of 11.99 cm. What was the approximate diameter of the jar?
Use 3.14 for π.



A. 3.42 cm
B. 3.62 cm
C. 3.82 cm
D. 3.92 cm

Answers

the answer is c . 3.82
The answer of your question is c


This MIGHT be the last thing i need help on. Can u pls help

Answers

Answer: im positive its b

Step-by-step explanation:

Answer:

Irregular Quadrilateral

Step-by-step explanation:

It has four sides (not a pentagon).

None of it's angles/sides are equal (classifies as irregular).

help quick please please

Answers

Answer:

57.5

formula

A= (a+b/2)h

57.5 is the answer
Formula: A= (a+b/2)h

help wit 3 and 4 for brainliest

Answers

Answer:

Answer for num.4 is B

For number 3 the the rate of change for function A is 10

The rate of change for function B is -5

and the highest function is Function A!

Have a great day!!! < 3

Step-by-step explanation:

The pyramid below has a volume of 240 cm3 and a height of 4 cm. What is the area of the base?


B = 60 cm2

B = 2880 cm2

B = 240 cm2

B = 180 cm2

Answers

ANSWER: B= 180 cm2

Sorry if it’s wrong I’m not 100% positive this is the right answer. :)

Does anyone know this stuff if you do pls help me

Answers

The second picture last question is A

The distance that a object covered in time was measured and recorded in the table below. What equation describes the motion?
y = 1.5x + 2.5
y = -1.5x
y = -1.5x + 2.5
y = 1.5x

Answers

Answer:

y = 1.5x + 2.5

Step-by-step explanation:

Using a graph is the simplest way to find this

Happyville received 6.23 mm of rain last year. Busyville received 4.9 inches of rain. What is the difference in rainfall between the two towns? Please, I need the answer ASAP!!

Answers

Answer:

The difference in rainfall between the two towns are 118.23 mm.

Step-by-Step explaination:

At first covert 4.9 inches into millimeters.(You will get 124.46 mm)

Then substact the numbers.( 124.46-6.23) {remember to substract from the greater number}

And you will get the answer. ( Answer: 118.23)

I HOPE THIS WILL HELP YOU!!!

The measures of the angles of a triangle are shown in the figure below. Solve for x.
(8x-9)°
63°
70°

Answers

Answer:

x = 7

Step-by-step explanation:

(8x - 9)° = 180° - ( 70° + 63° )

8x - 9 = 47

8x = 47 + 9

x = 56 ÷ 8  

x = 7

Answer:

x=7

Step-by-step explanation:

63˚+70˚ = 133˚

180˚ - 133˚ = 47˚

(8x-9)˚ = 47˚

8x7=56

56-9=47˚

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