Mathematics Middle School

help me quickly please!!
if
AC= 143
BC= 8x+4
AB= 7x+4
find BC.

Answers

Answer 1

Answer:

BC is 12x. An addition problem.

Step-by-step explanation:

Let me know if I am wrong.

Answer 2

Answer:

Step-by-step explanation:

Related Questions

So i picked b because it looked like the correct one? can someone tell me if it is

Answers

Yeah you are correct

B is the corect answer

complete the table for given rule

Answers

Answer:

x y

4/3 2

8/3 10/3

22/3 24/3

Step-by-step explanation:

Substitute y with 2 for the first problem

2=x+2/3

Subtract 2/3 on both sides:

4/3

Thus:

x y

4/3 2

Now Substitute x with 8/3 for the second problem

y=8/3+2/3

Add:

y=10/3

Thus:

x y

8/3 10/3

Now Substitute x with 8/3 for the third problem

y=22/3+2/3

Add:

y=24/3

Thus:

x y

22/3 24/3

Thus the Full equation is:

x y

4/3 2

8/3 10/3

22/3 24/3

Hope this helps!

Answer:

x y

4/3 2

8/3 10/3

22/3 8

Step-by-step explanation:

y=x+2/3

2=x+2/3

2-2/3=x+2/3-2/3

6/3-2/3=x

4/3=x

y=x+2/3

y=8/3+2/3

y=10/3

y=x+2/3

y=22/3+2/3

y=24/3

Sean's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 18 coffees in all, 9 of which were regular. What percentage of the coffees were regular?

Answers

Answer:

50% of the regular coffee's were regular

50%
Explanation:
multiply 9 • 100
the divide 900 into 18
it should give you 50

Consider the points (-5,2) and (3,-9)
What's the horizontal distance between the two points?

Answers

Answer:

The distance between the 2 points is about 13.6

Step-by-step explanation:

Picture the 2 points on a graph, and then look at the distance between them as the hypotenuse of a right triangle. You can easily find the length of the legs of that triangle, and with those legs, you can use the pythagorean theorem to calculate the length between the points.

The length of one leg is the distance between the 2 x-coordinates, between -5 and 3, so that's 8.

[tex]3--5=3+5=8[/tex]

The length of the other leg is the distance between the y, between 2 and -9.

[tex]-9-2=-11[/tex]

That's just a distance of 11, as there's no such thing as negative distance.

Now we have the legs, so we can find the hypotenuse:

[tex]a^2+b^2=c^2\\8^2+11^2=c^2\\64+121=c^2\\c^2=185\\c\approx13.6[/tex]

HELP PLS IT DIFFICULT ND THX U.

Answers

Answer:

Circumference 1: 5

Circumference 2: 3.5

Circumference 3: 3

Step-by-step explanation:

hope this helped

Answer:

Circumference 1: 5

Circumference 2: 3.5

Circumference 3: 3

Step-by-step explanation:

Find all the factors of 15. A) 1, 3, 5, 15 B) 2, 3, 5, 7, 15 C) 1, 2, 3, 5, 7, 15

Answers

Answer: it is b

Step-by-step explanation:

trust its b

The answer is A ) 1 , 3 , 5 , 15

How to calculate distance between two points (-3,2) and (3,0).
And pls find the radical

Answers

√74
Explanation:
To calculate the distance use the
distance formula
d=√(x2−x1)^2+(y2−y1)^2

−−−2
where
(x1,y1)and (x2,y2)
are 2 coordinate points
The 2 points here are (-3 ,7) and (4 ,2)
let(x1,y1)=(−3,7) and (x2,y2)=
(4,2)⇒d=√(4−(−3))2+(2−7)2=√49+25=√74←in radical form

I think it’s y=3x-9?

Douglas went to Charlies General Store to get gas. He paid $52.20 for 20 gallons of gas. How much would he have paid if he got 25 gallons instead

Answers

$52.20/20= $2.61 , which equals how much he paid per gallon.

$2.61x25= $65.25 for 25 gallons of gas

Answer: $65.25

52.20 divided by 20 is 2.61. 25 multiplied by 2.61 is 65.25

15x = 6x - 90
i keep getting two

Answers

Answer: If you are trying to solve for x then I keep getting -10 but I'm gonna try again.

Answer:

Its answer is - 10

I think you did it another way. There is the process

Step-by-step explanation:

15x = 6x - 90

or, 15x - 6x = - 90

or, 9x = - 90

or, x = - 90 / 9

or, x = - 10

Elena is buying cups and plates for her party. Cups are sold in packs of 8 and plates are sold in packs of 6. She wants to have the same number of plates and cups.
Find a number of plates and cups that meet her requirement.

Answers

Answer:

24 of each; 3 packs of cups and 4 packs of plates

Step-by-step explanation:

If you want to know the minimum amount of plates and cups she can get, it would be 24.

The factors of 8 are:

8, 16, 24, 32, 40, 48, 56, 64, 72, 80

The factors of 6 are:

6, 12, 18, 24, 30, 36, 42, 48, 54, 60

The least common factor they share is 24.

She can buy 3 packs of cups and 4 packs of plates.

Elena should buy 20 pack of plates

All of the following are equivalent to 2(2a + b) + 8, except _____.

4 a + 2 b + 8
2(2 a + b + 4)
4( a + b + 2)
4 a + 2( b + 4)

Answers

Answer:

The answer is : 4a + 2b + 8

Step-by-step explanation:

2x2a = 4a

2xb = 2b

Order from least to greatest: 11
6
, 2
3
, 11
2
, 5
6
.

A number line contains the numbers 0, 1, 2. There are 6 equal spaces between each number.
Which list shows the fractions ordered from least to greatest?
Two-thirds, StartFraction 5 Over 6 EndFraction, 1 and one-sixth, 1 and one-half
StartFraction 5 Over 6 EndFraction, two-thirds, 1 and one-sixth, 1 and one-half
1 and one-sixth, two-thirds, 1 and one-half, StartFraction 5 Over 6 EndFraction
1 and one-sixth, 1 and one-half, two-thirds, StartFraction 5 Over 6 EndFraction

Answers

Answer:

6, 25, 62, 311

Step-by-step explanation:

hope this helps you!

23,56,112,and 116 this is from least to greatest.

Madeline is scuba diving at an elevation of −71.8 feet when his friend signals to come higher. Madeline makes three ascents, each an equal distance, to reach an elevation of −15.7 feet, where her friend is located.

What was Madeline's elevation after her first ascent?

Enter your answer as a decimal

Answers

Answer:

I believe its 112.26?

Step-by-step explanation:

Yes it is 112.26 I hope this really does help

Someone help me with this please, I really need help, and it's due tmrw...PLEASE

Answers

Answer:

the last one

Step-by-step explanation:

3.5(w) 3.5 per week or 3.5 change per week

hope this was helpful

I think it is D. 3.5 is the amount it grows every week which is why it is multiplied by the number of weeks.

When mom is doing cleaning on her own it takes 2 hours. When dad does cleaning, it takes 4 hours. How long will it take if both of them work together?

Answers

2 hours because mom will just kick dad out since he’s not helping much

It will take them 8 hours

n is m% of what number?

Answers

Answer:

100

Step-by-step explanation:

n/m/100

n is divided by m%

m%=m/100

m%=m/100 means to multiply. n=(m/100)•x

Part B Using the area you found for the base of the tower, what is its approximate volume? Remember to include units in your answer. And the area of the base of the tower is 1,962.5 square feet. pls help

Answers

If you are just trying to find the volume of the cylinder shown the answer should be 25pi squared * 20 which is 39269.91 cubic ft. But I’m not quite sure how the number for the base of a tower is incorporated into the equation.

Which calculation and answer show how to convert 3/12 to a decimal?

Answers

Answer:

Step-by-step explanation:

3/12= 1/4=0.25

Answer:

Step-by-step explanation:

step 1

Address input values.

Input values:

The fraction number = 3/12

step 2

Write it as a decimal

3/12 = 0.25

0.25 is the decimal representation for 3/12

For Percentage Conversion :

step 1

To represent 0.25 in percentage, write 0.25 as a fraction

Fraction = 0.25/1

step 2

multiply 100 to both numerator and denominator

(0.25 x 100)/(1 x 100) = 25/100

25% is the percentage representation for 3/12

An arts academy requires there to be 4 teachers for every 76 students and 3 tutors for every 27 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 54 students?

Answers

Answer:

The answer is 19 students per tescher

Step-by-step explanation:

76 ÷ 4 =19

Per teacher there would be 19 students.
76 divided by 4 = 19

Per Tutor there would be 9 students
27 divided by 3 = 9

Hope this helped

You don't have to solve the K and the equation for me, I know how to do it. I just don't know what to do for the table. It confused me...

Answers

Answer: x=18 y=2 and then it is also equal to 5.

Step-by-step explanation: all you have to do is find the ratio in the table, by dividing 48 by 8 = 6, this lets us know that the ration is 6 to 1. 6 is the x value and 1 is the y value.

X=18
Y=2
It’s equal to 5
I hope it’s right

Choose the mixed number that is equivalent to this decimal.
3.242424…
A)3 8/33
B)3 12/25
C)3 1/4
D)3 1/5

Answers

Answer:

Step-by-step explanation:

I think this is the answer

The answer is A

if you put all of these in a calculator 3 8/33 is the only one that gets 3.242424242

Solve for h.

h - 45 = -35
A. h = -10
B. h = 10
C. h = -80
D. h = 80

Answers

B. h = 10

Explanation:
h - 45 = -35
+45 +45
h = 10

Select the locations on the number line to plot the points −17/8 and 13/8.

Answers

Answer: With this information the answer would be GO down twice into the negatives and make you plot point, next go down eleven times and make your plot point, and last go down seventeen times and make your plot point.

Step-by-step explanation: What you have to do is make the number line with a zero at in the middle on the left of the zero you go down into the the negative numbers and on the right you go up into the positive numbers

Step-by-step explanation:

-17/8 < 13/8

♡Discussion:

≤ Means maximum≥ minimum > means greater than< means less

Evaluate the equation.

3w = 96
A. w = 288
B. w = 32
C. w = -32
D. w = -288

Answers

Answer:

Step-by-step explanation:

when you bring 3 to the right side its not working so when you divide it (cause you don't want any numb with the w) you get 32 :)

Answer:

Step-by-step explanation:

3w=96

W=96/3

W=32

Is using the associative property of addition a good strategy for simplifying (4/3 + 2/3) + 2? Why or why not?

Answers

Answer:

Easy way

Step-by-step explanation:

(4/3 + 2/3) + 2

= 2 + 2

Oviously (4/3 + 2/3) is directly 2.

The density of a substance is the mass of the substance per unit of volume. The density of the element Americium is inversely proportional to its volume. The graph shows the relationship between the density of Americium, p grams per cubic centimeters, and its volume, v cubic centimeters.

Answers

Answer:

The density of a substance is the mass of the substance per unit of volume.

Step-by-step explanation:

Identify the parts of the expression 4.2m + (8 , 2) - 6

a. What are the terms of the expression?
b. Which term is the product of two factors?
c. Which term is a quotient?
d. Which term is a constant numerical value?

Answers

Answer:

Step-by-step explanation:

how many times can 7 go into 1000

Answers

Answer:

7 can go into 1000 142 6/7 times. This is a remainder equation, but that is how many times 7 can go into 1000.

Hope this helps!

Select the expressions that are equivalent to 5(6a).

Answers

Answer:

Not B

Not C

Not D

Step-by-step explanation:

Answer:first one

Step-by-step explanation:

Given that the function graphed is ƒ(x), what is ƒ(−5)?

I will give the best answer brainliest!

Answers

Answer:

D. 5

Step-by-step explanation:

yeah-ya............. right?

The correct answer is is answer choice D

Other Questions

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help me quickly please!! if AC= 143 BC= 8x+4 AB= 7x+4 find BC.

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help me quickly please!!
if
AC= 143
BC= 8x+4
AB= 7x+4
find BC.