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saul85 [17]
4 years ago
7

Pls help me with the question above thanks.... AFAP(as fast as possible)

Mathematics
2 answers:
Katyanochek1 [597]4 years ago
6 0
\dfrac{a}{3}  +  \dfrac{a-2}{4}  = 8

Change the denominator to be the same:
\dfrac{4(a)}{4(3)}  +  \dfrac{3(a-2)}{3(4)}  = 8

Simplify:
\dfrac{4a}{12}  +  \dfrac{3a-6}{12}  = 8

Combine into single fraction:
\dfrac{4a + 3a - 6}{12}   = 8

Cross multiply:
\dfrac{7a - 6}{12}   = 8

Simplify:
7a - 6= 8 \times 12

Evaluate the right side:
7a - 6= 96

Add 6 to both sides:
7a = 96 + 6

Evaluate right side:
7a = 102

Divide by 7 on both sides:
a = 14 \dfrac{4}{7}



Mashutka [201]4 years ago
3 0
A /3 + (a - 2) / 4 =  8

multiply through by 12:-
4a + 3(a - 2) = 96
7a = 102
a = 14.57 to nearest hundredth


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Solve the system of equation <br> Y=4x-11<br> Y=x+13<br><br> X=<br><br><br> Y =
Phoenix [80]

Answer:

(8,21)

Step-by-step explanation:

Since both equations equal y, set both equaitions equal to each other

and solve for x

4x-11=x+13 , subtract x from both sides

3x-11=13, add eleven to both sides

3x=24, divide both sides by 3 to get x alone

x=8

Substitute x=8 into either equation to solve for y

y=4(8)-11

y=32-11

y=21

5 0
4 years ago
Find the x intercept
Dennis_Churaev [7]

Answer:

the x-intercepts are (5, 0) and (-3, 0).

Step-by-step explanation:

The standard equation of a vertical parabola with vertex at (h, k) is

y = a(x - h)^2 + k.  

Here we are told that the vertex is at (1, -16), which means that h = 1 and y = -16.  Thus, we have:

y = a(x - 1)^2 + (-16).

We are told also that the graph passes through (0, -15).  Substituting -15 for y and 0 for x, we get:

-15 = a(0 - 1)^2 - 16, or

-15 = a - 16

Then a must be 1, and the equation of the parabola is

y = (x - 1)^2 - 16.

Now to find the x-intercepts:  Set y = 0 and solve for x:

0 = (x - 1)^2 - 16, or

(x - 1)^2 = 16, or

x - 1       = ±√16 = ±4

Then x = 1 ± 4, or x = 5 or x = -3, so the x-intercepts are (5, 0) and (-3, 0).

6 0
3 years ago
Simplify the expression 2(x-6)+2(8)
jolli1 [7]

Answer:

2x+4

Step-by-step explanation:

Distribute:

=(2)(x)+(2)(−6)+(2)(8)

=2x+−12+16

Combine Like Terms:

=2x+−12+16

=(2x)+(−12+16)

=2x+4

8 0
3 years ago
After 5 throws in a game of darts, Brent's mean score was 32. Calculate his total score.
ehidna [41]

1.To know this answer, we need to know some vocabulary that's used in t. Most people don't know how to solve questions if they have hard Vocabulary and what the question is Asking

Mean=The average of all his throws

It's asking us to calculate his total score  

2. Find Clues to help you solve word problems

Finding clues in Word Problems is a very important part a lot of people skip but this helps you solve the question easier

5 throws and Mean Score is 32 are the clues

3. Guess and check

The method to this thingy is called guess and check. There is another method which is slightly harder and i just don't want to do it.

Let's just say his scores were... 5, 6, 4, 5,10Add them up and you get 30Then 30/5

Let's try bigger numbers

20+25+20+20

If you like this method, you may try it another method is called work Backwards

5x32=160

Then divide 160 by 5 to double check and you get 32!!

========================================

Therefore, the answer s 160 as his total score

hope this gives you a clue to what we are doing and when you have a question like this, I really hope you understand the concept

Hope this helped (:

5 0
3 years ago
For which set of data is the median less than the mean?
ser-zykov [4K]
The first one is B, and the second one is C.
7 0
4 years ago
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