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Lostsunrise [7]
3 years ago
15

Need help asap!! will mark brainliest

Mathematics
1 answer:
irakobra [83]3 years ago
3 0

Answer: C :D

Step-by-step explanation:

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What is the value of x in the equation 8x-2y = 48, when y= 4?<br> O6<br> O7<br> O 14<br> O 48
aksik [14]
The answer should be B-7
6 0
3 years ago
A student solves the following equation and determines that the solution is −2. Is the student correct? Explain. 3 a + 2 − 6a a2
Ganezh [65]

For this case, we have the following equation (according to the comments):

\frac{3}{a+2} - \frac{6a}{a^2-4}  = \frac{1}{a-2}

First, we factor the quadratic expression in the denominator:

\frac{3}{a+2} - \frac{6a}{(a-2)(a+2)}  = \frac{1}{a-2}

Then, we multiply both sides of the equation by (a-2) (a + 2):

\frac{3(a-2)(a+2)}{a+2} - \frac{6a(a-2)(a+2)}{(a-2)(a+2)}  = \frac{(a-2)(a+2)}{a-2}

Later, canceling similar terms we have:

3(a-2) - 6a = a+2

We do distributive property on the left side of the equation:

3a-6-6a=a+2

By grouping variables and constant terms we have:

3a - 6a -a = 2+6

Rewriting we have:

-4a=8

Finally, by clearing "a" we have:

a=-\frac{8}{4} a=-2

Note: the value of a is a extraneous solution because it makes the denominator of the original equation equal to zero.

Answer:

the student correct, but the value of a= -2 is an extraneous solution

8 0
4 years ago
Read 2 more answers
Arrange these numbers from least to greatest. <br> 5/6 7/9 -4/5
g100num [7]
Negative is smallest so 4/5 is smallest

then comparre 5/6 to 7/9

make bottom number same
5/6 times 3/3=15/18
7/9 times 2/2=14/18
comare 15/18 to 14/18
15/18>14/19

therefor 7/9<5/6


order is
-4/5, 7/9, 5/6
3 0
3 years ago
Read 2 more answers
2x-2=2(2x-11) solve for x
Mkey [24]

Instead of distributing 2, we can actually divide both sides by 2:

x - 1 = 2x - 11

Isolate x:

x = 10

7 0
3 years ago
Read 2 more answers
One 6 oz juice box has 90 calories. How many calories are there in 64 oz jug of the juice? Round to the nearest calorie.
Aleonysh [2.5K]

Answer:

960 calories for the 64 oz jug

Step-by-step explanation:

6 oz for 90 calories.

64 oz for ??? calories.

It's a ratio, 6:90

and            64:???

so  6 * 10 2/3 is 64.

so 90 * 10 2/3 is ???

960 is ???

5 0
3 years ago
Read 2 more answers
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