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8090 [49]
3 years ago
15

−12.7 = y − 3.4. What does y equal?

Mathematics
2 answers:
Norma-Jean [14]3 years ago
6 0
Y= -9.3
First, you must add 3.4 on both sides of the equal sign.
When you do this you're left with -9.3=y
Diano4ka-milaya [45]3 years ago
4 0
<span>−12.7 = y − 3.4
-y = -3.4 + 12 .7
-y = 9.3
y= +9.3
(because our signs change when we change their places to the other side )
</span>
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In 4 games, Larry averaged 23 PPG (points per game). How many points does he need to score in the last game to have an average o
ivann1987 [24]
Larry needs to score 33 points in the last game to have an average of 25 PPG.

To find the answer, we can solve the equation:

\frac{(4)23+p}{5}=25

<em />(where <em>p</em> is how many points he needs to score in the last game)

To find the mean of a group of numbers, you add them all up and divide the total by the number of numbers there are. Since Larry averaged 23 PPG in 4 games, we can multiply 23 by 4 to get the total of the first 4 games from the data. Then, we find <em>p</em>, which we will add to get our final total. Then, you divide by the 5 games.

\frac{(4)23+p}{5}=25
\frac{92+p}{5}=25
{92+p}=125
p=33

First, I simplified 4 x 23 to get 92. Then, I multiplied each side by 5 to get rid of the denominator. Finally, I subtracted 92 from each side to isolate <em>p</em>, and found that <em>p</em> = 33.


8 0
4 years ago
Read 2 more answers
What is the answer answer and plz give me step by step explaining
Tamiku [17]

Answer:

x = 5

Step-by-step explanation:

6 + 8(x - 1) = 2(3x + 4)

We evaluate the numbers in the brackets first.

(8 × x = 8x, 8 × 1 = 8, 2 × 3x = 6x, 2 × 4 = 8)

6 + 8x - 8 = 6x + 8

The left hand side of the equation is not exactly simplified, so we will evaluate it further first.

(6 - 8 = -2)

8x - 2 = 6x + 8

Now we can start shifting the x and the numbers separately.

Note that when pushing 6x from the right side to the left side, it needs to change to a negative 6x and vice versa for -2 turning into +2.

8x - 6x = 8 + 2

Further evaluation

2x = 10

Now we can simply find x.

Note that for this, ×2 becomes ÷2 when it shifts from the left side to the right side of the equation.

x = 10 ÷ 2

Evaluate.

x = 5

3 0
3 years ago
Assume that y varies inversely
Marina86 [1]

Answer:

y = 2

Step-by-step explanation:

y varies inversely with x setup is:

y = k/x

7 = \frac{k}{2/3}  (find 'k')

k = 7/1 · 2/3

k = 14/3

use what you know about 'k' and 'x' to solve for 'y'

y = 14/3 ÷ 7/3  (remember to multiply by the reciprocal when dividing fractions)

y = 14/3 · 3/7

y = 2

3 0
3 years ago
Solve the system of equations using any method.<br><br> 2y-4=0<br> X+2y=5
xz_007 [3.2K]

Answer:

the slope is (1, 2) if that's what you're looking for!

Step-by-step explanation:

hope this helps, have a nice day:)

8 0
3 years ago
A pearl is formed in 1 of every 10000 oysters what percent of oysters make pearls
Verdich [7]
The answer is 0.0001%

I hope this helps.

7 0
4 years ago
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