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IRINA_888 [86]
2 years ago
12

8x + 2+ 4y; x = 9, y = 2

Mathematics
1 answer:
Alchen [17]2 years ago
4 0

Answer: 82

Step-by-step explanation:

We simply need to substitute the values for x and y into the equation

Both variables are already given to us, x=9, y=2

8(9)+2+4(2)

72+2+8

82

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Please help I've been trying to figure it out but I can't​
Savatey [412]

answer : 2 1/2

divide y by x

divide  2 1/2 by 1

its 2 1/2

10 divided by 4 is also

2 1/2

17 1/2 divided by 7 is also

2 1/2

6 0
1 year ago
steve has quiz scores of 60,64,75,71. If all the quizzes count the same, what is the lowest grade he can make on the next quiz t
NeX [460]

Answer:

The last quiz score must be at least an 80 to get the average to be a 70.

Step-by-step explanation:

In order to find this, you need to take the average of the 4 test scores along with the unknown test score (x). So, to find an average, we add all the numbers together and divide by the amount of tests taken. We can then set this equal to 70 since that is the minimum average.

(60 + 64 + 75 + 71 + x)/5 = 70 ------> Multiply both sides by 5

(60 + 64 + 75 + 71 + x) = 350 -----> Combine like terms

270 + x = 350 -----> Subtract 270 from both sides

x = 80

7 0
3 years ago
The equation 3/x=5/7 is equivalent to the equation
katrin2010 [14]

Answer:

Step-by-step explanation:

3/x=5/7 is the same as A 21=5x Both equal to 21/5 or 4 1/5

7 0
2 years ago
How many kilograms make a tonne<br>​
kipiarov [429]
Generally in the US a ton is approximately 907 kilograms and a metric ton is equivalent to 1,000 kilograms
7 0
3 years ago
3 1 - 2.6<br>________<br>0.05<br>​
olya-2409 [2.1K]

Work:

\frac{31 - 2.6}{0.05}

\frac{28.4}{0.05}

Answer:

567. \frac{}{9}

6 0
2 years ago
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