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ddd [48]
3 years ago
11

An arithmetic sequence has a 10th term of 17 and a 14th term of 30. find the common difference

Mathematics
1 answer:
IrinaVladis [17]3 years ago
5 0
The common difference is 3.25
Hope this helps
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Write a phrase for EACH expression: <br><br> 10y<br><br> x - 3<br><br> 12n
olga2289 [7]
10 times a number y
3 subtracted by A number x
12 times a number n
5 0
3 years ago
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A store is having a sale on trail mix and jelly beans. For 7 pounds of trail mix and 9 pounds of jelly beans, the total cost is
Vlad [161]

Answer:

The cost for each pound of trail mix is $ 1.75 and each pound of jelly beans is $ 2.75.

Step-by-step explanation:

Let each pound of trail mix cost x dollars and each pound of jelly beans cost y dollars.

Given:

7 pounds of trail mix and 9 pounds of jelly beans cost $ 37.

So, 7x+9y=37--------------- 1

Also, 5 pounds of trail mix and 3 pounds of jelly beans cost $ 17.

So, 5x +3y=17--------------- 2

Multiplying equation 2 by -3, we get

(5x +3y=17)\times -3\\-15x-9y=-51-------- 3

Now, adding equations 1 and 3, we get

7x+9y-15x-9y=37-51\\7x-15x=-14\\-8x=-14\\x=\frac{-14}{-8}=\$1.75

Now, plug in x=1.75 in equation 1 and solve for y.

7(1.75)+9y=37\\12.25+9y=37\\9y=37-12.25\\9y=24.75\\y=\frac{24.75}{9}\\ y=\$2.75

Therefore, the cost for each pound of trail mix is $ 1.75 and each pound of jelly beans is $ 2.75.

7 0
4 years ago
A video game that normally sells for $80 is on sale for $68. What is the percent of discount for the sale price?
Snezhnost [94]

Answer:

C

Step-by-step explanation:

68 - 80 / 80

= - 12 / 80

= - 3 / 20

= - 15%

4 0
3 years ago
Use the bar graph to answer the question.
erik [133]

Answer:

A

Step-by-step explanation:

the graph shows It's the 3rd tallest

6 0
3 years ago
Determine the coordinates of the x-intercept of 3x – 4y = 24.
Mars2501 [29]
The definition of an x intercept is when y equals 0. If y were to equal 0, you would have 3x -4(0)= 24, which is equal to 3x - 0 = 24. Using the addition property of equality, you would add 0 to both sides, and get 3x = 24. Finally, using the division property of equality, you have x = 8. So the coordinates of the x intercept would be (8,0), as your y was defined as 0. Hope this helps. Let me know if you have any questions about my explanation and feel free to ask more questions.
6 0
3 years ago
Read 2 more answers
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