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Irina-Kira [14]
3 years ago
15

Find the common difference, d, in the following arithmetic sequence.

Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Answer: -4

Step-by-step explanation: Let me know if you need an explanation.

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Explain how to use properties to prove d + (8d + 1) + 7 is equivalent to 8 + 9d.
Nadya [2.5K]

Answer:

Use the associative property to move the parentheses, and the expression becomes (d + 8d) + 1 + 7. Combine like terms, and the expression becomes 9d +8. Use the commutative property to change the order of the terms, and the expression becomes 8 + 9d.

Step-by-step explanation:

7 0
4 years ago
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A tool store owner bought 18 circular saws for $68 each and 22 cordless drills for $74 each. How much did the owner spend in all
Ivahew [28]
C. They spent $2,852
8 0
3 years ago
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Graph the line with slope -2 passing through the point (3,4)
Maurinko [17]

Answer: The line that contains the points A and B

Step-by-step explanation: In this problem, we're asked to graph the line that contains the point (3,4) and has a slope of -2.

We would start things off by plotting our point, (3,4).

If you need a review on plotting points, take a look below.

<u />

<u>The first number in our point represents the x coordinate or how far we move to the left or right from the origin.</u>

<u />

<u>The second number in our point represents the y coordinate or how far we move up or down from the origin.</u>

<u />

So we go over 3 units and up 4 units and call that point A.

In order to graph a line however, we need two points

and that's where our slope comes in.

Remember that <em>slope</em> means <em>rise</em> over <em>run</em>. So from our original point that we have already plotted, we rise -2 units and run 1 unit.

When you have a slope that's an integer like -2, just put it over 1.

After rising 2 units and running 1 unit, plot your second point

which I have plotted as point B.

You could if you wanted to continue to plot more and more points but we just need at least two points to graph a line.

So our answer is then the line that contains the points A and B.

8 0
3 years ago
An elephant at the zoo lost 32 pounds over 8 months. The elephant lost the same amount of weight each month. Enter an integer th
inna [77]

Answer:

<em> He would loose 4lbs.  a Month 32/8=4</em>

Step-by-step explanation:

<em>First thing you need to do is to get the months down to one. so you need to divide 32/8 to get the pounds per month</em>

3 0
3 years ago
Read 2 more answers
Write the equation of the​ line, with the given​ properties, in​ slope-intercept form. Slope=- 7​, through ​(- 4​,8​)
san4es73 [151]

y = - 7x - 20

the equation of a line in ' slope- intercept form ' is

y = mx + c → (m is the slope and c the y- intercept)

here m = - 7 ⇒ y = - 7x + c

to find c substitute ( - 4 , 8 ) into the equation

8 = 28 + c ⇒ c = 8 - 28 = - 20

y = - 7x - 20 → equation in slope- intercept form


6 0
3 years ago
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