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Usimov [2.4K]
3 years ago
7

Mr. Arnold is buying dry-erase markers for his classroom. He already has 7 markers. Mr. Arnold buys 5 packs with 7 markers each

and 8 packs with 4 markers each. He then throws away 2 markers that do not work. Which number sentence best represents how many dry-erase markers Mr. Arnold now has in his classroom?
Mathematics
1 answer:
klemol [59]3 years ago
3 0

Answer: 7+5(7)+8(4)-2

Step-by-step explanation:

that’s the answer

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Find the slope and the equation for the line passing through the points: (-3,0) and (-1,2)
dusya [7]

Answer:

  • slope: 1
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Step-by-step explanation:

The slope of the line between two points can be found using the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (2 -0)/(-1 -(-3)) = 2/2

  m = 1 . . . . . the slope of the line is 1

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The value of the y-intercept can be found by solving the slope-intercept equation for b.

  y = mx +b

  b = y -mx

  b = (0) -(1)(-3) = 3 . . . . . using point (x, y) = (-3, 0)

The equation of the line with slope 1 and y-intercept 3 can be written as ...

  y = x +3

4 0
3 years ago
PLEASE HELP ME AND PLEASE BE RIGHT I ALREADY HAVE AN 80 :(
ELEN [110]

Answer:

D

Step-by-step explanation:

When calculating the area of a parallelogram, use the formula A = l*h where length is the longest length and h is the perpendicular height of the shape. For this parallelogram, substitute l = 14 and h = 8.

A = l*w = 14*8 = 112

6 0
3 years ago
what is the mean of this data set? 12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18. answers: 13.50, 14.00, 14.75, and 15.75​
murzikaleks [220]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
A car rental agency has 18 vehicles available, of which 3 are convertibles. What is the probability that a randomly selected veh
Westkost [7]

Answer:

\frac{1}{6}\\

Step-by-step explanation:

To find the probability, divide the number of desired outcomes by the total:

This will be 3/18, since there are 3 convertibles and there are 18 total cars

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= \frac{1}{6}

7 0
3 years ago
PLEASE HELP PLEASE WILL GIVE BRAINLIEST !!!!! Freya is training for a track race. She starts by sprinting 200 yards. She gradual
DedPeter [7]

Answer:

A. a_n=200+(n-1)5

Step-by-step explanation:

Given,

The initial sprinting of Freya = 200 yards,

Also,  She gradually increases her distance by 5 yards per day,

So, in second day her sprinting = 200 + 5 = 205 yards,

In third day = 205 + 5 = 210 yards,

In fourth day = 210 + 5 = 215 yards,

....................,  so on,.....

Hence, the sequence that shows the given situation,

200, 205, 210, 215, .........

Which is an A.P.

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Option A is correct.

7 0
3 years ago
Read 2 more answers
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