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Artyom0805 [142]
3 years ago
13

A teacher corrected 8 math quizzes in 16 minutes.

Mathematics
1 answer:
Makovka662 [10]3 years ago
8 0

Answer: 32

Step-by-step explanation:

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chuck's coin box contains only pennies and nickels. if he jas 66 coins worth 2.38. how many of each type of coin foes he have​
schepotkina [342]

Answer:

You have 43 nickles and 23 pennies

Step-by-step explanation:

43 x 5 = 2.15

you have 2.38 total in 66 coins

so 2.38 - 2.15 = 0.23

that will leave you with 23 pennies

23 pennies plus 43 nickles = 2.38

0.23 + 2.15 = 2.38

7 0
3 years ago
Which recursive definition could be used to generate the sequence {3, 6, 3, 6, 3,...}? A) a1 = 3 and an = an-1 + 3n
barxatty [35]
The answer is choice C

------------------------------------------------

You start off with the first term being a1 = 3

Then you add on 3 to get to 6 as the second term

The next thing to do is add on -3, which is the same as subtracting 3, to get back to 3 once more.

This pattern continues on forever. To ensure you add on either +3 or -3 to the previous term, we add on the general term 3*(-1)^n

Overall, the nth term is found by a(n) = a(n-1) + 3*(-1)^n, which is what choice C shows. I'm assuming your teacher meant to write 3(-1)^n instead of 3(-1)n
8 0
3 years ago
The perimeter of a triangle is 480. The 2nd side is three times the 1st, and the 3rd side is 60 more than the 2nd. What is the l
svetlana [45]

Answer:

240

Step-by-step explanation:

So let the first side be x. So the next side is 3x and the last side is (3x +60) . Add all 3 sides and set equal to 480. So x + 3x + (3x +60)= 480. Now do the Algebra. So 7x + 60 = 480. Subtracting 60 we get 7x = 420 so x= 60. You are asked to ffg ind the length of the longest side so 3(60) + 60 = 240.

6 0
3 years ago
In the Volume of Cylinders, Cones and Spheres Section, if a cylinder has a radius of 3 and a height of 8, check all that apply.
Likurg_2 [28]

Answer:

V= πr²h

V= 72π

V= 226.2

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, a cylinder

Given data

Radius r of cylinder 3

Height h of cylinder 8

We know that the volume of a cylinder is given as

V= πr²h

Substituting our given data we have

V= π3²*8

V= π9*8

V= 72π

V= 226.2

7 0
3 years ago
Suppose that an object is dropped from a height of
Kamila [148]
Make hours to seconds to match meters
19.6*3600=70560 seconds
And is dropped from a height of 15.4 meters then the velocity will be
15.4m/70560s = 0.0002182539m/s
8 0
3 years ago
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