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3 years ago

12

There are 25 students in Mrs.Venetozzi’s class

1 answer:

DENIUS [597]3 years ago

3 0

Answer:

SO there are 25 Students in the class

Step-by-step explanation:

25+0=25

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The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and

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Answer:

1212

Step-by-step explanation:

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3 years ago

How many possibilities are there when you toss a coin and draw a card from a standard deck of cards? A.54 B.72 C.112 D.104

kaheart [24]

I think D would be the correct answer

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3 years ago

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What does it mean for a variable to have coefficients that are equal but opposite

barxatty [35]

A coefficient goes before a variable and is a constant. When the coefficients are equal but opposite it means you have an even function.

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3 years ago

If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is given by y = 56t − 1.86t2.

Zina [86]

Answer: (a) (i)50.42 m/s (ii) 51.35 m/s (iii) 52.094 m/s (iv) 52.2614 m/s (v) 52.27814 m/s

(b) 54.14 m/s

Step-by-step explanation:

The average speed over the given time interval [a,b]: = $\frac{y(b)-y(a)}{b-a}$

Given: If an arrow is shot upward on Mars with a speed of 56 m/s, its height in meters t seconds later is given by $y = 56t − 1.86t^2.$

(a)

(i) average speed = $\frac{y(2)-y(1)}{2-1}$

$=\frac{56(2)-1.86(2)^2-(56(1)-1.86(1)^2)}{1}$

$=50.42$ m/s

(ii) average speed = $\frac{y(1.5)-y(1)}{1.5-1}$

$=\frac{56(1.5)-1.86(1.5)^2-(56(1)-1.86(1)^2)}{0.5}$

$=51.35$ m/s

(iii) average speed = $\frac{y(1.1)-y(1)}{1.1-1}$

$=\frac{56(1.1)-1.86(1.1)^2-(56(1)-1.86(1)^2)}{0.1}$

$=52.094$ m/s

(iv) average speed = $\frac{y(1.01)-y(1)}{1.01-01}$

$=\frac{56(1.01)-1.86(1.01)^2-(56(1)-1.86(1)^2)}{0.01}$

$=52.2614
$ m/s

(v) average speed = $\frac{y(1.001)-y(1)}{1.001-01}$

$=\frac{56(1.001)-1.86(1.001)^2-(56(1)-1.86(1)^2)}{0.001}$

$=52.27814
$ m/s

(b) $y(1)=56(1)-1.86(1)^2$

$=56-1.86$

$= 54.14$ m/s

3 0

3 years ago

What is 115% of 25? A. 46. B. 27.73. C. 28.75. D. 27.75

gladu [14]

100% = 25 so 25 + 15%
15% = .25 (25 divided by 100= .25) x 15 = 3.75

25 + 3.75 = 28.75 so C

7 0

3 years ago

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