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3 years ago

PLZ HELP FAST (multiple choice)

Mathematics

2 answers:

Nataly_w [17]3 years ago

8 0

The answer is 0 (my sentence needs to have 20 characters so I’m typing extra)

never [62]3 years ago

6 0

Answer:

C. 0

Step-by-step explanation: I think if i am wrong im sorry

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It used to take Lizzy 11 minutes to run a mile. Now she runs the mile in 8 minutes. What is the percent of increase in her speed

Olegator [25]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

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

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3 years ago

PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!

Blababa [14]

Answer:

105

Step-by-step explanation:

17.5÷2.5=7

7x15=105

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3 years ago

Help me <br>heeeeeeeeeeeeeeeeeeeeelllllllllpppp

borishaifa [10]

Answer:

The diameter would also double

Step-by-step explanation:

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4 years ago

HELPPPP NOWW

Effectus [21]

Answer:

Volume of a parallelogram is v=whl

Area of s parallelogram is A= bh

Circumference of a circle= rd

Area of a circle= rd^2

Area of a triangle is 1/a <em>bh</em>

Area of a trapezoid is 1/2(b1 + b2)h

Perimeter of a quadrilateral is 2L + 2W

I couldn't drag the image but I knew what I was doing!

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3 years ago

PLZ HELP FAST (multiple choice)​

PLZ HELP FAST (multiple choice)