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3 years ago

Please help me I don't knoe how to do these

Mathematics

2 answers:

Helga [31]3 years ago

8 0

The answer is A. Method is attached as picture.

Andreas93 [3]3 years ago

8 0

The answer should be D but i think it is right

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betty closes the nozzle and fills it completely with a liquid. She then opens the nozzle. If the liquid drips at the rate of 14

natta225 [31]

Answer:

4.71 minutes

Step-by-step explanation:

Incomplete question [See comment for complete question]

Given

Shape: Cone

$r = 3$ -- radius

$h = 7$ --- height

$Rate = 14in^3/min$

Required

Time to pass out all liquid

First, calculate the volume of the cone.

This is calculated as:

$V = \frac{1}{3} \pi r^2h$

This gives:

$V = \frac{1}{3} * 3.14 * 3^2 * 7$

$V = \frac{1}{3} * 197.82$

$V = 65.94in^3$

To calculate the time, we make use of the following rate formula.

$Rate = \frac{Volume}{Time}$

Make Time the subject

$Time= \frac{Volume}{Rate }$

This gives:

$Time= \frac{65.94in^3}{14in^3/min}$

$Time= \frac{65.94in^3}{14in^3}min$

Cancel out the units

$Time= \frac{65.94}{14} min$

$Time= 4.71 min\\$

3 0

3 years ago

EASY POINTS EASY POINTS EASY POINTS EASY POINTS

ladessa [460]

Answer:

Vanessa would draw about 70 quarters

6 0

3 years ago

You are running a fuel economy study. One of the cars you find is blue. It can travel 43 1/2 miles on 1 1/4 gallons of gasoline

nignag [31]

Answer:

Blue

Step-by-step explanation:

Blue = 43.5/1.25

34.8 mpg

Red = 21 3/5 / 4/5 = 21.6/0.8

27 mpg

4 0

3 years ago

This picture shows a cube and its net

fenix001 [56]

The formula is 6 a^2

6 x (11^2)

11 x 11=121

6 x 121 = 726

So 726 is your answer

5 0

4 years ago

Read 2 more answers

Write an equation of a ine in slope-intercept form that passes through a point (4,-6) and has a slope of -3.

Sindrei [870]

Answer:

y= -3x +6

Step-by-step explanation:

<u>slope-intercept form</u><u>:</u>

y=mx +c, where m is the slope and c is the y-intercept.

Given that the slope is -3, m= -3.

Susbt. m= -3 into the equation:

y= -3x +c

Since the line passes the point (4, -6),

(4, -6) lies on the line and must therefore satisfy the equation. Thus, susbt. (4, -6) into the equation to find the value of c.

y= -3x +c

when x=4, y= -6,

-6= -3(4) +c

-6= -12 +c

c= 12 -6

c= 6

Hence, the equation of the line is y= -3x +6.

7 0

3 years ago