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3 years ago

Ana and Bella are sisters.They are responsible for keeping the

Mathematics

1 answer:

IgorLugansk [536]3 years ago

6 0

Answer:

Bella can complete work alone in 120 minutes

Step-by-step explanation:

Ana and Bella together can complete the shoveling in 30 minutes.

They can do a part of work in 1 minute = $\frac{1}{30}$

Ana can do work alone in 40 minutes

She can do part of work in 1 minute = $\frac{1}{40}$

So, Bella can do a part of work in 1 minute = $\frac{1}{30}-\frac{1}{40}$

= $\frac{1}{120}$

Bella can do $\frac{1}{120}$ part of work in 1 minute

Bella can do whole work in minutes = 120

Hence Bella can complete work alone in 120 minutes

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Find the radius. 120° Sector Area = 66.99

Charra [1.4K]

Answer:

radius = 7.998170905 or about 8 units of measurement

5 0

3 years ago

Y+1=3(x-4)y+1=3(x−4) find the slope

julia-pushkina [17]

Answer:

y+1= (3x-12)y+1=3x-12

7 0

3 years ago

There are 26 prize tickets in a bowl,labeled A to Z. What is the probability that a prize ticket with a vowel will be chosen,not

labwork [276]

Answer:

3.1%, dependent event

Step-by-step explanation:

We have that vowel are 5, it is from A, E, I, O, U therefore the probability of drawing a vowel is:

5/26

since there are a total of 26 options to choose from. Then, when selecting that, we are left with 25 options and 4 vowels, therefore the probability would be:

4/25

Therefore the final probability is:

5/26 * (4/25) = 0.031

In other words, selecting a vowel and then another (without replacement) the probability is 3.1%

The events are dependent, since the first event affects the second event, since the number of vowels and the number of total options are reduced.

5 0

3 years ago

32% of 1600 = 512

yaroslaw [1]

Answer:

64%: 1024
96%: 1536
132%: 2112
232%: 3712

Step-by-step explanation:

64% of 1600

64% of 1600 = 2 × (32% of 1600) = 2×512

64% of 1600 = 1024

96% of 1600

96% of 1600 = 3 × (32% of 1600) = 3×512

96% of 1600 = 1536

132% of 1600

132% of 1600 = (100% of 1600) + (32% of 1600) = 1600 + 512

132% of 1600 = 2112

232% of 1600

232% of 1600 = (100% of 1600) + (132% of 1600) = 1600 +2112

232% of 1600 = 3712

3 0

3 years ago

Read 2 more answers

Given: m∠EYL=72° Find: mEHL , mLVE

White raven [17]

Answer:

Part 1) The measure of arc EHL is $108\°$

Part 2) The measure of angle LVE is $54\°$

Step-by-step explanation:

step 1

Let

x-----> the measure of arc EHL

y----> the measure of arc EVL

we know that

The measurement of the outer angle is the semi-difference of the arcs it encompasses.

$m$

we have

$m$

substitute

$72\°=\frac{1}{2}(y-x)$

$144\°=(y-x)$

$y=144\°+x$ ------> equation A

Remember that

$x+y=360\°$ -----> equation B ( complete circle)

substitute equation A in equation B and solve for x

$x+(144\°+x)=360\°$

$2x=360\°-144\°$

$x=216\°/2=108\°$

Find the value of y

$y=144\°+x$

$y=144\°+108\°=252\°$

therefore

The measure of arc EHL is $108\°$

The measure of arc EVL is $252\°$

step 2

Find the measure of angle LVE

we know that

The inscribed angle measures half that of the arc comprising

Let

x-----> the measure of arc EHL

$m$

we have

$x=108\°$

substitute

$m$

3 0

3 years ago