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3 years ago

Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now.

Mathematics

2 answers:

laila [671]3 years ago

5 0

I think it would be the 3rd one if not im sorry i tried

Nataliya [291]3 years ago

3 0

I think the answer woulfd be choice 3.

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Quadrilateral ABCD is dilated about the origin into quadrilateral EFGH

olga nikolaevna [1]

Answer:

Step-by-step explanation:

8 x 2 = 16

4 x 2 = 8

5 0

3 years ago

Read 2 more answers

If 55% people in a city like Cricket, 30% like Football and the remaining like nother games, then what per cent of the people li

labwork [276]

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Cricket = 55%
Football = 30%
Other games = Remaining (?)

So, the percent of people who like other games equals:

= 100 – (55 + 30)

= 100 – 85

= 15%

If the total no. of. people is 60,00,000:

★ Cricket

= 60,00,000 × 55/100

= 33,00,000

★ Football

= 60,00,000 × 30/100

= 18,00,000

★ Other sports

= 60,00,000 × 15/100

= 9,00,000

6 0

2 years ago

A field test for a new exam was given to randomly selected seniors. The exams were graded, and the sample mean and sample standa

swat32

All our answers lie in the above statement.

Confidence Level:
The creator claims that 9 out 10 students will have the average score in the said range. Or in other words we can say that the creator is 90% confident about the result of the field test. So the confidence level is 90%.

Margin of Error:
The average score lies within 4% of 70%. This means the margin of error is 4% i.e. the average scores can deviate from 70% by 4% .

Confidence Interval:
Lower Limit = 70% - 4% = 66%
Upper Limit = 70% + 4% = 74%

Interpretation:
The exam creator is 90% confident that the average scores of seniors will be between 66% and 74%.

4 0

2 years ago

2. Sandi can run for one hour at a constant speed of 348 cm per second. Marci can run for one

Zanzabum

Answer:

Marci is the faster runner.

Step-by-step explanation:

Sandi can run 348 cm in a second. Let's find out how many cm she can run in a minute: in a minute there are 60 seconds. So lets multiply 348cm times 60, this gives you 20,880. That is how much she travels in a minute, now let's find out how much she runs in an hour: if she runs 20,880 cm in an minute and there are 60 minutes in an hour, then all you have to do is multiply 20,880 times 60, this gives you 1,252,800. That is how many cm she runs in an hour. Now let's change from cm to miles. There are 160,934 cm in a mile. If we divide 1,252,800 by 160,934 this will give you

7 0

1 year ago

Stan's cookie recipe makes 24 cookies and calls for exactly 384 sprinkles. He is wondering how many sprinkles (p ) he will need

Arisa [49]

Answer:

960

Step-by-step explanation:

Given:

Stan's cookie recipe makes 24 cookies.
It needs exactly 384 sprinkles.

To Find:

Number of sprinkles needed for 60 cookies

<h2>Solution:</h2>

Find the number of sprinkles needed for 1 cookie:

24 cookies = 384 sprinkles
1 cookie = 384 ÷ 24
1 cookie = 16 sprinkles

Find the number of sprinkles needed for 60 cookies:

1 cookie = 16 sprinkles
60 cookies = 16 x 60
60 cookies = 960 sprinkles

Answer: Stan will need 960 sprinkles for 60 cookies.

3 0

2 years ago