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Leokris [45]
3 years ago
15

1. John and Carolyn are planning a picnic for some of their friends. In all there will be 28 people. They plan to barbecue steak

s for the meal. The recommended weight of a steak for one person is 3⁄4 pound. How many pounds of steak will they need for the picnic?
2. Most people know that one quarter of an hour is 15 minutes. Perform the appropriate calculation to prove that this is true.
Mathematics
2 answers:
Sonja [21]3 years ago
4 0

1. 28 x 3/4 = 21 kg

2. 1 hr = 60 mins

=》 1/4 hr = 60/4 = 15mins

marysya [2.9K]3 years ago
3 0

Answer:

1. Total number of people = 8

Steak required for 1 person is = \frac{3}{4} pounds

So, steak required for 28 persons will be : \frac{3}{4} \times28

= 21 pounds

2. Most people know that one quarter of an hour is 15 minutes.

One quarter is written as : \frac{1}{4} or 0.25

And 1 hour has 60 minutes.

So, one quarter has = \frac{1}{4} \times60 = 15 minutes

or 0.25\times60=15 minutes

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405,000,000−1.7×10^8
zhenek [66]

Answer: 235,000,000

Step-by-step explanation:

7 0
3 years ago
Of the following integers, which is the closest approximation to (2√+5√)2(2+5)2?A. 7B. 10C. 13D. 15E. 17
MAXImum [283]

Answer:

C. 13

Step-by-step explanation:

from on online source, the question should be placed as thus:

Of the following integers, which is the closest approximation to (√2 + √5)^2 ?

A. 7

B. 10

C. 13

D. 15

E. 17

This is known as Algebraic expression. So we have to expand to simplify further

using  this identity  th (a+b)^2 = a^2 + b^2 +2ab

(√2 + √5)^2 =

(√2 + √5)(√2 + √5)

................Expansion of the above

\sqrt{2}* \sqrt{2} +\sqrt{2}* \sqrt{5} +\sqrt{2} *\sqrt{5}+\sqrt{5} *\sqrt{5}

2 + 5 + 2√10

~ 2 +5 + 2(3)

C. 13

3 0
3 years ago
If the radius of a spherical rubber ball is 1 1/4 inches what is its volume to the nearest cubic inch
Yuri [45]
? = 4/3 π(1 1/4)
<span>Answer: 8</span>

5 0
3 years ago
Express in simplest radical form.<br> V40
Andrews [41]

Answer:

\huge\boxed{2 \sqrt{10}}

Step-by-step explanation:

When taking a square root and making it a radical, we need to list out it's factors and find which one we can take the square root of.

The factors of 40 are:

1, 2, 4, 5, 8, 10, 20, 40.

Out of these, we need to look for one that we can find the square root of.

We know that the square root of 4 is 2.

Therefore, we can make \sqrt{40} into \sqrt{4 \cdot 10}.

The square root of 4 is 2. Therefore, we can put that outside the radical.

2 \sqrt{10}.

Hope this helped!

7 0
3 years ago
Please answer it correctly and please show work please help me if it’s correct I will mark you brainliest
Eva8 [605]

Answer:

210 hours

Step-by-step explanation:

<u>Step 1:  Make an expression</u>

(2/3 * 1575) / 5

<u>Step 2:  Multiply</u>

(2/3 * 1575)/5

(1050) / 5

<u>Step 3:  Divide</u>

(1050) / 5

210 hours

Answer:  210 hours

8 0
3 years ago
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