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svp [43]
3 years ago
10

A child takes a nap averaging three hours and get an average of 12 hours of sleep at night . Nap time and night time sleep can e

ach vary by 30 minutes. What are the possible time lengths for the child's nap and night time sleep?
Mathematics
1 answer:
algol133 years ago
8 0
That should be all of them. Hope it helps
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A boat sails 20 miles wast of the port and then 15 miles south to an island how far is the boat from the port if you measure thr
sweet-ann [11.9K]

Answer:

25 miles

Step-by-step explanation:

Given: A boat sail 20 miles west of the port and then 15 miles south to an island.

Picture attached.

The distance from port to island could be measured in a straight line. It will form a hypotenous.

∴ we can use Pythogorean theorem to find the distance.

h^{2} = a^{2} +b^{2}

Where, "a" is adjacent= 20 miles and "b" is opposite= 15 miles.

h^{2} = 20^{2} +15^{2}

⇒ h^{2} = 400+225= 625

⇒h^{2} = 625

⇒h= \sqrt{625}= \sqrt{25^{2} }

We know \sqrt{x^{2} } = x.

∴h= 25\ miles

∴ Distance of Port from the Island is 25 miles.

6 0
3 years ago
(How to calculate (-2,8) and (1,6) that =-2/3
Pavel [41]
(6-8)/(1+2)= -2/3 the answer to the question
3 0
3 years ago
If a recipe requires 400 grams of potatoes for four people, how many kilograms would be required for 12 people?
STALIN [3.7K]

Answer:

it is 1200

Step-by-step explanation

its direct proportions

so 4 x 3 = 12

400 x 3 = 1200

3 0
3 years ago
Read 2 more answers
Determine the value of x.
kvasek [131]

Answer:

25°

Step-by-step explanation:

The angle of a right triangle is always 90°. 90-35=51. 25 times 2 is 50 plus 1 is 51, so x is 25°.

5 0
3 years ago
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Barb solved the following equation: 4(3x – 12) = 5(2x + 6)
katrin2010 [14]

Answer:

4(3 * 39 – 12) = 5(2 * 39 + 6)

x = 39


Step-by-step explanation:

4(3x – 12) = 5(2x + 6)

(12x - 48) = (10x + 30)

12x - 10x = 30 + 48

2x = 78

2x/2 = x

78/2 = 39

x = 39

No Prob :)

5 0
3 years ago
Read 2 more answers
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