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Dahasolnce [82]
3 years ago
7

Some people use a rule to see how many hours a child should sleep at night. Subtract the child's age in years from 30, then divi

de by 2.
Samantha is 14 years old she wakes up every morning at 7 am. Use the rule to work out what time she should go to sleep?
Mathematics
1 answer:
m_a_m_a [10]3 years ago
6 0
It would be 8 hours. 30-14=16. 16/2=8.
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What is 4 to the 1/2 power
Ronch [10]
4 to he power of 1/2 is 2
I think thats because its 1/2 of 2
Sorry if I'm wrong
Hope this helps
7 0
3 years ago
9) State the coordinates of the endpoints of a<br> line segment that intersects the y-axis.
eduard

Answer:

(5,4) and (3,4)

Step-by-step explanation:

A line segment has 2 end points which can be denoted as:

(x_1,y_1) and (x_2,y_2)

When this line segment intersects at y.

This means that the coordinate on the y axis is the same at both end points

i.e.

y_1 = y_2 = y

(x_1,y_1) and (x_2,y_2) becomes (x_1,y) and (x_2,y)

x1 and x2 can be any value but the y value must remain unchanged

Using the above analysis, a possible coordinate is:

(5,4) and (3,4)

Note that there are as many answers as possible as long as the coordinate pair satisfy is of the form (x_1,y)<em> and </em>(x_2,y)<em />

Take for instance, another possible pair is:

(1,-3) and (0,-3)

7 0
3 years ago
What percent of 12 is 7?<br> Please show work :)
SVETLANKA909090 [29]
It’s 3 hope this helps
5 0
3 years ago
Read 2 more answers
I need some help with this, please explain well. It's Trigonometry with right triangles, please let me know if you need a better
andreyandreev [35.5K]

Answer:

x = 12

Step-by-step explanation:

First you figure out which function your going to use. I notice that from the angle we have 5 which is the opposite side and 23 which is the adjacent side. This means we have to use tangent.

Then set up your equation: tan(x)=5/23. This is because the opposite side is 5 and the adjacent is 23 and it must be set up in that order.

Next get x alone by making the equation: x=tan^-1(5/23).

Then put it into the calculator and round to get 12.

5 0
3 years ago
Find the value of y so<br> that (-2,y) satisfies y =-7x?
Anit [1.1K]

Answer:

y=14

Step-by-step explanation:

plug in -2 in the place of x

y=-7(-2)    y=14

6 0
3 years ago
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