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masha68 [24]
3 years ago
12

3 Quiz

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

Answer:

y varies of directly as x. This means that the equation is of the form y=kx where k is any number.

Substituting y=12 when x=4, we get

12=k×4⇒k=3

Hence, the required equation is y=3x.

The value of y when x=5 is y=3x5=15.

Step-by-step explanation:

bro it will work ♥️

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The radius of a circular baking tray is 6 cm. Find its area correct to 2 decimal places. Use the π button on your calculator for
ELEN [110]

Answer:

A \approx 113.10cm^2

Step-by-step explanation:

The circle is a flat surface or area limited or closed by a circumference. It is a two-dimensional figure and is formed by making a curve where it will always have the same distance to the center. Its area can be calculated using the following formula:

A=\pi r^2\\\\Where:\\\\r=radius

Therefore the area of the circular baking tray is:

A=\pi (6)^2=\pi*36=36 \pi=113.0973355\approx 113.10 cm^2

5 0
3 years ago
A goal is to get at least 10% of daily calories from polyunsaturated fats as are found in various nuts, oils, and fish. One serv
natka813 [3]
To get 10% of your calories from polyunsaturated fats you would need to eat 200 calories worth. So 1 serving of walnuts would give you 180 calories. So one serving of walnuts would be 9% of your daily calories.
6 0
2 years ago
Help would be appreciated, thanks
torisob [31]

Answer:

-8

Step-by-step explanation:

the pattern is times 4

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3 0
2 years ago
Read 2 more answers
Your friend has built the skate board ramp shown in the figure with sides of 16 in., 63 in., and 65 in. that he claims has dispr
nexus9112 [7]
The friend is wrong - According to the Pythagorean Theorm, if c is the hypotenuse and a and b are opposite sides then  c^{2} = a^{2}  +  b^{2} 
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So we see, left hand side = right hand side
Hence the theorm is proved.




5 0
3 years ago
How to wirte a linear equation from a graph
astra-53 [7]
Hey there!
I'll assume we're using the slope-intercept form equation:
y = mx + b
m = slope
b = y-intercept
First, we keep the y, because it's value depends on the x value given.
Next, we find the slope. Slope is defined as rise/run, so we take two points on the graph, find how much taller one is from another, and how far right/left they are, put those values over each other, and we have out slope (m).
Finally, we need to determine the y-intercept, and that's as simple as seeing where the line crosses the y axis and writing down that value.
Hope this helps!
8 0
3 years ago
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