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lyudmila [28]
2 years ago
13

Please help me, Please answer all 5 questions (please)

Mathematics
1 answer:
Reptile [31]2 years ago
4 0

1.) D.

2.) D.

3.) B.

4.) A.

5.) A.

Hope it helps :)

btw i already answered this :)

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Find an equation of variation in which y varies directly as x and y = 60 when x = 0.4. Then find the value of y when x = 2​
Nostrana [21]

Answer:

y = 300

Step-by-step explanation:

The equation of variation in which y varies directly as x is written Mathematically as:

y ∝ x

y = k × x

y = kx

Where k = Proportionality Constant

We find k

a) y = 60 when x = 0.4.

60 = 0.4 × k

k = 60/0.4

k = 150

b) find the value of y when x = 2​

y = kx

k = 150

Hence,

y = 150 × 2

y = 300

7 0
2 years ago
What is the length of BC¯¯¯¯¯ ?
svlad2 [7]

Hello!


The length of side BC can be found by using the Law of Sines. This law states,

a / sin A = b / sin B = c / sin C.


Given:

Angle A = 51.2 degrees

Angle B = 60.3 degrees

Side AC (or B) = 21 cm

Side BC (or A) = ? cm


Let's plug in these values into the formula to find the missing side length.


a / sin (51.2) = 21 / sin (60.3)

a / sin (51.2) = 24.1759... (multiply both sides by sin(51.2)

a = 24.1759 · sin (51.2)

a = 18.841...


18.841 can be rounded to 19.


Therefore, the length of side BC is equal to 19 centimeters.

5 0
2 years ago
Assume clark and lana leave smallville stadium from the same point at the same time. If clark runs south at 4 mph and lana runs
Vitek1552 [10]
They are 10 miles apart


6 0
3 years ago
Help me with this one
Cloud [144]
The answer would be, y - 32 + 4y
3 0
3 years ago
Read 2 more answers
A square piece of paper 150 millimeters on a side is folded in half along a diagonal. What is the exact length of the diagonal?
s344n2d4d5 [400]

Answer:

Look below.

Step-by-step explanation:

a^{2}+b^{2}  =c^{2} \\150^{2}+150^{2}= c^{2}\\22500+22500=c^{2} \\\sqrt{45000}   = c\\

Use a calculator.

6 0
3 years ago
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