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mamaluj [8]
2 years ago
8

What is 25+25-100+25+25

Mathematics
1 answer:
andrezito [222]2 years ago
5 0

Answer: 0

Step-by-step explanation: when you add 25+25 it is equal to 50. when you subtract 100 from 50 it gives you -50. when you add 25+25= 50 so you add that -50 and 50 and it gives you zero (im not very good at explaining hope it helped)

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Find the shaded area, screenshot provided please help I have an online exam, and I only have 10 minutes remaining
NARA [144]

Answer:

157.1

Step-by-step explanation:

If you split the blue shape like in the picture, it shows that there is 1 large semicircle and 2 smaller ones.

The area of a semicircle is (pi×radius²)÷2

First, you would find out the area of the large semicircle by substituting in the numbers:

(3.142×10²)÷2=157.1

Then you would find out the area of the smaller semicircle:

The diameter of the semicircle is 10 so to find the radius you would half it.

(3.142×5²)÷2=39.275

To find the area of the whole shape, you would have to take away 39.275 and then add it back on so the answer would be 157.1

Hope this helps :)

7 0
3 years ago
Domain and range of y=-2x^2+12x-15
Dominik [7]
Answer:
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8 0
2 years ago
Suppose Q and R are independent events, and P(Q) = 0.45, P(R) = 0.31. Find P(Q and R).
Artist 52 [7]
The right anser is A: 0.1395 because you multiply the two possibilities. 
8 0
3 years ago
Read 2 more answers
ABC is an obtuse triangle. Given that CB = 20, the measure of A = 30°, and the measure of B = 45°, which of the expressions list
Mariulka [41]

Answer:

option 3

Step-by-step explanation:

Using the Sine rule in Δ ABC, that is

\frac{a}{sinA} = \frac{b}{sinB}, that is

\frac{20}{sin30} = \frac{CA}{sin45} ( cross- multiply )

CA × sin30° = 20 × sin45° ( divide both sides by sin30° )

CA = \frac{20sin45}{sin30} → (3)

5 0
3 years ago
Need help! Can anyone please help me? It would be much appreciated. Please view the attached photo. Will mark as brainliest!
seraphim [82]

Answer:

  B)  0.0073 mm/s

Step-by-step explanation:

The rate of change of area is the product of the circumference and the rate of change of radius:

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Of course, C = 2πr, so ...

  dr/dt = (7 mm²/s)(2π·152 mm) ≈ 7/955.04 mm/s ≈ 0.0073 mm/s

6 0
3 years ago
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