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stellarik [79]
3 years ago
11

For what values of is the quadratic function f (c)=22 – 20 – 24 positivie

Mathematics
1 answer:
Gennadij [26K]3 years ago
6 0

Answer:

5485/45

Step-by-step explanation:

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the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

The height of the pole is 167 m

Step-by-step explanation:

The given parameters are;

Increase  in the length of the shadow = 90 m

Initial angle of elevation of the Sun = 58°

Final angle of elevation of the Sun = 36°

We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

90/(sin (22°)  = l₁/(sin(122°)

l₁ = 90/(sin (22°) ×(sin(122°) = 283.3 m

Therefore;

The height of the pole = 283.3 m × sin(36°) = 166.52 m

The height of the pole= 167 m to three significant figures.

3 0
3 years ago
Read 2 more answers
4) Members of the school band are buying bouquets of flowers to sell at the fundraiser.
horsena [70]

Answer: Roses= 75, Sunflowers= 45

Step-by-step explanation:

Add the ratios- 5 + 3 = 8

Divide the total by the sum = 120 ÷ 8 = 15

Multiply the ratios- 5 x 15 = 75 and 5 x 3 = 45

∴ 5:3 = 75 , 45

7 0
3 years ago
Determine the slope of the line that passes through the points (-4, 6) and (0, 4).
slamgirl [31]

The slope of the line that passes through those points is: B) -1/2

5 0
3 years ago
Please show your work
Crank

Answer:

y=17

Step-by-step explanation:

So the shape is a square, which means 1 is equal to 90 degrees. So, 4y+22=90

When you solve, you get 17:

4y=68

y=17

6 0
3 years ago
The rule at Anna's house is that if she eats all of her vegetables and does all of her chores each day, she earns 2 hours of int
never [62]

Answer:

She has 6 hours left.

Step-by-step explanation:

She started with 3 hours saved and got 2 more hours for each day that she did her chores and ate her vegetables.  Since she did her chores and ate her vegetables 4 days that means that in total she gained 8 hours (4 * 2) plus the ones she already had saved.   So 8 + 3 = 12 - 6 = 6

Please give brainliest

8 0
3 years ago
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