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Daniel [21]
2 years ago
5

Find the number solutions of the equation

Mathematics
1 answer:
egoroff_w [7]2 years ago
5 0

Answer:

  A.  0

Step-by-step explanation:

The value of the discriminant is ...

  b² -4ac = (-3)² -4(1)(4) = 9 - 16 = -7

The negative discriminant means the roots will be complex.

There are 0 real solutions.

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Charlie is late for the hot-air balloon rally. He stops his car 65 meters from a hot-air balloon already in flight. While Charli
aalyn [17]

Answer: 111.4m

Explanation:

1) Trigonometric ratios

You only need to use tangent ratio.

tangent ratio = opposite-leg / adjacent-leg = balloon height / horizontal distance

2) First, find the height of the ballon when he is watching at an angle of elevation of 28°

tangent ratio = opposite-leg / adjacent-leg = balloon height / horizontal distance

tan(28°) = balloon height/65m ⇒balloon height = tan(28°)×65m

balloon height = 34.56m

3) Second, find the height of the balloon,when he is watching at an angle of elevation of 66°

tan(66°) = height of the balloon / 65m ⇒ height of the balloon = tan(66°)×65m

height of the balloon = 145.99m

4) Vertical distance the balloon ascended while Charlie watched.

Subtract the final initial height from the final height:

145.99m - 34.56m = 111.43m

4) Round to the nearest tenth: 111.4 m

6 0
3 years ago
Solve to the variable 8 = y - 3
creativ13 [48]

Answer:

y=11

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Find the area of the kite !!!! PLEASE HELP!!!!
Andrew [12]

ANSWER

D. 18 m^2

EXPLANATION

The area of a kite is half the product of the diagonals.

The diagonals of the kite are

3+3=6m

and

2+4=6m

The area of the kite

=  \frac{1}{2}  \times 6 \times 6

= 3 \times 6

= 18 {m}^{2}

The correct answer is D.

7 0
2 years ago
I need help what is the answer
lisabon 2012 [21]

Answer:

C

Step-by-step explanation:

plug in the points for the equation on C and you'll get see that it fits

5 0
3 years ago
Luba walked 5 miles in 1 1/2 hours. How fast did she walk in miles per hour?
Alexandra [31]

Answer: 3 1/3 miles

Step-by-step explanation:

8 0
2 years ago
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