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sweet-ann [11.9K]
2 years ago
14

What is k(-8) when given the function k(x) = x +5 – 2x2?

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
7 0
By the way, the typed out question is not proper. Be sure to be clear on signs, like absolute value.

Absolute value of -8+5 is 3. This is because -3 is turned positive due to | |

(-8)^2 = 64
Multiply 64*2, equal to 128

Then solve. — 64-128= -64

-64 is the answer
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Kaj is flying a kite, holding her hands a distance of 3.5 feet above the ground and letting all the kite’s string play out. She
Savatey [412]

Using trigonometric ratio, the height of the ground above the ground to the nearest hundredth is 44.85 ft

The situation forms a right angle triangle.

<h3>What is a right angle triangle?</h3>

Right angle triangle has one of its angles as 90 degrees. The sides and angles can be found using trigonometric ratios.

Therefore, the length of the string is the hypotenuse side of the triangle formed . The opposite side of the triangle is the height of the kite form the ground.

Therefore, the height of the kite form the ground can be found as follows;

sin 33° = opposite / hypotenuse

sin 33° = h / 75

cross multiply

h = 75 × sin 33

h = 40.8479276261

h = 40.84

The height of kite from ground = 40.847 + 3.5  = 44.3479276261 = 44.85 ft

learn  more on right triangles here: brainly.com/question/25799394

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3 years ago
Please help me! <br> Express as a trinomial.<br> (2x – 5)(2x – 1)
Nady [450]

☁️ Answer ☁️

4x^2 - 12x + 5

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7 0
3 years ago
HELP ASAP!!!!!! WILL MARK BRAINLIEST!!!!!!!! 25 POINTS!!!!!!!!!!!!!!!
coldgirl [10]

Answer:

Jake is baking brownies & he wants do make a double batch. he needs 1 1/3 cups of milk and 2 cups water for a single batch. 3 cups milk and 4 cups water is the double ingredients recipe.

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wlad13 [49]

A) Tonya bought 3 games at X price, so 3X would be total amount.

B) Tony's cost was 0.50 less than X, so x-0.50, he bought 4 games, so he spent 4(x-0.50).

C) Set those to equal to solve for x:

3x = 4(x-0.50)

D) Solve:

3x = 4(x-0.50)

Distribute:

3x = 4x - 2

Subtract 4x from both sides:

-X = -2

Multiply both sides by -1:

X = 2

E) Since X is the amount Tonya paid per game, Tony paid X - 0.50, so Tony paid 2 - 0.50 = $1.50 per game.

Check:

Tonya:  3x = 3(2) = $6 total

Tony: 4(x-0.50) = 4(2.00 - 0.50) = 4(1.50) = $6 total

8 0
3 years ago
Read 2 more answers
Ten times the smallest of three consecutive integers is 213 more than the sum of the other two integers. Find the integers.
mihalych1998 [28]

Answer:

27,28 and 29

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4 0
3 years ago
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