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Art [367]
3 years ago
11

Evaluate the function. f(x)= - x^2 - 10x find f(-5)

Mathematics
1 answer:
Vanyuwa [196]3 years ago
4 0

Answer:

f(- 5) = 25

Step-by-step explanation:

To evaluate f(- 5) , substitute x = - 5 into f(x) , that is

f(- 5) = - (- 5)² - 10(- 5) = - 25 + 50 = 25

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How many times does christine tune up her bike each year
jekas [21]

80(miles) x 52(weeks in a year) = 4160(miles in a year)

4160 / 4(tunes in a year) = 1040(miles to go before a tune)

Now for Christine

100(miles) x 52(weeks in a year) = 5200(miles in a year)

5200 / 1040(miles to go before a tune) = 5(tunes in a year)

Answer C. 5

4 0
3 years ago
3. WEATHER On a cold January day,
erma4kov [3.2K]

Answer: -9 + 21 = t    t = 12°C.

Step-by-step explanation: For this problem lets have t be equal to the original temperature in the beginning of the day. The equation -9 + 21 = t represents this situation because it states that if we add the degrees that dropped to the current degrees  it will give us our original degrees.

Solve.

-9 + 21 = t (Simply add -9 + 21) -9 + 21 = (+12)

12 = t

So, the original degrees in the beginning of the day was 12°C.

3 0
3 years ago
Lyle bought a baseball card
andrey2020 [161]

Answer:

$656

Step-by-step explanation:

1.5% of 800 is 12.

You do 12 x 12 which is 144.

Next you do 800 - 144 which equals 656.

(The upcoming and this sentence is pre-written and copy and pasted in every brainly question or comment I write or answer.) If this answer helped you please consider giving it brainliest. If my answer was wrong and you got marked wrong for it, I deeply apologize and hope you will forgive me, since everyone makes mistakes sometimes. If you need me to elaborate on my answer or give further explanation on it, please ask and I will do so. If you need to explain your reasoning on your work feel free to use my words- word for word- without crediting me, the answer was made for you anyways! Hope yall learn from my answer and it helps you in the future with assignments, quizzes, test’s, and more!

- •Trix•

( Yes I know my - •Trix• thingy is not my user but it’s what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)

8 0
3 years ago
The total area of Canada is 9 984 670 km2. Calculate the side length of a square with the same area. Show your work.
Korolek [52]

Answer:

3159.853 km

Step-by-step explanation:

The question says a square has an area of 9,984,670 km^2, which means that all sides are the same length. So you can use the equation:

9984670 = (x)(x) which rearranges to 998470 = x^2

get the square root and you get:

x = 3159.853 km

8 0
3 years ago
A marathon is about 26 miles long. Which of these shows how to convert 26 miles to feet?
jekas [21]

Answer:

26 miles * 5280 ft/ 1 mile

Step-by-step explanation:

We know there are 5280 ft in 1 mile

26 miles * 5280 ft/ 1 mile

3 0
3 years ago
Read 2 more answers
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