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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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IS MY ANSWER CORRECT??? *IF NOT PLEASE TELL ME THE CORRECT ONE, ITS FOR A QUIZ! *
olga nikolaevna [1]

Answer:

Correct answer please mark me brainliest answer

7 0
2 years ago
{x + 4y = 13<br> {x – y = 3
NARA [144]

Answer:

x = 5 and value of y = 2

Step-by-step explanation:

using substitution method

let;

x + 4y = 13...................... equation 1

x - y = 3............................... equation 2

from equation 2

x - y = 3.................................... eqn 2

x = y + 3.......................................... equation 3

put x = y + 3 in equation 1

x + 4y = 13...................... equation 1

y + 3 + 4y = 13

5y = 13 - 3

5y = 10

divide both sides by 5

i.e

5y/5 = 10/5

y = 2

sustitue for y  = 2 in equation 3

x = y + 3.......................................... equation 3

x = 2 + 3

x = 5

therefore the value of x = 5 and value of y = 2

to check if your answwer is correct slot in the value of x and y in any of the equation . e.g

from equation 3

x = y + 3.......................................... equation 3

5= 2 + 3

5 =5....................... proved

3 0
3 years ago
The mean height of women in a country​ (ages 20-​29) is 64.5 inches. A random sample of 75 women in this age group is selected.
Allushta [10]

Answer:

0.07378

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ/√n, where

x is the raw score = 65 inches

μ is the population mean= 64.5 inches

σ is the population standard deviation = 2.99

n = 75

z = 65 - 64.5 /2.99/√75

z = 0.5/0.345255461

z = 1.4482

Probability value from Z-Table:

P(x<25) = 0.92622

P(x>25) = 1 - P(x<25)

= 1 - 92622

= 0.07378

The probability that the mean height for the sample is greater than 65 ​inches is 0.07378

4 0
2 years ago
Write a quadratic equation with a double root of -5
Sophie [7]

Answer:

x^2 =5

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Please answer: The Maxwell children have hired a caterer to provide food for an anniversary party for their parents. The caterer
Sidana [21]

In the exercise Maxwell children want to calculate the estimated amount or budget placed on one person coming to the  anniversary party for their parents.

The number if guest will be 50 guests

Given data

quoted price = $96 per person

Let the total bill be x

<em>one-fourth of the total bill = 1/4*x</em>

advance payment is $1200 = 1/4x------------1

Let us find the total bill which is x

$1200 = 1/4x

<em>cross multiply</em>

1200*4 = x

x = 4800

if the budget per person is $96

Hence the total expected guest will be = 4800/96

50 guests

Learn more about algebra here :

brainly.com/question/6143254

7 0
2 years ago
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