1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marysya12 [62]
3 years ago
13

Let f(x) = x to the second power − 8x + 5. Find f(−1).

Mathematics
1 answer:
Alex17521 [72]3 years ago
4 0

Hello!

To find the value of f(-1), you need to substitute -1 into each x variable and solve. Remember to use PEMDAS when simplifying.

f(x) = x² - 8x + 5 (substitute -1 for x)

f(-1) = (-1)² - 8(-1) + 5 (simplify the exponent)

f(-1) = 1 - 8(-1) + 5 (multiply)

f(-1) = 1 + 8 + 5 (add alike terms)

f(-1) = 14

Therefore, the value of f(-1) is 14.

You might be interested in
Plz help me with this
Mkey [24]

Answer: B) A = 750(1.04)ⁿ

<u>Step-by-step explanation:</u>

The formula for compounded annually is: A = P(1 + r)ⁿ   where

  • A (amount accrued) = <em>unknown</em>
  • P (amount invested) = $750
  • r (interest rate) = 4% -->(0.04)
  • t (time in years) = <em>unknown</em>

A = 750(1 + 0.04)ⁿ

  = 750(1.04)ⁿ

8 0
3 years ago
Sandy is upgrading her Internet service. Fast Internet charges $45 for installation and $49.45 per month.
butalik [34]

Answer:

x = 6 months.

The equation is given by $45 + ($49.45 × x) = ($56.95 × x).

Step-by-step explanation:

i) Let x be the number of months of Internet Service purchased till the Fast

  Internet charges and Quick Internet charges become the same.

ii) Charges for Fast Internet for x months is given by $45 + ($49.45 × x)

iii) Charges for Quick Internet for x months is given by ($56.95 × x)

iv) According to the first statement we will now equate the equations in ii)  

   and iii) and solve for x.

   Therefore, $45 + ($49.45 × x) = ($56.95 × x)

                      45 + 49.45 x  =  56.95 x

  Therefore  (56.95 - 49.45) x = 45

                    7.50 × x  =  45

  Therefore x = 45 ÷  7.5 = 6

6 0
3 years ago
Solve this please with an explanation of process your finding the values of x and y
SpyIntel [72]

Congruent sides, so isosceles triangle.  When we have an isosceles triangle the bisector of angle A is a perpendicular bisector of BC with foot D.   So x=ADB=90 degrees.

Angle B is 47 degrees and angle y=BAD is complementary, the other acute angle in a right triangle.

y = 90 - 47 = 43

Answer: x=90, y=43

4 0
3 years ago
Consider the functions. F(x)=(x+1)2-4 and g(x)=-4|x+1| which statement compares the range of the functions?
Andreyy89

Answer:

<h2>        The fourth</h2>

Step-by-step explanation:

Vertex of f is (-1, -4) so its range is limited to y≥-4

|x+1| is always ≥0 therefore -|x+1| is always ≤0 {4 is insignificant to this - slope doesn't mean in range} so its range is limited to y≤0

3 0
3 years ago
in a class of 30 students the highest score in physics test was 98 and the lowest was 35 what was the range?​
In-s [12.5K]

Answer:

63

Step-by-step explanation:

basta ayon sagot ko obob ko eh

5 0
3 years ago
Other questions:
  • Find the ordered pairs for the x- and y-intercepts of the equation 2x-6y=24 and select the appropriate option below.
    12·1 answer
  • The constant value of the ratio of two proportional quantities
    5·1 answer
  • two minor league baseball players got a total of 378 hits. washington had 4 more hits than sanchez. find the number of hits for
    10·1 answer
  • Which is the graphed of y=|-2x+1|?
    9·1 answer
  • (X^3+1)dividend (x-1)
    15·1 answer
  • A ferry traveled \dfrac16 6 1 ​ start fraction, 1, divided by, 6, end fraction of the distance between two ports in \dfrac37 7 3
    15·2 answers
  • The height of each story of an office building is 9 3/4 feet. The height is measured from the ceiling to the floor. The building
    10·2 answers
  • HELP ME GENIUS PLEASE I AM SO TIRED OF DOING IT
    5·1 answer
  • What does the word "flip" tell you to do in "Keep, Change, Flip" for dividing fractions?
    11·2 answers
  • A triangle has sides with lengths of 5 yards, 12 yards, and 13 yards. Is it a right triangle?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!