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xxMikexx [17]
3 years ago
5

F(x) = x2 – 2x - 8

Mathematics
1 answer:
maw [93]3 years ago
5 0

Answer:

The y-intercept is the point (0,-8)

see the attached figure

Step-by-step explanation:

we have

f(x)=x^{2}-2x-8

we know that

The y-intercept is the value of the function f(x) when the value of x is equal to zero

so

For x=0

f(x)=0^{2}-2(0)-8\\f(x)=-8

therefore

The y-intercept is the point (0,-8)

see the attached figure to better understand the problem

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Find the percent error for the length of the soccer field. Round your answer to the nearest tenth.
maxonik [38]

Answer:

The percent error of the length of the soccer field is 1.4%

Step-by-step explanation:

Actual length of soccer field = 500 feet

Length shown in measuring instrument = 493 feet

We need to find the percent error of the length of the soccer field.

The formula used to find percent error of the length of the soccer field is: Percent\:error=\frac{approximate\;value-exact\:value}{exact\:value}\times 100\%

The exact length = 500

Approximate length = 493

Putting values and finding percent error

Percent\:error=|\frac{approximate\;value-exact\:value}{exact\:value}|\times 100\%\\Percent\:error=|\frac{493-500}{500}|\times 100\%\\Percent\:error=|-0.014|\times 100\%\\Percent\:error=0.014\times 100\%\\Percent\:error=1.4\%

So, the percent error of the length of the soccer field is 1.4%

8 0
3 years ago
What is the value of x?
ANEK [815]

Answer:

x = 13

Step-by-step explanation:

5x + 25 must equal 7x - 1, because all of the angles in the figure are right angles.

Then 5x + 25 = 7x - 1, and

                  25 = 2x - 1, and so 2x = 26 and x = 13

6 0
3 years ago
Simply 9+3(8-3(7-5))-4
EastWind [94]

Answer:

11

Step-by-step explanation:

  1. 9+3(8-3(7-5))-4
  2. 9+3(8-3(2))-4
  3. 9+3(8-6)-4
  4. 9+3(2)-4
  5. 9+6-4
  6. 15-4
  7. 11

I first delt with simplifying the parentheses till step five. Then in five I just added 9+6 because it came before the -4. But PEMDAS is very important when doing these problems because it tell you the order

  • P (parentheses)
  • E (exponents)
  • M (multiply)
  • D (divide)
  • A (add)
  • S (subtract)
  • **the biggest thing is that with multipe and divide it depends what comes first. If you see divide before multipe in the problem just do it that way. It is the same way with add and subtract but The multiple/divide group ALWAYS comes BEFORE add/subtract
4 0
3 years ago
Terry’s age is 3 less than three times Cody’s age. The sum of their ages is 57. How
mafiozo [28]

Answer:

let Cedric's age be c

tyshon= 3c-3

3c-3 +c =3c+c-3 = 4c-3

4c-3=57

4c=60

c=15

tyshon=15×3-3 = 42

5 0
3 years ago
Read 2 more answers
Select the least common multiple of 6 and 8. OA 2 OB: 14 O C. 24 OD. 48​
Len [333]

Answer:

OB.14

Step-by-step explanation:

I didn't know that that was even a multiple of 6and 8

8 0
3 years ago
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