4 years ago

How to solve this math problem

Mathematics

1 answer:

Vikki [24]4 years ago

5 0

Answer:

D. 1 and 20

Step-by-step explanation:

To solve the equation, factor the quadratic and set the factors equal to 0.

d^2 - 21d + 20 becomes (d-20)(d-1) since -1*-20 = 20 and -1+-20 = -21.

Set each equal to 0 and solve for x.

d-20 = 0 d = 20

d - 1 = 0 d = 1

You might be interested in

Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Help fast help fast help Hel

Dovator [93]

Answer: its 3x+20 to my calculations

Step-by-step explanation:

5 0

3 years ago

Find the domain when f (x) = 5. х -5 -1 9 4 5 8 f(x) -6 -6 | 0

nadezda [96]

Answer:

Pues la función de 5 seria 4 porque si te fijas en la X es (4)

5 0

3 years ago

Find the area of a square if a side measures 15 mm

tankabanditka [31]

Formula for the area of a square = side^2
So, 15^2 will result in the area.
Thus, the answer is 225 mm^2 (when squaring, units are always given the square as well.)

5 0

4 years ago

Is √65 between 6 and 7 on a number line

ale4655 [162]

No because when you do square root 65 it then equals 8.0622577483.

6 0

3 years ago

When Daniel left his house in the morning, his cell phone battery was partially

Mila [183]

Answer:

24.75 percents

Step-by-step explanation:

6 0

3 years ago