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Ivanshal [37]
3 years ago
13

How to solve this math problem

Mathematics
1 answer:
Vikki [24]3 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

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Find difference 7 7/8-3 1/4
umka2103 [35]
So first convert to improper fractions
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so nowe we have
63/8+13/4
convert bottom number to same
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3 years ago
A local yoga studio
Andrews [41]

Answer:

Let's call the first studio, yoga studio A.

Let's call the second studio, yoga studio B.

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So, for 12 classes:

Yoga Studio A: y=10(12)+55, y=175

Yoga Studio B: y=12.5(12)+25, y=175

These two numbers are equal, so Griffin is right.

For 10 classes:

Yoga Studio A: y=10(10)+55, y=155

Yoga Studio B: y=12.5(10)+25, y=150.

These two numbers are not equal, so Gigi is wrong.

Let me know if this helps!

5 0
3 years ago
The price of a technology stock has dropped to $9.64 today. Yesterday's price was $9.75. Find the percentage decrease. Round you
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Answer:

1.1%

Step-by-step explanation:

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