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netineya [11]
3 years ago
13

20c + 8d +10c - 5d please answer you would get 15 points!

Mathematics
2 answers:
MatroZZZ [7]3 years ago
5 0
=> 20c + 10c + 8d - 5d
=>30c + 3d
=>3 ( 10c + d)
Rudik [331]3 years ago
4 0
I think 30c+3d would be the correct answer.
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3 years ago
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The painting shown on the right has an area of 300 in^2. what is the value of x?
Nataly [62]

Answer: X = 10.20240940...

Step-by-step explanation:

x(2x + 9) = 2x^2 + 9x

2x^2 + 9x = 300

- 300 ON BOTH SIDES

2x^2 + 9x - 300 = 0

SOLVE USING THE QUADRATIC FORMULA

x = -b +/- all root (b)^2 - 4(a)(c) All over 2(a)

When all the values are plugged in:

When using "+" in the equation you should get:

x = 10.20240940…

When using "-" in the equation you should get:

x = −14.70240940…

Now.. you CANNOT have a negative length, so you cross of the negative value leaving you one value for x which is 10.20240940...

YOUR ANSWER IS:    x   =  10.20240940...

4 0
2 years ago
Question 15 of 40
PilotLPTM [1.2K]

Answer:

Option C: n = 32; p^ = 0.4

Step-by-step explanation:

The normal curve can be used in this case if; np ≥ 10 or n(1 - p) ≥ 10

A) For n = 28 and p = 0.3;

np = 28 × 0.3 = 8.4 < 10

Thus, it can't be used.

B) For n = 28 and p = 0.9;

np = 28 × 0.9 = 25.2 > 10 Ok

n(1 - p) = 28(1 - 0.9) = 2.8 Not Ok

Thus, it can't be used

C) For n = 32 and p = 0.4

np = 32 × 0.4 = 12.8 > 10 Ok

n(1 - p) = 32(1 - 0.4) = 19.2 > 10 Ok

Thus, it can be used

D) For n = 32 and p = 0.2

np = 32 × 0.2 = 6.4 < 10 Not Ok

Thus it can't be used.

4 0
3 years ago
Brainlist please help
Veronika [31]
8•4/1 = 32

Part A: Answer B
Part B: Answer A
8 0
2 years ago
The steps for deriving the Quadratic Formula are shown. Which is the BEST choice for the missing reason?
Over [174]

Answer:

A) Factor

Step-by-step explanation:

3 0
3 years ago
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