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agasfer [191]
3 years ago
11

Simplify -5(3m2 + 7n2) + 8n2

Mathematics
2 answers:
Blababa [14]3 years ago
6 0

Answer:

\boxed{\red{=  - 3(5 {m}^{2}   + 9 {n}^{2} )}}

Step-by-step explanation:

- 5(3 {m}^{2}  + 7 {n}^{2} ) + 8 {n}^{2}  \\  - 15 {m}^{2}  - 35 {n}^{2}  + 8 {n}^{2}  \\  =  - 15 {m}^{2}  - 27 {n}^{2}  \\  =  - 3(5 {m}^{2}   + 9 {n}^{2} )

son4ous [18]3 years ago
5 0

Answer:

<h3>-15m² - 27n²</h3>

Step-by-step explanation:

-5(3m² + 7n²) + 8n²

Expand brackets.

-15m² + -35n² + 8n²

Combine like terms.

-15m² + -27n²

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What is the value of x? Test is timed please help.
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Answer:

x = 19

Step-by-step explanation:

A circle has a total of 360 degrees. Because central angles are congruent to the degree measures of their arcs, and because of vertical angles we can construct the equation :

5x+37+5x+37+3x-9-9=360

We can simplify this to :

8x+28=360

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8 0
2 years ago
suppose that the lifetime of a transistor is a gamma random variable x with mean of 24 weeks and standard deviation of 12 weeks.
emmainna [20.7K]

The probability that the transistor will last between 12 and 24 weeks is 0.424

X= lifetime of the transistor in weeks E(X)= 24 weeks

O,= 12 weeks

The anticipated value, variance, and distribution of the random variable X were all provided to us. Finding the parameters alpha and beta is necessary before we can discover the solutions to the difficulties.

X~gamma(\alpha ,\beta)

E(X)= \alpha \beta                 \beta= 12^{2}/24=6 weeks

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Now we can find the solutions:

The excel formula used to create Figure one is as follows:

=gammadist(X, \alpha, \beta, False)

P(12\leq X\leq 24)

P(12/6\leq G\leq 24/6)

P(2\leq G\leq 4)

P= 0.424

Therefore, probability that the transistor will last between 12 and 24 weeks is 0.424

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4 0
1 year ago
Read 2 more answers
a recipe for soup calls for 4 3/4 cup of water 1/2 teaspoon of salt, and 2 1/2 cups of mixed vegetables. if the recipe yields tw
tekilochka [14]
All we have to do is multiply by two

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8 0
3 years ago
What is the standard form of 0.00015​
SSSSS [86.1K]
Hi the answer is
1.5 x 10^-4

mark as brainliest if it’s helpful
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