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3 years ago

13

-x+4(x+3)=-12is this never true or always true

1 answer:

rodikova [14]3 years ago

7 0

Answer: Never true.

Step-by-step explanation: Distribute the numbers: 4 times x is 4x, 4 times 3 is 12. Then you have the equation: -x+4x +12 = -12. Now, choose a random number, maybe -4. A negative plus a negative cancels out so you are left with 4-16(Because you distribute the number) +12 = -12. 4-16 is -12. -12 plus 12 equals 0.

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Suppose 2' is a normally distributed random variable with ft = 10.3 and 0 = 3.8. For the following probability,draw an appropria

TiliK225 [7]

GIVEN

The following values are given:

$\begin{gathered} \mu=10.3 \\ \sigma=3.8 \end{gathered}$

SOLUTION

The z-score for the x values 9 and 14 can be calculated using the formula:

$z=\frac{x-\mu}{\sigma}$

For x = 9:

$\begin{gathered} z=\frac{9-10.3}{3.8} \\ z=-0.34 \end{gathered}$

For x = 14:

$\begin{gathered} z=\frac{14-10.3}{3.8} \\ z=0.97 \end{gathered}$

The probability can be calculated as follows:

$P(9\le x\le14)=Pr(-0.34The region that represents the solution is shown below:Therefore, the probability is given to be:[tex]P(9\le x\le14)=0.4671$

The probability is 0.4671.

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1 year ago

Joey collects baseball cards. He already has 245 and for his birthday, each of his 12 friends bought him 25 more. How many baseb

lina2011 [118]

Answer:545 baseball cards

Step-by-step explanation:hope this helps!

6 0

2 years ago

This high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 70 yards

elena-14-01-66 [18.8K]

Answer:

do 70x70=4,900 than do 100 x100=10,000 than add them to gether and you get 10,4900

Step-by-step explanation:

theres 2 sides not just one

5 0

2 years ago

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Tell whether the ordered pair is a solution to the equation.<br><br><br> (1, 3); 4x – 3y = -5

Bumek [7]

Answer:

Yes

Step-by-step explanation:

4(1)-3(3)=-5

4-9=-5

-5=-5

8 0

2 years ago

Write the next three terms of the arithmetic sequence.

Inga [223]

Answer:

36, 44, 52

Step-by-step explanation:

Just add 8 to 28 = 36

Add 8 to 36 = 44

Add 8 to 44 = 52

8 0

2 years ago

Read 2 more answers