All categories

3 years ago

2)988 Plz help meee!!!!

Mathematics

2 answers:

VashaNatasha [74]3 years ago

3 0

Answer:

Answer Is 494

Step-by-step explanation:

2(988

9/2=4

18/2=9

8/2=4

Anastaziya [24]3 years ago

3 0

The answer is 494. Hoped I helped

You might be interested in

4a − 3 = 9 + a..........................

OverLord2011 [107]

Answer:

$4a - 3 = 9 + a \\ 4a - a = 9 + 3 \\ 3a = 12 \\ a = \frac{ 12}{3} \\ a = 4$

I hope this help

7 0

3 years ago

A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Co

kumpel [21]

Answer:

a) 68.2%

b) 31.8%

c) 2.3%

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 530

Standard Deviation, σ = 119

We are given that the distribution of math scores is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(test scores is between 411 and 649)

$P(411 \leq x \leq 649)\\\\= P(\displaystyle\frac{411 - 530}{119} \leq z \leq \displaystyle\frac{649-530}{119})\\\\= P(-1 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -1)\\= 0.841 - 0.159 = 0.682 = 68.2\%$

b) P(scores is less than 411 or greater than 649)

$P(x < 411 < x, x > 649)\\=1 = P(411 \leq x \leq 649)\\=1 - 0.682\\=0.318 = 31.8\%$

c) P(score greater than 768)

P(x > 768)

$P( x > 768) = P( z > \displaystyle\frac{768 - 530}{119}) = P(z > 2)$

$= 1 - P(z \leq 2)$

Calculation the value from standard normal z table, we have,

$P(x > 768) = 1 -0.977 = 0.023 = 2.3\%$

5 0

4 years ago

Last week you watch four hours of TV this week you watched eight hours TV place points on the graph to show your activity for la

LUCKY_DIMON [66]

Answer:

Step-by-step explanation:

You should place a point on the graph at 4 for four hours of TV last week. And place a point at 8 for eight hours of TV this week.

8 0

4 years ago

Please help me asap!!!!!

Alika [10]

Answer:

392

Step-by-step explanation:

1.49×10⁸/3.8×10⁵ = 392

8 0

3 years ago

gary spent $350 on clothes. Jeans cost $50 each and shorts cost $15 each. if he bought 14 total items, how many jeans and shirts

mario62 [17]

Answer:

Step-by-step explanation:

6 0

3 years ago