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3 years ago

What is this? I don't know and I'm struggling bad please help

Mathematics

2 answers:

faltersainse [42]3 years ago

4 0

Answer:

steeper

Step-by-step explanation:

y = mx + c where m is the slope and c is the y-intercept.

The slope has been changed from 2 to 4. The higher the slope, the steeper it is. Thus, the slope is steeper now.

ser-zykov [4K]3 years ago

4 0

Answer:

i'm not sure sorry

Step-by-step explanation:

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Roger's Diner offers its clients a choice of regular and diet soda. Last night, the diner served 135 regular sodas and 45 diet s

kozerog [31]

Answer:

75% served are regular

Step-by-step explanation:

135+45 = 180 total sodas.

135/180 = 0.75

3 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

ABCD is a parallelogram. If AB= 3x -7 and CD = 5x - 19, find x.

kakasveta [241]

Answer:

x=6

Step-by-step explanation:

3x-7=5x-19

12=2x

x=6

8 0

3 years ago

At 3pm the temperature was 9 degrees .By 11pm ,it had dropped 31 degrees .What was the temperature at 11pm

o-na [289]

Answer:

-22

Step-by-step explanation:

9-31=-22

5 0

3 years ago

Please helpppp!?!!!!?

____ [38]

It would be 9!!!
Hope that helps!!!

3 0

3 years ago

Read 2 more answers