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3 years ago

Can someone figure this out

Mathematics

1 answer:

maria [59]3 years ago

5 0

Answer:

Option C

Step-by-step explanation:

Option C is correct one

y= -2x+1, x>1

y= -x+2, x≤1

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Find the area of wyz A. 18 cm B 36 cm C.72 cm D 144

Oliga [24]

Answer:

36 cm^2

Step-by-step explanation:

area of triangle = length * height * 1/2

6 * 12 * 1/2 = 72 * 1/2 = 36

6 0

3 years ago

An art history professor assigns letter grades on a test according to the following scheme.A: Top 5% of scoresB: Scores below th

adoni [48]

Answer:

Grade B score:

$76 \leq x \leq 89$

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73.3

Standard Deviation, σ = 9.7

We are given that the distribution of score on test is a bell shaped distribution that is a normal distribution.

Formula:

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

B: Scores below the top 5% and above the bottom 62%

We have to find the value of x such that the probability is 0.62

$P( X > x) = P( z > \displaystyle\frac{x - 73.3}{9.7})=0.62$

$= 1 -P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.62$

$=P( z \leq \displaystyle\frac{x - 73.3}{9.7})=0.38$

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

$\displaystyle\frac{x - 73.3}{9.7} = 0.305\\\\x = 76.26$

We have to find the value of x such that the probability is 0.05

$P(X < 0.95) = \\\\P( X < x) = P( z < \displaystyle\frac{x - 73.3}{9.7})=0.95$

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

$\displaystyle\frac{x - 73.3}{9.7} = 1.645\\\\x = 89.26$

Thus, the numerical value of score to achieve grade B is

$76 \leq x \leq 89$

7 0

3 years ago

Stefanie is painting her bedroom. She can paint

quester [9]

2/5= 12/1/3 feet
1 hour = 30/5/6 feet

8 0

3 years ago

Read 2 more answers

Please help with the answer for 7/9 -1/3=

Levart [38]

Answer:

4/9 is the answer

Hope it correct and it helps

6 0

3 years ago

Read 2 more answers

Please help me figure this out for me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

nordsb [41]

Pretty sure its B but if im wrong please dont be mad.

7 0

3 years ago