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4 years ago

Please Help Me!!! :)

Mathematics

1 answer:

yuradex [85]4 years ago

4 0

Answer:

3x² + $\frac{3}{2}$ x - $\frac{3}{2}$

Step-by-step explanation:

1/2bh

1/2(x-9+x+8)(3x+3)

1/2(2x-1)(3x+3)

1/2(6x²+6x-3x-3)

3x² + $\frac{3}{2}$ x - $\frac{3}{2}$

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Write 23 in significant notation

SOVA2 [1]

*I think you meant scientific notation.*

23 in scientific notation would be 2.3 x 10^1.

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4 years ago

Read 2 more answers

Assume that thermometer readings are normally distributed with a mean of degrees and a standard deviation of 1.00degrees C. A th

Andrew [12]

Answer:

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0 degrees

Standard Deviation, σ = 1 degrees

We are given that the distribution of thermometer readings is a bell shaped distribution that is a normal distribution.

Formula:

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

P(Between 0.50 degrees and 1.75 degrees)

$P(0.50 \leq x \leq 1.75)\\\\ = P(\displaystyle\frac{0.50 - 0}{1} \leq z \leq \displaystyle\frac{1.75-0}{1})\\\\ = P(0.50 \leq z \leq 1.75)\\= P(z \leq 1.75) - P(z < 0.50)\\= 0.9599 - 0.6915 = 0.2684 = 26.84\%$

0.2684 is the probability that the temperature reading is between 0.50 and 1.75.

7 0

4 years ago

Solve The Problems

spayn [35]

X - 7 > 10
x > 10 + 7
x > 17

3x < = 21
x < = 21/3
x < = 7

5a - 2 < 18
5a < 18 + 2
5a < 20
a < 20/5
a < 4

2t + 8 > = -4 (t + 1)
2t + 8 > = -4t - 4
2t + 4t > = -4 - 8
6t > = - 12
t > = -12/6
t > = -2

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3 years ago

Read 2 more answers

Solve for x.<br> (1/3) over 3 =x over 8

Ugo [173]

8/3=3x (cross multiplied to get this)

X=8/9 (divided both sides by 3)

Hope this helps :)

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3 years ago

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Circle O has a circumference of approximately 28.3 cm. Circle O with radius r is shown. What is the approximate length of the ra