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forsale [732]
3 years ago
12

I’ll give thanks to those that help of course. I promise

Mathematics
2 answers:
PIT_PIT [208]3 years ago
4 0

Answer: 74

Step-by-step explanation:

Luden [163]3 years ago
4 0

Answer:

93

Step-by-step explanation:

73+ 21

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50 pts please help me due today links or incorrect answers will get reported
Bumek [7]

Using the normal distribution, the area underneath the shaded region <u>between the two z-scores</u> is given by:

C. 0.6766.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

Hence, for this problem, the area is the <u>p-value of z = 0.75 subtracted by the p-value of z = -1.3</u>.

Looking at the z-table, the p-values are given as follows:

  • z = 0.75: 0.7734.
  • z = -1.3: 0.0968.

Then:

0.7734 - 0.0968 = 0.6766.

Which means that option C is correct.

More can be learned about the normal distribution at brainly.com/question/15181104

#SPJ1

3 0
1 year ago
What's this? I don't know
AveGali [126]

Answer:

it's a quadratic formula

Step-by-step explanation:

in the formula, substitute the value of <u>a as 1, b as 2 and c as -8</u>

then, you will get ur answer

3 0
3 years ago
If 30% of a number equals 25, find 60% of that number.
suter [353]

Answer:

14.94

Step by step:

 25/30 = 83.333

.30x83 = 24.9

.60 x 24.9 = 14.94

6 0
2 years ago
Read 2 more answers
Help me please o(* ̄▽ ̄*)ブ
Vesna [10]

Answer:

Hey there!

Part a) Distance from Wrexham to Oswetry: 15 miles.

Part b) Ruthin to Oswestry: 33 miles.

Total distance travelled for Part b= 33(5), or 165 miles.

6 0
2 years ago
The trapezoids are similar. Both the left and right sides of the trapezoids are not parallel. Find the values of x, a, b, r° and
Artemon [7]

Answer:

see explanation

Step-by-step explanation:

Since the figures are similar then the ratios of corresponding sides are equal, that is

\frac{12}{x} = \frac{9}{6} ( cross- multiply )

9x = 72 ⇒ x = 8

Also

\frac{a}{5} = \frac{9}{6} ( cross- multiply )

6a = 45 ⇒ a = 7.5

And

\frac{b}{7} = \frac{9}{6} ( cross- multiply )

6b = 63 ⇒ b = 10.5

Corresponding angles in the 2 figures are congruent, thus

∠s = 83°

Each lower base angle is supplementary to the upper base angle on the same side, hence

∠r = 180° - 30° = 150°

5 0
3 years ago
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