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3 years ago

((3^3 - 7) • 5)/10 + ((1+3+6+9)-10)

Mathematics

1 answer:

jasenka [17]3 years ago

3 0

Answer:

Step-by-step explanation:

(33−7)(5)/10+1+3+6+9−10

= (27−7)(5)/10+1+3+6+9−10

= (20)(5)/10+1+3+6+9−10

= 100/10+1+3+6+9−10

=10+1+3+6+9−10

=10+4+6+9−10

=10+10+9−10

=10+19−10

=10+9

=19

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The queen marys 2’d height above water is about the same as a 14 story building, what is the queen mary twos height above water,

Alex_Xolod [135]

Answer: Length 1,132 ft

Step-by-step explanation: Im not sure if this is the one your talking about but here.

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3 years ago

Find the midrange for the group of data items.<br> 2, 2, 5, 5, 8, 8, 10

elena55 [62]

Answer:

Step-by-step explanation:

Answer:5

Start striking off the numbers one from the left and then from the right continuously until you're left with a number in the middle

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3 years ago

If a six-sided die(1-6) and a ten-sided die(1-10) are rolled simultaneously, then what is the probability of rolling both with a

AnnyKZ [126]

Answer:

$Pr = 0.20$

Step-by-step explanation:

Given

$n_1 = 10$ ---- 10 sided

$n_2 = 6$ --- 6 sided

Required

$P(x_1,x_2 > 4)$

First, list out the sample space

$S = \{(1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6)(2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6)$

$(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6) (4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6)$

$(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6) (6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)$

$(7, 1) (7, 2) (7, 3) (7, 4) (7, 5) (7, 6) (8, 1) (8, 2) (8, 3) (8, 4) (8, 5) (8, 6)$

$(9, 1) (9, 2) (9, 3) (9, 4) (9, 5) (9, 6) (10, 1) (10, 2) (10, 3) (10, 4) (10, 5) (10, 6)\}$

$n(S) = 60$ --- total outcomes

The event that the outcome of both is greater than 4 is:

$x_1,x_2> 4 = \{(5, 5) (5, 6)(6, 5) (6, 6)(7, 5) (7, 6) (8, 5) (8, 6)(9, 5) (9, 6) (10, 5) (10, 6)\}$

$n(x_1,x_2>4) = 12$

So, the probability is:

$Pr = \frac{n(x_1,x_2>4)}{n(S)}$

$Pr = \frac{12}{60}$

$Pr = 0.20$

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3 years ago

Which of the following pairs could be reasonable approximations for the diameter and circumference of a circle? 18 inches and 57

chubhunter [2.5K]

Answer:

18 inches and 57 inches

Step-by-step explanation:

The diameter and the circumference of a circle are proportionate to each other.

The circumference of a circle will always be the diameter times $\pi$ . We know this because the circumference of a circle is represented as

$2 \pi r$

Since the diameter is twice the radius, we multiply the radius by 2 - there's already a $\cdot 2$ in this equation, so $c = \pi d$ .

1st option: $18\cdot3.14 = 56.52$ , this is close to 57 so it's reasonable.

2nd option: $3\cdot 3.14 = 9.42$ , this isn't close to 28 at all.

3rd option: $33 \cdot 3.14 = 103.62$ , this isn't close to 80 at all.

So the 1st option is reasonable.

Hope this helped!

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3 years ago

Read 2 more answers

The pregnancy length in days for a population of new mothers can be approximated by a normal distribution with a mean of 270 day

dusya [7]

Answer:

a) 281 days.

b) 255 days

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 270, \sigma = 8$