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3 years ago

WILL GIVE BRAINLIEST

Mathematics

2 answers:

Lera25 [3.4K]3 years ago

7 0

31.11483 <span>Mph</span> or 50.074464972km/h...........................

this took so long

AlekseyPX3 years ago

5 0

Speed boat departed 1.75 hrs after steam boat1.8 hrs after speed boat departure, steam boat has sailed for a total: 1.8+1.75 = 3.55 hrssteam boat's speed is 36.8 km/hr, so it has traveled: 3.55*36.8 = 130.64 km
speed boat is 86.9 km behind steam boat. so it is 130.64-86.9 = 43.74 km from portspeed boat's speed = 43.74/1.8 = 24.3 km/hr
hope u dont mind me double-dipping :)

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1,8,27; 64; Rule Missing numbers

zubka84 [21]

Answer:

rule: f(n) = n³

missing numbers: 125, 216, 343, 512, 729

Step-by-step explanation:

Your familiarity with the cubes of small integers helps you recognize each of these numbers is a cube. Their sequence is the sequence of cubes of increasing natural numbers.

1 = 1·1·1 = 1³

8 = 2·2·2 = 2³

27 = 3·3·3 = 3³

64 = 4·4·4 = 4³

The rule is ...

f(n) = n³

The cubes of 5 through 9 will complete the set of numbers ...

1, 8, 27, 64, 125, 216, 343, 512, 729

7 0

2 years ago

Pls help ;-; Student #2:

ss7ja [257]

Answer:

solved the solution incorrectly and graphic their solution correctly.

Step-by-step explanation:

this is because if 4x + 1<= -4

the next step will be to subtract 1 from both sides.

BUT if their solution is x<= 2, they objectively graphed it correctly

6 0

3 years ago

Read 2 more answers

A fourth grade class of 28 students is given a standardized math test. The mean score of the 12 boys is 25 with a standard devia

Mashcka [7]

Answer:

The standard error for the sampling distribution is 1.323.

Step-by-step explanation:

Let <em>X</em> = scores of girls and <em>Y</em> = scores of boys.

The information provided is:

$\bar x=24\\s_{x}=4\\n_{x}=16\\\bar y=25\\s_{y}=3\\n_{y}=12$

As the population standard deviations are not known, use a pooled standard deviation to estimate the standard error of the sampling distribution.

The formula of pooled standard deviation is:

$S_{p}=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}$

Compute the standard error for the sampling distribution as follows:

$SE=\sqrt{\frac{s_{x}^{2}}{n_{x}^{2}}+\frac{s_{y}^{2}}{n_{y}^{2}}}=\sqrt{\frac{4^{2}}{16}+\frac{3^{2}}{12}}=\sqrt{1+\frac{9}{12}}=\sqrt{\frac{21}{12}}=1.323$

Thus, the standard error for the sampling distribution is 1.323.

7 0

3 years ago

Donovan broke the 100m sprint world record at the olympics within 9.84s in contrast a dog runs at a speed of 30km per hour .If t

Free_Kalibri [48]

<h2>Answer:</h2>

No the dog cant catch up with Donovan

<h3>Step-by-step explanation:</h3>

30km to meters is 30000

30000 meters divided by 60 to to get how many meters per second

= 500 a dog travels 500 meters per minute

100m divided by 9.87 = 10.1 meters per second

500 divided by 60 = 8.3 meters per second

Donovan can run faster than the dog by 1.8 meters per second

3 0

3 years ago

I spent $15 on lollipops. Snickers was $3 less then twice what I paid for the lollipops. How much was the snickers?

Ne4ueva [31]

15%2=7.50-3=4.50
The snickers cost $4.50

3 0

3 years ago