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3 years ago

Find the distance speed=96km/h time=20 mins

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

6 0

Answer:

32km

Step-by-step explanation:

speed=96km/h

time=20mins=1/3hour

<h3>Distance=Speed×Time</h3>

➜96×1/3

➜96/3

➜32km

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Find the equation for the line that passes through the point (3,-2), and that is perpendicular to the line with the equation x =

kompoz [17]

Step-by-step explanation:

x = 2 is, as you can see, parallel to the y-axis.

perpendicular to this (= crosses the original line in an angle of 90 degrees) is then a line parallel to the x-axis.

that means y is constant. all points on that line will have the same y value.

and we know one point already : (3, -2)

so all points of the perpendicular line will have y = -2

and that is the equation of the perpendicular line :

y = -2

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3 years ago

What is the slope of a line that passes through -8, -16 and 18, 5?

ddd [48]

Slope formula:

y2 - y1
_____
x2 - x1

5 + 16
_____
18 + 8

21
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26

slope is 21/26

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4 years ago

g Students conducted a survey and found out that 36% of their peers on campus had tattoos but only 4% of their peers were smoker

IgorC [24]

Answer:

D) No, because either np or n(1−p) are less than 15.

Step-by-step explanation:

Percentage of students who had tattoos = 36%

Percentage of students who were smokers = 4%

Sample size = n = 100

The condition to use the Normal distribution as an approximation to construct the confidence interval for population proportion is:

Both np and n(1-p) must be equal to or greater than 15.

Since, we are interested in smokers only, so p = 4% = 0.04

np = 100 x 0.04 = 4

n (1 - p) = 100 x 0.96 = 96

Since, np < 15, we cannot use the Normal distribution as an approximation here.

Therefore, the correct answer is:

No, because either np or n(1−p) are less than 15.

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3 years ago

Find the sum of the first 10 terms for the sequence {21, 63, 189, . . . }.

antiseptic1488 [7]

The sum of n terms of a geometric sequence with first term "a" and common ratio "r" is given by
$S_{n}=a\dfrac{r^{n}-1}{r-1}$
You have a=21, r=3, so the sum of 10 terms is
$S_{10}=21\cdot \dfrac{3^{10}-1}{3-1}=620004$

The appropriate choice is the 2nd one:
620,004

3 0

4 years ago

Read 2 more answers

If m1 = 65°, find each measure. Give your reasoning. <br><br> its example 2

BlackZzzverrR [31]

Answer:

m2=125°

m3=65°

m4=125°

m5=65°

m6=125°

m7=65°

m8=125°

i know the reason in French if you want

Step-by-step explanation:

m2=180-65=125°

m2 = m4 =125°

m3 =m1 =65°

m3= m5 =65°

m4 =m6=125°

m7=m5 =65°

m8=m6=125°

4 0

3 years ago