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Yuri [45]
3 years ago
12

Please thank you so much yall

Mathematics
2 answers:
trapecia [35]3 years ago
6 0
21. 2 meters are equal to 200 centimeters. To find out how many can be cut, divide. 200/10 is equal to 20.
Leto [7]3 years ago
4 0
19. There are 24 hours in a day and Maria travelled for 15 days so multiply the two:
24*15=360

So Maria travelled for 360 hours.


22a. False; 2,000 lbs = 1 Ton
22c. True; 48 oz = 3 lbs
You might be interested in
Domain<br> Range<br><br><br> The above is ______
IRISSAK [1]

Answer:

Function.  

Domain:   {-3, 5, 3, -5}

Range:  {-6, 2, 1}

Step-by-step explanation:

The domain of the relation shown here is {-3, 5, 3, -5}.  Note how each of these elements is linked to ONLY ONE value in the range {-6, 2, 1}.  Because of that, we conclude that the table shown represents a function.

5 0
3 years ago
5. What is the value of the expression [(29 + 18) +<br>(17 - 8)] = 8?<br>S​
Vladimir [108]

Answer:

False ; the answer to that equation is 56

Step-by-step explanation:

6 0
3 years ago
A survey of 200 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take
Lina20 [59]

Answer:

The 95% confidence interval for the true proportion of university students who use laptop in class to take notes is (0.2839, 0.4161).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population proportion <em>P</em> is:

CI=p\pm z_{\alpha/2}\sqrt{\frac{p(1- p)}{n}}

The information provided is:

<em>x</em> = number of students who responded as"yes" = 70

<em>n</em> = sample size = 200

Confidence level = 95%

The formula to compute the sample proportion is:

p=\frac{x}{n}

The R codes for the construction of the 95% confidence interval is:

> x=70

> n=200

> p=x/n

> p

[1] 0.35

> s=sqrt((p*(1-p))/n)

> s

[1] 0.03372684

> E=qnorm(0.975)*s

> lower=p-E

> upper=p+E

> lower

[1] 0.2838966

> upper

[1] 0.4161034

Thus, the 95% confidence interval for the true proportion of university students who use laptop in class to take notes is (0.2839, 0.4161).

7 0
3 years ago
Read 2 more answers
60 is 5 times as great as k
jeka57 [31]
60=5k is the answer for your question
7 0
3 years ago
Find the slope of the line passing through the points (8,-6) <br> and (4,-8)<br> .
Murljashka [212]

Answer:

1/2 is the slope of the line

Step-by-step explanation:

To find slope, use the following equation

slope (m) = (y₂ - y₁)/(x₂ - x₁)

First, set each coordinate. Let:

(x₁ , y₁) = (8 , -6)

(x₂ , y₂) = (4 , -8)

Plug in the corresponding numbers for the corresponding variables.

m = (y₂ - y₁)/(x₂ - x₁)

m = (-8 - (-6))/(4 - 8)

Simplify. Note that two negative signs would result in a positive sign.

m = (-8 + 6)/(4 - 8)

Combine like terms.

m = -2/-4

Simplify. Divide common factors from both the numerator and denominator.

m = (-2/-4)/(-2/-2) = 1/2

1/2 is the slope of the line

~

4 0
3 years ago
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