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3 years ago

Pls hurry it’s urgent!!!!!!

Mathematics

1 answer:

Ad libitum [116K]3 years ago

7 0

Answer:

I'm pretty sure they're perpendicular, so B.

hope it's correct!

Step-by-step explanation:

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Quanto fa 5+5<br><br> Quanto fa 5+5

Irina-Kira [14]

Answer:

Step-by-step explanation:

5+5=10

8 0

3 years ago

Read 2 more answers

The total surface area is _ square inches

Fantom [35]

Answer:

169

Step-by-step explanation:

(19×3)+(8×5)+(9×8)=169

8 0

3 years ago

You took a random sample of 12 two-slice toasters and found the mean price was $61.12 and the standard deviation was $24.62. Con

Minchanka [31]

Answer:

Step-by-step explanation:

We want to determine a 95% confidence interval for the population mean for the prices of slice toasters.

Number of sample, n = 12

Mean, u = $61.12

Standard deviation, s = $24.62

For a confidence level of 95%, the corresponding z value is 1.96.

We will apply the formula

Confidence interval

= mean ± z ×standard deviation/√n

It becomes

61.12 ± 1.96 × 24.62/√12

= 61.12 ± 1.96 × 7.107

= 61.12 ± 13.93

The lower end of the confidence interval is 61.12 - 13.93 =47.19

The upper end of the confidence interval is 61.12 + 13.93 = 75.05

5 0

3 years ago

Decide whether or not each equation represents a proportional relationship. A.The remaining length (L) of 120-inch rope after x

bulgar [2K]

Answer and Step-by-step explanation: An equation represents proportional relationship when dividing the quantities of the equation results in a quotient that is always the same. For example, in general:

Equation: y = mx

$\frac{y}{x}$ = m

m is a constant value, which means is the same.

A. Equation: 120 - x = L

Equation from alternative A is NOT proportional since the division of the quantities doesn't result in a constant.

B. Equation: 1.08p = t

Dividing total cost per item's price, will always give the sales tax, which is constant. So, this equation IS proportional.

$\frac{t}{p}=1.08$

C. Equation: $x=\frac{m}{4}$

This equation is proportional because dividing marbles per how much each sister gets, always gives the number of sisters:

$\frac{m}{x}=4$

D. Equation: $V=12s^{2}$

This equation is NOT proportional because side length is squared, so it is not constant linearly.

8 0

3 years ago

Last question! Any explanation is appreciated, sorry for bad quality

Lesechka [4]

Answer:

1/2

Step-by-step explanation:

When you have two points you need to use the slope formula:

$m=\frac{y_{2}-y_{1} }{x_{2}-x_1}$

x1 and y1 is the first point and x2 and y2 is the second point, remember that the first number is X and the other is Y so...

$m=\frac{5-4}{3-1} \\m=\frac{1}{2}$

1/2 is the slope of the points

3 0

3 years ago