All categories

2 years ago

PLEASE HELP ILL GIVE BRAINLIEST Sara is making a cake in a trapezoid

Mathematics

1 answer:

alukav5142 [94]2 years ago

5 0

Answer:

D im not sure just my opinion

You might be interested in

Colossal canyon was formed in the shape of a parabola.The graph below shows the shape of the canyon.What interval is the functio

Roman55 [17]

Answer:

The function increasing ⇒ 3 ≤ x ≤ 6 answer C

Step-by-step explanation:

∵ The vertex of the parabola is (3 , -6)

∴ The minimum value = -6 at x = 3

∵ The left part of the parabola is decreasing because the value of y decreased from 3 to -6 when 0 ≤ x ≤ 3

∵ The right part of the parabola is increasing because the value of y increased from -6 to 3 when 3 ≤ x ≤ 6

∴ The function is increasing at interval 3 ≤ x ≤ 6

8 0

3 years ago

Expand and simplify 5(y-2) 2(y-3)

Julli [10]

(5y-10)(2y-6)
10y-30y-20y+60
-40y+60

Hope that helps!

7 0

3 years ago

Identify 3 substances or objects for each state of matter

Marrrta [24]

SOLID: gold, wood, sand
LIQUID: water, milk, blood
GAS: oxygen, helium, carbon dioxide

5 0

3 years ago

Find the surface area of the cylinder.

Lunna [17]

Answer:

1188 inches

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

The Greater Pittsburgh Area Chamber of Commerce wants to estimate the mean time workers who are employed in the downtown area sp

Valentin [98]

Answer:

98% Confidence interval: (31.74,38.4)

Step-by-step explanation:

We are given the following data set:

29, 38, 38, 33, 38, 21, 45, 34, 40, 37, 37, 42, 30, 29, 35

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{526}{15} = 35.07$

Sum of squares of differences = 506.93

$S.D = \sqrt{\displaystyle\frac{506.93}{14}} = 6.02$

98% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.02} = \pm 2.145$

$35.07 \pm 2.145(\frac{6.02}{\sqrt{15}} ) = 35.07 \pm 3.33 = (31.74,38.4)$

Thus, there is 98% confidence that the population mean number of minutes spent traveling by workers is between 31.74 mins and 38.40

4 0

3 years ago