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faltersainse [42]
3 years ago
5

Which statements are true about quadrilaterals? Choose all answers that are correct. A. All 4-sided shapes are parallelograms. B

. Some rectangles are squares. C. All squares are rhombuses. D. Some trapezoids are parallelograms.
Mathematics
1 answer:
Katarina [22]3 years ago
6 0
All 4-sided shapes is one of the features.
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Suppose you want to estimate the proportion of cars that are sport utility vehicles (SUVs) being driven in Kansas City, Missouri
ahrayia [7]

Answer:

<em>The sample size 'n' = 721</em>

<em>Number of cars 'n' = 721</em>

 Step-by-step explanation:

<u><em>Explanation</em></u>:-

<em>Given  Population proportion 'p' = 0.40</em>

<em>Given Margin of error = 0.03</em>

<em>90% of level of significance </em>

<em>                                         </em>Z_{\frac{\alpha }{2} } = 1.645<em></em>

<em>The Margin of error is determined by</em>

<em></em>M.E = \frac{Z_{\frac{\alpha }{2} S.D} }{\sqrt{n} }<em></em>

0.03 = \frac{1.645 X \sqrt{0.40(1-0.40) } }{\sqrt{n} }

on calculation , we get

0.03√n = 0.8058

\sqrt{n} = \frac{0.8058}{0.03} = 26.86

squaring on both sides , we get

n = 721.45≅721

<u><em>conclusion</em></u>:-

<em>The sample size 'n' = 721</em>

<em>Number of cars 'n' = 721</em>

 

5 0
3 years ago
SOMEONE PLS HELP will mark brainliest
kogti [31]

Answer:

f(t)=-16t^2+8t+2

Step-by-step explanation:

Take the initial velocity(8)put in for vt. Then take height(2) and put in for s. giving you the equation. f(t)= -16t^2+8t+2

7 0
3 years ago
ILL GIVE YOU BRAINLIST !!!! What is the slope of this table?
VLD [36.1K]

Answer: Slope is m = 2/3

Step-by-step explanation:

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(3,2) (6,4) (9,6) (12,8)

-Use the slope formula and use any two points from those four points in order to find the slope:

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

-The two points I use are  (3, 2)  and (6,4 ) for the equation:

m = \frac{4 - 2}{6-3}

m= \frac{2}{3}

So, the slope of the table is \frac{2}{3}.

8 0
3 years ago
A family is having a pool built in their backyard. Their yard is rectangular and measures 14x by 19x and the pool is circular wi
valentina_108 [34]
You want to find the area left over after the pool is built, so subtract the area of the pool from the area of the yard.

Area of Yard= Base x Height = 14x*19x = 266x^2
Area of Circle= Pi x Radius^2 = (6x)^2*pi = 36x^2*pi

Now subtract the two areas:
266x^2-(36^2*pi)
266x^2-36x^2*pi

Take 2x^2 as a common factor:
2x^2(133-18pi)

D: <span>2x^2(133-18pi)

Hope this helps :)</span>
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3 years ago
What is the value of B ?
Virty [35]

Answer: 70.1

Step-by-step explanation:

8 0
3 years ago
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