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2 years ago

Pleas answer this fast i dont under stand

Mathematics

2 answers:

Lorico [155]2 years ago

5 0

Answer:

196ft^2

Step-by-step explanation:

direct the diagram as shown in my image attachment

A = 1/2 x (18-(9-7)) x (6+8) = 112ft^2

B = 2 x (6+8) = 28ft^2

C = 7 x 8 = 56ft^2

total area = 112 + 28 + 56 = 196ft^2

for more math tips do check out my insta: learntionary

NemiM [27]2 years ago

4 0

Answer:

196 ft²

Explanation:

Consider the given image.

Area of ΔABC

= ½bh

= ½ × (18 ft + 7 ft - 9 ft) × (8 ft + 6 ft)

= ½ × 16 ft × 14 ft

= 8 ft × 14 ft

= 112 ft²

Area of rectangle BEDC

= lw

= (8 ft + 6 ft) × (9 ft - 7ft)

= 14 ft × 2 ft

= 28 ft²

Area of rectangle EFGH

= lw

= 8 ft × 7 ft

= 56 ft²

Total area of the figure

= Area of ΔABC + Area of rectangle BEDC + Area of rectangle EFGH

= 112 ft² + 28 ft² + 56 ft²

= 196 ft²

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klio [65]

Answer:

Step-by-step explanation:

Hello!

Given the variables

X: daily hotel room rate

Y: amount spent on the entertainment

See second attachment for scatter plot.

The population regression equation is E(Yi)= α + βXi

To estimate the y-intercept and the slope of the regression equation you have to apply the following formulas:

$b= \frac{sum XY-\frac{(sumX)(sumY)}{n} }{sumX^2-\frac{(sumX)^2}{n} }$

a= Y[bar]-bX[bar]

n= 9; ∑X= 945; ∑X²= 103325; ∑Y= 1134 ∑Y²= 148804; ∑XY= 123307

X[bar]= ∑X/n= 945/9= 105

Y[bar]= ∑Y/n= 1134/9= 126

$b= \frac{123307-\frac{945*1134}{9} }{103325-\frac{(945)^2}{9} }= 1.03$

a= 126 - 1.03*105= 17.49

^Y= 17.49 + 1.03Xi

Slope interpretation: The estimated average amount spent on entertainment increases 1.03 every time the daily hotel room rate increases one unit.

If the room rate for Chicago is $128 (X), to predict the mount spent in entertainment (Y) you have replace it in the estimated regression line:

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I hope this helps!

6 0

3 years ago

I need help. I'm failing math

Alexxandr [17]

Answer:

B i believe

Step-by-step explanation:

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2 years ago

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Vladimir79 [104]

Answer:

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2 years ago

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3 years ago

Read 2 more answers

1. a) if 60%% students passed in Physics, 55% pass in Math and 40% fail in both subjects, what percent of students are pass in b

hammer [34]

Answer:

75%

Step-by-step explanation:

Percent. of students passed who in physics =60% Percent. of students who passed in maths = 55%

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= 115%

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2 years ago