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Dmitry [639]
3 years ago
6

In the given figure, find the value of a and b.​

Mathematics
2 answers:
Sladkaya [172]3 years ago
6 0
Answer is 180- (60+70) = 50°
mr Goodwill [35]3 years ago
3 0
A =50 and I can’t really see B
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yKpoI14uk [10]

Answer:

C.

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5 0
2 years ago
Here are two sets of numbers, a and b. Set a :200,104,100,160. Set b: 270,400,483,300, x. Mean of set a: mean of set b= 3:8. Wor
LenKa [72]

Given:

The given sets are:

Set a : 200, 104, 100, 160.

Set b: 270, 400, 483, 300, x.

Mean of set a: mean of set b= 3:8

To find:

The value of x.

Solution:

Formula for mean:

Mean=\dfrac{\text{Sum of observations}}{\text{Number of observation}}

The mean of set of a is:

Mean=\dfrac{200+104+100+160}{4}

Mean=\dfrac{564}{4}

Mean=141

The mean of set of b is:

Mean=\dfrac{270+400+483+300+x}{5}

Mean=\dfrac{1453+x}{5}

Mean=\dfrac{1453+x}{5}

It is given that,

Mean of set a: mean of set b= 3:8

\dfrac{141}{\dfrac{1453+x}{5}}=\dfrac{3}{8}

\dfrac{705}{1453+x}=\dfrac{3}{8}

8\times 705=3\times (1453+x)

5640=4359&#10;+3x

Isolate the variable x.

5640-4359&#10;=3x

1281&#10;=3x

Divide both sides by 3.

\dfrac{1281}{3}&#10;=x

427&#10;=x

Therefore, the value of x is 427.

3 0
2 years ago
Each big square below represents one whole.<br> What percent is represented by the shaded area?
kirza4 [7]

Answer:

145%. The left one is 100% and then the right is the 45%.

5 0
3 years ago
Can you please help me thank you!!!
taurus [48]

Answer:

517.5 mi^2

Step-by-step explanation:

Divide shapes into 3 shapes ( 1 triangle and 2 rectangles

b = 17

h = 25

Area of triangle =  Bh

A =  (17)(25)

A = 212.5 mi^2

Area of 1st rectangle = lw = 17(9) = 153 mi^2

Area of 2nd rectangle = lw = 19(8) = 152 mi^2

Area of figure = 212.5 +153 + 152 = 517.5 mi^2

8 0
2 years ago
A sand box measures 10 feet long by 8 feet wide by 1 foot deep what area of land must be clearest
Andrei [34K]

Answer: 80 cubic feet

Step-by-step explanation:

Hello! Your question was not very clear, but I'm assuming you need to find the volume of the sandbox.

To find volume, you need to multiply height by width by length, which is h*l*w.

Height: 1 foot

Width: 8 feet

Length: 10 feet

V=8*10*1=80 cubic feet.

6 0
3 years ago
Read 2 more answers
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