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4 years ago

Find the value of x and y.

Mathematics

2 answers:

Gre4nikov [31]4 years ago

6 0

x = 90 and y = 30

x is an right angle which always is 90 degrees and all of the sides are congruent so ∡c is≅∡b and angle c=60 so 90+60=150; 180-150=30

(180 is the total for any set of angles regaurdless of degrees)

ozzi4 years ago

3 0

UUUUhhhhhh....i cant really see it sorry.

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What dose (2x) × (2x) × (2x) equal

Alisiya [41]

8 becasue 2×2=4×2=8 PLEASE MARK ME BRAINLIEST

5 0

3 years ago

Read 2 more answers

PLEASE HELP

Allushta [10]

Answer:

292.8

Step-by-step explanation:

V= ABh

= 24·12.2

≈ 292.8 ft

7 0

3 years ago

I have no clue on this one either

taurus [48]

Answer:

Area of the triangle = 210 cm^2 .

Step-by-step explanation:

Perimeter of triangle = 4x + 1 + 3x - 1 + 3x = 70

10x = 70 - 1 + 1 = 70

x = 7.

Area A = 1/2 * base * height

= 1/2 * 3x * (3x - 1)

= 1/2 * 3(7) * (3(7) -1)

= 1/2 * 21 * 20

= 210.

4 0

3 years ago

If f(x) = 4x - 8 and g(x) = 5x + 6, find (f+ g)(x).

yan [13]

Answer:

9x - 2

Step-by-step explanation:

f(x) = 4x - 8

g(x) = 5x + 6

because it's (f + g)(x), we can simply add the functions together

{note: don't get thrown off by the (x) being separate parentheses--distributing the x first can help it look familiar:

(x)(f + g)

fx + gx,

it's the same thing}

(4x - 8) + (5x + 6)

here, we want to combine like terms to simplify:

4x + 5x - 8 + 6

4x + 5x - 2

9x - 2

So, (f + g)(x) = 9x - 2

hope this helps!! have a lovely day :)

5 0

2 years ago

A manager is assessing the correlation between the number of employees in a plant and the number of products produced yearly. Th

Contact [7]

Answer:

A)there is a strong positive correlation

B)A function that best fits the data is $\widehat{y}=6x+10$

C)Slope indicates the rate of change of Number of products per employee

y intercept indicates number of products when number of employees are 0

Step-by-step explanation:

Number of employees (x) 0 25 50 75 100 125 150 175 200

Number of products (y) 10 160 310 460 610 760 910 1060 1210

Part A: Is there any correlation between the number of employees in the plant and the number of products produced yearly?

Mean of x values = $\frac{0+25 + 50 + 75 + 100 + 125 + 150 + 175 + 200}{9}=900$

Mean of y values = $\frac{10+160+ 310+ 460+ 610+ 760+ 910+ 1060+ 1210}{9} =610$

$\sum(x-\bar{x})^2= 37500$

$\sum(y - \bar{y})^2 = 1350000$

N =No. of observations= 9

$\sum(x - \bar{x})(y-\bar{y}) = 225000$

R Calculation

$r = \frac{\sum((x-\bar{x})(y - \bar{y}))}{\sqrt{\sum(x - \bar{x})^2(y-\bar{y})^2}}$

$r=\frac{225000}{\sqrt{(37500)(1350000)}}\\r= 1$

So, there is a strong positive correlation

B: Write a function that best fits the data.

Regression Equation = ŷ = bx + a

$b = \frac{225000}{37500} = 6\\a = \bar{y} -b \bar{x} = 610 - (6 \times 100) = 10\\ \widehat{y}= 6x + 10$

So, a function that best fits the data is $\widehat{y}=6x+10$

C)What does the slope and y-intercept of the plot indicate?

Slope indicates the rate of change of Number of products per employee

y-intercept indicates the y-coordinate of a point where a line, curve, or surface intersects the y-axis.

So, y intercept indicates number of products when number of employees are 0 .

8 0

4 years ago