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3 years ago

Find the value of x given that the mean is 6: 2, 8, 9, 7, 6, x

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

(32 + x)/6=6

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2x +4- 3 (x + 5) = -2x + 4 x=-26 X=15 X=-5 x=-15

____ [38]

2x+4 -3x -15=-2x+4

-1x-11=-2x+4

-11=-1x +4

-15=-1x

15=c

6 0

3 years ago

Which statement best illustrates using the vertical line test to determine if the graph below is a function of X? ANSWER FAST IL

MaRussiya [10]

Answer:

The graph is nor a function og x because tha like y=0 intersects the graph at two points

7 0

2 years ago

Alyssa spent half of her allowance going to the movies. She washed the family car and earned 7 dollars. What is her weekly allow

Katarina [22]

She gets 18 dollars a week

7 0

3 years ago

Please help how do i find the area of the shape?

Orlov [11]

Answer:

Do not listen to the other answer! Here is how you solve that.

Step-by-step explanation:

For the semicircle, here is the formula for area: $A= \frac{1}{2}(\pi r^2)$

For the triangle, here is the formula for area: $A=\frac{1}{2}(bh)$

Then, add.

So,

Triangle:

$A=\frac{1}{2}(9*12)$

$A=54$

Semicircle:

$A=\frac{1}{2}(\pi 6^2)$

$A=18\pi$

Your answer is $Area = 54 + 18\pi$

6 0

3 years ago

A student stands 20 m away from the foot

Ostrovityanka [42]

Answer:

Height of tree is $\approx$ 15 m.

Step-by-step explanation:

Given that student is 20 m away from the foot of tree.

and table is 1.5 m above the ground.

The angle of elevation is: 34°28'

Please refer to the attached image. The given situation can be mapped to a right angled triangle as shown in the image.

AB = CP = 20 m

CA = PB = 1.5 m

$\angle C$ = 34°28' = 34.46°

To find TB = ?

we can use trigonometric function tangent to find TP in right angled $\triangle TPC$

$tan \theta = \dfrac{Perpendicular}{Base}\\tan C= \dfrac{PT}{PC}\\\Rightarrow tan 34.46^\circ = \dfrac{PT}{20}\\\Rightarrow PT = 20 \times 0.686 \\\Rightarrow PT = 13.72\ m$

Now, adding PB to TP will give us the height of tree, TB

Now, height of tree TB = TP + PB

TB = 13.72 + 1.5 = 15.22 $\approx$ 15 m

7 0

3 years ago