pls help
pls
pls
it's very hard​

Answer:

C

Step-by-step explanation:

Because xyx-x=483=s739

x,y=rx,ry

Answer:

I think 2 but sorry if I'm wrong

Step-by-step explanation:

Answer:

0.71 m²

Step-by-step explanation:

base = b = 0.75 m

altitude= h = 1.9 m

   [tex]\boxed{\text{\bf Area of triangle = $\dfrac{1}{2}b*h$}}[/tex]

                                   [tex]\sf = \dfrac{1}{2}*0.75*1.9\\\\ =0.7125\\\\ = 0.71 \ m^2[/tex]

The association as shown by the scatter plot is strong and negative,

A scatter plot is a system of presenting data on the two axes of a cartesian plane.

In this case, we can see that the number of cellphone users decreases as population decreases hence the association is strong and negative.

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Answer:

Strong, positive, the same

Step-by-step explanation:

The association between the population and the number of cellular phone users is strong and positive. If you were to add the following data to the scatter plot, the association would be the same.

The number of more friends that Bobby need to call to help finish cleaning in time is 20 friends.

Let x represent number of more friends

Number of hours=8×(9+1)

Number of hours=8×10

Number of hours=80 hours

Hence:

10×2+2(10+x)=80

20+20+2x=80

Collect like terms

2x=80-40

2x=40

Divide both side by 2x

x=40/2

x=20 friends

Therefore the number of more friends that Bobby need to call to help finish cleaning in time is 20 friends.

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Answer:

22.5 feet

Step-by-step explanation:

volume of a retangular shape: l*w*h

4.5*2.5*2=22.5

Answer:

The expression is not factorable with rational numbers.

Except if you made a typo in your equation and it's x^2-4x-12

calculation:

-6x2=12

-6+2=-4

Then the answer will be (x+2)(x-6)

Answer:

the darkest shaded one.

Step-by-step explanation:

because the two areas for possible answers both intersect at that area, therefore, that is the answer.

Answer:

Step-by-step explanation:

The circumference of the circle based on the equilateral triangle is 63mm.

The side of the triangle is 20mm. The radius will be:

= 20/2 = 10

The circumference of the circle will be:

= 2πr

= 2 × 3.14 × 10

= 63

In conclusion, the circumference is 63mm.

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Answer:

a cone with a circumference of about 63 mm

Step-by-step explanation:

By imagining the triangle rotating around the line in the middle, we can see that the triangle will create a cone, not a cylinder.

If one side of the triangle measures 20 mm, then the radius at the base of our cone will be 10 mm. (20 mm is the diameter and the radius is half of that.)

Use 2πr to solve for the circumference and it comes out to 63.

Thus, the rotated triangle will created a cone with a base circumference of about 63 mm.

Answer:

x(x-2)=168

x=14

Step-by-step explanation:

Let the length of the rectangle be x.

width=(x-2)

x(x-2)=168

x^2-2x=168

x=14, x=-12 (rejected)

Answer:

(0,1) (1,-1)

Second graph on top row is your answer.

Step-by-step explanation:

Answer:

No, it is not

Step-by-step explanation:

If you substitute 4 for x, the answer is 14. 14 does not equal 10. Therefore, it is not a solution.

Answer:

A = 1/2 width × height

width = n + 3 cm

height = width - 9 cm

height = n + 3cm - 9cm

height = n - 6cm

A = 1/2 width × height

= 1/2 (n + 3cm) × (n - 6cm)

45cm^2 ×2 = n^2 - 3ncm - 18cm^2

n^2 - 3ncm - 18cm^2 - 90cm^2 = 0

n^2 - 3ncm - 108cm^2 = 0

Find two numbers that their sum is -3 and their product is 108. Therefore, the numbers could be -12 and 9

n^2 - 3ncm - 108cm^2 = 0

n^2 - 12ncm + 9ncm - 108cm^2 = 0

n(n - 12cm) + 9cm(n - 12cm) = 0

(n - 12cm) (n + 9cm) = 0

Either (n - 12cm) = 0 or (n + 9cm) = 0

n = 12cm or n = -9cm

but n = -9cm is invalid because there is no negative distance.

n = 12cm is the answer

Step-by-step explanation:

=7¹⁵x 15-7¹⁴x 95/7¹⁶+7¹⁵x3

=1425×7²⁹/7¹⁶+7¹⁵×3

Answer:

James invested $160,000

Step-by-step explanation:

- In total, they needed $480,000 to start the business

- 1:2 ratio means one of them payed double the amount than the other

so the expression would be,

2x + x = 480,000

Let x represent how much they each need to invest

the expression can be simplified to,

3x = 480,000

now you need to get x alone, this would be done be dividing both sides by 3

[tex]\frac{3x}{3} = \frac{480,000}{3}\\x = 160,000[/tex]

James invest $160,000

Michael invest $160,000 x 2 = $320,000

and if you add them together, you get the total amount

$320,000 + $160,000 = $480,000

Let me know if you have any questions !

The area of the given trapezoid ABCD in the image shown is calculated as: 54 units²

Area of a trapezoid = 1/2(a + b)h.

Given the following:

Area of triangle ACD = 1/2(AD)(CK) = 30 units²

1/2(10)(CK) = 30 units²

5(CK) = 30

CK = 6 units (altitude of trapezoid ABCD)

Area of the trapezoid = 1/2(a + b)h = 1/2(10 + 8)6

Area of the trapezoid = 54 units²

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The volume of the given shape will be equal to V=2827.42 cubic inches.

The volume is defined as the space occupied by the object in the three-dimensional plane. It requires three coordinates to find the volume of any object.

Here it is given in the question that:-

Radius of the semicircle=12 inches

Height of the cylinder =13 inches.

Now the volume will be calculated as:-

Total volume of the figure will be the sum of the Volume of the semicircle and the Volume of the cylinder.

= 2πr³+πr²l

= 2xπx(6)³+πx(6)²x13

=1357.16+1470.26

=2827.42  Cubic inches                      

Hence the volume of the given shape will be equal to V=2827.42 cubic inches.

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Answer:

for every minute she walked 200 steps so 200= 1

X+9/X+4

Step-by-step explanation:

(x ^ 2 + 5x - 36)/(x ^ 2 - 16)

=(X+4)(X+9)/(X+4)(X-4)

=(X+9)/(X+4)

Answer: Systematic sampling is a type of probability sampling method where sample members from a larger population are selected based on a random starting point but with a fixed, periodic gap.

Step-by-step explanation:

Answer:

the surface area would be 353 in for the pyramid

Step-by-step explanation:

Answer:

The answer is: 4(8a+7) I think...

Have a nice day

Answer:

yes every person has an equal chance of being selected

Step-by-step explanation:

Ans: 2/3

Step-by-step explanation:

Formula : [tex]m = \frac{y2 - y1}{x2- x1}[/tex]  (Then replace the number in )

= 3- (-1) / 4 - (-2) = 4 / 6 = 2 / 3

Step-by-step explanation:

the slope is always the ratio "y coordinate change / x coordinate change" when going from one point on the line to another.

so, when going from (-2, -1) to (4, 3)

x changes by +6 (from -2 to 4).

y changes by +4 (from -1 to 3).

therefore, the slope is

+4/+6 = 4/6 = 2/3

Answer:

4560

Step-by-step explanation:

There are 3 zeros in 1000. If you are multiplying, move the decimal place over however many places to the right that there are zeros. For example,

4.56 x 1000

45.6 x 100

456 x 10

4560 x 1

We moved the decimal place to the right one every time we removed a zero.

This method is extremely useful for multiplying by 1, 10, 100, etc.

Hope this helps!

(This method is an easy yet complicated way to multiply by)

[tex]\rule{300}{1}\\\dashrightarrow\large\textsf{\textbf{\underline{Given question:-}}}[/tex]

l=12 cm; b=6 cm. What is the area?

[tex]\dashrightarrow\large\blue\textsf{\textbf{\underline{Answer and how to solve:-}}}[/tex]

[tex]\sf{Formula\:for\:Area:-}[/tex]

[tex]\rule{300}{1}[/tex]

Answer:

the answer to this question is 5½

Answer:

Volume of cylinder is 6285.71 square units.

Step-by-step explanation:

Given the radius of cylinder 10 units. The height is twice its radius. we have to find its volume.

r=10 units

⇒ Diameter, d = 20 units

Also given height is twice its radius.

⇒ Height=2(r)=2(10)=20 units

= 22/7 × 100×20

=22/7 × 2000

= 44000/7

= 6285.71square units.

hence, volume of cylinder is 6285.71 square units.

Answer:

use a volume calculator

Step-by-step explanation: