Umi's test grades for this semester are in the list shown. The mean of her test grades is 82.4. 86,93,90,85,42,91,90

Answer:

the answer is A 8.28

Step-by-step explanation:

you need to subtract 298.59 from 306.87 and you will get 8.28 hope this helps have a good day

Answer:

Your Answer is 21.3 feet B

Answer:

you would have to add them together

Step-by-step explanation:

you add 9pi cm^2 to 1/4

hop this helps kid

Answer:

The radius is 199.85 cm^3

Answer:

rational: √(42)/√(168), √(64)/32, (5√(3)-√(3))/(2√(3))

irrational: 2√(5)-3√(6), √(5)(4√(5-3√5))), √(7)π-√(14)π

Step-by-step explanation:

You can use calculater to find them.

If it can form fraction, then it is rational.

Step-by-step explanation:

5/8 × 6/8= 30/8 => this is the wrong one

it should be 5/8 × 6/8= 30/64.

9/10×3/10= 27/100 => this is the true one

Ar of llgm = b×h

Answer:

1/36

Step-by-step explanation:

There's only 1 way to get the sum of 2.

1,1

Answer:

B

Step-by-step explanation:

The SA of a cone is A=pi*r^2+pi*r*s

So instead of pi*5^2, it should be pi*3*5 (5 is the length of the slant).

Answer:

E’(-5,1)

Step-by-step explanation:

Left = x-3 = -2-3 = -5

up = y+4 = -3 + 4 = 1

Answer:

4x^2 B

-4x^2 A

1/4x^2 D

-1/4x^2 C

Step-by-step explanation:

1. Look at the concavity

    up or down = negative or positive.

2. number before the x value

if N < 1, it will be wider.     if N > 1, it will be thinner.

3. the two most right graphs would be -1/4x^2 and 1/4x^2

the one that is concave down is the - and the concave up is +

Answer:

The answer final

x1= -5; x2=9

Step-by-step explanation:

If you want me to expand on the equation leave me a comment :)

Answer:

A. 16 to 20 is equivalent to ratio 32:40

Answer:

(-8, 3)

Step-by-step explanation:

Answer: ( -8,3)

Step-by-step explanation:

It's not rocket science.

An ordered pair is a composition of the x coordinate (abscissa) and the y-coordinate (ordinate).

To find the ordered pair you need to be able to identify the y and x axis.

y axis is vertical

x  axis is horizontal

You want to start on the x axis and find where you think the dot is stopping at...which is -8 in the problem... once you do that move on up to the dot and move your finger to the left to see where that dot is leading you to, which is 3.

And there you have it. I hope this helps. I tried my best to explain.

Answer:

She has 27 necklaces and 54 earrings.

Hope it helps!

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

The total surface area of a cone with radius r and slant height s is ...

  A = πr² +πrs = πr(r +s)

For the given dimensions and π≈3, the area is approximately ...

  3(2 cm)(2 cm +8 cm) = 60 cm²

For π≈3.14, the area is approximately ...

  (20cm²)(3.14) = 62.8 cm²

Answer:

C) Trapezoid

Step-by-step explanation:

Given

[tex]A = (0,0)[/tex]

[tex]B = (4,8)[/tex]

[tex]C = (12,8)[/tex]

[tex]D=(16,0)[/tex]

Required

The possible shape

The above are 4 vertices.

Hence, the shape cannot be

(a) Triangle ---- it has 3 vertices

(b) Pentagon ---- it has 5 vertices

Calculate distance AB using distance formula

[tex]AB = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2[/tex]

Where:

[tex]A = (0,0)[/tex]

[tex]B = (4,8)[/tex]

[tex]AB = \sqrt{(0 - 4)^2 + (0 - 8)^2[/tex]

[tex]AB = \sqrt{( - 4)^2 + ( - 8)^2[/tex]

[tex]AB = \sqrt{16+64[/tex]

[tex]AB = \sqrt{80[/tex]

[tex]AB = 8.94[/tex]

Calculate distance BC using distance formula

[tex]BC = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2[/tex]

Where:

[tex]B = (4,8)[/tex]

[tex]C = (12,8)[/tex]

[tex]BC = \sqrt{(4 - 12)^2 + (8 - 8)^2[/tex]

[tex]BC = \sqrt{(-8)^2 + (0)^2[/tex]

[tex]BC = \sqrt{64 +0[/tex]

[tex]BC = \sqrt{64[/tex]

[tex]BC = 8[/tex]

Since

[tex]AB \ne BC[/tex]

Then, the polygon is not a square

The last available option is (c) trapezoid

Answer: C. Trapezoid

Step-by-step explanation:

Graph the points and you get a trapezoid!!!

Hope this helps!!!

Answer:

move the line up one

Step-by-step explanation:

[tex]V_1 = 2*10*6 = 120\\V_2 = 6*2*(8-2) = 6 * 2 * 6 = 72\\V = V_1 + V_2 = 120 + 72 = 192[/tex]

Answer: 192 cm³.

Answer:

Sophie sold 14

Kate sold 24

Step-by-step explanation:

Kate has sold 4 less than twice as many as Sophia.

2s - 4

---------------------

sold a total of 38 tickets

Sophie + Kate = 38

s + (2s - 4) = 38

Combine like terms

3s - 4 = 38

Add 4 to both sides

3s = 42

Divide both sides by 3

s = 14

2s - 4 = 2*14 - 4 = 24

Answer:

8400 in^3

Step-by-step explanation:

leg1 = √37^2 - 35^2 = √1369 - 1225 = √144 = 12 in

Base area = (12 x 35)/2 = 210 in^2

Volume = 210 x 40 = 8400 in^3

Answer:

8400

Step-by-step explanation:

I'd explain but you said answer fast...

Answer:

141 km

Step-by-step explanation:

Given data

Mean distance= 153km

Let Tina dirve=x km

Ben= x+ 24

Number of participants= 2

Hence,

Mean= total distance/number of participants

153= x+24+x/2

cross multiply

153*2= x+24+x

306 =2x+24

306-24= 2x

282=2x

Divide both sides by 2

x= 282/2

x= 141km

Hence Tina drove 141 km

Answer:

See explanation.

Step-by-step explanation:

[tex]5y-6py[/tex]

Common factor: y

[tex]y(5-6p)[/tex]

Answer:

Step-by-step explanation:

y=3x/4+50

where x is the tips and y is the earnings

Answer:

72

Step-by-step explanation:

3×(8×9/3=X1/3) then 8×9=X, then X=72

Answer:

Step-by-step explanation:

1. Given (it was given)

2. Opposite Interior Angles Theorem (states that the alternate interior angles created from two parallel lines and a transversal line are congruent)

3. Given (it was given)

4. Definition of midpoint (a midpoint splits a line in half, halves are congruent)

5. Vertical Angles Theorem (states vertical angles are congruent)

6. ASA (states that triangles with two pairs of congruent angles, and congruent sides that are between the angles are congruent)

Answer:

1/6561x³ or 6561x⁻³

Step-by-step explanation:

(3x)²/(9x)⁵

(3²)(x²)/(9⁵)(x⁵)

9x²/59049x⁵

9/59049x³

1/6561x³ or 6561x⁻³

Answer:

the remainder is -52

Step-by-step explanation:

3x²-x + 3

x+7÷ 3x² - x +3

the remainder is -52

Answer:

I think the second answer

Step-by-step explanation:

I'm late but it's the second answer!