There are 15 juniors and 10 seniors in a class. What is the probability that if two students are selected at random that they are both seniors?

Answer: 20

i just got it from the calculator

Answer:

slope: 1/2

y- intercept:(0,-5)

standard form: x - 2y = 10

Step-by-step explanation:

Answer:

they are related because they are across the x axis

Answer:

For the first question: y = x^2

For the second question: y = x^2 - 2x + 1

For the third question: y = x^2 + 2x + 1

For the fourth question: y = x

For the fifth question: y = -x

Hope this helps:) Have a great day!

Answer:

I am pretty sure it is B

Step-by-step explanation:

1169 sq.rt.=34.190642

34.190642 times 4 =136.7

round to 137

Answer:

False

Step-by-step explanation:

SO SO SO SO SO SO SO sry if this is wrong!!!! i'm 99.9 persecnt sure its right!!!!  :):)::)

Answer:

ok I will help you with it

Answer:

68.8

Step-by-step explanation:

delta math

Answer:

68.8

Step-by-step explanation:

Solution Method 1:

‾

Solution Method 1:

​

Use altered formula

�

2

=

�

2

+

�

2

−

2

�

�

cos

⁡

�

a

2

=b

2

+c

2

−2bccosA

From reference sheet.

Solve for

cos

⁡

�

:

Solve for cosA:

cos

⁡

�

=

�

2

+

�

2

−

�

2

2

�

�

cosA=

2bc

b

2

+c

2

−a

2

​

Since we are finding

∠

�

,

Since we are finding ∠F,

plug in

3.1

for side

�

:

plug in 3.1 for side a:

Opposit the angle we want

cos

⁡

�

=

2

2

+

3.

2

2

−

3.

1

2

2

(

2

)

(

3.2

)

cosF=

2(2)(3.2)

2

2

+3.2

2

−3.1

2

​

Plug in

cos

⁡

�

=

4.63

12.8

cosF=

12.8

4.63

​

Evaluate numerator and denominator

cos

⁡

�

=

0.3617188

cosF=0.3617188

Divide (no rounding yet)

�

=

cos

⁡

−

1

(

0.3617188

)

≈

68.7942

≈

68.

8

∘

F=cos

−1

(0.3617188)≈68.7942≈68.8

∘

Solution Method 2:

‾

Solution Method 2:

​

Use original formula

�

2

=

�

2

+

�

2

−

2

�

�

cos

⁡

�

a

2

=b

2

+c

2

−2bccosA

From reference sheet.

Since we are finding

∠

�

,

Since we are finding ∠F,

plug in

3.1

for side

�

:

plug in 3.1 for side a:

Opposit the angle we want

3.

1

2

=

2

2

+

3.

2

2

−

2

(

2

)

(

3.2

)

cos

⁡

�

3.1

2

=2

2

+3.2

2

−2(2)(3.2)cosF

Plug in values. Side "a" is opposite the wanted angle.

9.61

=

4

+

10.24

−

12.8

cos

⁡

�

9.61=4+10.24−12.8cosF

Square sides.

9.61

=

9.61=

−

14.24

−

12.8

cos

⁡

�

−14.24−12.8cosF

Add.

−

14.24

=

−14.24=

−

14.24

−14.24

−

4.63

=

−4.63=

−

12.8

cos

⁡

�

−12.8cosF

−

4.63

−

12.8

=

cos

⁡

�

−12.8

−4.63

​

=cosF

Divide to solve for cos(A).

�

=

cos

⁡

−

1

(

−

4.63

−

12.8

)

≈

68.794

≈

68.

8

∘

F=cos

−1

(

−12.8

−4.63

​

)≈68.794≈68.8

∘

Use inverse cosine to find the angle then round.

Answer:

hdhdheeheiwhwvehdhevevwhw

25

Answer: [tex]2d^2-2d[/tex]

Step-by-step explanation:

Given

[tex]\Rightarrow (d^2-d+5)-(-d^2+d+5)\\\Rightarrow (d^2+d^2)-d-d+5-5=0-2d+0\\\Rightarrow 2d^2-2d=2d(d-1)[/tex]

Answer:

i think .... 88 pencils

Step-by-step explanation:

$1.25 = 5 pencils

1 pencil = $1.25/5 = $0.25/pencil

pencils you could buy for $22 :

$22/$0.25 = 88 pencils

hope it helps <3

Answer:

Step-by-step explanation:

So for this one you need to find how much text messeages you make in a day and subtract it from 19.

The second one confused me though.

Answer:

75 feet²

Step-by-step explanation:

A scale drawing is the reduced image of another image

If the scale is 1 inch to 5 feet, it means that 1 inch presents 5 feet

If the area of the blueprint = 15 inches

It means the actual chicken coop would be 5 feet times larger than the blueprint

Actual area of the chicken coop = 15 inches² x 5 = 75 feet²

Answer: 63360 inches per hour.

Step-by-step explanation:

Answer:

I said 24. I hope this helps and works

Answer:

A . 496 ft²

Step-by-step explanation:

Area = ½ × base × height

= ½ × 62 × 16

=496 ft²

Answer:

13^2 = 12^2 + X^2

Step-by-step explanation:

The side with the 13^2 is the longest side so we need add the shortest side  X^2 and the second longest side 12^2

Answer:

(-4, -3)

Step-by-step explanation:

Please mark as brainliest !! :D

Answer:

4.5m/s^2

Step-by-step explanation:

Given data

Mass= 200kg

Force= 895N

Required

the acceleration a

We know that

F=ma

a= F/m

substitute

a= 895/200

a= 4.5 m/s^2

Hence the accelaration is 4.5m/s^2

Answer:

Explanation:

2.25 is a decimal and 225/100 or 225% is the percentage for 9/4.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hope I helped!!!

GL :)

Answer:

B

Step-by-step explanation:

My teacher just told me

Answer:

$199

Step-by-step explanation:

I = Prt

I = (1990)(0.05)(2)

I = 199

Answer:

Its 1/81

Step-by-step explanation:

I am not sure why it is not in your choices but I think that's the answer!

9514 1404 393

Explanation:

A linear system of two equations in two variables will be a dependent system. This means both equations reduce to the same equation. The equations will be different only until they are reduced to the same form.

Here is one possible set of equations. The first is in slope-intercept form. The second is in point-slope form.

If we subtract the first equation from the second, we get ...

  (y -7) -(y) = (3(x -2)) -(3x +1)

  -7 = 3x -6 -3x -1 . . . . . eliminates y

  -7 = -7 . . . . . . . . . true for all values of x

There are an infinite number of solutions.

Answer:

x = 17

Step-by-step explanation:

3x = 51

x = 51 ÷ 3

x = 17

Answer:

x=17

Step-by-step explanation:

51 needs to be divided by 3 in order to get the variable by itself. 51/3=17

Answer:

D

Step-by-step explanation:

i hope this will help you a little bit

Answer:

V=343in³

Step-by-step explanation:

A=6a2

V=a

3V=6A3/2

36=6·2943/2

36=343in³