make h the subject of formula
[tex]a = \frac{1}{2} bh[/tex]​

Answer:

n=18 sides

Step-by-step explanation:

Given: Exterior angle =20°

Find: sides of a regular polygon

Solution: θ=(360°)/side , θ=20°

Let n= number of sides

θ=360°/n

20=360/n

n=360/20

n=18

Answer:

13/25

Step-by-step explanation:

number of black balls = 4

number of white balls = 6

⇒ total number of balls = 10

As the balls are always replaced after being picked:

Therefore,

P(W) and P(W) = 4/10 x 4/10 = 16/100 = 4/25

P(B) and P(B) =  6/10 x 6/10 = 36/100 = 9/25

P(W and W) or P(B and B) = 4/25 + 9/25 = 13/25

Answer:

Step-by-step explanation:

7(-4x - 1) = 49

-28x - 7 =49

-28x = 49 + 7 = 56

x = 56/(-28) = -2

Answer:

7 x - 4x = - 28x

7 x - 1 = - 7

-28x - 7 = 49

+7 both sides

-28x = 56

÷ - 28

x = 56/-28

x = - 2

I substitute to double check my answer:

- 4x

-4x-2 =8

7(8- 1)

7x 8 = 56

7 x - 1 = - 7

56-7= 49

Hope this helps!

Answer:

The answer is B -4

Step-by-step explanation:

Answer:

y=

Step-by-step explanation:

y = 3x - 1

y = 3(12) - 1

y = 36 - 1

y = 35

Answer:

Slope = -5/8

Step-by-step explanation:

Take 2 points from the graph where the line is. Point 1: (1 , 6). Point 2: (9 , 1).

We are going to use the formula for finding the slope of a line now.

y2 - y1/x2 - x1 = 1 - 6/9 - 1 = -5/8

Slope = -5/8

Answer:

15. 420 hours

16. not sure sorry

Step-by-step explanation:

15. there are 168 hours in a week, so 168 * 2 1/2 is 420

16. your gonna have to find the answer from someone else sorry

Answer:

1/2

Step-by-step explanation:

Yes, I agree.

Make a graph [tex]y=-\frac{4}{5}x+\frac{2}{5}[/tex]

The point of intersection of the line with x-axis is the solution of [tex]-\frac{4}{5}x+\frac{2}{5}=0[/tex]

Multiply by 5 on both sides, get -4x + 2 = 0, x = 2/4 = 1/2

The solution is 1/2.

Answer:

778688

Step-by-step explanation:

because you do 92 times 92 times 92!

please mark brainliest i need 2 more

Answer:

-4, -10, -2

Step-by-step explanation:

[tex]y-6\leq 15+8y\\-21\leq 7y\\y\geq -3\\[/tex]

so the answer is -4, -10, -2

Answer:

99.9% sure it's -4, -10, -2

Step-by-step explanation:

y−6≤15+8y

−21≤7y

y≥−3

so that be providing that you're gonna get

-4, -10, -2

Answer:

  $56.02

Step-by-step explanation:

The account balance after 10 years is given by the future value formula:

  FV = P(1 +r)^t . . . . . principal P invested at rate r compounded annually for t years

  FV = $200(1 +0.025)^10 ≈ $256.02

The amount in excess of the original investment is the interest earned:

  $256.02 -200.00 = $56.02 . . . . interest earned in 10 years

Answer:

$256.02

Step-by-step explanation:

Here is the formula: 200(1.025)^10.

The .025 is the percentage of the interest, and the 1 is the money you already have (which is 200). The ^10 is the 10 years.

If you take the (1.025)^10, you'll get an incredibly large number, 1.2800....

Take that large number and multiply it by the amount of money you originally have, $200. Then you'll get something like 256.0169... Round to the near hundredth, and you'll have 256.02

Answer:

behold... the answer is..... 110! :)

Answer:

5/2

Step-by-step explanation:

I used coordinate (-4, -2) and (-2, 3)

Slope=change in y/change in x

-2-3=-5

-4-(-2)=-2

-5/-2=5/2

Answer:

[tex]\frac{-5}{-2}[/tex] or 2.5

Step-by-step explanation:

(-2,3) and (-4,-2)

[tex]\frac{-2-3}{-4-(-2)}[/tex] ==> [tex]\frac{-5}{-2}[/tex] ==> 2.5

Hope that helps!

Answer:

1 mole of Oxygen and two moles of Hydrogen

Step-by-step explanation:

The mass of oxygen equal to one mole of oxygen is 15.998 grams and the mass of one mole of hydrogen is 1.008 g.

Answer: 80

Step-by-step explanation:

Angle FGB = 80 degrees b/c supplementary angles.

By the sum of interior angles of a quadrilateral, angle FEB = 360 - 75 - 95 - 90 = 100 degrees.

x is supplementary with this angle and is this 180 - 100 = 80.

Answer:

See below.

Step-by-step explanation:

The answer is 0.02146500052, or 0.02.

-hope it helps

(Thanks.)

Answer:

$3

Step-by-step explanation:

Let the cost of an eraser, a pen and a ruler be $e, $p, and $r respectively.

Given:

e +2p +r= 13 -----(1)

2e +p +r= 11 -----(2)

3e= 2r -----(3)

(1) ×3:

3e +6p +3r= 39 ----(4)

Substitute (3) into (4):

2r +6p +3r= 39

6p +5r= 39 -----(5)

(2) ×3:

6e +3p +3r= 33 -----(6)

Substitute (3) into (6):

2(2r) +3p +3r= 33

4r +3p +3r= 33

3p +7r= 33 -----(7)

Let's rewrite equations (5) &(7) so it's easier to compare them:

6p +5r= 39 -----(5)

3p +7r= 33 -----(7)

We can eliminate the term p to find the value of r. This can be done by making sure that the coefficient of p is equal in both equations.

(7) ×2:

6p +14r= 66 -----(8)

(8) -(6):

6p +14r -(6p +5r)= 66 -39

Expand:

6p +14r -6p -5r= 27

9r= 27

r= 27 ÷9

r= 3

Thus, the cost of a ruler is $3.

Answer:

Hello how are you

n equals -14

Answer:

52

Step-by-step explanation:

This is because the formula is dr

Answer:

920cm^2

Step-by-step explanation:

look at the attachment below hope it helps pls mark brainliest :)

Answer:

A

Step-by-step explanation:

[tex]\left[\begin{array}{ccc}\frac{7}{19} &\frac{3}{19}\\\frac{10}{19} &\frac{7}{19} \end{array}\right][/tex]

Answer:

The graph is not visible!

You could have positive or negative correlation.

Hope this helps!

Answer:

The factors of a number are all of the numbers that will divide into that number with no remainder. The prime factors of a number are the prime numbers that must be multiplied together to give the number. For example: The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The prime factors of 30 are 2, 3, and 5.

Answer:

i would say the answer is true but I'm not completely sure this is the answer.

Answer:

TRUE

Step-by-step explanation:

Answer:

Step-by-step explanation:

If Δ JKL ~ Δ JHG , then

[tex]\frac{LJ}{GJ}[/tex] = [tex]\frac{KJ}{HJ}[/tex]

[tex]\frac{95}{68}[/tex] ≠ [tex]\frac{87}{72}[/tex] ⇒ triangles are not similar

Answer:

Step-by-step explanation:

It is given

2x−3y=5

we can write it as

3y=2x−5

So we get

y=32x−5​

Substituting x=4 in the given equation

y=32(4)−5​

So we get

Y=38−5​

y=33​

By division we get

y=1

Substituting x=−2 in the given equation

y=32(−2)−5​

So we get

y=3−4−5​

y=3−9​

By division we get

y=−3

x 4       -2

y      1        -3

Now draw a graph using the points (4,1) and (−2,3)

Join the point through a line and find the value of y

(i) Based on the graph

consider x=4 on X-axis

Now the line joining the two points and a point on the Y-axis gives the value of y

Therefore,when x=4 the value of y=1

(ii) Based on the graph,

Consider y=3 on Y-axis

Now the line joining the two points and a point on the X-axis the value of x

Therefore, when y=3 the value of x=7

Answer:

write the question properly-_-

Answer:

The answer is A&C

Step-by-step explana

Answer:

32 cars

Step-by-step explanation:

If each class has 26 students, we can multiply the number of classes, 6, by the amount of students in each class, to find the total amount of students going on the field trip.

6 * 26 = 156 students

Each vehicle can hold 5 students. To find the amount of vehicles needed to transport all the children, we need to divide the number of students by 5.

156 / 5 = 31.2 vehicles

I don't think they plan on driving 0.2 of a vehicle, so we would have to round. We can't round down because if we did, there would be one student left.

31 * 5 = 155 students

Unless the student plans on biking there, they would have to have 32 cars ready to drive the students to the field trip.

Answer:

Table price  is Rs 2544

Step-by-step explanation:

Table sold =  Rs 2400

Losses = 6%

Now find  6% of 2400

     ( 2400 × 6 ) ÷ 100 =  144

Add this answer to table price sold

     2400+ 144 = 2544

Mark brainliest if you understand