Mr. Weaver has 36 history students. The ratio of girls to boys is 2:1. How many girls does he have in his class?​

Answer:

17.8

Step-by-step explanation:

Using the SOH CAH TOA identity

Opposite = 16

Hypotenuse = QR = x

Angle of elevation = 64 degrees

Sin64 = opp/hyp

Sin 64 = 16/x

x = 16/sin64

x = 16/0.8898

x = 17.8

Hence QR is 17.8 to the  nearest tenth of a foot

Answer:

44 cm³

Step-by-step explanation:

If you break up this shape into 2 pieces you get a rectangle with the measurements of 2, 2, and 5 and another rectangle with the measurements of 2, 2, and 6. You then multiply 2, 2, and 5 together which will get you 20, and multiply 2, 2, and 6 together which will get you 24. You will then add both products which will get you 44. Since the measurement is in centimeters and it is a 3 dimensional shape it will then become 44 cm³.

Answer:

i hope you understand this answer

[tex]3x : 8 = 9 : 2[/tex]

[tex] \frac{3x}{8} = \frac{9}{2} [/tex]

[tex]3x × 2 = 8 × 9[/tex]

[tex]3x = \frac{8 \times 9}{2} [/tex]

[tex]3x = 4 \times 9[/tex]

[tex]x = \frac{4 \times 9}{3} [/tex]

[tex]x = 4 \times 3[/tex]

[tex]x = 12[/tex]

Answer:

[tex]x=5[/tex]

Step-by-step explanation:

VERY EASY

Answer: 7680

Step-by-step explanation:

Answer:

7,680

Step-by-step explanation:

Okay, so we use PEMDAS right, so we start with the parenthesis:

6 + 20 = 26

300 x 26 = 7,800

7,800 - 120 = 7,680

So 300(6+20)-120=7,680

hope this helps:)

Answer:

H

Step-by-step explanation:

Answer:

I'm going to say true because that's the most logical answer

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

You need to times 35.5 by 10.75 which will get you 381.62 which rounds to 381.63

Answer:

A number that can be made by dividing two integers (an integer is a number with no fractional part). The word comes from "ratio". But π (pi) is not a rational number, it is an "Irrational Number".

Step-by-step explanation:

mark me please

Answer:

Since rational numbers are all numbers that can be written as a fraction, and includes positive numbers, negative numbers and the 0. We can conclude that since -3.4 can be written as a fraction it is a rational number.

Answer:

18.9

Step-by-step explanation:

perimeter of a trapezoid is base + base + side + side (p = a + b + c + d)

adding up each of the sides gives you 18.9

Answer:

57

Step-by-step explanation:

1+2=180

123+2=180

2=180-123

2=57

2=6=57 ( because 2 and 6 are 2 isotopic angles)

Answer:

I'm pretty sure the answer is C

Answer:

27

Step-by-step explanation:

Given the expression

[tex]\left(3^{-6}\times 3^{3}\right)^{-1}\\[/tex]

According to law of indices, this can be written as;

[tex]\left(3^{-6+3})^{-1}\\\\= (3^{-3})^{-1}\\\\= 3^{-3*-1}\\\\= 3^3\\\\= 27[/tex]

Hence the required answer is 27

Answer:

(4, 3 ) and (1.5, 8 )

Step-by-step explanation:

Given the 2 equations

2x + y = 11 → (1)

xy = 12 → (2)

Rearrange (1) expressing y in terms of x by subtracting 2x from both sides.

y = 11 - 2x → (3)

Substitute y = 11 - 2x into (2

x(11 - 2x) = 12 , that is

11x - 2x² = 12 ( subtract 12 from both sides )

11x - 2x² - 12 = 0

2x² - 11x + 12 = 0 ← in standard form

(x - 4)(2x - 3) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 4 = 0 ⇒ x = 4

2x - 3 = 0 ⇒ 2x = 3 ⇒ x = 1.5

Substitute these values into (3) for corresponding values of y

x = 4 : y = 11 - 2(4) = 11 - 8 = 3 ⇒ (4, 3 )

x = 1.5 : y = 11 - 2(1.5) = 11 - 3 = 8 ⇒ (1.5, 8 )

Answer:

452.16 in^2

Step-by-step explanation:

multiply 12 times 12

then multiply that number by Pi(3.14)

Answer:

He needs 5 boxes.

Step-by-step explanation:

224 divided by 46 is 4.86956521739, however he needs all of them, so he needs to put the extra in another box.

Answer:

the value of this increase in percentage indices is 27.77%

Step-by-step explanation:

The computation of the  value of this increase in percentage indices is shown below:

Given that

The population has increase from 82,350 to 105,200

So, the increase in percentage would be

= (105,200 - 82,350) ÷ (82,350)

= 22,850 ÷ 82,350

= 27.77%

Hence, the value of this increase in percentage indices is 27.77%

Answer:

b, d, and e are the three statements that make the most sense to be true.

Step-by-step explanation:

tell me if this is wrong.

Answer:

47°

Step-by-step explanation:

Line LN equal 180°. Since MON equals 133°, subtract 180-133 to get 47°

Answer:

the answer is -2,-2

Step-by-step explanation:

Answer:

Area = 559.17 sq ft

Step-by-step explanation:

Area (rectangle) = 18 x 24 = 432

Area (semi-circle = πr²÷2 = 81π/2 = 127.17

Answer:

The equation is:

f(x) = Ix + 3I - 2

Step-by-step explanation:

For a function like:

f(x) = Ix - kI + c

k is the x-value where the vertex is, and c is the y-value where the vertex is.

In the graph we can see that the vertex is in the point (-3, -2)

then:

x-value = -3 = k

y-value = -2 = c

Replacing those in the equation for the function:

f(x) = Ix - (-3)I - 2

f(x) = Ix + 3I - 2

Answer:

Canada

Step-by-step explanation:

Multiply $1.50 by the amount of liters in a gallon 3.78541 and it is less than 6.20

Answer:

peter pays more money

Step-by-step explanatipeter is more

because 4 liters is a bit over a gallon and each liter is 1.50 so 1.50 x 4 is 6 dollars so peter pays more money

Answer:

Answer is

(100*-m)+(45*n)

Step-by-step explanation: because stock  decreases per sock so you're going to multiply 100 times -m because it is decreasing so it will be negative

Then it will be 45*n because it increases per number of stocks so you multiply 45 which is the number of stocks times n

Step-by-step explanation: