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Varvara68 [4.7K]

3 years ago

9

The rectangular floor of a classroom is 28 feet in length and 32 feet in width. A scale drawing of the floor has a length of 7 i

nches. What is the area, in square inches, of the floor in the scale drawing?

1 answer:

earnstyle [38]3 years ago

8 0

I believe it is 56 square inches

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Can somebody please help me and quick? thxs

zmey [24]

The answer is 15%

Explanation:

Team A has 42 members and team b has 18 more than team A so team b has 60 members. In order for the teams to be equal, there’d need to be 51 people on each team(60+42/2=51). There are 9 extra people on team b, so we need 9/60 , divide and you get 15%.

6 0

3 years ago

If an item that originally cost $13 is increased to $19, what is the percentage of increase in the item?

Evgesh-ka [11]

Original cost (OC) = $13

New cost (NC) = $19

Percentage increase = $\frac{NC - OC}{OC} *100 = \frac{19 - 13}{13} * 100 = \frac{6}{13} * 100$

= 46.15 %

4 0

3 years ago

In the calm waters of an inlet, Manon's boat moves with a velocity (speed and direction) vector \vec{b_1} = (3,4) b 1 =(3,4)

andrew-mc [135]

Answer with Step-by-step explanation:

We are given that

$b_1=(3,4)$

$b_2=(1,1)$

We have to find the speed of river's current and the direction of current flowing.

$b=b_2-b_1=(1,1)-(3,4)=(-2,-3)$

Speed of river's current= $\mid b\mid$

Speed of river's current= $\sqrt{(-2)^2+(-3)^2}$

Speed of river's current= $\sqrt{13} m/s$

By using the formula

$\mid r\mid =\sqrt{x^2+y^2}$

Direction of current flowing, $\theta=tan^{-1}(\frac{y}{x})$

$\theta=tan^{-1}(\frac{-3}{-2})=56.3^{\circ}$

The angle lies in third quadrant therefore

$\theta=180+56.3=236.3^{\circ}$

3 0

3 years ago

H E L P!!! Simplify the expression -4d+3-8+6+d-1

ser-zykov [4K]

-4d+3-8+6+d-1 =

-3d + 0 =

-3d

6 0

3 years ago

Can anyone do these? Thanks.

user100 [1]

1. -1, 2,8,11

plug the values into the equation and solve

7 0

3 years ago