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nikitadnepr [17]
4 years ago
5

A high speed elevator can rise 480 feet in 30 seconds. which expression represents the rate, in feet per minute, of the elevator

?
Mathematics
1 answer:
AleksAgata [21]4 years ago
4 0

R = 960x ft/min

Explaination : 960 is the rate at which the elevator will rise in a minute, while the 'x' represents the amount of minutes passed. Finally the label in the end clarify the units of measure.


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Darpana solved the equation s = StartFraction a + b + c Over 3 EndFraction for a. Her steps are shown below: 1. Multiply by 3: s
Harman [31]

Answer:

Option (c) is correct.

Step-by-step explanation:

Given equation is :

s=\dfrac{a+b+c}{3}

The equation can be solved for a as follows :

Step 1.

Cross multiply the given equation

3s=a+b+c

Step 2.

Now subtract b on both sides

3s-b = a+b+c-b

3s-b = a+c

Step 3.

Subtract c on both sides

3s-b-c=a+c-c

⇒ a=3s-b-c

The statement that is true for Darpana is " In step 3, she needed to subtract c rather than divide".

5 0
3 years ago
Read 2 more answers
ILL MARK BRAINIEST IF YOU CAN DO THIS CORRECTLY!!!
skelet666 [1.2K]

Answer:

76/100

Step-by-step explanation:

19/25 * 4/4=76/100

8 0
3 years ago
What expression is equivalent to (2x-1)(x-3)?
trapecia [35]
Hey dude,

Here we go,

(2x - 1)(x - 3) \\  = 2 {x}^{2}  - 6x - x + 6 \\  = 2 {x}^{2}  - 7x + 6
7 0
4 years ago
T= 1,-1 u= 2, -4
Monica [59]

Answer: 3.16 units (Option C)

Step-by-step explanation:

The key to this problem is to use the distance formula, which is:

Distance = \sqrt{(x₁-x₂)²+(y₁-y₂)²}

The first point, T = (x₁,y₁), and the second point, U = (x₂,y₂).

Plugging the two points into the equation, we get:

Distance = \sqrt{(1-2)^{2}+(-1-(-4))^{2} }

The values within the parenthesis are subtracted:

Distance = \sqrt{(-1)^{2}+3^{2}  }

The values are then squared:

Distance = \sqrt{1+9}

Finally, they are added together:

Distance = \sqrt{10}

\sqrt{10} can be approximated as 3.16, so the distance between the two points is 3.16 units.

7 0
3 years ago
Violet saw a scarf online for $24. If she has an 18% discount coupon what would be the discount amount?
Alika [10]
The discount would be $4.32, and the total after the discount would be $19.68.
6 0
3 years ago
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