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3 years ago

a wheelchair ramp is 9 feet long and sits 2.5 ft high. how long will a similar ramp be if it sits 1.5 ft high from the ground

Mathematics

1 answer:

bixtya [17]3 years ago

6 0

The second ramp should be 5.4 ft long

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Kamilah’s weight has tripled since her first birthday. If w represents the amount Kamilah weighed on her first birthday, write a

S_A_V [24]

Answer:

3*w

Step-by-step explanation:

Kamilah now weighs the triple of what she weighed on her first birthday. That means we need to multiply the first weight by 3. As the first weight is w, she now weighs 3*w.

Another possible expression is to sum 3 times w, that is w + w + w (it's equal to 3*w).

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3 years ago

Can anyone else not see answers rn???

Fofino [41]

Yeah i cant see them either

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3 years ago

11. The completion of a chemical reaction is expressed by the equation y = 300 - 4x - XP, where y is

alina1380 [7]

Answer:

The reaction ca occur at 10 degree Celsius or -14 degree Celsius.

Step-by-step explanation:

We are given the following in the question:

The completion of a chemical reaction is expressed by the equation

$y = 300 - 4x -x^2$

where y is the number of seconds needed to complete the reaction and x is the temperature in degrees Celsius at which the reaction occurs.

We have to find the temperature at which the reaction occurs, if the completion time of reaction is 160 seconds.

Putting y = 160

$160 = 300 - 4x -x^2\\x^2 + 4x - 140 = 0\\x^2 + 14x -10x -140 = 0\\x(x+14)-10(x+14)=0\\(x-10)(x+14) = 0\\(x-10) =0, (x+14) =0\\x = 10, x = -14$

Thus, the reaction ca occur at 10 degree Celsius or -14 degree Celsius.

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2 years ago

What are three different ways to write 15,638 with only hundreds, tens, and ones?

saul85 [17]

Fifteen thousand six-hundred and thirty-eight

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3 years ago

A car uses 30 gallons of gasoline for a trip of 800 miles. How many gallons would

antoniya [11.8K]

Answer:

26.25 gallons

Step-by-step explanation:

$\frac{30 gallons}{800 miles} = \frac{x}{700 miles}$

21000 = 800x

x = 26.25 gallons

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3 years ago