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3 years ago

the slope of a ramp from the sidewalk to the street has to be 1/20. the height of a ramp is 2.5 inches.what is the horizontal le

ngth of the ramp

Mathematics

1 answer:

Gnesinka [82]3 years ago

6 0

$\bf slope = {{ m}}= \cfrac{rise}{run}\implies \cfrac{1}{20}
\\\\\\
\cfrac{\stackrel{height}{2.5}}{\stackrel{length}{x}}=\cfrac{\stackrel{rise}{1}}{\stackrel{run}{20}}\implies \cfrac{2.5\cdot 20}{1}=x$

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Igoryamba

We have that the probability of Janice rolling a 2 or 5 on her 7th toss of the dice is

$\frac{1}{3}^7.$

From the question we are told that

Janice rolled either a 2 or a 5 on the last 6 rolls of the die

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$P(2/ 5)=1/6+1/6\\\\P(2/ 5)=2/6\\\\P(2/ 5)=1/3.$

Where

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2 years ago

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2 years ago

A hovercraft takes off from a platform. It’s height (in meters), x seconds is modeled by h(x)=-(x-11)(x+3). What is the height o

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Answer:

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2 years ago

Somebody help me lol

vladimir2022 [97]

Answer: $1.03*10^{-1}>3.1*10^{-2}>2.01*10^{-3}>2.32*10^{-4}>4.2*10^{-5}$

Step-by-step explanation:

1. A number written in scientific notation has the following form:

$a10^{b}$

Where is $a$ is a number between 1 and 10 but not including 10, and b is an integer.

2. The negative exponent indicates the number of places the decimal point must be moved to the left to obtain the number as a decimal number.

3. Keeping this on mind, you can know that: if the exponent of a number written in scientific notation indicates that the decimal point must be moved 5 places to the left and another number written in scientific notation indicates that the decimal point must be moved 2 places to the left, then the first number is smaller than the second one.

4. Therefore, you can arrange the numbers given in the problem as following:

$1.03*10^{-1}>3.1*10^{-2}>2.01*10^{-3}>2.32*10^{-4}>4.2*10^{-5}$

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2 years ago

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goblinko [34]

The answer is (-7.5, -7.5)

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2 years ago