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Cloud [144]
3 years ago
10

A child's ladder is made of 333 sections. Each section is \dfrac{3}{4} 4 3 ​ start fraction, 3, divided by, 4, end fraction mete

rs long. How long is the ladder when all 333 sections are extended to make one ladder? meters
Mathematics
1 answer:
Sauron [17]3 years ago
4 0

Answer:

Ladder = 2\frac{1}{4}\ m

Step-by-step explanation:

Given

Sections = 3

Length = \frac{3}{4}m per section

Required

Determine the length of the ladder

The length of the ladder is calculated by multiplying the number of sections by the length of each section.

So, we have:

Ladder = 3 * \frac{3}{4}\ m

Ladder = \frac{9}{4}\ m

Ladder = 2\frac{1}{4}\ m

Hence, the length of the ladder is: 2\frac{1}{4}\ m or 2.25m

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Answer:

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3 years ago
How do I get the answer y= 2x^2+9x-5
guapka [62]

Answer:

Quadratic Formula

so

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Step-by-step explanation:

Whenever you see a problem in this form, which you will see a lot of, you can try to factor it or use the "least squares" method or what have you, but those won't always work, unfortunately.

Fortunately, the quadratic formula will never fail you with quadratic expressions.

This is the Quadratic Formula

x = \frac{-b \frac{+}{-} \sqrt{b^2-4ac}  }{2a}

a is the the number on the variable with the exponent ^2

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Since we're looking for a number with an equation that has a square root in it, we're going to get two answers. These two answers come from the radical being separately added AND subtracted from the radical. It's basically two problems.

Plugging  in our numbers to this equation gives us x values of -5 and 0.5. This will always work with polynomials with factors of ^2 in them.

If you have a TI-84 calculator or newer, there's a tool on it that will factor polynomials like this one for you just by giving it the numbers.

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3 years ago
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DerKrebs [107]

Answer:

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We know Keiko wants to do exercise at least 30 minutes a day, and she wants ideally to mix up the activities, by combining running and swimming into her schedule.

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