A 20ft ladder is leaning against a house. The bottom of the ladder is 3 ft from the house. To the nearest tenth of a foot, abou
1 answer:
Answer: 19.8 ft
Step-by-step explanation:
Use the Pythagorean Theorem formula to solve for how high the top of the ladder reach.
The formula says a^2 + b^2 = c^2
Where a and b are the two legs and C is the hypotenuse.
In this situation, the hypotenuse will be length of the ladder , and either a or b will be the length of the ladder from the building or the length of how long the ladder.
a will be 3 , and c will be 20. Input in the values into the formula and solve for b.
3^2 + b^2 = 20^2
9 + b^2 = 400
-9 -9
b^2 = 391
b =
b = 19.77371 round to the nearest tenth is , 19.8
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Option C
The answer is 207 or 2 hundreds 7 ones in unit form or two hundred seven in word form.
<h3>Further explanation</h3>2 thousands 7 tens are a unit form. The standard form is 2,070.
Explanations and an example of questions about the four types of number forms can be found at brainly.com/question/4725342.
The key problem is working out the value of 90,000 divide by 10. This is a division operation.
Option-1
Both numbers are divided by 10.
The result is
Option-2
Division operations can be written as fractions, like this.
The numerator and denominator are both divided by 10, or 'cross out a zero from both'.
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If x is divided by y equals z, then x is equal to y multiplied by z.
Let's prove it!
This is proven.
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Keywords: 2 thousands 7 tens divided by 10, division operation, unit form, standard form, fractions, cross out a zero, the numerator and denominator
