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Sonja [21]
3 years ago
12

Please help me!

Mathematics
1 answer:
MAXImum [283]3 years ago
8 0

area is 8*10 = 80 ( Area of square formed by dotted line)

 1/2 *4 * 10 = 20 (Area of small triangle formed by dotted line)

20 +80 = 100 square inches

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3 years ago
A 10-foot ladder leans against a wall so that it is 6 feet high at the top. The ladder is moved so that the base of the ladder t
konstantin123 [22]

Answer:

The top of the ladder is now at 10 ft.

Step-by-step explanation:

At the start, we have a height H=6, a length L=10 and a base B, that has to be calculated by the Pythagorean theorem:

B^2=L^2-H^2=10^2-6^2=100-36=64\\\\B=\sqrt{64}=8

The base is moved twice the distance the height moves up.

We called this distance x, so we have:

L^2=(H+x)^2+(B-2x)^2=H^2+2Hx+x^2+B^2-4Bx+4x^2\\\\L^2=(H^2+B^2)+5x^2+(2H-4B)x\\\\L^2=L^2+5x^2+(2H-4B)x\\\\0=5x^2+(2H-4B)x\\\\5x+(2H-4B)=0\\\\x=\dfrac{4B-2H}{5}=\dfrac{4*8-2*6}{5}=\dfrac{32-12}{5}=\dfrac{20}{5}=4

The new height (H+x) is

H'=H+x=6+4=10

The base travels 2x=8, so the new base B' is 0.

This means that the ladder is all against the wall (L=H').

6 0
3 years ago
I have a math word problem that I need help with solving it and showing me how to work it out. The question is as follows:. Bill
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Get I don't know the answer but there is this app called Photo Math! it works perfectly lots of teachers recommend it I suggest you download it, it shows you the answer and show you step by step. its for iPod, iPhone, Samsung , and Androids
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3 years ago
Write the equation in standard form of the circle where center (-2,0) and radius 5​
DIA [1.3K]

Answer:

x²+y²+4x-21=0

Step-by-step explanation:

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(x+2)²+y²=25

x²+4x+4+y²=25

x²+y²+4x-21=0

3 0
3 years ago
Rewrite each phrase as an algebraic expression subtract 7 from c
Neko [114]

The phrase "subtract 7 from c" written in algebraic expression is c - 7

<h3>Algebraic expression</h3>

This is a system of computation using letters or other symbols to represent numbers, with rules for manipulating these symbols.

  • Subtract 7 from c

= c - 7

For instance, if c = 15

c - 7

= 15 - 7

= 8

Therefore, the phrase "subtract 7 from c" written in algebraic expression is c - 7

Learn more about algebra:

brainly.com/question/4344214

#SPJ1

3 0
2 years ago
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