3 years ago

PLEASE HELLPPPPPPPP.......

Mathematics

2 answers:

Ksivusya [100]3 years ago

5 0

Answer:

The other person had the best answer for your question but I think it might be c=9

Vanyuwa [196]3 years ago

4 0

Answer:

11in

Step-by-step explanation:

a^2+b^2=c^2 when c is the hypotenuse

10^2+sqrt21^2=c^2

100+21=c^2

121=c^2

11=c

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X + y = 4<br> y = -x + 4

rjkz [21]

Answer:

Infinite Solutions

Step-by-step explanation:

x + y = 4

y = -x + 4

x + y = 4

x - x + 4 = 4

0 = 0

5 0

2 years ago

What is the answer to <br>|5 + -4|

luda_lava [24]

$|a|=\left\{\begin{array}{ccc}a&if&a\geq0\\-a&if&a < 0\end{array}\right\\\\|5+(-4)|=|5-4|=|1|=1$

3 0

3 years ago

If 2^(x+3) - 2x = k(2^x) what is the value of k

svlad2 [7]

Answer:

$\large\boxed{C)\ 7}$

Step-by-step explanation:

Use:

$a^n\cdot a^m=a^{n+m}$

$2^{x+3}-2^x=2^x\cdot2^3-2^x=8\cdot2^x-2^x=(8-1)\cdot2^x=7\cdot2^x\\\\2^{x+3}-2^x=k(2^x)\\\\7\cdot2^x=k(2^x)\Rightarrow k=7$

$8\cdot2^x-2^x=8\cdot2^x-1\cdot2^x=(8-1)(2^x)=7\cdot2^x\\\\\text{distributive property:}\ a(b-c)=ab-ac$

8 0

3 years ago

Help please it's a math assignment

expeople1 [14]

I'm pretty sure it's graph A. I apologize if it's wrong hope this helped.

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3 years ago

a garden is in the shape of a rectangle 35 feet long and 29 feet wide. if fencing cost $7 a foot, what will it cost to plate fen

miskamm [114]

It would cost $896 to plate fencing around the garden

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3 years ago