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Studentka2010 [4]

3 years ago

11

Solve for e E=mc2 m=3 C=6

1 answer:

Klio2033 [76]3 years ago

5 0

To solve for E, we need to substitute the values and then simplify. Though, this question is fairly strange because c is the speed of light, which is definitely not 6.

E = mc²

Substitute
E = 3 * (6)²

Simplify
E = 108

This means, that in this scenario, E = 108.

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Algebra tiles to prove that 4 + 8x and 4(2x+1)

Dafna1 [17]

Not sure what algebra tiles are

not sure how to absolutely prove
I can prove it works at least most of the time by subsitute ing number for x

remember that 0,1,2 have special properties and are not very good for subsituting so
try 4
4+8(4)=4(2(4)+1)
true or false?
4+8(4)=4(2(4)+1)
multipily
4+32=4(8+1)
36=4(9)
36=36
this is treu at least for the number 4
another way is to believe in the distributive property where
a(b+c)=ab+ac so then
4(2x+1)=4(2x)+4(1)=8x+4=4+8x

7 0

3 years ago

Read 2 more answers

X= ? The trainable a below are similar

ratelena [41]

$\frac{x + 7}{3x + 3} = \frac{19}{38} \\ \Leftrightarrow \frac{x + 7}{3x + 3} = \frac{1}{2} \\ \Leftrightarrow 2x + 14 = 3x + 3 \\ \Leftrightarrow x = 11$

6 0

3 years ago

Working together, it takes Sam, Jenna, and Francisco two hours to paint one room. When Sam works alone, he can paint one room in

lutik1710 [3]

Answer: 12 hours

Step-by-step explanation:

Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.

When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.

Let 't' be the time taken by Francisco to paint one room on his own.

Then , we have

Rate of work of Sam +Rate of work of Jenna + Rate of work of Francisco =Rate of work they all do together

$\dfrac{1}{6}+\dfrac{1}{4}+\dfrac{1}{t}=\dfrac{1}{2}$

i.e. $\dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{1}{6}+\dfrac{1}{4})$

i.e. $\dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{4+6}{24})$

i.e. $\dfrac{1}{t}=\dfrac{1}{2}-\dfrac{10}{24}$

i.e. $\dfrac{1}{t}=\dfrac{1}{2}-\dfrac{5}{12}$

i.e. $\dfrac{1}{t}=\dfrac{6-5}{12}$

i.e. $\dfrac{1}{t}=\dfrac{1}{12}$

i.e. t= 12

Hence, Francisco would take 12 hours to paint one room on his own.

8 0

3 years ago

When plotted on a grid, the paths between four neighborhood houses form the shape of a kite as shown.

KatRina [158]

Answer:

The area of the figure is 1,000 square feet

Step-by-step explanation:

we know that

The area of the kite ABCD

is equal to

$A=\frac{1}{2}[AC*BD]$

where

AC and BD are the diagonals of the kite

we have

$BD=50\ ft\\AC=40\ ft$

substitute

$A=\frac{1}{2}[40*50]=1,000\ ft^2$

3 0

3 years ago

A. Domain.....<br><br> B. Domain.....<br><br> C. Domain.....<br><br> D. Domain

shusha [124]

The answer to the question is b

7 0

4 years ago