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BlackZzzverrR [31]
2 years ago
10

What is 21 X 21 ???? 3 3​

Mathematics
2 answers:
Sergeeva-Olga [200]2 years ago
8 0

Answer: 441

Step-by-step explanation:

21 x 21 = 441

777dan777 [17]2 years ago
4 0

Answer:

21 times 21 is 441

Step-by-step explanation:

i used a calculator

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PLEASE HELP IMMEDIATELY
MissTica

Answer:

<h2>x =  -  \frac{19}{4}</h2>

Option B is the correct option.

Step-by-step explanation:

-  \frac{1}{2}  + x =  -  \frac{21}{4}

Move constant to R.H.S and change its sign:

x =  -  \frac{21}{4}  +  \frac{1}{2}

Take the L.C.M

x =  \frac{ - 21 + 1  \times 2}{4}

x =  \frac{ - 21 + 2}{4}

Calculate

x =  -  \frac{19}{4}

Hope this helps...

Good luck on your assignment..

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3 years ago
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Jim’s picks 16 quarts of berries.He needs 21/4 quarts to make a batch of Jam. If he saves 21/2 quarts of berries to ea, how many
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ch4aika [34]
Subtract 5x to both sides
7 0
3 years ago
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I need help with that
weqwewe [10]

Distribute:

4x-3(x-2y)+1/2(6x-8y)

4x-3x+6y+3x-4y

Gather X and Y terms

x+6y+3x-4y

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6 0
3 years ago
Find the equation of the line that passes through the points (-5,7) and (2,3)
Olegator [25]

Answer:

y=-\frac{4}{7}x+4\frac{1}{7}

Step-by-step explanation:

So, in order to solve this problem, I started off by drawing it out. On my graph that I have attached below, I first started out by locating the points (-5,7) and (2,3). Now, this is an optional step, but I highly encourage practicing your graphing skills by solving this problem on graph paper as well. Next, I connected the two points that I just graphed. This is the line that passes through (-5,7) and (2,3).

Now, here is where the actual solving starts. If you haven't already been taught this yet, I will introduce it to you now. I am going to find the equation of this line by filling in what I know in the equation y=mx+b, where m= the slope of the line, and b= y intercept.

Slope of the line: m= \frac{y_{1} - y_{2}  }{x_{1} - x_{2}  } = \frac{7-3}{-5-2} = \frac{4}{-7}= -\frac{4}{7}

If you haven't been taught how to find the slope of a line I recommend you find out.

Substitute the slope into the equation.

y=-\frac{4}{7} x+b\\

Now, we will solve for the 'b,' or y intercept.

We already have x and y values to use: (-5,7) or (2,3). I'll use x=2 and y=3 to solve for the y intercept.

y=-\frac{4}{7} x+b\\\\3=-\frac{4}{7} *2+b\\\\3=-\frac{8}{7} +b\\b=3+\frac{8}{7} \\b=\frac{21}{7}+\frac{8}{7}=\frac{29}{7} =4\frac{1}{7} \\b=4\frac{1}{7}

Last step: substitute the slope and y intercept into y=mx+b.

y=mx+b\\y=-\frac{4}{7}x+4\frac{1}{7}

That is the answer to this problem.

I hope this helps.

3 0
3 years ago
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