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Nataly_w [17]
3 years ago
6

On a final exam, Alex answered 21 out of 25 questions correctly. He

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

Answer:

He needs to answer at least 20 questions correctly.

Step-by-step explanation:

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After arianna completed some work, she figured she still had 78 21/100 pictures to paint. if she completed another 34 23/25 pict
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Subtract the number she completed from what she had left to paint originally.

The fractions have different denominators so first step is to rewrite the fractions with a common denominator.

23/25 can be rewritten as 92/100

Now you have 78 21/100 - 34 92/100

Because 21/100 is smaller than 92/100 subtract 1 whole number from 78 and rewrite 1 as 100/100 and add that to the fraction.

78 21/100 becomes 77 121/100

Now subtract :

77 121/100 - 34 92/100

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In y=mx+b what does the b represent?
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In this formula, the m represents the slope of the line and the b represents the y value where x is equal to zero. This value is otherwise known as the y-intercept
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The graph of a line has a slope of -7 and a y intercept of (0,0). Rewrite the equation in standard form (Ax+By=C) with a positiv
Anna11 [10]

Answer:

the equation of the line is 7x + y = 0 .

Step-by-step explanation:

in the standard form of the line that is Ax +By = C we can write it in the form of

By = C - Ax

y = \frac{-A}{B}x +\frac{C}{B}

which is in the form of y = mx +c

where m is the slope of the line and c is y intercept made by the line.

comparing  y = \frac{-A}{B}x +\frac{C}{B} and  y = mx +c

we get that \frac{-A}{B} =m and \frac{-C}{B} = c

since it is given that slope of the line is -7 therefore m = -7 and c = 0

therefore  \frac{-A}{B} =-7 and \frac{-C}{B} = 0

therefore C = 0 , A = 7 and B = 1

therefore the equation becomes 7x + y = 0

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4 years ago
The difference of the squares of two terms factors as the of a sum and a difference of those terms.
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Answer:

product

Step-by-step explanation: no explanation it's the actual answer, it's simple. Thank me Later!

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