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PIT_PIT [208]
3 years ago
11

When x = 4, y = 1 x^2 + 3xy – 7y^2

Mathematics
1 answer:
densk [106]3 years ago
4 0

Answer:

21

Step-by-step explanation:

i worked out the problem

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Simply the following 5 1/3 -7 5/6 + 6 1/4
lana66690 [7]

Answer:

3 \frac{3}{4}\\  /  3.75

Step-by-step explanation:

Step 1: Make all the mixed numbers, improper fractions:

5 \frac{1}{3} = \frac{16}{3}

7\frac{5}{6} = \frac{47}{6}

6\frac{1}{4} =\frac{25}{4}

In order to add/subtract fractions, they must all have a common denominator, the smallest common denominator for all these fractions is 12. And so in order to make 12 the denominator, we must now multiply all the fractions by their multiple.

\frac{16}{3} = \frac{64}{12}

\frac{47}{6} = \frac{94}{12}

\frac{25}{4} = \frac{75}{12}

Time to solve:

\frac{64}{12} -\frac{94}{12} + \frac{75}{12}  =

\frac{-30}{12} + \frac{75}{12} =

\frac{45}{12}

Simplify:

\frac{45}{12} = \frac{15}{4}

Convert to a mixed number:

3 \frac{3}{4}

Hope this helps!

8 0
3 years ago
4.875 in expanded <br> form in fractions
TEA [102]
(4x10)+(8x1/10)+(7x1/100)+(5x1/1000)
6 0
3 years ago
City A is 25% less than population of city B so city A's population is what % of city B
Lerok [7]

City A is 25% less than population of city B. So city A's population is 75% of city B

<h3><u>Solution:</u></h3>

Given that City A is 25% less than population of city B

To find: city A's population is what % of city B

From given information,

City A is 25% less than population of city B

A = B - 25% of B

So we can write as,

A = B - \frac{25}{100} \times B\\\\A = B - 0.25B\\\\A = 0.75B

A = 0.75B can be written as,

A = \frac{75}{100}\times B

city A = 75 % of City B

Thus city A's population is 75% of city B

8 0
4 years ago
What is the largest possible value x could take given that it must be an integer? x &lt; 5
salantis [7]

Answer:

4

Step-by-step explanation:

No greater number than 4 can be x because otherwise it'll be equal to or more than 5

5 0
4 years ago
Need all 3 cuz this is dumb
marusya05 [52]
A a b...............................
3 0
3 years ago
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