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Murrr4er [49]
3 years ago
13

I need help please!!

Mathematics
2 answers:
mina [271]3 years ago
5 0

Step-by-step explanation:

11

\frac{ - 1}{5}  \times  \frac{4}{7}

\:  \:  \:  \:  \:  \frac{ - 4}{35}

12

\frac{ - 1}{2}  \times  \frac{4}{5}

\frac{ - 2}{5}

13

\frac{ - 3}{2}  \times  \frac{7}{ - 10}

\frac{21}{20}

14

\frac{1}{2}  \times  \frac{7}{8}

\frac{7}{16}

15

\frac{ - 9}{5}  \times   \frac{1}{2}

\frac{ - 9}{10}

16

\frac{ - 32}{9}  \times  \frac{1}{3}

\frac{ - 32}{27}

17

\frac{ - 2}{1}   \div \frac{ - 19}{5}

\:  \:  \:  \:  \:  \: \frac{ - 2}{1}  \times  \frac{5}{ - 19}

\:  \:  \:  \:  \frac{ - 10}{19}

18

\frac{1}{9}  \div  \frac{ - 4}{3}

\frac{1}{9}  \times  \frac{3}{ - 4}

\frac{ - 1}{12}

19

\frac{13}{7}  \div  \frac{23}{4}

\frac{13}{7}  \times  \frac{4}{23}

\frac{52}{161}

20

\frac{ - 37}{10}  \div  \frac{9}{4}

\frac{ - 37}{10}  \times  \frac{4}{9}

\frac{ - 74}{45}

ella [17]3 years ago
5 0

Answer:

1l

Step-by-step explanation:

11.

-1/5÷7/4

Dividing a negative (-) and a positive (+) equals a negative (-)

- \frac{ 1}{5}  \div  \frac{7}{4}

To divide by fraction Multiply ✖ by the reciprocal of that fraction

-  \frac{1}{5}  \times  \frac{4}{7}

Multiply the fractions

-  \frac{4}{35}

Alternate form;

0.1142857

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Type the correct answer in each box. (____)
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Answer:

1. -16; 2. +64; 3. 16

Step-by-step explanation:

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That's a lot of possibilities to check by trial and error. I will just use the one that works.

Try x = 16 by synthetic division.

16|1  -16   64  -1024

  <u>|     16     0   1024 </u>

   1     0   64        0

So,

(x³ - 16x² + 64x - 1024)/(x – 16) = x² + 64

and

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x - 16 = 0        x² + 64 =    0

     x = 16       x²         = -64

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