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Natali [406]
3 years ago
8

Somebody please help me idk what to do ‍♂️‍♂️

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
8 0

Answer:

21

Step-by-step explanation:

Note that n! = n(n - 1)(n - 2) ..... × 3 × 2 × 1, thus

7! = 7 × 6 × 5 × 4 × 3 × 2 × 1

5! = 5 × 4 × 3 × 2 × 1

2! = 2 × 1

Hence

cancel 5 × 4 × 3 × 2 × 1 on numerator/ denominator, leaving

\frac{7(6)}{2(1)} = \frac{42}{2} = 21

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Express the ratio $36 in 4 days as a ratio in its simplest form
Effectus [21]

Answer:

9:1or 1:9

Step-by-step explanation:

The original ratio is 36:4 but we have to simplify

36÷4=9

4÷4=1

so in the end of it you receive a ratio of 9:1 or 1:9

6 0
3 years ago
A race is 7/10 kilometers long. Maya ran 9 of these races. How far did she run altogether? Write your answer in simplest form.
gayaneshka [121]

Answer:

She ran

6 \frac{3}{10} km \: or \: 6.3 \: km

Step-by-step explanation:

To find the answer you multiply the amount of races (9) by the length of each race (7/10 km).

\frac{7}{10}  \times  \frac{9}{1}  =  \frac{63}{10}  \: or \: 6 \frac{3}{10}

8 0
2 years ago
What is the sine and cosine of A?
valkas [14]
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3 0
3 years ago
The sum of seven interior angle measurements is an octagon equal 835°. What is the angle measurement of the eighth angle?
creativ13 [48]

\bf \textit{sum of all interior angles in a polygon}\\\\ S=180(n-2)~~ \begin{cases} n=\textit{number of sides}\\[-0.5em] \hrulefill\\ n=8 \end{cases}\implies S=180(8-2) \\\\\\ S=180(6)\implies S=1080

now, we know 7 of those angles are already 835°, so the last one must be 1080 - 835 = 245°.

4 0
3 years ago
Which of the angles in the figure are supplementary to Ð5?
Paraphin [41]

Answer:

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Step-by-step explanation:

Two angles are called supplementary when their measures add up to 180 degrees.

So here the angle supplementary to Angle 5 would be 6, since adding both would get us 180 degrees. Then there's angle 7 which would also give us 180 degrees when added to angle 5.

6 0
3 years ago
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