Mathematics, 05.07.2019 15:00 needthehelp78

Jan has 10 reports to file. if each report takes an average of 75 minutes. to file, how long will it take to file 70% of them?

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Answer from: chjffjfjfjfjfjg834

10 × 75 = 750 minutes to file 100% of the files. (Approximately 12.5 hours)

$\frac{70}{100}$ = 0.7

70% of these files = 750 × 0.7 = 525 minutes.

Converting 525 minutes into hours, Jan would to take 8.75 hours to file 70% of the files.

Answer from: SchoolFirst9811

It will take 525 minutes to file 70% reports.

Step-by-step explanation:

Average Time taken to file each report , $t_1=75\, minutes$

Therefore time taken to file 10 reports , $t_{10}=10\times t_1$

=> $t_{10}=10\times 75\, minutes=750\, minutes$

To file 70 % reports time taken, $T=\frac{70}{100}\times t_{10}=\frac{70}{100}\times 750 \, minutes$

=>T = 525 minutes

Thus it will take 525 minutes to file 70% reports.

Answer from: Quest

1010: 3030

is it i think

Answer from: Quest

Answer: question no. 1 -a. yes, the sides are in the ratio 2 : 5.question no. 2 -b. 59°question no. 3 -c. angles x and y are remote interior angles.question no. 4 -d. 90°, 45° and 45°question no. 5 -b. mn and qrstep-by-step explanation: question no. 1 -rs : xu = 3 : 7.5 = 2 : 5rt : x? = 6.4 : 16 = 2 : 5st : u? = 6 : 15 = 2 : 5as the ratios of all sides are equivalent, the triangles must be congruent and the sides must be proportional.therefore, the answer is: a. yes, the sides are in the ratio 2 : 5.question no. 2 -in the second diagram, angle b is the only letter not shown. therefore, the number must be equivalent to angle b.if we substitute the value of angle b as being 22° in the first diagram, we can now use the angle sum of a triangle to obtain the value of angle a.angle sum of a triangle = 180°therefore: let angle a = aa + 99 + 22 = 180a = 180 - 99 - 22a = 59°therefore, the answer is: b. 59°question no. 3 -angles x and y don't share the vertex of the triangle with the exterior angle w. remote interior angles don't share a vertex of a triangle with an exterior angle. this means that angles x and y are remote interior angles.therefore, the answer is: c. angles x and y are remote interior angles.question no. 4 -the sum of all interior angles of a triangle must be equivalent to 180°.90°, 45° and 45° are the only set of angle measures that are equivalent to 180°.therefore, the answer is: d. 90°, 45° and 45°question no. 5 -the only pair of sides stated in the options which are corresponding are mn and qr.therefore, the answer is: b. mn and qr.