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3 years ago

I need the answers for these questions

Mathematics

2 answers:

laiz [17]3 years ago

4 0

1. 17/5
2. 25/4
3. 25/12
4. 27/10
5. 2 2/5
6. 8
7. 10 2/3
8. 1 8/12 or 1 2/3

umka2103 [35]3 years ago

3 0

1. 17/5
2. 25/4
3. 25/12
4. 27/10
5. 2 2/5
6. 8
7. 10 2/3
8. 1 8/12

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Sec 16° cosec 74° - cot 74° tan 16°

kondaur [170]

Answer:

Step-by-step explanation:

sec 16° cosec 74° - cot 74° tan 16°

= 1/ cos 16 * 1/ sin 74 - 1/tan 74 * tan16

= 1/ cos16 sin 74 - cos74/ sin74 * sin 16 / cos 16

Now cos 16 = sin 74 and sin 16 = cos 74 (supplementary angles) so:

= 1 / cos^2 16 - sin 16/cos 16 * sin 16 / cos 16

=( 1 - sin ^2 16 )/ cos^2 16

= cos^2 16 / cos^2 16

= 1.

6 0

3 years ago

Three classes have the same number of students. The teachers compared attendance on one Friday. Mr. Lopez had 92.5% of his stude

Sunny_sXe [5.5K]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Suppose the number of students in one of the classes is :

$x$

So ;

$Mr.Lopez \: \: had \: \: \frac{92.5}{100}x \\$

_________________________________

$Mrs.Foster \: \: had \: \: \frac{19}{20} x \\$

So :

$Mrs.Foster \: \: had \: \: \frac{19 \times 5}{20 \times 5} x \\$

$Mrs.Foster \: \: had \: \: \frac{95}{100}x \\$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

$Ms.Kelly \: \: had \: \: 0.9x$

$Ms.Kelly \: \: had \: \: \frac{9}{10} x \\$

$Ms.Kelly \: \: had \: \: \frac{90}{100} x \\$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Compare :

$\frac{95}{100} x > \frac{92.5}{100} x > \frac{90}{100} x \\$

Thus :

$Mrs.Foster’s \: \: class \: > \: Mr.Lopez’s \: \: class \: > \: Ms.Kelly’s \: \: class \\$

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8 0

3 years ago

A 4-ft vertical post casts a 20-in shadow at the same time a nearby cell phone tower casts a 120-ft shadow. How tall is the c

Sedaia [141]

change 20 in to ft

20/12 = 1 2/3 ft

4 ft x ft

------- = ---------------

5 /3 ft shadow 120 ft

using cross products

4 * 120 = 5/3 x

480 = 5/3 x

multiply each side by 3/5

480 * 3/5 = x

288 ft

7 0

4 years ago

A car is traveling at a speed of 75 kmh. Compute the speed of the car in m/s.

solniwko [45]

20.833333 is the m/s that the car will be going

5 0

3 years ago

Read 2 more answers

16/7 as a mixed number

Anestetic [448]

Answer:

2 2/7

Step-by-step explanation:

7x2 = 14 so 2 would be the whole number.

16 - 14 = 2 so 2 would be the numerator.

This brings us to 2 2/7

3 0

3 years ago

Read 2 more answers