3 years ago

40% of students have brown eyes 10 have brown eyes how many atudents in the class

Mathematics

2 answers:

maxonik [38]3 years ago

6 0

50 I believe I think that 40% is 40 + 10 = 50?

castortr0y [4]3 years ago

3 0

Answer:

Step-by-step explanation:

40%x = 10

40/100 x=10

x=10* 100/40

x = 25

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Find tan(450-a), If <br><img src="https://tex.z-dn.net/?f=%20%5Ctan%28a%29%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20" id="TexFormula1"

Inessa05 [86]

Answer:

$tan(450-a)=5\sqrt{3}-8$

Step-by-step explanation:

We know that:

$tan(a-b)=\frac{tan(a)-tan(b)}{1+tan(a)tan(b)}$

$tan(450-a)=\frac{tan(450)-tan(a)}{1+tan(450)tan(a)}$

Remember:

450°=360°+60°

and:

$tan(a)=\frac{1}{2}$

Thus:

$tan(450-a)=\frac{tan(60)-tan(a)}{1+tan(60)tan(a)}\\\\$

Then:

$tan(450-a)=5\sqrt{3}-8$

4 0

3 years ago

each school bus going on the field trip hold 36 students and 4 adults. There are 6 filled buses on the field trip. How many peop

Liono4ka [1.6K]

Since one bus holds 36 students and 4 adults, 40 people are in one bus so...
40 (6)
=240

Total 240 people are going on the field trip.

Hope this helped you.
Have a great day!

3 0

3 years ago

Read 2 more answers

Becky orders pens from an office supply company. The table shows how many pens have black ink based on the total number of pens

dedylja [7]

Answer:

Step-by-step explanation:

6 0

3 years ago

14 bands volunteered but 7 played. How many lineups?

ankoles [38]

Answer:

3432

Step-by-step explanation:

Total bands = 14

Bands played = 7

The possible lineups can be calculated using Combination.

So, the possible lineups are 14C7

=> $\frac{14!}{7!(14-7)!}$

=> 3432

8 0

3 years ago

I need helppppppppp

Liono4ka [1.6K]

Standard form: Ax + By = C
Y = 7/5x - 2
Subtract y and add 2
7/5x - y = 2
Multiply by 5
Solution: 7x - 5y = 10

4 0

3 years ago