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Vesna [10]
3 years ago
13

Solve Sec(2x)-4=0 for the first two positive solutions. thanks!

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
6 0

Answer:

2e-78

Step-by-step explanation:

a lot of factorials bruuru

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Liam sarah and Emily share some money in the ratio 2:3:7 Emily got £80 more than liam how much money did sarah get
sergey [27]
Sarah got £48, Liam got £32, and Emily got £112
3 0
3 years ago
The surface areas of two similar solids are 340 yd² and 1,158 yd². The volume of the larger solid is 1,712 yd³. What is the volu
ratelena [41]

The ratio of surface area is equal to the ratio of the square of the corresponding dimensions. And ratio of volumes of two solids is equal to the cube of the ratio of the corresponding dimensions .

We start with the relation between ratio of surface area and ratio of corresponding sides. That is

\frac{340}{1158}=(\frac{x}{y} )^2

Here x and y are the corresponding sides .

\frac{x}{y} =\sqrt{\frac{340}{1158} } =0.542

Let the volume of the smaller one be v

\frac{v}{1712}=0.542^3

v=1712*0.542^3=272

So for the smaller solid, volume is 272 . And the correct option is the first option .

4 0
4 years ago
1. what is 10% of 20? 2.What is 5% of 10?
Airida [17]
Hello,

Shall we begin?

1. what is 10% of 20?      = 20 * 0.1 = 2
2.What is 5% of 10?        = 10 * 0.05 = 0,5
3. What is 25% of 100?   = 100 * 0,25 = 25
4. What is 15% of 50?     = 50 * 0.15 = 7,5
5. What is 30% of 60?     = 60 * 0,3 = 18
6. What is 50% of 80?     = 80 * 0,5 = 40
7. What is 20% of 120?   = 120 * 0,2 = 24
8. What is 35% of 70?     = 70 * 0,35 = 24.5
9. What is 75% of 150?   = 150 * 0,75 = 112.5
10. What is 60% of 90?   = 90 * 0,6 = 54
11. What is 40% of 40?   = 40 * 0,4 = 16
12. What is 55% of 110? = 110 * 0.55 = 60.5
13. What is 80% of 130? = 130 * 0,80 = 104



5 0
3 years ago
Read 2 more answers
New York City is a popular feild trip destination. This year the senior
lilavasa [31]

Step-by-step explanation: look so if you have

shcool A its 8v+4b=12

and

School B: 12v+4b= 16

since both classes used 4 busses we can use elimination by subtracting the A class Equation from the b class equation to solve from v for its value Then, use either equation and the now found value for v to solve for b.

You should find part of the process to be

12v+4b-(8v+4b)=12-16 which shows the van holds only a few people even before continuing the solution.

Answer -4

5 0
3 years ago
If  the three angles  of  a quadrilateral are 120,  130, 10 then the fourth angle is​
Aloiza [94]

Answer:

100

Step-by-step explanation:

120 + 130 + 10 = 260

360 - 260 = 100

4 0
3 years ago
Read 2 more answers
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