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Vinvika [58]
3 years ago
6

Pls help me really bad at math

Mathematics
1 answer:
MrRa [10]3 years ago
5 0
I’m not going to give you the exact answers because I believe you can do it :)))

So what you should do is 180 divided by 1/5

When people write a slash (/) it means divide

And a fraction is the same as saying 1 divided by 5

180 divided by 3/10

180 divided by 1/10

180 divided by 2/5
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100 points , please help. I am not sure if I did this correct if anyone can double-check me thanks!
Nookie1986 [14]

Step-by-step explanation:

\lim_{n \to \infty} \sum\limits_{k=1}^{n}f(x_{k}) \Delta x = \int\limits^a_b {f(x)} \, dx \\where\ \Delta x = \frac{b-a}{n} \ and\ x_{k}=a+\Delta x \times k

In this case we have:

Δx = 3/n

b − a = 3

a = 1

b = 4

So the integral is:

∫₁⁴ √x dx

To evaluate the integral, we write the radical as an exponent.

∫₁⁴ x^½ dx

= ⅔ x^³/₂ + C |₁⁴

= (⅔ 4^³/₂ + C) − (⅔ 1^³/₂ + C)

= ⅔ (8) + C − ⅔ − C

= 14/3

If ∫₁⁴ f(x) dx = e⁴ − e, then:

∫₁⁴ (2f(x) − 1) dx

= 2 ∫₁⁴ f(x) dx − ∫₁⁴ dx

= 2 (e⁴ − e) − (x + C) |₁⁴

= 2e⁴ − 2e − 3

∫ sec²(x/k) dx

k ∫ 1/k sec²(x/k) dx

k tan(x/k) + C

Evaluating between x=0 and x=π/2:

k tan(π/(2k)) + C − (k tan(0) + C)

k tan(π/(2k))

Setting this equal to k:

k tan(π/(2k)) = k

tan(π/(2k)) = 1

π/(2k) = π/4

1/(2k) = 1/4

2k = 4

k = 2

8 0
3 years ago
kelly subscribes to a service called mysongs for downloading music she pays a $7 fee each month to download an unlimited numbers
Nastasia [14]

subtract the fee from the total to get the amount actually spent on songs

23.80-7 = 16.80

 divide that amount by price per song to get number of songs downloaded

16.80 /0.20 = 84 songs

8 0
3 years ago
How many solutions exist for the given equation?<br>12×+1=3(4×+1)-2​
Ipatiy [6.2K]

Answer:

infinite Solutions

Step-by-step explanation:

12x+1 = 12x+3-2

12+1 = 12x+1

The equation is same on both sides, so x can be anything.

5 0
3 years ago
Read 2 more answers
Please help me match this
Setler [38]
4/5=0.8
0.35=7/20
3/8=0.375
0.775=31/40

You could have use a calculator for this but you’re welcome
8 0
3 years ago
Solve the equation: 5.4 -7.5 -6.3 = Solve the equation:​
yan [13]

The answer would be -8.4.

4 0
2 years ago
Read 2 more answers
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