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Cloud [144]
3 years ago
7

Which function passes through the points (2, 15) and (3, 26)?

Mathematics
2 answers:
abruzzese [7]3 years ago
8 0
The answer is B y= 11x-7
kotykmax [81]3 years ago
7 0

Answer:

its b

Step-by-step explanation:

i need points  sorry

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Find the value of z.
san4es73 [151]

Answer:

Option D, 110

Step-by-step explanation:

first we find x

10x+20-80=2(2x+15)

or, x=15

now, 10x+20 = 170

so, z = 360-170-80 = 110

7 0
3 years ago
How do you do this question?
Gemiola [76]

Answer:

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

Step-by-step explanation:

∫ 15 sin(√(at)) dt

Use substitution:

If x = √(at), then:

dx = ½ (at)^-½ (a dt)

dx = a / (2√(at)) dt

dx = a/(2x) dt

dt = (2/a) x dx

Plugging in:

∫ 15 sin x (2/a) x dx

30/a ∫ x sin x dx

Integrate by parts:

If u = x, then du = dx.

If dv = sin x dx, then v = -cos x.

∫ u dv = uv − ∫ v du

= 30/a (-x cos x − ∫ -cos x dx)

= 30/a (-x cos x + ∫ cos x dx)

= 30/a (-x cos x + sin x + C)

Substitute back:

30/a (-√(at) cos(√(at)) + sin(√(at)) + C)

-30√(t/a) cos(√(at)) + 30/a sin(√(at)) + C

5 0
3 years ago
Decide whether each equation is true for all, one, or no values of x.<br>​
Alina [70]

Answer:

Step-by-step explanation:

4 0
2 years ago
There are 100 people in a sport centre. 67 people use the gym. 62 people use the swimming pool. 56 people use the track. 38 peop
Anarel [89]

Answer:

  • 0.3 or 30%

Step-by-step explanation:

<u>Number of people using more than one sport facility:</u>

  • 38 - gym and pool
  • 31 - pool and track
  • 33 - gym and track
  • 16 - all three

<u>Since 16 is counted for all three, total number of those using more than one facility is therefore:</u>

  • 38 + 31 + 33 - 16*2 = 70

<u>Number of people using exactly one facility is:</u>

  • 100 - 70 = 30

<u>Probability of the person using exactly one facility is:</u>

  • 30/100 = 0.3 or 30%
5 0
2 years ago
2 glasses of milk and 3 snack bars have a total of 73 carbohydrates​ (carbs), and 4 glasses of milk and 2 snack bars have a tota
Lena [83]

Answer:

There are 14 Carbs in 1 glass of milk.

8 0
3 years ago
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