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notka56 [123]
3 years ago
5

5/8=n-2/10 9/x=10/x-7 p+9/p=3/10

Mathematics
1 answer:
lesya692 [45]3 years ago
4 0
Download photo math for equations like this, it will also give you it step by step :)
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Please help! Correct answer only! This assignment is due today.
vichka [17]

Answer:

  0.2601

Step-by-step explanation:

There are 19C16 = 969 ways for Lester to choose 16 of the 19 objects.

There are 12C11 = 12 ways to choose 11 vases, and 7C5 = 21 ways to choose a non-vase, for a total of (12)(21) = 252 ways to choose exactly 11 vases in 16 objects.

So, the probability of interest is ...

  252/969 ≈ 0.2601

_____

nCk = n!/(k!(n-k)!) ... the number of ways to choose k objects from n

5 0
3 years ago
Help with this pleaseeee​
ELEN [110]

Answer:

(- 3, 37) and (- \frac{5}{2}, \frac{63}{2} )

Step-by-step explanation:

Given the 2 equations

2x² - y + 19 = 0 → (1)

y + 11x = 4 → (2) ← subtract 11x from both sides

y = 4 - 11x → (3)

Substitute y = 4 - 11x into (1)

2x² - (4 - 11x) + 19 = 0

2x² - 4 + 11x + 19 = 0

2x² + 11x + 15 = 0 ← in standard form

(2x + 5)(x + 3) = 0 ← in factored form

Equate each factor to zero and solve for x

2x + 5 = 0 ⇒ 2x = - 5 ⇒ x = - \frac{5}{2}

x + 3 = 0 ⇒ x = - 3

Substitute these values into (3) for corresponding values of y

x = - \frac{5}{2} : y = 4 + \frac{55}{2} = \frac{63}{2} ⇒ (- \frac{5}{2}, \frac{63}{2} )

x = - 3 : y = 4 + 33 = 37 ⇒ (- 3, 37 )

4 0
3 years ago
I'LL GIVE BRAINLIEST ANSWER TO CORRECT ANSWER
inn [45]
15*(x+20)+26*x = 3115
8 0
3 years ago
This is the last one!
grigory [225]

Answer:

The answer is c i believe

Step-by-step explanation:

7 0
3 years ago
Can you guys help me wit number 7 please nn thanks
Vaselesa [24]

Answer:

10 to the power 3

Step-by-step explanation:

10 to the power 6 divided by 10 to the power 3 is 10 to the power 3.

3 0
2 years ago
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