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MAXImum [283]
2 years ago
14

Evaluate 3a+15+bc−6, when a=7, b=3, and c=15. Enter your answer in the box.

Mathematics
2 answers:
melamori03 [73]2 years ago
5 0
I think it's 75.
____________
stepladder [879]2 years ago
5 0
Given:
3a + 15 + bc - 6
a=7 b=3 c=15
First, you would have to substitute in the numbers for your variables:
3a + 15 + bc - 6
3(7) + 15 + (3)(15) - 6
Next, you want to simplify:
3(7) + 15 + (3)(15) - 6
21 + 15 + 45 - 6
Now, you would want you would want to combine everything together from left to right:
21 + 15 + 45 - 6
36 + 45 - 6
81 - 6
75
Answer: 75

I hope this helps!
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Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.5 and a mean diameter of 205
lawyer [7]

Answer:

the probability is 0.0750

Step-by-step explanation:

The computation of the probability is shown below;

The mean of x is

= 1.5 ÷ √79

= 0.1688

Now the probability is

= P(Z < -0.3 ÷ 0.1688) + P(\bar{x} > 0.3 ÷ 0.1688)

= P(Z < -1.78) + P(Z > 1.78)

= P(Z < -1.78) + 1 - P(Z < 1.78

= 0.0375 + 1 - 0.9625

= 0.0750

hence, the probability is 0.0750

3 0
2 years ago
Round 85714.285714285714
djverab [1.8K]

Answer:

to the nearest what

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Can someone answer my question please
Charra [1.4K]

Answer:

Step-by-step explanation:

Arc length=∅/360×2πr (can't find the symbol of theta, use ∅ instead LOL)

\frac{\theta }{360}\cdot 2\pi \left(11\right)=16

\frac{\theta }{360}=\frac{16}{22\pi }

\theta \:=\frac{16}{22\pi \:}\cdot 360

{\theta}=83.34

8 0
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Simplify:<br> {[(16 ÷ 4) × (2 × 6)] ÷ 6} + 4 =
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<span>{[(16 ÷ 4) × (2 × 6)] ÷ 6} + 4 = 
</span><span>{[(4) × (12)] ÷ 6} + 4 = 
</span>{[4 × 12] ÷ 6} + 4 = 
{[48] ÷ 6} + 4 = 
{48 ÷ 6} + 4 = 
{8} + 4 = 
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12
3 0
3 years ago
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Let x be the amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train. Suppose that the d
larisa [96]

Answer:

a) P(X

P(X>14) = 1-P(X

b) P(7< X

c) We want to find a value c who satisfy this condition:

P(x

And using the cumulative distribution function we have this:

P(x

And solving for c we got:

c = 20*0.9 = 18

Step-by-step explanation:

For this case we define the random variable X as he amount of time (in minutes) that a particular San Francisco commuter must wait for a BART train, and we know that the distribution for X is given by:

X \sim Unif (a=0, b =20)

Part a

We want this probability:

P(X

And for this case we can use the cumulative distribution function given by:

F(x) = \frac{x-a}{b-a} = \frac{x-0}{20-0}= \frac{x}{20}

And using the cumulative distribution function we got:

P(X

For the probability P(X>14) if we use the cumulative distribution function and the complement rule we got:

P(X>14) = 1-P(X

Part b

We want this probability:

P(7< X

And using the cdf we got:

P(7< X

Part c

We want to find a value c who satisfy this condition:

P(x

And using the cumulative distribution function we have this:

P(x

And solving for c we got:

c = 20*0.9 = 18

3 0
2 years ago
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