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3 years ago

Evaluate 6y + x5 When x = -3, y = -5 please help <33 current failing:(

Mathematics

2 answers:

Radda [10]3 years ago

8 0

Answer:

-35

Step-by-step explanation:

if you take 6 x -5 ( y ) then -3 x 5 ( x ) then add them together then you get -35.

Andrew [12]3 years ago

4 0

Answer:

Step-by-step explanation:

Since you are failing, i will not give you the answer directly so you can learn, and not just copy the answer down. First, think about what the variable means. They have an open spot in the equation and they give you what to fill in. since x=-3, multiply 5 by -3. You do this because in the equation it says x5 which is equal to x times 5. Then substitute the y, or -5 to have 6(-5)+(-3)5

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-3=t-5s Solve for t I need work shown and I’m so confused on this!!

slega [8]

Answer:

t=5s-3

Step-by-step explanation:

Flip the equation:

5s+t=-3

then add 5s to both sides:

-5s+t+5s=-3+5s

then solve:

5s-3=t

4 0

3 years ago

15+b=23 what’s the answer

Vanyuwa [196]

Answer:

b = 8

Step-by-step explanation:

23 - 15 = 8

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3 years ago

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Anarel [89]

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3 years ago

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Suppose that lithium calculator battery with a charge of 3 volts, actually has a voltage with uniform distribution between 2.93

Dmitrij [34]

Answer:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform probability distribution is:

$M = \frac{a + b}{2}$

The standard deviation of the uniform distribution is:

$S = \sqrt{\frac{(b-a)^{2}}{12}}$

The probability that we find a value X lower than x is given by the following formula.

$P(X \leq x) = \frac{x - a}{b-a}$

Uniform distribution between 2.93 and 3.1 volts

This means that $a = 2.93, b = 3.1$ . So

Mean:

$M = \frac{2.93 + 3.1}{2} = 3.015$

Standard deviation:

$S = \sqrt{\frac{(3.1 - 2.93)^{2}}{12}} = 0.049$

What is the probability that a battery has a voltage less than 2.98?

$P(X \leq 2.98) = \frac{2.98 - 2.93}{3.1 - 2.93} = 0.2941$

So the correct answer is:

b. E(X) = 3.015, STDEV(X)= 0.049, P (X ≤ 2.98) = 0.2941

6 0

3 years ago

which linear system has been correctly solved for one of the variables from the following system? 2x - y = -1 2x y = -7 2x - y =

mr Goodwill [35]

If you would like to solve the system of linear equations, you can do this using the following steps:

2x - y = -1 ... y = 2x + 1
2x + y = -7 ... y = -7 - 2x

The correct result would be: y = 2x + 1, 2x + y = -7.

4 0

3 years ago