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1 year ago

Evaluate − 5 x 2 + 4 y 3 when x = − 2 and y = 2

Mathematics

2 answers:

vodomira [7]1 year ago

5 0

Answer:

answer is 39

Step-by-step explanation:

So, we start with the original problem:

−

Then we substitute the given

and

values into the expression:

(

)

−

(

)

Now, according to the order of operations, we simplify the exponential powers first, thus, reducing the expression to this:

(

)

−

(

)

Then, we use the order of operations again and do the multiplication next:

−

We then use the order of operations a final time and finish off the expression with subtraction:

Sophie [7]1 year ago

4 0

Answer:

hope this is helpful.

putting values of X and y in the equation

Answer is <em><u>12</u></em>

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Answer:

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2 years ago

Please help and thanks

pav-90 [236]

Answer: Bottom left corner

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=============================================================

Explanation:

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3 years ago

I need help with letter D

Ivahew [28]

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4 0

3 years ago

3.11 A shipment of 7 television sets contains 2 defective sets. A hotel makes a random purchase of 3 of the sets. If x is the nu

djverab [1.8K]

Answer:

Probability distribution for x:

$P(x=0)=0.3644\\\\P(x=1)=0.4373\\\\P(x=2)=0.1749\\\\P(x=3)=0.0233\\\\$

Step-by-step explanation:

We can model the number of defective sets in the group of TV sets (variable x) as a binomial variable, with sample size=3 and probability of success p=2/7≈0.2857.

The probability of k defective sets in the group is:

$P(x=k) = \dbinom{n}{k} p^{k}q^{n-k}$

So, we have this probabilty distribution for x:

$P(x=0) = \dbinom{3}{0} p^{0}q^{3}=1*1*0.3644=0.3644\\\\\\P(x=1) = \dbinom{3}{1} p^{1}q^{2}=3*0.2857*0.5102=0.4373\\\\\\P(x=2) = \dbinom{3}{2} p^{2}q^{1}=3*0.0816*0.7143=0.1749\\\\\\P(x=3) = \dbinom{3}{3} p^{3}q^{0}=1*0.0233*1=0.0233\\\\\\$

7 0

3 years ago

What is the slope intercept form of the equation of the line that passes through the points (2,7) and (4,-1)

natka813 [3]

Slope intercept form is y = mx + b.

Y = coordinate y.

M = Slope

X = coordinate x.

B = y-intercept.

Slope formula: (y2-y1) / (x2-x1)

Plug in: (-1 - 7) / (4 - 2) = -4.

We can just insert the pair (2,7) as our x and y to solve b.

7 = -4(2) + b.

Solve for b.

7 = -8 + b.

-b = -8 -7

-b = -15

b = 15.

Original equation:

y = mx + b

y = -4x + 15

5 0

2 years ago

Read 2 more answers