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mel-nik [20]
3 years ago
14

1 Expand and simplify each expression a) x(x+2)+x(x+5)

Mathematics
1 answer:
Vladimir [108]3 years ago
3 0
X^2 + 2x + x^2 + 5x

2x^2 + 7x
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Which number is equivalent to 5.4 X 10 to the power of 2​
solmaris [256]

Answer:

=540

Step-by-step explanation:

To get the answer all we have to do is convert the scientific notation into a regular one. We can do this by moving the decimal place depending on what the power is.

In this case, the power/exponent/the number raised, whatever you would call it is 2, so we are going to move it to two places.

Hope this helps!!

3 0
3 years ago
It takes an average of 22 weeks for someone over 55 to find a new job, compared with 16 weeks for younger workers. assume the pr
Mademuasel [1]
(a) someone over 55
mean, mu = 22
standard deviation, sigma = 2
X=19
Z(X)=(X-mu)/sigma=(19-22)/2=-1.5
P(x>X)=1-P(x<X)=1-0.0668072=0.9331928
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8 0
4 years ago
Find three consecutive whose sum 237
Nina [5.8K]

Answer:

78 79 80

Step-by-step explanation:

Let the smallest number = x

Let the next number = x + 1

Let the largest number = x + 2

x + x + 1 + x + 2 = 237      Add together to get the equation

3x + 3 = 237                     Subtract 3 from both sides.

3x + 3 - 3 = 237 - 3          Combine the right

3x = 234                           Divide by 3

x = 234/3

x = 78

The smallest number is 78

The next number 79

The highest number is 80

8 0
3 years ago
Read 2 more answers
Carmen likes to ride her skateboard down the hill to the bus stop. It
Charra [1.4K]
I’m pretty sure it’s about 296 feet
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3 years ago
What is the rule for the given sequence? 3, 8, 23, 68, 203,
EleoNora [17]

Answer: Add the number previously added multiplied by 3;

+3x, where x is the number that was added previously

Step-by-step explanation:

3+5=8. That's the first equation, where 5 is x. Then the next equation, 8+3x=23. 8+15=23. It works for all of the equations, so that's the pattern.

4 0
3 years ago
Read 2 more answers
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