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3 years ago

Find the product and express your answer in scientific notation. (1.3 x 10-6)(4 x 1010)

Mathematics

1 answer:

sveticcg [70]3 years ago

3 0

$(1.3\cdot10^{-6})(4\cdot10^{10})=(1.3\cdot4)(10^{-6}\cdot10^{10})=5.2\cdot10^{-6+10}\\\\=\boxed{5.2\cdot10^4}$

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LenKa [72]

The answer would be C because they say if 3 new students arrived each year.

4 0

3 years ago

Help needed math 3 - 10 points read closely

inessss [21]

<h2>Hello!</h2>

The answer is:

The answer is the fourth option,

$f(-3)=-\frac{1}{3}$

Piecewise functions are functions that are composed by two or more expressions, the expression to use will depend of the domain or input that we need to evaluate.

We are given the piecewise function:

$\left \{ {{\frac{1}{x}, if x$

There, we know that:

We should use the first expression if the value to evaluate is less than -2.

So, for this case, the function will be:

$f(x)=\frac{1}{x}$

We should use the second expression if the value to evaluate is greater or equal than 2.

So, for this case, the function will be:

$f(x)=x^{2}$

Now, since we are given that the value to evaluate is -3, and its less than -2, we need to use the first expression, and evaluate it.

$-3$

So, evaluating the function we have:

$f(x)=\frac{1}{x}$

$f(-3)=\frac{1}{-3}$

$f(-3)=-\frac{1}{3}$

Hence, we have that the answer is the fourth option,

$f(-3)=-\frac{1}{3}$

Have a nice day!

7 0

3 years ago

Plz help me with this

goldenfox [79]

Area of triangle=1/2(base×height)
360=1/2((4x-2)(7x+5))
720=(4x-2)(7x+5)
FOIL the binomial
720=28x^2+6x-10
Bring 720 to the other side
28x^2+6x-10-720=0
28x^2+6x-730=0
Factor 2 out
2(14x^2+3x-365)=0
Factor 2(14x+73)(x-5)=0
x-5=0
x=5
It can't be 14x-73=0 because the length can't be negative.
You're welcome.

5 0

3 years ago

Using the foil method, multiply the terms of the binomials below. Show your work in the blanks provided. Then, add any like term

aalyn [17]

Answer:

5x^4+7x^3-6x^2

Step-by-step explanation:

$(x^{2} +2x)(5x^{2} -3x)\\\= 5x^{4}-3x^{3} +10x^{3} -6x^{2}\\= 5x^{4}+7x^{3} -6x^{2}$

7 0

2 years ago

There were 60 runners to start the race. In the first half of the race,1/3 of them dropped out. In the second half of the race,1

Verizon [17]

In the question, it is already given that the total number of runners in the race is 60 and out of them 1/3 dropped out in the first half. In the second half 1/4 of the remaining runners dropped out.
Now
Total number of runners in the race = 60
Number of runners that dropped out in the first half = 1/3 * 60
   = 20
Number of runners remaining = 60 - 20
   = 40
Number of runners dropping out in the second half = 40 * 1/4
   = 10
Then the number of runners that finished the race = 40 - 10
   = 30
Then 30 runners completed the race.

5 0

2 years ago

Read 2 more answers