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3 years ago

Did I do it right? Making 227,900,000 a scientific notation ??

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

6 0

Yes, you did. Good job!

love history [14]3 years ago

5 0

That's how we were taught, so yes, it looks right to me.

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Three vertices of ▱ABCD are A(−3, 3), B(5, 9), C(6, 4). Find the coordinates of vertex D.

Veseljchak [2.6K]

The coordinates of vertex d is (-3, -4)

3 0

3 years ago

A binomial probability experiment is conducted with given parameters. Compute the probability of x successes in the n independen

snow_lady [41]

Answer:

P(X = 4) = 0.1876

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

In this question:

$n = 15, p = 0.2$

We want P(X = 4). So

$P(X = 4) = C_{15,4}.(0.2)^{4}.(0.8)^{11} = 0.1876$

7 0

3 years ago

3) Solve each equation using the quadratic formula. Show<br> a. x2 – 3x – 10 = 0

Naya [18.7K]

Answer:

Step-by-step explanation:

The quadratic formula of a quadratic equation

$ax^2+bx+c=0\\\\\text{If}\ b^2-4ac>0\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{If}\ b^2-4ac=0\ \text{then the equation has one solution}\ x=\dfrac{-b}{2a}$

$\text{If}\ b^2-4ac$

We have:

$x^2-3x-10=0\to a=1,\ b=-3,\ c=-10\\\\b^2-4ac=(-3)^2-4(1)(-10)=9+40=49>0\\\\x=\dfrac{-(-3)\pm\sqrt{49}}{2(1)}=\dfrac{3\pm7}{2}\\\\x=\dfrac{3-7}{2}=\dfrac{-4}{2}=-2\\or\\x=\dfrac{3+7}{2}=\dfrac{10}{2}=5$

5 0

3 years ago

If y = –0.96 when x = 2.4, what is y when x = 2.9?

Ksivusya [100]

Answer:

<u>It should be -1.16</u>

Step-by-step explanation:

Hope this helps :)

6 0

1 year ago

A plumber uses 16 inches of tubing to connect each washing machine in a install 18 washing machines. How many yards of turbing w

boyakko [2]

Answer:

228

Step-by-step explanation:

18x16

4 0

3 years ago