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3 years ago

Please factor this trinomial and explain

Mathematics

1 answer:

saveliy_v [14]3 years ago

7 0

I can't see it but I would love to help

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Help! Click all that apply . Please actually try :(

Alexxandr [17]

Answer:

OK, i'm trying my best...It looks like rotation, translation, dilation!

Step-by-step explanation:

Im so sorry if not correct!

5 0

4 years ago

What do you think the answer is?

Katen [24]

Answer:

i think the answer is c

Step-by-step explanation:

7 0

3 years ago

On an electricity bill of $40.80, Mrs.

Natalka [10]

Answer:

100%_$40.80

? × _$38.76

Step-by-step explanation:

100%×$38.76÷$40.80=95%

8 0

3 years ago

Read 2 more answers

Raj bought a pair of basketball shoes for $70 the sales tax on the shoes was $5.60 what represents the sales tax rate

Semenov [28]

Hello!

You divide how much tax was by the total cost of the shoes

5.60 / 70 = 0.08

Convert the decimal into a percent

The answer is 8%

Hope this helps!

6 0

4 years ago

Let x ∼ bin(9, 0.4). find

Kobotan [32]

A.
$\mathbb P(X>6)=\mathbb P(X=7)+\mathbb P(X=8)+\mathbb P(X=9)$
$=\dbinom97(0.4)^7(1-0.4)^{9-7}+\dbinom98(0.4)^8(1-0.4)^{9-8}+\dbinom99(0.4)^9(1-0.4)^{9-9}$
$\approx0.025$

b.
$\mathbb P(X\ge2)=1-\mathbb P(X$
$=1-\dbinom90(0.4)^0(1-0.4)^{9-0}-\dbinom91(0.4)^1(1-0.4)^{9-1}$
$\approx0.929$

c.
$\mathbb P(2\le X$
$=\dbinom92(0.4)^2(1-0.4)^{9-2}+\dbinom93(0.4)^3(1-0.4)^{9-3}+\dbinom94(0.4)^4(1-0.4)^{9-4}$
$\approx0.663$

d.
$\mathbb P(2$
$=\dbinom93(0.4)^3(1-0.4)^{9-3}+\dbinom94(0.4)^4(1-0.4)^{9-4}+\dbinom95(0.4)^5(1-0.4)^{9-5}$
$\approx0.669$

e.
$\mathbb P(X=0)=\dbinom90(0.4)^0(1-0.4)^{9-0}\approx0.01$

f.
$\mathbb P(X=7)=\dbinom97(0.4)^7(1-0.4)^{9-7}\approx0.021$

g, h.
For $X\sim\mathcal B(n,p)$ , recall that $\mathbb 
E[X]=\mu_X=np$ and $\mathbb V[X]={\sigma_X}^2=np(1-p)$ . So

$\mu_X=9(0.4)=3.6$
${\sigma_X}^2=9(0.4)(0.6)=2.16$

6 0

4 years ago