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3 years ago

What is the slope of the line perpendicular to the graph of 3x + 4y = 12?

Mathematics

1 answer:

WINSTONCH [101]3 years ago

7 0

Answer:

${ \tt{slope = \frac{1}{3} }}$

Step-by-step explanation:

${ \tt{m _{1} \times m _{2} = - 1}} \\ { \tt{ - 3 \times m _{2} = - 1}} \\ { \tt{m _{2} = \frac{1}{3} }}$

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A tank that is 30% full contains 651 gallons of water. How much water does the tank hold when it is full?

Andreas93 [3]

last one 2170

Answer:

651=30 percent

x=100 percent

x=( 100×651)/30=2170 gallons

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2 years ago

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What shape is your field of vision?

Nat2105 [25]

The shape of my field is an oval

It's oval rather than round because I have two eyes, and each has a separate field like the one pictured here. Putting them together creates an oval. So if you wanted to represent what I can see, you would take a wide-angle photo from my vantage point and cut out a roughly oval shape

Therefore, the shape of my field is an oval

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2 years ago

In a certain country, the true probability of a baby being a girl is 0.469. Among the next seven randomly selected births in th

-BARSIC- [3]

Answer:

The probability is 0.995 ( approx ).

Step-by-step explanation:

Let X represents the event of baby girl,

The probability of a baby being a girl is, p = 0.469,

So, the probability of a baby who is not a girl is, q = 1 - 0.469 = 0.531,

Also, the total number of experiment, n = 7

Thus, by the binomial distribution formula,

$P(x)=^nC_x(p)^x q^{n-x}$

Where, $^nC_x=\frac{n!}{x!(n-x)!}$

The probability that all babies are girl or there is no baby boy,

$P(X=7)=^7C_7(0.469)^7(0.531)^{7-7}$

$=0.00499125661758$

Hence, the probability that at least one of them is a boy = 1 - P(X=7)

= 1 - 0.00499125661758

= 0.995008743382

≈ 0.995

8 0

3 years ago

If R=4. Which is the correct answer if R is substituted into R+9

lora16 [44]

The answer is 13

If R=4 the the equation would be 4+9 which equals 13.

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4 years ago

Last two!!(ty for all the help) :

malfutka [58]

With the b2+b- 12 your gonna want to do this
b2+b-12
b2+4b-3b-12
which is the sum product
after doing that you wanna common the factors from the two pairs. Which is b2+4b-3b-12 then you do you parentheses around b(b+4)-3(b+4) just like that after you do that then you rewrite it in factored form b(b+4)-3(b+4) you then want to rewrite it to this (b-3)(b+4) after that your solution will be (b-3)(b+4) for the first one.

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2 years ago

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