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3 years ago

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Determine whether the following statement is true or false if it is false rewrite thousand true statement(Determine whether the

following statement is true or false if it is false rewrite thousand true statement (if two events are independent, P(A|B)=P(A)

1 answer:

SashulF [63]3 years ago

6 0

Answer: True

Step-by-step explanation:

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Joaquin can clean the house in 7 hours by himself. When joaquin and josiah work together it takes 3 hours. About how long would

True [87]

Joaquim Rate per hour = 1/7
Josiah Rate per hour = 1/t

1/7 + 1/x = 1/3
(same denominator & simplification) gives: t = 21/4 = 5.25 .
Josiah needs 5.25 hours to clean alone
(I really don't know why the answer is 5.3 . Can you pls check with the teacher?

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4 years ago

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Three ounces of cinnamon cost $2.40. If there are 16 ounces in 1 pound, how much does cinnamon cost per pound?

Veseljchak [2.6K]

Answer:

80¢\lb.; 58 667\1000 ft.\sec.

Step-by-step explanation:

Divide the cost by three; multiply 40 by 1.466675.

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3 years ago

Given that p=9i+12j and q=-6i-8j. Evaluate |p-q|-{|p|-|q|}

krok68 [10]

Answer:

$|p-q|-(|p|-|q|) = 20$

Step-by-step explanation:

First let's find the value of 'p-q':

$p - q = 9i + 12j - (-6i - 8j)\\p - q = 9i + 12j + 6i + 8j\\p - q = 15i + 20j\\$

To find |p-q| (module of 'p-q'), we can use the formula:

$|ai + bj| = \sqrt{a^{2}+b^{2}}$

Where 'a' is the coefficient of 'i' and 'b' is the coefficient of 'j'

So we have:

$|p - q| = |15i + 20j| = \sqrt{15^{2}+20^{2}} = 25$

Now, we need to find the module of p and the module of q: $|p| = |9i + 12j| = \sqrt{9^{2}+12^{2}} = 15$

$|q| = |-6i - 8j| = \sqrt{(-6)^{2}+(-8)^{2}} = 10$

Then, evaluating |p-q|-{|p|-|q|}, we have:

$|p-q|-(|p|-|q|) = 25 - (15 - 10) = 25 - 5 = 20$

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3 years ago

. Cecil is planting seeds in five large pots in his front yard. He has a total of 50 seeds. He put 14 seeds in the first pot and

rodikova [14]

The answer would be 7.

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3 years ago

What is the surface area of the rectangular prism?

olasank [31]

184cm2
8x5=40x2=80
4x5=20x2=40
8x4=32x2=64
80+40+64=184cm2

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3 years ago

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