3 years ago

The difference of 4 and W, write in an algebraic expression

Mathematics

1 answer:

irina [24]3 years ago

7 0

Hey i think you meant to add an attachment but it did not upload unless you mean
x=4-w

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If 25% of a number is 12, what is 75% of that number?

snow_tiger [21]

Answer:

Step-by-step explanation:

$\frac{0.25}{0.75} =\frac{12}{x} \\$

$0.75 *12=9$

$\frac{9}{0.25} =36$

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3 years ago

Solve the word problem. The height of a triangle with base b and area A is given by the formula h = 2A/B . What is the height

jeka94

$h = \frac{2A}{b} \ \ \ and\ \ \ A=26\ cm^2\ \ \ and\ \ \ b=8\ cm\\\\h= \frac{2\cdot26}{8} = \frac{2\cdot2\cdot13}{2\cdot2\cdot2} = \frac{13}{2} =6.5\ [cm]\\\\Ans.\ D$

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3 years ago

A shelf holds 3 novels, 2 biographies, and 1 history book. Two students in turns choose a book at random. What is the probabilit

Vinvika [58]

I'll do the first one:
Both novels.

Student 1 picks a novel. There are 3 novels out of 6 books total.

Now there are 5 books left.

Student 2 picks a novel. There are 2 novels out of 5 books since the other student took a novel.

To find the probability you would multiply the probability student 1 gets a novel and the probability student 2 gets a novel.

$\frac{3 Novels}{6 Books} x \frac{2 Novels}{5 Books} = \frac{6}{30} = \frac{1}{5}$

So the probability is 1/5. Or 20%

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3 years ago

How do you do this ?

jeka57 [31]

Answer: 3(x^2 + 4)/(x - 5)(x + 4)

Step-by-step explanation:

To simplify, begin with 3x^2 + 12 by dividing by 3 first: 3(x^2 + 4)

x^2 - x - 20 can be simplified into (x - 5) (x + 4). To find these terms, you have to figure out what two numbers multiply together to equal -20 but also add to -1.

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4 years ago

Kevin is 333 times as old as Daniel. 444 years ago, Kevin was 555 times as old as Daniel.

Taya2010 [7]

Answer: 24

Step-by-step explanation: yeah

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3 years ago