3 years ago

Please need some help on this

Mathematics

1 answer:

vredina [299]3 years ago

8 0

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A sixth grade student bought three cans of tennis balls for $4 each. Sales tax for all three cans with $0.95. Write an expressio

Murrr4er [49]

F(x) = 4x + 0.95

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4 0

3 years ago

Com uma lata de tinta dá para pintar 10 m² de parede. Quantas latas serão necessárias para pintar uma parede de 5m de largura po

Crank

Answer:

b. 2 cans of ink

Step-by-step explanation:

In order to calculate the number of cans you need to paint the complete wall, you first calculate the area of the wall by using the information about its width and height:

$A=(5m)(2,5m)=12.5m^2$

With one can you can paint 10m^2 of wall, with two cans you can paint 20m^2, which is enough to paint the wall of 12.5m^2.

Then, you need only two cans of ink

b. 2

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4 years ago

What is 10% of 80 anwser soon

Elena-2011 [213]

The correct answer is 8
10% of 80 is 8

Hope this helped :)

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4 years ago

Read 2 more answers

F (x)=x2 +14×+40. f(x) =

bekas [8.4K]

Hello There

Answer: (See attached picture)

Reason:

To solve this we simply replace F with x^2 and simplify

I hope I helped
-Chris

7 0

4 years ago

Read 2 more answers

If a = 6, −9, 3 , then what is 4a?

ohaa [14]

Answer:

Option 2.

Step-by-step explanation:

It is given that

a = <6,-9,3>

We need to compare the maginitude of vertor a and vector 4a.

If a vector is defined as v = <x,y,z>, then its magnitude is defined as

$|v|=\sqrt{x^2+y^2+z^2}$

Using the above formula we get

$|a|=\sqrt{6^2+(-9)^2+(3)^2}$

$|a|=\sqrt{126}$

$|a|=\sqrt{9\times 14}$

$|a|=3\sqrt{14}$

The vector 4a is

$4a==$

$|4a|=\sqrt{(24)^2+(-36)^2+(12)^2}$

$|4a|=\sqrt{4^2(6^2+(-9)^2+(3)^2)}$

$|4a|=4\sqrt{6^2+(-9)^2+(3)^2}$

$|4a|=4|a|$

The magnitude of 4a is a factor of 4 greater than the magnitude of a.

Therefore, the correct option is 2.

7 0

4 years ago