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2 years ago

Sam worked 8.4 hours each day for 7 days. How many hours did he work altogether?

Mathematics

1 answer:

BartSMP [9]2 years ago

3 0

Answer:

58.8

Step-by-step explanation:

8.4 x 7= 58.8

you ould also think of it like 8x7.

then 4 x7 and then move the decimal right one to make it a smaller number

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Which of the following contains all of the irrational numbers in the set

horsena [70]

Answer:

Step-by-step explanation:

in ''d)'', all the numbers are irrational

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2 years ago

F(x)=4x-3<br> G(x)=x^3+2x<br> Find (f-g)(x)

dexar [7]

You gotta remember that $(f-g)(x)$ means $f(x) - g(x)$ .

So, in this case, f(x) is [4x - 3], g(x) is [x^3 + 2x].
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3 years ago

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sleet_krkn [62]

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4 years ago

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3 years ago

Read 2 more answers

E(5,3) and F (2,-1) are two vertices of a square EFGH and H is in the x-axis .Find the coordinates of H and G. Please need answe

timurjin [86]

Answer:

coordinates of H = (1, 0)

Coordinates of G = ( - 3.6, -2) or (5.6, -2)

Step-by-step explanation:

E(5,3) and F (2,-1) are two vertices of a square EFGH and H is in the x-axis.

Let the coordinates of H is (x, 0) and G is (a, b).

The length of side EF is

$EF = \sqrt{(5 -2)^2 + (3 +1)^2} = 5$

So,

$EH = \sqrt{(5 -x)^2 + (3 -0)^2} = 5\\\\(5 -x)^2+ 9 = 25\\\\5 - x = 4\\\\x = 1$

And

$GH = \sqrt{(a -x)^2+ b^2} = 5\\\\(a -1)^2+ b^2 = 25\\\\a^2 + b^2 + 1 - 2 a = 25\\\\a^2 + b^2 - 2a = 24 .... (1)$

Now

$FG = \sqrt{(a -2)^2+ (b +1)^2} = 5\\\\(a -2)^2+ (b+1)^2 = 25\\\\a^2 + b^2 + 2b - 2 a = 20\\ ..... (2)$

Solving (1) and (2)

b = - 2 ,

$a = \frac{2 \pm\sqrt{4 + 80}}{2}\\\\a = \frac{2 \pm 9.2}{2}\\\\a = - 3.6, 5.6$

3 0

3 years ago