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3 years ago

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Combine the following expressions.

%20-%20c%20%5Csqrt%7Bx%7D%20" id="TexFormula1" title="a \sqrt{x} + b \sqrt{y} - c \sqrt{x} " alt="a \sqrt{x} + b \sqrt{y} - c \sqrt{x} " align="absmiddle" class="latex-formula">

1 answer:

Sedbober [7]3 years ago

5 0

I hope this helps you

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Mr. Rr the Rreliable Rrobot has been programmed to whistle every $18$ seconds and do a jumping jack every $42$ seconds, starting

sveta [45]

Answer:

7 times during the first 15 minutes

Step-by-step explanation:

Remember that

$1\ min=60\ sec$

so

$15\ min=15(60)=900\ sec$

Decompose the numbers 18 and 42 in prime factors

we know that

$18=(2)(3^2)$

$42=(2)(3)(7)$

Find the least common multiple (LCM)

The LCM is

$(2)(3^2)(7)=126\ sec$

we need to find all multiples of 126 that are less than or equal 900.

$126*1=126\ sec\\126*2=252\ sec\\126*3=378\ sec\\126*4=504\ sec\\126*5=630\ sec\\126*6=756\ sec\\126*7=882\ sec$

therefore

7 times during the first 15 minutes

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3 years ago

mash [69]

Profits = 3.009(number of pizzas) - 77.131
Profits = 3.009(275) - 77.131 = 750.344

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3 years ago

A share of stocks gained 12 points, then lost 114 points, and then gained 218 points. Find the overall change in its value.

VLD [36.1K]

Answer:

The overall change is 116points gained

Step-by-step explanation:

Points gained = 12points

Points lost = 114points

Points gained = 218points

Unknown:

Overall change in its value = ?

Solution:

The overall change = Total points gained - Total points lost

= (218 + 12) - 114

= 116points

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3 years ago

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Solid circle over 3 line going left

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3 years ago

I need help plz help

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We know

$\boxed{\sf cos\Theta=\dfrac{b}{h}}$

$\\ \sf\longmapsto cos22=\dfrac{x}{47}$

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$\\ \sf\longmapsto x=47(0.9)$

$\\ \sf\longmapsto x=42.3$

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3 years ago