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olganol [36]
3 years ago
14

Simplify 3√20/√5 a)25/4 b)6 c)√5/5 d2√3/15

Mathematics
1 answer:
Blizzard [7]3 years ago
3 0
<span>3√20/√5
= </span>3 √4 √5<span> / √5
= 3 * 2
= 6

answer is </span><span>b)6</span>
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Really confused by this, all help appreciated
Fofino [41]

Answer:

is there answer choices

Step-by-step explanation:

6 0
3 years ago
Solve each system using substitution:<br> 1. 4x - 5y= -15<br> y= -3x + 22
Bumek [7]
4x - 5y = -15
y = -3x + 22

Plug in your y= equation into the y variable in the other equation

  4x - 5 (y) = -15
            ^^
y = (-3x + 22) = -15

4x - 5 (-3x + 22) = -15

Distribute

4x + 15x - 110 = -15

Combine like terms and add 110 over to -15

19x = 95

Then, divide the whole equation by 19

x = 5

Then, plug in your x into your y= equation

y = -3 (5) + 22
y = -15 + 22
y = 7

<em><u>x = 5</u></em>
<em><u>y = 7</u></em>
<em><u>(5, 7)</u></em>
3 0
3 years ago
The volume of the rectangular prism is 18 cubic feet more than the volume of the right triangular prism. Find the volume of each
zvonat [6]

Volume of rectangular prism = length * width * height

Volume of triangular prism =( length * height * base )/2

Given,

Volume of rectangular prism  = 18 + volume of triangular prism

6*x*3 = 18 + \frac{7*x*4}{2}

18x = 18+14x

4x=18

x= 4.5 ft

So volume of rectangular prism = 6* 4.5* 3 = 81 ft³

Volume of triangular prism = (7* 4.5 * 4) / 2 = 63 ft³

5 0
3 years ago
What needs to happen for the equation CH4 + O2 → CO2 + H2O to be balanced?
ludmilkaskok [199]
The answer is B.
in the original equation, CH4 + O2 → CO2 + H2O, there are:

REACTANTS: 2 carbon, 4 hydrogen, 2 oxygen
PRODUCTS: 2 carbon, 2 hydrogen and 1 oxygen.

If we change the equation to this,
CH4 + 2O2 → CO2 + 2H2O, then there are now:

REACTANTS: 2 carbon, 4 hydrogen, 4 oxygen
PRODUCTS: 2 carbon, 4 hydrogen, 4 oxygen
and thus the equation is balanced
8 0
3 years ago
From 27 pieces of luggage, an airline luggage handler damages a random sample of four. The probability that exactly one of the d
dusya [7]

Answer:

0.273

Step-by-step explanation:

Let the number of insured pieces of luggage be <em>i</em> and <em>u</em> be the number of uninsured pieces of luggage, therefore,

<em>i </em>+ <em>u </em> = 27

Now,

probability that exactly one of the damaged pieces of luggage is insured = (iC1)(uC3)/(27C4)

probability that none of the damaged pieces are insured = (uC4)/(27C4)

and,

(iC1)(uC3)/(27C4) = 2 (uC4)/(27C4)

=> <em>u − </em>2<em>i </em>= 3

By solving, <em>i </em>+ <em>u </em> = 27 and  <em>u − </em>2<em>i </em>= 3

<em>i</em> = 8 and <em>u</em> = 19

and,

(8C2)(19C2)/(27C4) = 0.273

3 0
3 years ago
Read 2 more answers
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