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hram777 [196]
3 years ago
14

FCD=x+41, BCF=x+78, BCD=95. Find x

Mathematics
1 answer:
Lorico [155]3 years ago
5 0
You'll set the two expressions equal to 95.
So 2x+119=95
Then 2x=-24
Finally x=-12
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5.38*10^2 in standard notation
Montano1993 [528]
5.38*10^2
5.38*(10*10)
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3 years ago
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Rewrite the expression in the form y^n<br> (y^4)^2
julsineya [31]

Answer:

the answer is y^8

Step-by-step explanation:

(y^m)^n= y^mn

(y^4)^2= y^4x2= y^8

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3 years ago
Solve for x.<br> 144°<br> 18 degrees<br> 30 degrees<br> 48 degrees<br> 120 degrees
disa [49]

Answer:

<h2><u><em>x = 18 °</em></u></h2>

Step-by-step explanation:

you have a rotation angle of 360 °, take out the known values ​​(360 ° -90 ° -144 ° = 126), 144 ° is part of a flat angle of 180 °, from 180 ° remove 144 and you have 36 °, they are opposite angles therefore the same. therefore 360 ​​- 144 - 90 - 36 - 36 = 54.

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7 0
2 years ago
Estimating percents 19% of 72<br><br> Pleas explain how because I don’t understand this
jeka57 [31]

Answer:

13.68

Step-by-step explanation:

72 * 0.19 = 13.68

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For example

a fourth of something is the same as 25%.

if you want to find 1/4 of 8 you would multiply 8 by 1/4.

It is a similar concept with percentages.

5 0
1 year ago
Let a and b be real numbers satisfying a^3 - 3ab^2 = 47 and b^3 - 3a^2 b = 52. Find a^2 + b^2.
boyakko [2]

Answer: a²+b² = -99/2

Step-by-step explanation:

Since we are given two equations, this equations will be solved simultaneously to get a² and b²

a³ - 3ab² = 47 ... 1

b³ - 3a² b = 52... 2

From 1, a(a² - 3b²) = 47...3

From 2, b(b² - 3a²) = 52... 4

Adding 3 and 4, we have;

a²+b²-3b²-3a² = 99 (note that a and b will no longer be part of the equations as they have been factored out)

a²+b²-(3b²+3a²) = 99

(a²+b²) -3(b²+a²)= 99

Taking the difference we have

- 2(a²+b²) = 99

a²+b² = -99/2

8 0
3 years ago
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