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4 years ago

463.20 percentage increase by 20%

Mathematics

1 answer:

netineya [11]4 years ago

5 0

Answer:

555.84

Step-by-step explanation:

463.20 x 0.20=92.64

463.20+92.64=555.84

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Find the following:1) 30% of 90

irinina [24]

Answer:

Step-by-step explanation:

30/100 ×90 is 27.

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3 years ago

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5х + y = 16<br> х+ 6у = 38

Ainat [17]

Answer:

$(2,6)$

Step-by-step explanation:

Solve by substitution. Solve the second equation for x:

$x+6y=38\\\\x+6y-6y=38-6y\\\\x=38-6y$

Insert the value of x into the first equation:

$5(38-6y)+y=16$

Solve for y. Simplify multiplication using the distributive property:

$5(38)+5(-6y)+y=16\\\\190-30y+y=16\\\\190-29y=16$

Subtract 190 from both sides:

$190-190-29y=16-190\\\\-29y=-174$

Isolate the variable to find its value. Divide both sides by -29:

$\frac{-29y}{-29}=\frac{-174}{-29} \\\\y=6$

Now take the value of y and insert back into either equation to solve for x:

$5x+6=16$

Subtract 6 from both sides:

$5x+6-6=16-6\\\\5x=10$

Divide both sides by 5:

$\frac{5x}{5}=\frac{10}{5}\\\\ x=2$

Therefore, the solution to the system is $(2,6)$ .

:Done

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3 years ago

Find the sizes of unknow angles of this triangle

Volgvan

<h2><u>Answer:</u></h2>

To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.

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2 years ago

Multiplying or dividing both sides by a negative number changes the direction of an inequality

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If you multiply or divide both sides by a negative number it changes the direction of the inequality sign

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4 years ago

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Jolene bought a savings certificate that earned 2% in simple interest per year. She earned a total of $240 in interest over four

vovikov84 [41]

Answer:

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