3 years ago

Help ! ASAP doing an exam

Mathematics

1 answer:

Alona [7]3 years ago

8 0

Answer:

ok ill explain if want after test

Step-by-step explanation:

angle 2 and 4 are 50

angle 1 and 3 are 130

angle 5 and 7 are 50

angle 8 and 5 are 130

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The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What mu

Svetradugi [14.3K]

From the last two facts, we get

$\dfrac{x_1+x_2+x_3}3=50\implies\dfrac{x_1+x_2+x_3}7=\dfrac{150}7$

$\dfrac{x_5+x_6+x_7}3=70\implies\dfrac{x_5+x_6+x_7}7=30$

Then

$\dfrac{x_1+x_2+\cdots+x_6+x_7}7=60\implies\dfrac{x_4}7=60-\dfrac{150}7-30\implies\boxed{x_4=60}$

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4 years ago

20 POINTS!!!

Sever21 [200]

Answer:

a) 54 m is your answer

Step-by-step explanation:

Given: s = 9

The formula given is:

P (Perimeter) = 6s

Plug in 9 for s

P = 6(9)

Multiply.

P = 6(9)

P = 54

a) 54 m is your answer

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4 years ago

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convert a 30% markup percent on cost to markup percent on selling price. (round to the nearest hundredth percent)

velikii [3]

40 percent i hope this helps

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4 years ago

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The price of a game that's been discounted<br> 18% off its list price (x)

Dmitry_Shevchenko [17]

Answer:

The price of a game is $0.82x$

Step-by-step explanation:

Let

x ----> the list price of a game

Remember that

$100\%-18\%=82\%=82/100=0.82$

To find out the price of a game that's been discounted 18% off its list price, multiply the list price by the number 0.82

$(x)(0.82)=0.82x$

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3 years ago

Is the equation y=-2x+5 in standard form?

ivann1987 [24]

Answer:

2x+y=5

Step-by-step explanation:

y=-2x+5

y-(-2x)=5

y+2x=5

2x+y=5

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4 years ago