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3 years ago

Please help me with this problem!!! No Links!

Mathematics

2 answers:

vekshin13 years ago

7 0

The answer is 18

2 • 3^2 = ?
You do the exponent first. Remember PEMDAS
2 • 9 = ?
You will get 9 which leaves you with 2 • 9 which equals:
18

DerKrebs [107]3 years ago

4 0

The answer is 17! Hope it helps :)

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Ymorist [56]

Answer:

Step-by-step explanation:

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3 years ago

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A pack of 6 batteries of the same type costs £2.79. By caculating the price, per battery, determine if this is better value. You

Fittoniya [83]

Answer:

£0.465. It is a better value.

Step-by-step explanation:

If a pack of 6 batteries costs £2.79, price of a battery can be calculated as shown;

6batteries = £2.79

1 battery = x

x = cost of a battery

6x = £2.79

x = £2.79/6

x = £0.465

Price per battery will be £0.465. This price is a better value since the price is lesser than the cost of the 6batteries (£2.79) in a pack.

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4 years ago

X + y = 152,<br><br> 8.5x + 12y = 1,656<br><br> How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

$x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48$

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

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3 years ago

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jonny [76]

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3 years ago

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12345 [234]

Answer:

(-2,-3)=5

(0,3)=3

Step-by-step explanation:

(-2,-3)=

2+3

(0,3)=

0+3

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3 years ago