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3 years ago

Help pls i feel like i have the right answer but i wanna make sure

Mathematics

2 answers:

Sholpan [36]3 years ago

5 0

Answer:

-43

Step-by-step explanation:

Using PEMDAS and multiplying first gives you (-5 + 7) - 45

This gives you 2 - 45 which equals -43

pashok25 [27]3 years ago

4 0

-43 pemdas if you use the rules of pemdas you have the right answer

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3.491

Step-by-step explanation:

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3 years ago

HELP!!<br> what is the value of w?<br> A.40<br> B.52.5<br> C.75<br> D.100

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The angles w and 80 are inscribed angles in the top left and bottom right corners respectively. They are opposite angles in this inscribed quadrilateral. Because they are opposite angles in the inscribed quadrilateral, they add to 180 degrees.

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3 years ago

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3 years ago

Sarah had three times as many quarters as nickels. She had $3.20 in all. How many quarters did she have?

marin [14]

She have 12 quarters

<h3>what is unitary method?</h3>

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

There are two situation in Unitary method:

There are 5 ice-creams. 5 ice-creams cost $125.

Step 1: Let’s find the cost of 1 ice cream. In order to do that, divide the total cost of ice-creams by the total number of ice-creams. The cost of 1 ice-cream = Total cost of ice-creams/Total number of ice-creams = 125/5 = 25. Therefore, the cost of 1 ice cream is $25.

Step 2: To find the cost of 3 ice-creams, multiply the cost of 1 ice cream by the number of ice-creams. The cost of 3 ice-creams is cost of 1 ice-cream × number of ice-creams = 25 × 3 = $75. Finally, we have the cost of 3 ice-creams i.e. $75.

Given:

If she had 12 quarters, then

12 * .25 = $3 ( quarters)

4 * .05 = $.2 ( in nickels)

Hence, she have 12 quarters.

Learn more about unitary method here:

brainly.com/question/22056199

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2 years ago

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