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2 years ago

Evaluate the expression for the given variable 4y-12, when y =7

Mathematics

1 answer:

Fed [463]2 years ago

6 0

Answer:

Step-by-step explanation:

y = 7

4(7)-12

28-12 = 16

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A square postage stamp has area 1240 mm^2 about how long is each side?

Shtirlitz [24]

Sq.root of 1240 is approx 35 mm

6 0

2 years ago

Use the identity (x2+y2)2=(x2−y2)2+(2xy)2 to determine the sum of the squares of two numbers if the difference of the squares of

fomenos

Answer:

The sum of the squares of two numbers whose difference of the squares of the numbers is 5 and the product of the numbers is 6 is <u>169</u>

Step-by-step explanation:

Given : the difference of the squares of the numbers is 5 and the product of the numbers is 6.

We have to find the sum of the squares of two numbers whose difference and product is given using given identity,

$(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2$

Since, given the difference of the squares of the numbers is 5 that is $(x^2-y^2)^2=5$

And the product of the numbers is 6 that is $xy=6$

Using identity, we have,

$(x^2+y^2)^2=(x^2-y^2)^2+(2xy)^2$

Substitute, we have,

$(x^2+y^2)^2=(5)^2+(2(6))^2$

Simplify, we have,

$(x^2+y^2)^2=25+144$

$(x^2+y^2)^2=169$

Thus, the sum of the squares of two numbers whose difference of the squares of the numbers is 5 and the product of the numbers is 6 is 169

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2 years ago

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A. 45:75<br> Simply the ratio

Ronch [10]

<h2>Answer:</h2><h2>3:5</h2><h2 /><h2>Hope this helps!!</h2>

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2 years ago

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I'm doing theoretical probobility. Can you help me with this problem. It says to write it is a fraction, decimal, and a percent.

Alchen [17]

So probability is (disred outcomes) divided by (total possible outomces

so
hearts and clubs are 2 out of 4 total suits and since there are the same number of cards per suit, it simplifies
2=desrired oucomes
4=total possible
2/4=1/2=0.5=50%

answer is 1/2 or 0.5 or 50%

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2 years ago

Juanita has a bag of mixed nuts.her bag contains 27 cashews, 45 almonds and 18 peanuts. What is the ratio of cashews to almonds

Afina-wow [57]

Cashews to almonds
27:45
Reduce by dividing by 9:
3:5

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3 years ago

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