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4 years ago

Simplify: (4x2 − 8xy + 2y2) − (9x2 − 4xy − 7y2)

Mathematics

2 answers:

WINSTONCH [101]4 years ago

5 0

Answer:

−5x2 − 4xy + 9y2

Likurg_2 [28]4 years ago

4 0

I believe it is -4xy + 9y^2 - 10

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Nine identical cakes weigh a total of 20¼ pounds. How much does each cake weigh? Simplify.

KATRIN_1 [288]

Answer:

$2\frac{1}{4}$

Step-by-step explanation:

20 1/4 = 20.25

20.25/9 = 2.25

2.25 = $2\frac{1}{4}$

Each cake weighs 2.25 pounds.

4 0

3 years ago

Estimate then record the product 95×8

kap26 [50]

Estimate 95 to 90 and 8 to 10
now multiply 90 and 10 = 900

5 0

3 years ago

Read 2 more answers

A bag contains five yellow tickets numbered one to five. The bag also contains five green tickets numbered one to five. You rand

tamaranim1 [39]

The probability of picking a ticket that is green or has a number greater than four is 3/5

<h3>How to determine the probability?</h3>

The given parameters are:

Yellow = 1 - 5

Green = 1 - 5

Total = 10

There are 2 cards whose numbers are greater than 4 i.e. Yellow 5 and Green 5

So, we have:

P(Number greater than 4) = 2/10

There are 5 green cards.

So, we have:

P(Green) = 5/10

Also, 1 green card is numbered greater than 4

So, we have:

P(Green greater than 4) = 1/10

The required probability is:

P = P(Green) + P(Number greater than 4) - P(Green greater than 4)

This gives

P = 5/10 + 2/10 - 1/10

Evaluate

P = 6/10

Simplify

P =3/5

Hence, the probability of picking a ticket that is green or has a number greater than four is 3/5