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Julli [10]
3 years ago
13

Bài 7. Biện luận theo tham số a hạng của các ma trận sau:

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0

Answer:A

Step-by-step explanation:A

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Leona [35]

Answer:

a) 5/8

b)6/7

Step-by-step explanation:

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The set of polynomials is ___ closed under multiplication.
MaRussiya [10]

Answer: always

Step-by-step explanation:

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Consider the expression. What is the result of applying the quotient of powers rule to the expression?
fenix001 [56]

Answer:

Let us consider the expression:

\frac{a^5\cdot b^6}{a^2\cdot b^9}     (1)

Now, the quotient of power rules says that the numbers that have same base can be find by subtracting if powers are with same sign

And adding if powers are with opposite sign.

We will solve equation (1) by this quotient of power rule.

So, it can be rewritten as:

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3 years ago
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The ratio of the number of apples to the number of pears in a basket was 3:5. After 7more apples were added to the basket and 9
atroni [7]

Answer:

Apples = 24

Pears = 40

Step-by-step explanation:

Let u be the unit of fruit in the basket,

number of apples: 3u +7

number of pears: 5u -9

now to find u, we equate the two equations.

3u+7=5u-9

Now simplify.

5u-3u=7+9

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Now we can find the original number of apples and pears by substituting u.

so original number of apples = 3u = 3(8) = 24

and original number of pears = 5u = 5(8) = 40

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3 years ago
If I subtract the square of one integer from the square of another, the difference could be
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Answer:

The answer is C

Step-by-step explanation:

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