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2 years ago

Which expression can be used to determine 50% of 42? 42-2 ,42÷2,42÷10,42-10

Mathematics

1 answer:

evablogger [386]2 years ago

3 0

Answer:

42÷2

Step-by-step explanation:

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Which statement is true about 1?

xeze [42]

Answer:

C. It is a whole number that is neither prime nor composite.

Step-by-step explanation:

A prime number is a number that has two factors: one and another number. Thus, since 1 only has one factor (itself), it cannot be a prime number.

However, a composite number must have more than two factors, which 1 doesn't have either.

Since 1 is a whole number (not a decimal or fraction), and it is neither prime nor composite, the answer would be C.

Have a nice day!

6 0

2 years ago

What are the coefficients for the binomial expansion of (a + b)^3?

sashaice [31]

Answer:

Required coefficient :coefficient of 1st, 2nd, 3rd and 4th term are 1, 3,3,1 respectively.

Explanation:

Formula for binomial expansion is $(a+b)^n=^nC_0\cdot a^n\cdot b^0+^nC_1\cdota^(n-1)\cdot b^1+------b^n$

We will substitute the values a=a, b=b and n=3 in the formula for binomial expansion we will get

$^3C_0\cdot a^3\cdot b^0+^3C_1\cdot a^2\cdot b^1+^3C_2\cdot a^1\cdot b^2+^3C_3\cdot a^0\cdot b^3$

After simplification of the terms we will get

$a^3+3\cdot a^2\cdot b+3\cdot a\cdot b^2+b^3$

Since, $^nC_r=\frac{n!}{(r!)(n-r)!}$

Therefore the required coefficient : coefficients of 1st, 2nd, 3rd and 4th term are 1, 3,3,1 respectively.

5 0

2 years ago

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Explain how you would graph the line containing a slope of –1/5 that goes through the point (1,–4).

Mekhanik [1.2K]

Answer:

Step-by-step explanation:

7 0

2 years ago

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If a rate is $56 per 7 hours is reduced to a unit rate, results is . do not include units in your answer

DiKsa [7]

You'd probably need to divide 56 by 7 which gives you 8

6 0

2 years ago

3x + y = 6<br> What is the answer in standard form

allsm [11]

Step-by-step explanation:

The standard of a linear equation is Ax +By = CAx +By =C. rewrite the equation with the slides flippy. 3x +6 = y3 x + 6= y

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6 0

2 years ago

Which expression can be used to determine 50% of 42? 42-2 ,42÷2,42÷10,42-10​

Which expression can be used to determine 50% of 42? 42-2 ,42÷2,42÷10,42-10