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3 years ago

What is a coefficient? Give me an example.

Mathematics

1 answer:

aksik [14]3 years ago

7 0

Answer:

A coefficient is the number next to a letter. It's used to multiply a variable. If there is just a variable then the coefficient is 1. For example 6x.

Step-by-step explanation:

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-12 and 18

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3 years ago

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Calculate an estimate of a square root of 119 + 120i

uysha [10]

Answer:

Step-by-step explanation:

Given

z=119+120 i

Let $\sqrt{119+120 i}=p+iq$

Squaring both sides

$119+120 i=p^2-q^2+2ipq$

Comparing real and imaginary part

Re(LHS)=Re(RHS)

$119=p^2-q^2$ -----------1

comparing Im(LHS)=Im(RHS)

120=2pq

$q=\frac{60}{p}$

Substitute q in 1

$119=p^2-(\frac{60}{p})^2$

$p^4-119p^2-(68)^2=0$

Let $x=p^2$

$x^2-119x-4624=0$

$x=frac{119\pm \sqrt{119^2+4\times 4624}}{2}$

$x=\frac{119\pm 180.71}{2}$

we take only Positive value because $p^2=x$

x=149.85

$p^2=149.85$

thus $p=\pm 12.24$

$q=\mp 4.90$

thus $\sqrt{119+120 i}=\pm (12.24+i 4.90)$

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4 years ago

HELP ASAP!!!!!! Please

MissTica

1. Distributive property, because you are "distributing" the 5 across the parentheses.

2. Since we know that 5/10 is 0.5, this term must be close to that. 5/9 is about 0.55555, therefore, I'd go with 5/9 = 0.55

Hope I could help!

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3 years ago

Suppose that the probability a seed will germinate is 80%. What is the probability that 7 of these seeds will germinate when 10

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Your answer will be letter B

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dezoksy [38]

Divide 56.5 by 2 and c what u get

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