3 years ago

What is the coefficient for x2 -5x+6

Mathematics

1 answer:

Tomtit [17]3 years ago

4 0

-5 because the variable is x and a coefficient comes before the variable.

Hope this helps!

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The equation p=100−5t represents the percent p of battery power remaining in a tablet after t hours.

puteri [66]

Answer:

Step-by-step explanation:If p=100% and t=20% than 5×20=100 because if you add 20 five different times you get 100.

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3 years ago

Which coefficient before hydrogen (H2) balances this chemical equation? N2 + __H2 2NH3 A. 2 B. 3 C. 4 D. 5

klio [65]

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Step-by-step explanation:

The answer to this question is 3

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3 years ago

A student wants to survey the sophomore class of 200 students about whether the school should require uniforms. A

Fittoniya [83]

Answer: C

Step-by-step explanation:

<u>Given:</u>

Sample size (n) = 50

x = 12

$\widehat{\mathbf{p}}=\frac{\mathbf{x}}{n}=\frac{12}{50}=0.24$

Confidence level = 90%

α = 1 − 0.90 = 0.10

α/2 = 0.05

$\text { Critical value }\left(z_{c}\right)=z_{\frac{\alpha}{2}}=z_{0.05}=1.6449$

(from standard normal table)

90% Confidence interval is,

$\begin{aligned}&\text { Confidence interval }=\widehat{\mathbf{p}} \pm z_{c} \times \sqrt{\frac{\hat{\mathbf{p}}(1-\hat{\mathbf{p}})}{n}} \\&\text { C. I }=0.24 \pm 1.6449 \times \sqrt{\frac{0.24(1-0.24)}{50}} \\&\text { C. I }=0.24 \pm 1.65 \times \sqrt{\frac{0.24(1-0.24)}{50}}\left\end{aligned}$