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3 years ago

Evaluate the function below for x = 3 F(x) = 2x2 - 4x +7

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

3 0

The answer is 7. So you would do
2(3)2=12
4(3)=12
12-12=0
0+7
7

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The graph of a polynomial function is shown here.

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Step-by-step explanation:

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3 years ago

Simplify 2 root 3 x 3 root 8

scZoUnD [109]

Answer:

Step-by-step explanation:

Given the expression;

2√3 * 3√√8

= (2*3) * (√3*√8)

= 6 * (√24)

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2 years ago

3/5 of one leap year

jonny [76]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia

vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic of the 99% confidence level (2.576)

s is the population IQ standard deviation (15)

N is the sample size (300)

Using these numbers we get:

ME= $\frac{2.576*15}{\sqrt{300} }$ ≈ 2.23

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3 years ago

An alloy is composed of nickel, zinc, and copper in a 7:2:9 ratio. How many kilograms of each metal is needed to make 3.8 kg of

Tamiku [17]

Ni : Zn: Cu = 7:2:9 =7x : 2x : 9x

7x+2x+9x = 3.8
18x=3.8
x=3.8/18=1.9/9≈0.21

Ni: 7x=7*0.21=1.47 ≈1.5 kg
Zn: 2x=2*0.21=0.42≈0.4 kg
Cu: 9x=9*0.21=1.89 ≈1.9 kg

Check 1.5+0.4+1.9 =3.8 True

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3 years ago