3 years ago

Evaluate f(−3) for f(x)=2x2−x+5.

Mathematics

1 answer:

Natasha2012 [34]3 years ago

7 0

Answer: -4

Step-by-step explanation:

2(-3)*2-(-3)+5= -4

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Plz plz plz help fast it’s graded

Paraphin [41]

Answer: 117 degrees

Step-by-step explanation:

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3 years ago

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Morgan has an 8-foot board that must be cut into boards that are feet long. How many of the smaller boards can he get from the 8

MrMuchimi

Just multiply all the eights

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3 years ago

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DESPERATELY NEED HELP

In-s [12.5K]

Remark

You must use the sin law to find this.

$\dfrac{Sin(75)}{22} = \dfrac{Sin(x)}{12}$

Multiply through by 12

12 * $\dfrac{Sin(75)}{22} = \dfrac{Sin(x)}{12}$ *12

$\dfrac{12*sin(75)}{22} = \text{sin(x)}$

0.5269 = sin(x)

Now you have to use the inverse of the sine function.

Use your calculator for that

2nd F

sin-1

(0.5269)

= 31.79 degrees. <<<<<< Answer.

There sometimes is a second answer. I don't think there is in this case.

3 0

3 years ago

RUDIKE [14]

$4680
Since 18% is 18/100 you just have to multiply the $842.4 by the reciprocal of that to find your answer
Reciprocal of 18/100 is 100/18
842.4* 100/18 equals 84240/18
84240/18 equals 4680

3 0

3 years ago

Mr. Chang wants to retire in 10 years. He deposits $650.00 every three months into his retirement investment account. If the acc

Fittoniya [83]

Answer:

Mr. Chang will have 15714.90 dollars.

Step-by-step explanation:

p = 650

r = $7.8/4/100=0.0195$

Number of periods or n = $5\times4=20$

Future value formula is : $p[\frac{(1+r)^{n}-1}{r} ]$

Putting the values in formula we get;

$650[\frac{(1+0.0195)^{20}-1}{0.0195} ]$

= $15714.90

Hence, Mr. Chang will have 15714.90 dollars.

5 0

3 years ago