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Flura [38]
3 years ago
15

Please help! this is a final! FUNCTIONS

Mathematics
1 answer:
Gnom [1K]3 years ago
3 0
The zeroes are -1/2 and -2
last option
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4. Raj and Saleem can type 20 and 40 words,
kondaur [170]

Answer:

Raj will take 10 minutes

explanation:-

Raj types 20 words per minute

Saleem types 40 words per minute

I. e speed and time are inversly proportional.

therefore, Raj will take twice the time Saleem takes.

Raj takes 2 * 5 = 10 minutes

3 0
2 years ago
PLEASE HELP I CANNOT DO THIS!!
Sladkaya [172]
<span>8x4-(2x3+8) divided by 2=25.</span>
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3 years ago
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Anuta_ua [19.1K]

Option A:

\left(x^{4}\right)\left(3 x^{3}-2\right)\left(4 x^{2}+5 x\right)=12 x^{9} +15 x^{8} -  8 x^{6}-10 x^{5}

Solution:

Given expression \left(x^{4}\right)\left(3 x^{3}-2\right)\left(4 x^{2}+5 x\right).

To find the product of the above expression:

\left(x^{4}\right)\left(3 x^{3}-2\right)\left(4 x^{2}+5 x\right)

First multiply first two factors with each term.

           =(x^{4} \times 3 x^{3}- x^{4} \times 2 ) \left(4 x^{2}+5 x\right)

Using exponent rule: a^m \cdot a^n=a^{m+n}

            =(3 x^{7}- 2x^{4} ) \left(4 x^{2}+5 x\right)

Now multiply these two factors with each term.

            =3 x^{7} (4 x^{2}+5 x)- 2x^{4} \left(4 x^{2}+5 x\right)

            =(4 x^{2} \times 3 x^{7} +5 x \times 3 x^{7} )-  \left(4 x^{2} \times 2x^{4}+5 x \times 2x^{4}\right)

Using exponent rule: a^m \cdot a^n=a^{m+n}

            =(12 x^{9} +15 x^{8} )-  (8 x^{6}+10 x^{5})

           =12 x^{9} +15 x^{8} -  8 x^{6}-10 x^{5}

\left(x^{4}\right)\left(3 x^{3}-2\right)\left(4 x^{2}+5 x\right)=12 x^{9} +15 x^{8} -  8 x^{6}-10 x^{5}

Hence option A is the correct answer.

4 0
3 years ago
Helen wants to buy round plates for her mother.the radius of plates is 1 foot. what is the plate's circumference?
Yuki888 [10]
The circumference is 6.28 because if u use the equation C=2piR. C=2pi1. 2(3.14)1. 6.28(1)= 6.28
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(HELP QUICK!! 50PTS &amp; BRAINLIEST!!!) Wilson middle school is selecting students to be the the spring festival show. There ar
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Answer:

The answer option is C 45

Step-by-step explanation:

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3 years ago
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