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ycow [4]
3 years ago
7

I need help with this please. I already did this problem but I think I made a mistake can you please look it over?

Mathematics
1 answer:
ivann1987 [24]3 years ago
5 0

Answer:

it is corect

Step-by-step explanation:

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4 years ago
Which expression is equivalent to (x^2-3x)(4x^2+2x-9)
PolarNik [594]
For # 3 and 5 you need to use the quadratic formula: 
<span>(-b +/- srt(b^2 - 4ac))/2a </span>
<span>a, b, and c are representative of this formula: ax^2 +bx + c </span>

<span>1) 2x^2+3x-9=0 </span>
<span>(2x - 3)(x + 3) = 0 </span>
<span>2x - 3 = 0, x + 3 = 0 </span>
<span>+3 +3, -3 -3 </span>
<span>2x = 3, ***x = -3*** </span>
<span>/2 /2 </span>
<span>***x = 3/2*** </span>

<span>2) 5x^2+2x=0 </span>
<span>(x)(5x + 2) = 0 </span>
<span>5x +2 = 0, ***x = 0*** </span>
<span>-2 -2 </span>
<span>5x = -2 </span>
<span>/5 /5 </span>
<span>***x = -2/5*** </span>
<span>4) 4x^2+7x-2=0 </span>
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4 0
4 years ago
In a large population, about 10% of people do not like the taste of cilantro, an herb used in cooking. A researcher takes a rand
bogdanovich [222]

Answer:

0.0019390

Step-by-step explanation:

10% of people do not like the taste of cilantro

A researcher takes a random sample of 15 people and surveys whether they like cilantro

Use the binomial distribution to compute the probability that exactly 6 of the people in the sample do not like cilantro.

Probability of success = 0.10 = p

Probability of failure = 0.9 =q

n = 15

r = 6

Formula : P(X=r)=^nC_rp^r q^{n-r}

P(X=6)=^{15}C_6 (0.1)^6 (0.9)^{15-6}

P(X=6)=\frac{15!}{6!(15-6)!} (0.1)^6 (0.9)^{15-6}

P(X=6)=0.0019390

Hence  the probability that exactly 6 of the people in the sample do not like cilantro is 0.0019390

3 0
3 years ago
What is the scale factor of ARST to A UVW?<br><br> NEED HELP!
Neko [114]

Answer:

B:1

Step-by-step explanation:

the values are the same, so we know the scale is 1:1

hope this helps

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aleksandrvk [35]

Answer:

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Step-by-step explanation:

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3 years ago
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