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3 years ago

13

Write the inequality for the following: You have $25 to spend. You are going to spend $10 on a shirt and then purchase earrings

for $3 a pair. How many pairs of earrings can you purchase?

1 answer:

ArbitrLikvidat [17]3 years ago

3 0

She purchased five pairs of earrings

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Subtract the rational expression 1/x^2-x-6 - x/x+2.

Aleksandr [31]

Answer:

Step-by-step explanation:

x² - x -6 = x² + 2x - 3x - 3*2

=x(x + 2) - 3(x + 2)

= (x + 2 )(x - 3)

$\frac{1}{x^{2}-x-6}+\frac{x}{x+2}=\frac{1}{(x +2 )(x - 3)}-\frac{x}{x + 2}\\$

$= \frac{1}{(x+2)(x-3)}-\frac{x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x^{2}+3x}{(x+2)(x-3)}\\\\$

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2 years ago

2. You have $500 to invest and have several options available to you.p a. Your banker shows you the graph at right to explain wh

Vaselesa [24]

Answer:

replace x with number then multiply or divide

Step-by-step explanation:

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3 years ago

Suppose your friend's parents invest $15,000 in an account paying 5% compounded annually. What will the balance be after 10 ye

Bad White [126]

Answer:

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3 years ago

(CO 4) In a sample of 8 high school students, they spent an average of 24.8 hours each week doing sports with a sample standard

AveGali [126]

Answer:

(22.12, 27.48)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.95=0.05$

Sample size : n= 8 , which is a small sample (n<30), so we use t-test.

Critical values using t-distribution: $t_{n-1,\alpha/2}=t_{7,0.025}=2.365$

Sample mean : $\overline{x}=24.8\text{ hours}$

Standard deviation : $\sigma=3.2\text{ hours}$

The confidence interval for population means is given by :-

$\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $24.8\pm(2.365)\dfrac{3.2}{\sqrt{8}}$

$24.8\pm2.67569206001\\\\\approx24.8\pm2.68\\\\=(24.8-2.68, 24.8+2.68)=(22.12, 27.48)$

Hence, the 95% confidence interval, assuming the times are normally distributed.= (22.12, 27.48)

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3 years ago

Answer this please

kati45 [8]

Answer5 times 6=30 divide bc its a triangle the answer is 15

Step-by-step explanation:

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3 years ago