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2 years ago

6

Which statement is true about the relationship between the amount of plant food remaining and the number of days? Can you help m

e with this problem

2 answers:

rodikova [14]2 years ago

6 0

Answer:

Step-by-step explanation:

Olenka [21]2 years ago

4 0

There is nothing listed for me to answer

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A lab technician is tested for her consistency by making multiple measurements of the cholesterol level in one blood sample. The

Zanzabum

Step-by-step explanation:

Given precision is a standard deviation of s=1.8, n=12, target precision is a standard deviation of σ=1.2

The test hypothesis is

H_o:σ <=1.2

Ha:σ > 1.2

The test statistic is

chi square = $\frac{(n-1)s^2}{\sigma^2}$

= $\frac{(12-1)1.8^2}{1.2^2}$

=24.75

Given a=0.01, the critical value is chi square(with a=0.01, d_f=n-1=11)= 3.05 (check chi square table)

Since 24.75 > 3.05, we reject H_o.

So, we can conclude that her standard deviation is greater than the target.

5 0

2 years ago

The total cost of renting a car is $35.00 for each day the car is rented plus 37.5 cents for each mile the car is driven. what i

charle [14.2K]

X = days rented and y = miles driven
4 days rented and 300 miles driven

35x + .375y = total cost

35(4) + .375(300)
140 + 112.5

Total cost = $252.50

6 0

1 year ago

The graph shows the relationship between liters and gallons

polet [3.4K]

It does?

Huh

Neat

We can't see it though

4 0

1 year ago

What type of number is -296.2i?

posledela

It's definitely a complex number so choose C. Complex numbers are imaginary number because they aren't real so I'm not sure about B. It might not be PURE imaginary

4 0

2 years ago

Drag each tile to the correct box. Not all tiles will be used. Consider the expression below. Place the steps required to determ

Alik [6]

Answer:

$\frac{3x+6}{x^{2}-x-6 } +\frac{2x}{x^{2} +x-12}=\frac{5x+12}{x^{2} +x-12}$

Step-by-step explanation:

The given expression is

$\frac{3x+6}{x^{2}-x-6 } +\frac{2x}{x^{2} +x-12}$

First, we need to factor each part of the expression

$\frac{3(x+2)}{(x+2)(x-3)} +\frac{2x}{(x-3)(x+4)}$

Remember that quadractic expression are factored in two binomial factors. The first quadratic expression factors are about two numbers which product is 6 and which difference is one. The second quadratic expression is about two numbers which product is 12 and which difference is 1.

Now, we simplify equal expression at each fraction.

$\frac{3}{(x-3)} +\frac{2x}{(x-3)(x+4)}$

Then, we use the least common factor about the denominators to sum those fractions. In this case, the least common factor is $(x-3)(x+4)$ , because those are the factors present in the denominators.

Now, we divide each fraction by the least common factor, and then multiply the numeratos by its result.

$\frac{3(x+4)+2x}{(x-3)(x+4)}$

Finally, we multiply all products and sum like terms.

$\frac{3x+12+2x}{x^{2} +4x-3x-12}=\frac{5x+12}{x^{2} +x-12}$

Therefore, the sum of the initial expression is equal to

$\frac{5x+12}{x^{2} +x-12}$

7 0

1 year ago