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AVprozaik [17]
3 years ago
14

an experiment is done to see the health effect of large amounts of asprin on rats. each rat gets 22 grams of asprin. if 60 rats

are used in the expriment how mant grams of asprin will be used
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
7 0
Just multiply 60 × 22 (since each single rat needs 22 grams of aspirin)

60 × 22 = <u><em>1320 grams total</em></u>
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There is concern that increased industrialization may be increasing the mineral content of river water. Ten years ago, the silic
Tema [17]

Answer:

a) P value = 0.0013

b) No, it is not plausible that the silicon content of the water is no greater than it was 10 years ago

Step-by-step explanation:

The null hypothesis here is “Mean is equal to 5” while alternate hypothesis is that “Mean is greater than 5”

Given  

Mean = 5, x’ = 5.4 and sigma = 1.2 and n = 85

Z = x-u’/sigma/sqrt n

Substituting the given values, we get –  

Z = 3.02

A) P value = 0.0013 which is less than 0.05 and thus we will reject the null hypothesis

B) There is enough evidence to reject the null hypothesis  

6 0
3 years ago
Is the following statement a good definition? Why? An obtuse angle is an angle whose measure is greater than 90°.
Virty [35]

180° measures more than 90°, so according to the given statement, a plane angle is also an obtuse angle, and that is incorrect. From that, we conclude that the statement is not a good definition.

<h3>Is the following statement a good definition? </h3>

The given statement is:

"An obtuse angle is an angle whose measure is greater than 90°."

This is the common, but incorrect, definition for obtuse angles.

We know that an angle that measures 180° is called a plane angle and by definition, a plane angle is not an obtuse angle.

And the angles larger than 180° (and smaller than 360°) are the reflex angles.

Now, 180° measures more than 90°, so according to the given statement, a plane angle is also an obtuse angle, and that is incorrect. From that, we conclude that the statement is not a good definition.

If you want to learn more about obtuse angles:

brainly.com/question/5023725

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8 0
1 year ago
Find the polynomial function in standard form that has the zeros listed. i and -i
fgiga [73]

The polynomial function in standard form that has the zeros listed. i and -i is  x² +1 = 0.

<h3>What is polynomial function?</h3>

A quadratic, cubic, quartic, and other functions involving only non-negative integer powers of x are examples of polynomial functions.

The values of x that fulfil the formula f(x) = 0 are the zeros of a polynomial. The polynomial's zeros are the x values for which the function's value, f(x), equals zero in this case. The degree of the equation f(x) = 0 determines how many zeros a polynomial has.

Calculation for the polynomial function-

The general two degree/quadratic equation is given by-

ax² + bx + c = 0

Where a ≠ 0

If the two roots of the equation are x1 and x2.

Then the relation between roots and coefficients of the polynomial are -

  • The sum of the roots = (- coefficient of x)/(coefficient of x²)

         x1 + x2 = (-b)/a

  • The multiplication of the roots = constant/coefficient of x²

        x1.x2 = c/a

From the above two relation the general equation can be written as-

x² -(x1 - x2)x + x1.x2 = 0

Lets say x1 = i and x2 = -i

Substitute the values of x1 and x2 in the general equation

x² -(i - i)x + (i).(-i) = 0

x² - i ² = 0

x² + 1 = 0

Therefore, the polynomial function in standard form that has the zeros listed. i and -i is x² + 1 = 0.

To know more about Polynomial Function, here

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7 0
1 year ago
Cassie is traveling 675 miles today to visit her brother and his family. So far, she has stopped for gas three times. At the fir
aleksandrvk [35]

Answer: She paid the most for the gas in the first stop ($3.35 per gallon).


Step-by-step explanation:

1. At the first stop she put in 7.1 gallons of gas and paid $23.79, so she paid:

$23.79/7.1 gallons=$3.35 per gallon.

2.  At her second stop she put in 5.8 gallons of gas and paid $19.08, then the price per gallon was:

$19.08/5.8 gallons= $3.28 per gallon.

3. At the third stop she put 6.6 gallons and paid $20.39, then:

$20.39/6.6 gallons=$3.08 per gallon.

4. Then, you can conclude she paid the most for the gas in the first stop ($3.35 per gallon).


8 0
3 years ago
1. Find the measure of each of the following angles in the rhombus
balu736 [363]

Answer:

it will be 44 degree because all angles in rhombus are equal

8 0
2 years ago
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