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3 years ago

12

the ratio of the number of boys to the number of girls in a school is seventh to nine if there are 1240 students in the school h

ow many girls are there

1 answer:

Papessa [141]3 years ago

7 0

There are 137.7 girls. Divide 1240 by 9.

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A manufacturer knows that their items have a normally distributed length, with a mean of 10 inches, and standard deviation of 1.

kobusy [5.1K]

Answer:

0.0047

Step-by-step explanation:

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3 years ago

72 ounces for 12 servings

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I'm thinking the answer would be 6 because I divided 72 by 12.

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3 years ago

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The formula a = 118e0.024t models the population of a particular city, in thousands, t years after 1998. when will the populatio

andriy [413]

Given that the population has been modeled by the formula:
a=118e^(0.024t), the time taken for the population to hit 140k will be given by:
140000=118e^(0.024t)
solving for t we shall have:
140000/118=e^(0.024t)
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3 years ago

In the equation |x+8| = 3 the center number is -8. true or false

jenyasd209 [6]

Answer:

False the center number is a postive 8

Step-by-step explanation:

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2 years ago

Write the general polynomial p(x) if its only zeros are 1 4 and -3 with multiplicites 3 2 and 1 respectively what is the degree

kompoz [17]

Answer:

The 6th degree polynomial is $p(x) = (x-1)^3(x-4)^2(x+3)$

Step-by-step explanation:

Zeros of a function:

Given a polynomial f(x), this polynomial has roots $x_{1}, x_{2}, x_{n}$ such that it can be written as: $a(x - x_{1})*(x - x_{2})*...*(x-x_n)$ , in which a is the leading coefficient.

Zero 1 with multiplicity 3.

So

$p(x) = (x-1)^3$

Zero 4 with multiplicity 2.

Considering also the zero 1 with multiplicity 3.

$p(x) = (x-1)^3(x-4)^2$

Zero -3 with multiplicity 1:

Considering the previous zeros:

$p(x) = (x-1)^3(x-4)^2(x-(-3)) = (x-1)^3(x-4)^2(x+3)$

Degree is the multiplication of the multiplicities of the zeros. So

3*2*1 = 6

The 6th degree polynomial is $p(x) = (x-1)^3(x-4)^2(x+3)$

8 0

3 years ago