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2 years ago

Perform the indicated operation. -8 + (-4)

Mathematics

1 answer:

Lostsunrise [7]2 years ago

3 0

It is -12, negative + negative is Negative unless if its with a positive it will cancel out

ex, -12 + 6= -6

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Which equation represents a population of 370 animals that increases at an annual rate of 11% ?

Olegator [25]

The equation represents a population of 370 animals that increases at an annual rate of 11% is .

<h3>What is an exponential function?</h3>

It is defined as the function that rapidly increases and the value of the exponential function is always positive. It denotes with exponent y = a^x

where a is a constant and a>1.

Given that,

A population of 370 animals that increases at an annual rate of 11%

a = 370, r = 11%

$p=a(1+r)^{t}$

= $370(1+0.11)^{t}$

p = $370(1.11)^{t}$

Hence, The equation represents a population of 370 animals that increases at an annual rate of 11% is .

To learn more about exponential function from the given link:

brainly.com/question/24429075

#SPJ4

3 0

1 year ago

Give an example of a nonlinear function. You can describe this function in one or more of the following ways: with a table, grap

klio [65]

Answer:

y = x^2.

Step-by-step explanation:

This is nonlinear because, although it is a polynomial, its highest exponent is 2, not 1.

7 0

2 years ago

Write three numbers that when divided by 8 give a negative whole number answer.

abruzzese [7]

-8n where n > 0 and whole number (-8n/8=-n)

-8*1=-8

-8*8=-64

-8*9=-72

Answer:

-8, -64, -72

7 0

3 years ago

Read 2 more answers

A multiple-choice test contains 10 questions. There are four possible answers for each question. a) In how many ways can a stude

AnnZ [28]

Answer :

<h3> $4^{10}$ <u> =1048576 ways </u> a student can answer the questions on the test if the student answers every question.</h3>

Step-by-step explanation:

Given that a multiple-choice test contains 10 questions and there are 4 possible answers for each question.

∴ Answers=4 options for each question.

<h3>To find how many ways a student can answer the given questions on the test if the student answers every question :</h3>

Solving this by product rule

Product rule :

<u>If one event can occur in m ways and a second event occur in n ways, the number of ways of two events can occur in sequence is then m.n</u>

From the given the event of choosing the answer of each question having 4 options is given by

The 1st event of picking the answer of the 1st question=4 ,

2nd event of picking the answer of the 2nd question=4 ,

3rd event of picking the answer of the 3rd question=4

,....,

10th event of picking the answer of the 10th question=4.

It can be written as by using the product rule

$=4.4.4.4.4.4.4.4.4.4$

$=4^{10}$

$=1048576$

<h3>∴ there are 1048576 ways a student can answer the questions on the test if the student answers every question.</h3>

3 0

2 years ago

Find the value of x² - x+1 when x=√3 -1, in the form a+b√3 where a and b are integers

lidiya [134]

Answer:

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

Step-by-step explanation:

We are given $x=\sqrt{3}-1$ and we are asked to find the value of $x^2-x+1$ .

So we will need to find $x^2$ .

$x=\sqrt{3}-1$

Square both sides:

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

Expand using identity: $(x-a)^2=x^2-2ax+a^2$ .

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

$x^2=3-2\sqrt{3}+1$

$x^2=4-2\sqrt{3}$

Let's go back to the full $x^2-x+1$ .

$x^2-x+1$

$(4-2\sqrt{3})-(\sqrt{3}-1)+1$

$4-2\sqrt{3}-\sqrt{3}+1+1$

$6-3\sqrt{3}$

If you compare this to $a+b\sqrt{3}$ , then $a=6$ and $b=-3$ .

5 0

3 years ago