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3 years ago

8

Ten thousand times the sum of a number and seven hundred

1 answer:

Vera_Pavlovna [14]3 years ago

5 0

Let x be the unknown number.

The sum of x and seven hundred is $x+700$

Ten thousand times this sum is $10000(x+700)$

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A man has mislaid his wallet. He thinks there is a 0.4 chance that the wallet is somewhere in his bedroom, a 0.1 chance it is in

lana [24]

Answer:

a. Probability = 0.15

b. Probability = 0.3

Step-by-step explanation:

Given

$P(Bedroom) = 0.4$

$P(Kitchen) = 0.1$

$P(Bathroom) = 0.2$

$P(Living\ room) = 0.15$

Solving (a): Probability of being somewhere else

This is calculated by subtracting the sum of given probabilities from 1.

$Probability = 1 - (0.4 + 0.1 + 0.2 + 0.15)$

$Probability = 1 - 0.85$

$Probability = 0.15$

Solving (b): Probability of being in bedroom or kitchen

This is calculated as:

$Probability = P(Bedroom) + P(Kitchen)$

$Probability = 0.2 + 0.1$

$Probability = 0.3$

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2 years ago

Sally did some counting look at her work explain why you think sally counted this way 177,178,179,180,190,200,220,211,212,213,21

dimulka [17.4K]

<span>The first and last four numbers each have a difference of one between them. The fifth number has a difference of 10 between it and the previous number. The middle number has a difference of 20 between itself and the two numbers that surround it. Counting in this way could have been a result of a lot of things to count, and spot checking along the way (when the numbers have a difference of 1).</span>

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3 years ago

An experiment consisting of 35 mice is set up to study the weight of mice after injecting them with a drug. If the population me

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See the attachment Hope it helps :-)

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3 years ago

Which of the following sets of ordered pairs represents a function?

MrRissso [65]

Answer:

the correct answer is A

Step-by-step explanation:

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2 years ago

Evaluate the function f(x)=x^2+2x+3 at the given values of the independent variable and simplivy

tatyana61 [14]

Answer: i) f(-9)= 66

ii) $f(x+1)=x^2+4x+6$ .

iii) $f(-x)=x^2-2x+3$

Step-by-step explanation:

The given function : $f(x)=x^2+2x+3$ .

i) For f(-9) , the independent variable is x= -9.

Put x= -9 in given function , we get

$f(-9)=(-9)^2+2(-9)+3$

$=81-18+3=66$

Thus , f(-9)= 66

ii) For f(x+1) , the independent variable is x= x+1.

Replace x by x+1 in given function , we get

$f(x+1)=(x+1)^2+2(x+1)+3$ .

$=(x^2+1+2x)+2x+2+3$ $[\because\ (a+b)^2=(a^2+b^2+2ab)]$

$=x^2+1+2x+2x+5$

$=x^2+4x+6$

Thus , $f(x+1)=x^2+4x+6$ .

iii)For f(-x) , the independent variable is x=-x.

Replace x by -x in given function , we get

$f(-x)=(-x)^2+2(-x)+3$ .

$=x^2-2x+3$ [∵ (+)(-)=(-)]

Thus , $f(-x)=x^2-2x+3$

8 0

2 years ago