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3 years ago

Which of these is equal to the value of 9-(-5)

Mathematics

2 answers:

AlekseyPX3 years ago

7 0

If it equals 45, then that's the answer

timama [110]3 years ago

5 0

Not sure if this helps but the minus sign and the negative sin will cancel each other out; so it will make both numbers positive. Then, you multiply them because of the parenthesis which would equal 45.

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Giving away another 100 better get there fast

kari74 [83]

GOT IT AGAIN THANKS

3 0

4 years ago

Read 2 more answers

What equation results from completing the square and then factoring? x^2+22x=31 A.(x+22)^2=53 B.(x+22)^2=152 C.(x+11)^2=152 D.(x

Paladinen [302]

Answer:

$\boxed{\mathrm{Option \ C}}$

Step-by-step explanation:

=> $x^2+22x = 31$

=> $(x)^2+2(x)(11) = 31$

Since b = 11 , So $(11)^2$ needs to be added to both sides

Adding $(11)^2$ to both sides

=> $(x)^2+2(x)(11)+(11)^2 = 31+(11)^2$

Completing the square

=> $(x+11)^2 = 31+121$

=> $(x+11)^2 = 152$

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3 years ago

What is the inverse of f(x)=3x-1

tatiyna

Answer:

$\frac{(y + 1)}{3}$

Step-by-step explanation:

Call $f(x) = y = 3x - 1$

Now, $y + 1 = 3x$

$\implies \frac{y + 1}{3} = x$

This is the inverse of the given function.

You can cross - verify it by substituting a point, say, $(1,3)$

We see that the point satisfies both the equations.

3 0

4 years ago

In a class of 30 students there are 17 girls. two students are picked randomly to represent the class in the SRC. determine the

Alla [95]

Answer:

See below in bold,.

Step-by-step explanation:

There are 30-17 = 13 boys in the class.

a. Prob(First is a boy ) = 13/30 and Prob( second is a boy = 12/29).

As these 2 events are independent:

Prob( 2 boys being picked) = 13/30 * 12/29 = 26/145 or 0.179 to the nearest thousandth.

b. By a similar method to a:

Prob ( 2 girls being picked) = 17/30 * 16/29 = 136/435 = 0.313 to the nearest thousandth.

c. Prob (First student is a boy and second is a girl) = 13/30 * 17/29 = 221/870.

Prob ( first student is a girl and second is a boy) = 17/30 * 13/29 = 221/870

These 2 events are not independent so they are added:

Prob( one of the students is a boy) = 2 (221/870 = 221/435 = 0.508 to the nearest thousandth.

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3 years ago

The price of limes is 6 for $1.90. Rashid expects to pay 95¢ for 4 limes.

lesya692 [45]

<span> C.<span>No, because each lime will cost a bit more than 30¢, so 4 limes will cost a bit more than $1.20.</span></span>

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3 years ago