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neonofarm [45]
3 years ago
8

What is -2 and 1/2 as a decimal​

Mathematics
2 answers:
disa [49]3 years ago
8 0
(-2.5) i think thats what ur looking for. if not, sorry!
olganol [36]3 years ago
5 0

Answer:

-2.5

Step-by-step explanation:

Just change 1/2 to .5 and there you have it. Negative two isn't a fraction or percentage so it doesn't need to be changed.

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The students at Sam's School voted between a bear and lion as the new school mascot. Of the 100 students at Sam's school, 35% vo
Alex777 [14]

Answer:

35 students.

Step-by-step explanation:

If there are 100 students at the school and 35% of them voted for the bear, it means 35 students voted for the bear (100*0.35=35).

4 0
3 years ago
Read 2 more answers
Write -7i as complex number
anygoal [31]

Step-by-step explanation:

z = 0 -7i ....................

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3 years ago
Simplify x^2+3x-4/x+4 Show work and explain why x doesn’t equal -4
marin [14]
Take the numerator of the fraction and factor it out.

x^{2} + 3x - 4 = (x+4)(x-1)

Your fraction should now look like this:

\frac{(x+4)(x-1)}{(x+4)}

Because (x+4) is present in both the numerator and denominator, you can cross it out. You should be left with only (x-1) in the numerator.

x cannot equal -4, as if it is inputted in the denominator, -4 + 4 would equal 0. Dividing by 0 is impossible.

5 0
3 years ago
Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AD = 9
8090 [49]

Answer:

16

Step-by-step explanation:

Use a special rule: BD^2=AD*DC (the squared height in right triangle drawn to hypotenuse is equal to the product of the parts of hypotenuse on which height divides the hypotenuse) 12^2=9*DC

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6 0
3 years ago
How do I do #12? <br><br> Please show all work. <br><br> Please help!
hammer [34]

You have the ratio set up correctly:

2x+2/12 = x+3/21

Now cross multiply:

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Simplify:

24x + 24 = 21x + 63

Subtract 24 from each side:

24x = 21x + 39

Subtract 21x from each side:

3x = 39

Divide both sides by 3:

x = 39/3

x = 13

5 0
3 years ago
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