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Rainbow [258]
3 years ago
12

What dose this equal -7/8+(-5/8)

Mathematics
2 answers:
nordsb [41]3 years ago
6 0
The answer is 2/3 if I’m correct
Levart [38]3 years ago
4 0

Answer:

-12/8 or -1.5

Step-by-step explanation:

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75

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What does 4 3/8+ 6 3/4 equal
ANTONII [103]

Answer: 11.125

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PLEASE HELPPPP DUE IN 2 minutes
Sophie [7]

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16

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In order to win a quiz contest, olga must score more than 400 points. She earns 12 points for each right answer, and loses 4 poi
Ket [755]

The inequality that represents the number of right answers (r) and wrong answers (w) Olga can give to win the contest is:  3r-w>100

<u><em>Explanation</em></u>

Number of right answers is  r and number of wrong answers is  w

Olga earns 12 points for each right answer and loses 4 points for each wrong answer.

So, total points earned for r right answers =12r

and total points lost for w wrong answers =4w

That means, <u>her score will be</u>:  (12r-4w) points.

In order to win the quiz contest, Olga must score <u>more than 400 points</u>. So, the inequality will be.......

12r-4w>400\\ \\4(3r-w)>400\\ \\  3r-w>100

4 0
3 years ago
Please can anyone send a question in law of indices I really need it now​
DaniilM [7]

Answer:

I think this is a pretty good question of law of indices

Step-by-step explanation:

Given that

(9^p)(27^q)=3^n\\

a) express n in terms of p and q ,

b) hence if p = 1 and q = 2 find the value of n

Solution to part a)

(9^p)(27^q)=3^n\\\\

Simplify the equation and how do we do that? As we can see that 9 can also be written as 3^2 and 27 can be written as 3^3 we can rewrite the following equation like this,

(3^2)^p(3^3)^q=3^n\\

now we multiply p with 2 and

multiply q with 3 respectively,

(3^{2p})(3^{3q})=3^n\\

now since the bases are same and are multiplying the exponents will add themselves like this, in this equation the number 3 is the base

3^{2p+3q}=3^n\\

now since the bases on the left hand side and on the right hand side are equal the exponents will also be equal so now,

2p+3q=n\\

hence n is expressed in terms of p and q

Solution to part b)

if p = 1 and q = 2 we plug in these values in the above equation we found for n

n = 2p + 3q

n = 2(1) + 3(2)

n = 2 + 6

n = 7

6 0
3 years ago
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