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myrzilka [38]
2 years ago
13

What is -4 3/10 - 8 3/10

Mathematics
2 answers:
nadya68 [22]2 years ago
4 0

Answer:

-12 3/5

Step-by-step explanation:

-4 3/10 - 8 3/10

The signs are the same so we add and then take the sign

4 3/10 + 8 3/10

Add the whole numbers

4+8 = 12

Add the fractions

3/10 + 3/10 = 6/10

Simplify the fraction

6/10 = 3/5

Put them together

12 3/5

Add the sign

-12 3/5

Anna35 [415]2 years ago
3 0

Answer:

Step-by-step explanation:

Change the mixed fraction to improper fraction

-4 3/10 = -43/10

-8 3/10 = -83/10

-4\frac{3}{10}-8\frac{3}{10}=\frac{-43}{10}-\frac{83}{10}\\\\=\frac{-43-83}{10}\\\\=\frac{-126}{10}\\\\=-12\frac{6}{10}

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What is margin of error??
Tems11 [23]

Answer:

The margin of error for a sample size of 250 is 6

Step-by-step explanation:

The margin of error is given as

1/square root of the sample size

Thus, margin of error for a sapless size of 250 is

1/√250

= 1/15. 811

= 6

8 0
3 years ago
A Restaurant buys 50 pound of beef at 1.12 per pound and 24 quarts of milk at .90 quarts. How much money was spent
velikii [3]

Answer:

$77.60

Hope this helps ^-^

3 0
3 years ago
Read 2 more answers
Find f(x) and g(x) so that the function can be described as y = f(g(x)).<br><br> y = 4/x^2+9
dlinn [17]

I'm assuming all of (x^2+9) is in the denominator. If that assumption is correct, then,

One possible answer is f(x) = \frac{4}{x},  \ \ g(x) = x^2+9

Another possible answer is f(x) = \frac{4}{x+9}, \ \ g(x) = x^2

There are many ways to do this. The idea is that when we have f( g(x) ), we basically replace every x in f(x) with g(x)

So in the first example above, we would have

f(x) = \frac{4}{x}\\\\f( g(x) ) = \frac{4}{g(x)}\\\\f( g(x) ) = \frac{4}{x^2+9}

In that third step, g(x) was replaced with x^2+9 since g(x) = x^2+9.

Similar steps will happen with the second example as well (when g(x) = x^2)

4 0
3 years ago
In a certain year, the population of Smallburg was 4,000. In the following year, the population increased by 15%. What was the r
kupik [55]

Answer:4600

Step-by-step explanation:

15% of 4000

15/100 x 4000

(15x4000) ➗ 100

60000 ➗ 100=600

4000+15% of 4000

4000+600=4600

8 0
2 years ago
How do I do 1 and 5?
Nat2105 [25]
I will show you how to do #5:

a).   -20 + 2(n-1)        Original Expression
       -20 +2n - 2          Distributive Property
       -22 + n                Combine Like Terms


Final Expression: -22 + n


b).  1.5 + (-2.5)(n -1)     Original Expression 
       1.5 + -2.5n + 2.5     Distributive Property
       4 - 2.5n                     Combine Like Terms 


Final Expression: 4 - 2.5n




8 0
3 years ago
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