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Vlad1618 [11]
4 years ago
15

How many real numbers in f(x)=x^2+x^2+2

Mathematics
1 answer:
Taya2010 [7]4 years ago
7 0
2 is the only real number but it occurs 3 times
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Please help this is hard! Class A has 11 pupils and class B has 22 pupils.
baherus [9]

The the mean score (rounded to 2 DP) in the maths test across both classes is 63.67

What is the mean of scores?

The mean of scores is the sum of the scores for all students divided by the number of students

Class A:

mean score=39

mean score=sum of scores/number of students

39=sum of scores/11

sum of scores=39*11

sum of scores=429

Class B:

mean score=76

mean score=sum of scores/number of students

76=sum of scores/22

sum of scores=76*22

sum of scores=1672

overall mean score=(429+1672)/(11+22)

overall mean score= 63.67

Find out  more about mean on:brainly.com/question/20118982

#SPJ1

8 0
2 years ago
jose bought 2 movie tickets and a box of popcorn, the popcorn was $6 he spent a total of $24 how much did each movie ticket cost
Leona [35]

SO we know he spent a total of $24

We also know the popcorn was $6, so we subtract 6 from 24

24-6=18

And we know he bought 2 tickets for a total of $18, so we will divide 18 by 2

18/2=9

Each ticket was $9

Hope this helps!

3 0
4 years ago
Help!! i need to rewrite these question to avoid measurement error.
maw [93]
Should seniors once a semester be dismissed early on Fridays?

Sugary drinks cause tooth decay and obesity. How many soft drinks with sugar did you drink this past week?
5 0
4 years ago
How many solutions?
Sunny_sXe [5.5K]

Answer: C

Step-by-step explanation: all real numbers can solve this problem

5 0
3 years ago
Read 2 more answers
A delivery truck can transport packages weighing at most 3,800 pounds(lbs) and with a volume of no more than 400 cubic feet (ft^
Makovka662 [10]
Let's approach this problem by slowly eliminating choices.

First consider the keyword "at most" and "no more than". This means that the inequality should be less than or equal to the constant value stated. This will automatically eliminate two choices with the greater than symbol favoring the variables - choices A and D.

Next we associate the right constants to the right coefficients of variables. The two kinds of weight the truck transports are 30 and 65 lbs, and we know that this should not exceed 3,800 lbs. This is therefore our first inequality. The other inequality is for the volume. The combinations of the two volumes 4 and 9 cubic feet should not exceed 400 cubic feet when transported.

If you try to construct the inequality and miss it among the choices, don't worry! Let's try doing some simplifications first and see if it matches either B or C.

After simplification you can get 6x+13y \leq 760 from dividing the equation by 5 and 4x+9y \leq 400 for leaving it as it is.

Looking carefully, we can see that this is equivalent to option B.

ANSWER: B.
7 0
4 years ago
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