3 years ago

What is the mean number of people in each age range? Explain

2 answers:

6 0

To find the mean you add all the numbers and then divide the sum by how many numbers there are :

8+16+12+11+8=55

there are 5 numbers in the equation so you divide 55 by 5 :

55÷5=11

the mean is 11

hope this helps

Natali [406]3 years ago

4 0

55 because if you use calculator an add 16+12+11+8+8

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Karen is buying pens and pencils for the new school year. She wants to have no more than 25 writing utensils in all. She also wa

bezimeni [28]

For this case, the first thing we must do is define variables.
We have then:
x: number of pens
y: number of pencils
We now write the system of inequations:
$x + y \leq 25

y \geq (x - 3) ^ 2
$
The solution to the system of inequations is given by the shaded region.
Note: see attached image.

3 0

3 years ago

fie abc un triunghi cu masura unghiului a de 90 de grade ab este 6 cm bc=10 si ca=8 calculati;sin b; tg b; sin c; tg c; cos b; c

lions [1.4K]

SinB = cosC = AC / BC = 8/10 = 4/5;
tgB = ctg C = AC/AB = 8/6 = 4/3, because we use T. Pitagora for calculating AB;
sinC = cosB = AB/ BC = 6/10 = 3/5;
tgC = ctgB = AB/ AC = 6/8 = 3/4.

6 0

3 years ago

F(x)=4x <br> 2<br> +2x+6 How many distinct real number zeros does f have?

hoa [83]

Answer:

It has 0 distinct real number zeros. The function does not touch the x-axis

6 0

3 years ago

Read 2 more answers

Solve by elimination -2x+2y=6 and 4x×2y=-5

Valentin [98]

Answer:

x=-11/6, y=7/6. (-11/6, 7/6).

Step-by-step explanation:

-2x+2y=6

4x+2y=-5

-----------------

2(-2x+2y)=2(6)

4x+2y=-5

----------------------

-4x+4y=12

4x+2y=-5

----------------

6y=7

y=7/6

4x+2(7/6)=-5

4x+14/6=-5

4x=-5-14/6

4x=-30/6-14/6

4x=-44/6

x=(-44/6)/4

x=(-44/6)(1/4)

x=-44/24

simplify

x=-11/6

3 0

3 years ago

Solve for x. Reduce any fractions to lowest terms. Don't round your answer, and don't use mixed fractions. 54x+64 49x + 59

never [62]

Answer:

x=-1

Step-by-step explanation:

54x+64=49x+59

subtract 64

54x=49x-5

subtract 49x

5x=-5

divide by 5

x=-1

7 0

3 years ago