All categories

2 years ago

Please help me out with this thingyyy!!!!!

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

5 0

Answer:

1. 18

2. 8

Step-by-step explanation:

the mean is calculated by:

total / number of values

the current total is

10 + 14 + 8 + 16 + 12 = 60

now when we add another number there will be 6 numbers and we want the mean to be 13 so:

total / 6 = 13

total = 13 × 6

total = 78

but our current total is 60

so the missing number is 78 - 60 = 18

for part 2:

if we remove a number there will be 5 values and we want the mean to be 14 so:

total / 5 = 14

total = 14 × 5

total = 70

but we have the total of 6 numbers as 78 so we have to remove 78 - 70 = 8

You might be interested in

If you can please do it all just tryna go to sleep

Lubov Fominskaja [6]

Answer:

1. 1

2. -3

3. yes

4. no, it is not, because the function stop at point (-6, -2)

5. -2

6 0

2 years ago

What times what equals -30 but also can be added together and equal -4

Step2247 [10]

Answer:

Step-by-step explanation:

xy=-30

y=-30/x

x+y=-4

x-30/x=-4

x²-30=-4x

x²+4x-30=0

$x^2+4x-30=0\\x=\frac{-4\pm\sqrt{16+120} }{2} \\=\frac{-4\pm\sqrt{136} }{2} \\=-2\pm\sqrt{39} \\=-2+\sqrt{39} ,-2-\sqrt{39} \\y=\frac{-4}{-2+\sqrt{39} } ,\frac{4}{2+\sqrt{39} }$ $correction write ~-30 ~in~place~of~-4~in~the~end$

5 0

2 years ago

The possible values of x are given by x+8=<6.<br><br>The greatest possible value of 7x is_____

kozerog [31]

Answer:

The possible values of x is given by $x\leq -2$ and they include: -2, -3, -4, -5, -6 and so on

The greatest possible value of 7x is $-14$

Step-by-step explanation:

We are given the equation: x + 8 <= 6

Let collect the like terms:

$x + 8 \leq 6\\x\leq 6 -8\\x \leq -2$

Therefore, x <= -2 and the possible values include: -2, -3, -4, -5, -6 and so on

To find the greatest possible value of 7x is when x = -2.

$7x = 7 * -2\\7x = -14\\$ .

6 0

2 years ago

Sandra is 4 feet tall. Pablo is 10% taller than Sandra and Michaels is 8% taller than Pablo. What is Michael height in feet

taurus [48]

We first calculate Pablo's height .

4 = 100%

x = 1% (Where x is 1% of Sandra's height.)

cross multiplying the equation, we get:

100x = 4 → x = 4/100 → x = 0.04

If 1% = 0.04, then 10% will be 0.04 × 10 = 0.4

Pablo's height is 4 + 0.4 = 4.4 feet.

Now we repeat the above steps to get Michal's height from Pablo's height

4.4 = 100%

x = 1% so:

100x = 4.4 → x = 4.4/ 100 → x = 0.044

If 1% = 0.044, then 8% will be 0.044 × 8 = 0.35

Michael's height is 4.4 + 0.35 = 4.75 feet.

5 0

3 years ago

What is the difference between a histogram and a bar graph?

Aloiza [94]

Answer:

A histogram deals with continuous data in ordered columns, while a bar graph deals with discrete data in separate columns.

Step-by-step explanation:

7 0

2 years ago