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2 years ago

How can you split 20 into 3 groups

Mathematics

1 answer:

Leviafan [203]2 years ago

7 0

The answer is 6 per team with 2 left over, as (6 x 3) + 2 = 20

I thought of the largest amount that could be multiplied by 3, but the product would be less or equal to 20, that's how I got 6.

Then to find the left over remaining balls that are given out I subtracted 20-18 = 2.

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In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older

earnstyle [38]

Answer:

Step-by-step explanation:

In the past, mean of age of employees

i.e. $\mu = 40$

Recently sample was taken

n = sample size = 60

Mean of sample = 45

Std dev of sample s = 16

$H_0: \bar x = 40\\H_a: \bar x >40$

(Right tailed test)

Since only population std deviation is known we can use t test only

Std error = $\frac{s}{\sqrt{n} } \\=\frac{16}{\sqrt{61} } \\=2.049$

Mean difference = 45-40 =5

Test statistic t= $\frac{5}{2.049} \\=2.441$

df = 60

p value =0.008739

Since p < 0.05 we reject null hypothesis

The mean age has increased.

5 0

2 years ago

Draw the image of ∆ABC under the dilation with scale factor 4 and center of dilation (-3, -4).

castortr0y [4]

Answer:

ABC

Step-by-step explanation:

7 0

2 years ago

Three times a number plus five equal twenty

Bezzdna [24]

Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
x=5

3 0

2 years ago

Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

maw [93]

Answer:

1. 4 is the constant

2. x > -2

3. 2.86 inches

^The formula for the circumference of a circle is C=2∏r, in which r=radius. To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.

hope this helped:)

Brainliest?

8 0

3 years ago

What is the perimeter of this triangle

DENIUS [597]

Answer:

they are all equal side so add them up

Step-by-step explanation:

3 0

3 years ago