Ask question

Ask question

All categories

3 years ago

13

Here is a list of spelling-test results.Calculate the mean.14,19,19,20,16,18,15,17,12

1 answer:

makvit [3.9K]3 years ago

4 0

To find the mean (average), we first need to add up all the test scores (14 + 19 + 19 + 20 + 16 + 18 + 15 + 17 + 12 = 150). Then, we need to divide that number (150) by the number of numbers in the data set (9 in this case). So the mean of these test scores is about 16.6666666667.

You might be interested in

What are the three types of systems of linear equations and how are the different?

Shkiper50 [21]

Answer:

Consistent/Independent, Inconsistent, Dependent

Step-by-step explanation:

<u>Consistent/Independent:</u>

Where there's only one unique solution

<u>Inconsistent</u>

Where there is no solution

<u>Dependent</u>

Where the solution is dependent

5 0

2 years ago

What is the value of s and the length of side BC if ABCD is a rhombus?

Natali5045456 [20]

Step 1

<u>Find the value of s</u>

we know that

In a Rhombus all sides are congruent

so

$AB=BC=CD=DA$

$AB=9s+29\\CD=10s-16$

equate AB and CD

$9s+29=10s-16\\$

Combine like term

$10s-9s=29+16\\$

$s=45\ units$

<u>The answer Part a) is</u>

the value of s is $45\ units$

Step 2

<u>Find the value of side AB</u>

$AB=9s+29$

substitute the value of s

$AB=9*45+29=434\ units$

Remember that the sides are congruent

$AB=BC=CD=DA$

therefore

<u>the answer Part b) is</u>

The length of the side BC is $434\ units$

4 0

3 years ago

Read 2 more answers

I need help ASAP PLEASE

White raven [17]

A) y= x+1
b) y= -2/3x-5
c) y=-1/2x+12
d) y= 4x-3/2
According to my calculations all the answers should be correct.

7 0

3 years ago

Bubbles bakery has 24 oatmeal cookies, 36 vanilla bean cookies, 42 chocolate chip cookies. What is the greatest common factor bu

STatiana [176]

Answer:6

Step-by-step explanation:

We have three groups of cookies as follows:

24 oatmeal

36 vanilla bean

42 chocolate chip

If we breack down into factors we get

24 2 24 = 2³ * 3 36 2 36 = 2²*3³ 42 2 42 = 2*3*7

12 2 18 2 21 3

6 2 9 3 7 7

3 3 3 3 1

1 1

Fom where we can get that biggest common factor is 6

24 ÷ 6 = 4

36 ÷ 6 = 6

42 ÷ 6 = 7

Then Bakery will have 4 groups of oatmeal cookies, 6 of vanilla bean, and 7 chocolate chip

7 0

3 years ago

Choose the correct simplification of the expression (2ab5)3. (1 point) Question 8 options: 1) 8ab15 2) 8a3b8 3) 5a3b15 4) 8a3b15

d1i1m1o1n [39]

Answer:

4). $8a^{3}b^{15}$

Step-by-step explanation:

The Given expression is that,

$(2ab^{5})^{3}$

On simplifying,

$(2ab^{5})^{3}$ = $(2ab^{5} )(2ab^{5}) (2ab^{5})$

= $(2^{3} ) * (ab^{5})^{3}$

= (2×2×2) × ( $ab^{5}$ × $ab^{5}$ × $ab^{5}$ )

= $8a^{3}b^{15}$

Thus, <u>option 4</u> i.e. $8a^{3}b^{15}$ is the correct simplification of the given expression.

4 0

2 years ago