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2 years ago

Henry calculated the mean absolute deviation of the points he earned throughout the year health and music

Mathematics

2 answers:

Yakvenalex [24]2 years ago

6 0

Answer:

its health

Step-by-step explanation:

i took the k12 test and got it wrong and it showed this one was correct

Alex Ar [27]2 years ago

5 0

Answer:

health class

Step-by-step explanation:

when the mean absolute deviation (M.A.D) is lower, that means the data is closer together. When it is higher that means the data is more spread out.

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What’s 3 times 6 over 7 **MULTIPLY

Amanda [17]

Would it be 2.5??? I think it would but not completely sure

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3 years ago

Read 2 more answers

Which ratios correctly compare bananas to apples, as<br> shown in the image? Check all that apply.

Oksana_A [137]

Answer:

where's the picture bro?

Step-by-step explanation:

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3 years ago

In the pulley system shown in this figure, MQ = 30 mm, NP = 10 mm, and QP = 21 mm. Find MN.

ankoles [38]

<h2>Answer:</h2>

$\boxed{\overline{MN}=37.96}$

<h2>Step-by-step explanation:</h2>

For a better understanding of this problem, see the figure below. Our goal is to find $\overline{MN}$ . Since:

$\angle MRS=\angle MQP=90^{\circ} \\ \\ \overline{MQ}=\overline{MR}=30mm$

and $\overline{MN}$ is a common side both for ΔMRN and ΔMQN, then by SAS postulate, these two triangles are congruent and:

$\overline{RN}=\overline{QN}$

By Pythagorean theorem, for triangle NQP:

$\overline{QN}=\sqrt{\overline{NP}^2+\overline{QP}^2} \\ \\ \overline{QN}=\sqrt{10^2+21^2} \\ \\ \overline{QN}=\sqrt{541}$

Applying Pythagorean theorem again, but for triangle MQN:

$\overline{MN}=\sqrt{\overline{MQ}^2+\overline{QN}^2} \\ \\ \overline{MN}=\sqrt{30^2+(\sqrt{541})^2} \\ \\ \boxed{\overline{MN}=37.96}$

3 0

3 years ago

Question 4 of 25 Use the substitution method to solve the system of equations the correct ordered par x+y=5 y=7

alex41 [277]

Answer:

x = -2

y = 7

Step-by-step explanation:

x+y=5

y=7

x+y=5

x + 7 = 5

x = -2

x+y=5

-2 + y = 5

y = 7

8 0

2 years ago

Mr. Wallace needs to divide his class or 23 students into 9 groups. Each group can have two or three students. If a is the numbe

IRINA_888 [86]

Answer:

d) Mr.Wallace can use the following equations:

a + b = 9

2 a + 3 b = 23

Step-by-step explanation:

Here, the total number of students = 23

Number of groups = 9

Each group can have 2 or 3 students.

a is the number of groups of 2.

⇒ Total students in a groups = a x (Number of student in each group)

= a x 2 = 2 a

b is the number of groups of 3

⇒ Total students in b groups = b x (Number of student in each group)

= b x 3 = 3 b

So, according to the question:

Total number of groups formed = 9

⇒ a + b = 9

Total number of students = 23

or Number of students in ( a group + b group ) = 23

⇒ 2 a + 3 b = 23

Hence, Mr.Wallace can use the following equations:

a + b = 9

2 a + 3 b = 23

6 0

3 years ago