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3 years ago

Keisha conducts a survey to determine how many siblings each of her classmates has. The data are shown below.

Mathematics

2 answers:

seropon [69]3 years ago

7 0

Answer:

I'm pretty sure it's C

Step-by-step explanation:

Elden [556K]3 years ago

4 0

Answer:sorry its c

Step-by-step explanation:

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How do i solve this?

Alina [70]

Answer:

m∠R = 60°

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Identify

Angle θ = ∠R

Opposite Leg of ∠R = 10√3

Hypotenuse = 20

Step 2: Solve

Substitute in variables [sine]: $\displaystyle sin(R^\circ) = \frac{10\sqrt{3}}{20}$
[Equality Property] Trig inverse: $\displaystyle R^\circ = sin^{-1}(\frac{10\sqrt{3}}{20})$
Evaluate trig: $\displaystyle R = 60^\circ$

8 0

2 years ago

There are 620 students and 31 teachers at the Turner Middle School.There are 950 students and 38 teachers at the Green Middle Sc

kicyunya [14]

We begin with the Turner Middle School:
Ratio of students to teachers: $\frac{620}{31}$
Green Middle School:
Ratio of students to teachers: $\frac{950}{38}$
Let check that we cannot form a proportion:
$\frac{620}{31}=20\text{ and } \frac{950}{38}=25$
The two ratios are not equals so we cannot form a proportion.
Let x be the number of teachers that Green have to hire in order to make the two ratios equal. We get the equation:
 $\frac{950}{38+x}=\frac{620}{31}\text{ and we solve the equation like this:}\\38+x=\frac{950\times31}{620}=47.5 \text{ and then:}\\x=47.5-38=9.5$

The Green school need to hire 9 teachers.

Part-to-whole ratio:
Turner Middle School:
$\frac{620}{31+620}$
Green Middle School:
$\frac{950}{38+950}$

8 0

3 years ago

Read 2 more answers

Each square on the grid represents 1 m2. What is the approximate area of this grassy field?

Mama L [17]

Fam,

Take the average boundary of it. So it would be 8 * 4 = 32.

Thus, it must be less than 32 and most likely greater than 20 so its B!

8 0

2 years ago

Read 2 more answers

Simplify 8/12 completely. 6/10 O 4/8 2/3 O 4/6

Vinil7 [7]

Answer: