3 years ago

Can someone please help me with number two

Mathematics

2 answers:

Ad libitum [116K]3 years ago

7 0

4 divided by 4 plus 4 divided by 4

Vladimir79 [104]3 years ago

4 0

+, +, -bdhdhdhdjjsks

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Cristine's middle school has a total of 900 students and 45 teachers. The local high school has 110 teachers and a student-teach

Luba_88 [7]

900/45 = 20

so ratio of middle school students and teachers: 900:45 = 20:1

if high school student-teacher ratio as middle school then

x/110 = 20/1

so x = 110 * 20 = 2200

answer is C) 2200

3 0

3 years ago

Read 2 more answers

Determine the angle at the centre of a circle with radius 6.0 cm for an arc length of 8.0 cm.

sveta [45]

Answer:

Third option.

Step-by-step explanation:

You need to remember that the formula used to calculate the arc lenght is:

$arc\ length=r C$

Where "r" is the radius and "C" is the central angle in radians.

You need to solve for "C":

$C=\frac{arc\ length}{r}$

You know the radius and the arc lenght, therefore, you can substitute values to calculate the central angle in radians. Therefore, this is:

$C=\frac{8.0cm}{6.0cm}$

$C=\frac{4}{3}radians$

4 0

3 years ago

Which function is the inverse of f(x)= 3x+5 over 7

Pani-rosa [81]

f(x) = (3x+5)/7

Step 1:

we write f(x) as y

y=(3x+5)/7

Step 2:

switch y by x and x by y

x=(3y+5)/7

Step 3:

solve for y,

x=(3y+5)/7

multiply both sides by 7

7x=3y+5

subtract 5 from left side

3y=7x-5

divide both sides by 3

y= (7x-5)/3

f⁻¹ (x) =(7x-5)/3

8 0

3 years ago

Which of the following describes the following graph?

andre [41]

A. neither a function nor a relation

5 0

3 years ago

If f ( x ) = 3x² - 5x + 7 , Show that f ( -1 ) = 3 f ( 1 ) . Tysm :')

Lelechka [254]

Solution :

3x² - 5x + 7

put x = -1

3(-1)² - 5(-1) + 7

3(1) + 5 + 7

3 + 12

Now, put x = 1

3(1)² - 5(1) + 7

3(1) - 5 + 7

3 + 2

here :

f(-1) = 15

f(-1) = 3(5)

f(-1) = 3 f(1)

4 0

2 years ago