From the set {20, 38, 47}, use substitution to determine which value of x makes the inequality true. x - 9 > 29
a. 47

b.none of these

c.38

d.20

Answers

Answer 1

Answer: one way is to solve (it's easier)

x-9>29
add 9
x+9-9>29+9
x+0>38
x>38
just pick the numbers bigger than 38 as answer

47 is only number (38>38 is false)

answer is A

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Solve the equation for k.
k=5/12
omg please help me

Answers

5 divided by 12 is 0.41666667

Answer:

k=0.416

Step-by-step explanation:

k= $(5)/(12)$ right?

the observatory is made of a 3 foot tall cylinder and half of a sphere. what is the volume of the space inside the observatory?

Answers

It's not possible to answer this question without knowing
the diameter of either the cylinder or the half-sphere.

Whatever their diameter is, the volume inside the observatory is

[ π (diameter)² / 12 ] [ 9 + diameter ] cubic feet .

What is equivalent to 9c - 12 - 15c - 8 - 3c?

Answers

The expression 9c - 12- 15c - 8 - 3c is equivalent to -9c - 20.

What is an algebraic expression?

An algebraic expression is consists of variables, numbers with various mathematical operations,

The given expression is,

9c - 12- 15c - 8 - 3c.

Solve the expression for terms c,

9c - 12 - 18c - 8

-9c - 12 -8

Further, solve for constant terms,

-9c - 20

The simplified form of the expression is -9c - 20.

To know more about Algebraic expression on:

brainly.com/question/19245500

#SPJ2

Answer:

-9c-20

Step-by-step explanation:

Simplify the equation by adding/subtracting the like terms (c and numbers)

Paint is red : blue in a ratio of 2 : 4. If 5 litres of red is used how much blue is used

Answers

so since the ratio of red paint to blue paint is 2:4 and you can simplify 2:4 into 1:2 and because 5 liters of paint is used you would have to multiply the 2 from the simplified ratio by 5 so you could get the answer 2*5 and that equals 10

Mike is three times as old as his little sister, Mary. In 4 years, he will be twice as old as Mary. How old is Mary?

Answers

x-the age of Mike
y-the age of his sister

x=3y

x+4=2(y+4)
3y+4=2y+8
3y-2y=8-4
y=4 years

x=3*4=12 years

Mary: x yrs old
Mike: 3x yrs old

In four yrs:

Mary: x+4 yrs old
Mike: 3x+4 yrs old

As the text of task:

3x+4=2(x+4)
3x+4=2x+8
3x-2x=8-4
x=4

Mary is 4 yrs old

Allison practices her violin for at least 12 hours per week she practices for three fourths of an hour each session if Allison has already practiced 3 hours this week how many more sessions remains for her to meet or exceed her weekly practice goals.