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3 years ago

8

Tina is planning to paint a wood box she is using small paint cans that cover 20 square feet of surface area how many cans will

Tina need to paint the outside of her wood box

1 answer:

valkas [14]3 years ago

7 0

Answer:

How much is the ouside of the box?

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3=(1/4)f(-2)<br> How do u solve this

vlabodo [156]

Isolate the variable by dividing each side by factors that don't contain the variable.
Answer: f= -6

8 0

3 years ago

A math class is having a discussion on how to determine if the expressions 4x-x+5 and 8-3x-3 are equivalent using substitution.

bixtya [17]

Answer:

option (b) is correct.

Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent.

Step-by-step explanation:

Given : A math class is having a discussion on how to determine if the expressions 4x - x + 5 and 8 - 3x - 3 are equivalent using substitution.

We have to choose the correct method from the given options that the class has suggested.

Since we have to show the given expressions 4x - x + 5 and 8 - 3x - 3 are equivalent using substitution.

We will choose a single value of x and then evaluate both the given expression at that single value and if the output of both expression comes out to be same then the two expressions must be equivalent.

For example lets take x = 2,

Then expression 4x - x + 5 becomes 4(2) - 2 +5 = 8 - 2 + 5 = 6 + 5 = 11

also, expression 8 - 3x - 3 becomes 8 - 3(2) - 3 = 8- 6 - 3 = 8 - 9 = -1

thus, the value is not equal hence, the two expression are not equivalent.

Thus, option (b) is correct.

Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent.

6 0

3 years ago

Read 2 more answers

What is the probability that if 13 letters are typed, no letters are repeated?

faltersainse [42]

If there are 13 letters typed, the probability that no letters will be repeated can be found to be 1.05 x 10⁻²⁰

<h3>How to find the probability no letters are repeated?</h3>

First, find the number of possibilities of 13 letters from 26 letters in the alphabet as:

= 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26

= 6.156 x 10³⁶ possibilities

If the numbers are not to be repeated then the possibilities are:

= 26 x 25 x 24 x 23 x 22 x 21 x 20 x 19 x 18 x 17 x 16 x 15 x 14

= 64764752532480000 possibilities

The probability that no letters are repeated is:

= 64764752532480000 / 6.156 x 10³⁶

= 0.0000000000000000000105

= 1.05 x 10⁻²⁰

Find out more on probability at brainly.com/question/8994028

#SPJ1

5 0

1 year ago

PLEASE ANSWER ASAP !!

trapecia [35]

Answer:

y = - 6x - 2

Step-by-step explanation:

The straight line equation is y = mx + c

First step is to bring the equation given to this form, where you make y the subject.

Now you can easily note down the gradient(m1). You will need it to find the gradient(m2) of the perpendicular line, because m1 × m2 = -1

After you have that substitute the value and the values of x and y given to find c .

Lastly, substitute the value of m2 and c into y = mx + c to find the line that is perpendicular .

Hope I was able to help:)))

7 0

3 years ago

What are the diameter and circumference of the unit circle? Answer using π.

sveticcg [70]

Answer:

Diameter = 2 Circumference = 2π

Step-by-step explanation:

The diameter of a circle is the radius*2 and the radius of a unit circle is 1 so the diameter is 2. The circumference of a circle is the diameter*π. Since you are allowed to express it in terms of π. Just leave it at 2π, though the actual value of π is approximately 3.14

4 0

3 years ago