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3 years ago

7. Define a variable and write an expression for the phrase. 8 minus a number

Mathematics

2 answers:

lakkis [162]3 years ago

7 0

8-x ccccccccccccccccccccc

xxTIMURxx [149]3 years ago

5 0

A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters x, y, and z are common generic symbols used for variables.

So basically for your expression:

8-x
Hope that helped

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What is the word for the following fraction? 4/7

VLD [36.1K]

Answer:four over seven

Step-by-step explanation:

6 0

3 years ago

On Tuesday James bought seven CDs. On Wednesday half of all the CDs that he had were destroyed. On Thursday he had 12 left. How

Sauron [17]

Answer:

He have 17 CDs on Monday.

Step-by-step explanation:

Given:

On Tuesday James bought seven CDs. On Wednesday half of all the CDs that he had were destroyed. On Thursday he had 12 left.

Now, to find the CDs he have on Monday.

Let the CDs he have on Monday be $x.$

So, on Tuesday as James bought 7 CDs:

$x+7.$

Now, on Wednesday half of all the CDs that he had were destroyed:

$\frac{x+7}{2}$

As, given on Thursday he had left CDs = 12.

According to question:

$\frac{x+7}{2}$ $=12$

Multiplying both sides by 2 we get:

$x+7=24$

Subtracting both sides by 7 we get:

$x=17.$

Therefore, he have 17 CDs on Monday.

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4 years ago

Order the functions from the narrowest graph to the widest graph. PLEASE HELP!!!

Mkey [24]

H(x) = 4x², g(x) = -2x², f(x) = 1/4x²

7 0

4 years ago

Please help I haven’t been to school in a while and I need help

kakasveta [241]

You're given an angle, the side adjacent to the angle, and are looking for the hypotenuse.

Use cosine = adjacent / hypotenuse.

cos(60) = 2√(3) / x

Rearrange the equation to solve for x (multiply both sides by x, then divide both sides by cos(60)).

x = (2√(3)) / (cos(60))

x equates to about 6.928

5 0

3 years ago

Read 2 more answers

GCF of 9ab^2 and 6bc^2

garik1379 [7]

The GCF is 3*b = 3b

Step-by-step explanation:

The GCF is the Greatest Common Factor which will divide all the numbers whose GCF it is.

To find the GCF, we factorize the polynomials first

So,

$9ab^2 = 3*3*a*b*b\\6bc^2=3*2*b*c*c$

We can see that only 3 and b are common in factors of both polynomials

So,

The GCF is 3*b = 3b

Keywords: GCF, Polynomials

Learn more about GCF at:

#LearnwithBrainly

6 0

3 years ago