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3 years ago

What is the value of x - f(x)=-7 and f(x)=63

Mathematics

1 answer:

solong [7]3 years ago

3 0

Answer:

Step-by-step explanation:

Given expression:

x - f(x) = -7

f(x) = 63

Unknown:

The value of x = ?

Solution:

We can easily solve this problem by simple substitution:

Since;

x - f(x) = -7

and f(x) = 63;

x - 63 = -7

x = -7 + 63

x = 56

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Tell me how to shade the area on the grid that shows 7/8x3/4

viva [34]

If the grid is an 8x8:

To solve this we need to convert 3/4 into a fraction x/8 so that they have the same denominator.

To do this we can set a porportion and find a common denominator. 4 x 2 = 8 so the common denominator would be 8 and the rule would be x 2 so 4 x 2 = 8 and 3 x 2 = 6

So we get 7/8 and 6/8

From top to bottom shade 7 spaces in a row

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I hope this helps!

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3 years ago

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Evgen [1.6K]

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2 years ago

Simplify the expression 10-4x(6+5-1) divided by 8+7

Eddi Din [679]

Simple,

writing out the problem...

$\frac{10-4x(6+5-1)}{15}$

Simplify it...

-4x(6+5-1)

-4x(11-1)

-4x(10)

-40x

Making it look like...

$\frac{10-40x}{15}$

Cancel out the common factors...

Thus making the answer:

$- \frac{2(4x-1)}{3}$ .

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2 years ago

Seven and thirty twp hundreths plus two and one tenth times two and seven tenths minus 18a

alexdok [17]

Answer: Write the expression as:

" 70 $\frac{32}{100}$ +
2 $\frac{1}{10}$ * 2 $\frac{7}{10$ − 18a " ;
______________________________________________________
or; write as:
______________________________________________________
" 70.32 + (2.1) * (2.7) − 18a " ;
______________________________________________________

To simplify:
______________________________________________________

Using "PEDMAS" (the "order of operations") ;

the "multiplication" comes first;

So: → "(2.1) * (2.7) = 5.67 " .

And rewrite:
______________________________________________________
" 70.32 + 5.67 − 18a " .

Now: " 70.32 + 5.67 = 75.99 " ;

So, we can the final simplified expression as:
______________________________________________________
" 75.99 − 18a " ;

or; write as: " 75 $\frac{99}{100}$ − 18a " .
______________________________________________________

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3 years ago

-24-(-6)+(-31)<br> step by step<br> be sure to simplify first

trasher [3.6K]

Answer:

-49

Step-by-step explanation:

rule of thumb: whenever you have two negatives, they equal a positive! when you have one negative and one positive, it is a negative!

let's start by going from left to right :))
-24 -(-6) + (-31)
-(-6) is actually + 6!
-24 + 6 + (-31)
+(-31) would be -31 because one - and one + is a -
-24 + 6 - 31
-18 - 31
-49

comment or message me if you are still confused or have a question!

8 0

2 years ago