Does anyone know how to solve 81 increased to 90?

Mathematics

2 answers:

statuscvo [17]3 years ago

7 0

89+90=171. keep in mind that increased or increased by means to add

earnstyle [38]3 years ago

5 0

That seems an odd way of wording the question. Do you mean 81+x=90? In other words, what number can you add to 81 to get 90. You can also switch it around so 90-81=x.

81+x=90
x=90-81
x=9

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If ab = c - d, which of the following is an expression for d in terms of a, b, and c?

horsena [70]

ANSWER

$d = - ab + c$

EXPLANATION

The given expression is

$ab = c - d$

To find an expression for d in terms of a, b, and c, means we want to make d the subject of the relation.

This means that, we need to isolate d on one side of the equation while all other terms are on the other side.

We subtract from both sides of the equation to obtain,

$ab - c = - d$

We now divide through by -1, to get,

$- ab + c = d$

Or

$d = - ab + c$

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3 0

3 years ago

Can somebody please help i need the help to help me pass my math class thx so much if you can

natulia [17]

Answer:

Step-by-step explanation:

1. x = 11.2

2. 13

3. 9

4. -7/15

5. 15b

6. -12x + 16