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Vladimir [108]
3 years ago
6

Solve 9x + 7 = 43 for x

Mathematics
2 answers:
Shtirlitz [24]3 years ago
7 0
9x+7 = 43

1st step you need to get 9x by itself, to do this subtract 7 from both sides

9x +7 - 7 = 43 - 7

now you have 9x = 36

 to solve for x divide both sides by 9

9x /9 = 36/9

x = 4

garri49 [273]3 years ago
3 0
The answer would be 4. 9x4=36 and then 36+7= 43.  
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How to do 2x+4=12 plz show how you got it
OverLord2011 [107]
2x + 4 = 12

We're simply just trying to isolate x.

So, we must get x onto it's own side of the equal sign :)

Our first step is to subtract 4 from both sides.

2x + 4 - 4 = 12 - 4

Simplify.

2x = 8

Then, we divide both sides by 2.

2x ÷ 2 = 8 ÷ 2 

Simplify.

x = 4

----------

To check your work, simply plug in the value of x into x in the original equation.

In this problem, x = 4, so plug in 4 for x.

2x + 4 = 12

2(4) + 4 = 12

Simplify.

8 + 4 = 12

12 = 12

Therefore, x = 4

~Hope I helped!~
8 0
3 years ago
Read 2 more answers
Roberto has eight coins that are all dimes or nickels. They are worth $0.50. How many dimes and how many nickels does Roberto ha
natita [175]

Answer: Roberto has 2 DIMES and 6 NICKELS.

Step-by-step explanation:

<em><u>Equation 1:</u></em> 2 * 10 = 20 cents (Dimes)

<em><u>Equation 2:</u></em> 6 * 5 = 30 cents (Nickels)

<em> </em><u><em>Solution:</em></u><em> </em>30 + 20 = 50 cents

7 0
3 years ago
Match the types of well formed formulas with the expressions. Negation Conjunction Disjunction Conditional Biconditional A. T &l
nikklg [1K]
<h3>Answers:</h3>
  • A. T <-> U  is a <u>biconditional</u>
  • B. (A & B) v (C & D)  is a <u>disjunction</u>
  • C. R -> ~S  is a <u>conditional</u>
  • D. P & Q   is a <u>conjunction</u>
  • E. ~(R v P)  is a <u>negation</u>

========================================

Explanations:

  • A biconditional is anything in the form A <-> B. This is a compact way of saying (A -> B) & (B -> A). We replace A and B with logical statements.
  • Disjunctions are of the basic form A v B. The "v" basically means "or".
  • Any conditional is of the form "if... then...". For example, "if it rains, then it gets wet outside" is a conditional. In terms of logic symbols, we write A -> B to mean "if A, then B".
  • Conjunctions are whenever we combine two logical statements with an "and" or an ampersand symbol. The basic form is A & B
  • Negations are the complete opposite of the original. If the original is P, then the negation is ~P, which is read as "not P".
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sweet-ann [11.9K]

Answer:

bueh

Step-by-step explanation:

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a restaurant has an all-you-can-eat buffet. They charge $13.95 per person. what is the constant of proportionality?​
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Answer:

staurant has an all-you-can-eat buffet. They charge $13.95 per person. what is the constant of proportionality?​

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