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Alinara [238K]
3 years ago
15

Solve for x 9x + 3 = 21

Mathematics
2 answers:
VladimirAG [237]3 years ago
8 0

Hi,

9x = 21 - 3

9x = 18

x = 18/9 = 2

Ratling [72]3 years ago
3 0
<h2>Answer:</h2>

This is a two-step equation:

9x + 3 = 21\\\\9x = 18\\\\x = 2

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Two numbers total 10, and there difference is 12. Find a smaller of the two numbers.
Olenka [21]

Answer:

There doesn't seem to be numbers to answer that, do you have the question right? If it was a difference of 18, for example, the numbers would be 64 and 36.

Step-by-step explanation:

Find 2 numbers that added together, equal 10.

91

82

73

64

55

46

37

28

19

Then subtract them by their opposites. Find the numbers with the difference of 12.

91 - 19 = 72

82 -  28 = 54

73 - 37 = 36

64 - 46 = 18

55 - 55 = 0

46 - 64 = -18

37 - 73 = -36

28 - 82 = -54

19 - 91 = -72

There is no numbers with the difference of 12.

If it was a difference of 18, for example, the numbers would be 64 and 36.

7 0
3 years ago
Please help me!
Shalnov [3]

Answer:

The answer is 8.8.

Step-by-step explanation:

99 ÷ 12 = 8.8

       8.8

12⟌99.0 <----put this zero

 -   90

 -   90 <------- here

       0

Hope this helps! I did the best I could. :)

8 0
3 years ago
Determine if this relationship forms a direct variation. Verify your answer.
leva [86]

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or y=kx

so


we have

a) for x=1 y=0.50--------> y/x=0.50/1------> 0.50

b) for x=2 y=1--------> y/x=1/2-------> 0.50

c) for x=3 y=1.50--------> y/x=1.50/3-----> 0.50

d) for x=5 y=2.50--------> y/x=2.50/5----> 0.50

the value of k is equal to 0.50

so

<span>the relationship forms a direct variation. </span>

the equation is

y=0.50*x


Verify

for x=1

y=0.50*(1)------> y=0.50-----> is correct


for x=2

y=0.50*(2)------> y=1.00-----> is correct


for x=3

y=0.50*(3)------> y=1.50-----> is correct


for x=5

y=0.50*(5)------> y=2.50-----> is correct

4 0
3 years ago
Read 2 more answers
Juan was given a gift card for a coffee shop. Each morning, Juan uses the card to buy one cup of coffee. Each cup of coffee cost
Black_prince [1.1K]

Answer:

A=30-2x

Step-by-step explanation:

Cost of one cup of coffee=$2

The original amount of money on the gift card= $30

Juan's expenses in buying coffee, after x morning are \$2\times x.

The amount of money left, A, on the card = (Original amount) - (Total expenses)

A=30-2x

Hence, the equation for, A, the amount of money remaining on the card is

A=30-2x.

7 0
3 years ago
Help pleaseee it’s a quiz<br> 35 points
nekit [7.7K]

Answer:

what do you need help with

Step-by-step explanation:

6 0
3 years ago
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