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klio [65]
3 years ago
5

After substituting, what is the first step when evaluating x + 3 x minus 4.2 when x = 5?

Mathematics
2 answers:
Step2247 [10]3 years ago
7 0

Answer:

Adding and subtracting :D

Step-by-step explanation:

okay so after plugging in your x you should have an equation that looks like this:

5+15-4.2

because (x=5)+(3*5)- 4.2

so then you start adding and subtracting:

(5+15)-4.2

20-4.2

15.8

Hope this helps :D

adoni [48]3 years ago
6 0

Answer:

Step-by-step explanation:

x + 3x - 4.2....when x = 5

so we sub

5 + 3(5) - 4.2

I would then multiply the 3 and the 5

5 + 15 - 4.2

then I would add

20 - 4.2

then subtract

15.8

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He expression x2y - 2xy - 24y can be factored by first factoring out a common factor of y.
VladimirAG [237]

Answer:

The expression x2y - 2xy - 24y can be factored by first factoring out a common factor of y.

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6 0
3 years ago
Read 2 more answers
-5/3*(-1/8) multiply to find answer
kari74 [83]

Fraction:

5/24

Decimal Form:

0.2083

6 0
3 years ago
Help pleaseeee!!!!!!!
mylen [45]
Help with what? I need more information
6 0
3 years ago
Bob and mark talk about their families.bob says he has three kids, the product of Their age is 72. He gives another clue: the su
drek231 [11]
<span>Bob says he has 3 kids, the product of their age is 72.
So the possible ages of Bob's kids can be taken from the factors of 72

72 = 2 * 2 * 2 * 3 * 3

</span><span>Finally, bob says, my youngest child called justice.
</span>So meaning, Bob has a youngest child. He didn't mention about a twin.

So the possible ages the following:
1, 2, 36 --> sum: 39
1, 4, 18 --> sum: 23
1, 8, 9 --> sum: 18

<span>Once the sum of the ages will be revealed, then the possible ages are mentioned above.</span>
8 0
3 years ago
7.22 (10b-3) =7b-14
faust18 [17]
Multiply 7.22 onto 10b and -3
new equation - 72.2b-21.66=7b-14

add 21.66 onto -14
new equation - 72.2b=7b+7.66

subtract 7b from 72.2
new equation: 65.2b=7.66

divide 65.2 from b
new equation: b=7.66/65.2

final answer: b=0.117
3 0
3 years ago
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