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klemol [59]
3 years ago
7

How do you translate "twice x is 5" into a mathematical expression?

Mathematics
1 answer:
KonstantinChe [14]3 years ago
8 0

How do you translate "twice x is 5" into a mathematical expression?

2x = 5

You might be interested in
Simplify:<br> 5/4x-8y-1/4x+7y+3<br> A)x-y+3<br> B)3/2x+y+3<br> C)3/2x-y+3<br> D)x+y+3
Dovator [93]
<span>A)x-y+3 is your answer 

Proof:

(5 x)/4 - 8 y - x/4 + 7 y + 3
Put each term in (5 x)/4 - 8 y - x/4 + 7 y + 3 over the common denominator 4: (5 x)/4 - 8 y - x/4 + 7 y + 3 = (5 x)/4 - (32 y)/4 - (x)/4 + (28 y)/4 + 12/4:
(5 x)/4 - (32 y)/4 - x/4 + (28 y)/4 + 12/4
(5 x)/4 - (32 y)/4 - x/4 + (28 y)/4 + 12/4 = (5 x - 32 y - x + 28 y + 12)/4:
(5 x - 32 y - x + 28 y + 12)/4
Grouping like terms, 5 x - 32 y - x + 28 y + 12 = (28 y - 32 y) + (5 x - x) + 12:
((28 y - 32 y) + (5 x - x) + 12)/4
28 y - 32 y = -4 y:
(-4 y + (5 x - x) + 12)/4
5 x - x = 4 x:
(-4 y + 4 x + 12)/4
Factor 4 out of -4 y + 4 x + 12:
(4 (-y + x + 3))/4
(4 (-y + x + 3))/4 = 4/4×(3 + x - y) = 3 + x - y:
Answer:  3 + x - y
</span>
6 0
3 years ago
Shawn earns $12.75 per hour. How many hours does she need to work to earn $102 or more. Write and solve an inequality.​
astra-53 [7]
First we divide 102 by 12.75 to get the hours which is 8 hours. So it would take 8 hours
4 0
2 years ago
the distant around a track is 1/4 mile. a marathon is 26 1/5 miles. How many laps does it take to run a marathon​
sleet_krkn [62]

Answer:

108 1/8

Step-by-step explanation:

1/4=0.25, 1/5=0.2

=>26+0.2=26.2

=>26.2/0.25=108.8

8 0
3 years ago
4c+6+2<br><br> if anyone can tell me the answer it would mean so much!
hodyreva [135]

Answer:

Just combine like terms

6+2=8

4c can’t be combines

so 4c+8

3 0
3 years ago
Read 2 more answers
X + 2/3 = 8/9 x=__ ..........................................
stepladder [879]

Answer:

x = -6

Step-by-step explanation:

x+\frac{2}{3}=\frac{8}{9}x\\\\x  = \frac{8}{9}x - \frac{2}{3}\\\\x - \frac{8}{9}x= -\frac{2}{3}\\\\\frac{9}{9}x-\frac{8}{9}x=\frac{2}{3}\\\\\frac{1}{9}x=-\frac{2}{3}\\\\x=-\frac{2}{3}*\frac{9}{1}\\\\x=(-2)*3\\\\x = -6

6 0
3 years ago
Read 2 more answers
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