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Alex17521 [72]
1 year ago
6

What is the decimal equivalent of each rational number a.7/20 b.-23/20 c.1/18 d.-60/22

Mathematics
1 answer:
Eva8 [605]1 year ago
4 0

Answer:

a. 0.35

b. -1.15

c. 0.056

d. -2.727

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7x + 3y + 2x<br><br> Please help me
Pachacha [2.7K]

Answer:

Your expression would be 9x + 3y

Step-by-step explanation:

Coefficients with the same variables can be added together

7 0
3 years ago
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What does x+x+x+x+x-1+1+1+1= ?<br><br> (Giving this for 30 points)
77julia77 [94]

First, let's add all the x's.

x + x + x + x + x = 5x

5x - 1 + 1 + 1 + 1

Now, let's add together all the 1's that are being added (not the 1 that is being subtracted from 5x).


1 + 1 + 1 = 3

5x - 1 + 3

3 - 1 = 2

5x + 2

There's no way you can actually solve this unless you know the value of x; without x's value, this is as simplified as the expression is going to get.


Hope this helps!

7 0
3 years ago
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Can someone help me find the answer?
raketka [301]

Answer:

AC=9 cm

ABC is not a right angled triangle

Step-by-step explanation:

AB=8cm

BC=5cm

22=AB+BC+AC

AC=22-8-5

AC=9

since AC is the longest,

using Pythagoras theorem

AC^2=BC^2+AB^2

9^2=8^2+5^2

81=64+25

81=89

therefore, it is not a right angled triangle

8 0
3 years ago
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The first bricklayer can build a wall in 15 days. the second bricklayer can build the same wall in 10 days. how long will it tak
SSSSS [86.1K]
Around 8 4/7 days is what it takes
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2 years ago
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The sum of two numbers is 10. twice the first number is 4 more than twice the second. what are the two numbers?
Ludmilka [50]
X+ y = 10
2x = 2y+4

2x/2 = 2/2y+4/2
x = y + 2

x+y = 10
y+2+y=10
2y + 2 = 10
2y +2-2 =10-2
2y = 8
2y/2 =8/2
y = 4

x + y =10
x + 4 =10
x +4-4 =10-4
x = 6

Check
2x = 2y +4
2(6) = 2(4) +4
12 = 8+4
12= 12
6 0
3 years ago
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