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Vladimir79 [104]
3 years ago
9

20. Add (2x2 - 7) + (7x2 + 3).​

Mathematics
1 answer:
kolezko [41]3 years ago
7 0

Answer: The answer is positive 14

Step-by-step explanation:

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Five year old Michelle weighs 75 decagrams. What is her weight in centigrams?
Svet_ta [14]
It should be 75000. I don’t know. I looked this up but I still hope this helps!
3 0
3 years ago
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If 2a-b:2a+b=1:2find the value of a:b​
weqwewe [10]

Answer & Step-by-step explanation:

2a - b : 2a + b = 1 : 2

2a - b = 1

-                         Elimination

2a + b = 2

-b - (b) = -1

-2b = -1

b = 0.5

---------------------------------------------------------------------------------

2a + b = 2           Substitution

2a + 0.5 = 2

2a = 1.5

a = 0.75

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a:b

0.75 : 0.5

or

3/4 : 1/2

Hope this helps!!!

 

3 0
4 years ago
The difference between homogeneous and heterogeneous mixtures is that chemical bonds are formed in homogeneous mixtures.
Fudgin [204]
The answer would be false.
3 0
3 years ago
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Rounded 3,428,583 rounded to the nearest 10,000
densk [106]
Since you want to round to the 10,000 place, you'll want to look at the 2 and the 8 that are next to each other. The 8 makes the two a 3 because it is greater than 5, which gives you 3,430,000. Hope this helped!
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4 years ago
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rename 1/2 and 2/3 as fractions with denominators of 6.then add the renamed fractions. write the sum as a mixed number.
monitta

Answer:

1 and 1/6

Step-by-step explanation:

To rename a fraction you multiply both numbers by however many times the original denominator goes into the new one.

2 goes into 6 three times.

1 times 3 is 3

and 2 times 3 is 6

so 1/2=3/6

3 goes into 6 twice

2 times 2 is 4

and 2 times 3 is 6

so 2/3=4/6

to add fractions you add the numerators while keeping the denominators the same.

3+4=7 so:

3/6+4/6=7/6

6/6=1

so 7/6 contains 1 whole

once you take that out you have 1/6 left over

4 0
3 years ago
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