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tia_tia [17]
3 years ago
11

Help with question 1 plssssss

Mathematics
1 answer:
rodikova [14]3 years ago
5 0

its answer comes in point

Step-by-step explanation:

3a+5a+12=90

8a=90-12

8a=78

a=78/8

a=9.75

if it is wrong than tell me plzzz

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WILL GIVE BRAINIEST <br> NEED HELP ASAP<br> DUE IN 10 MINS
tensa zangetsu [6.8K]

Answer:

Scientist B

Step-by-step explanation:

1 kg = 2.2 lbs

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So let's convert Scientist B's data.

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Scientist A

1kg salt

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Scientist A Scientist B

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5 0
3 years ago
Read 2 more answers
The sum of the digits of a two-digit number is 12. The number formed by reversing the digits is 54 more than the original number
andreyandreev [35.5K]

Answer:

39

Step-by-step explanation:

let the 2 digit number be ab = 10a + b ( considering place value )

The reversed  2 digit number is ba = 10b + a

The sum of the 2 digit number is

a + b = 12 ( subtract b from both sides )

a = 12 - b → (1)

Expressing as an equation

ba = ab + 54 , that is

10b + a = 10a + b + 54

Substitute a = 12 - b into the equation

10b + 12 - b = 10(12 - b) + b + 54 , simplify both sides

9b + 12 = 120 - 10b + b + 54

9b + 12 = - 9b + 174 ( add 9b to both sides )

18b + 12 = 174 ( subtract 12 from both sides )

18b = 162 ( divide both sides by 18 )

b = 9

Substitute b = 9 into (1)

a = 12 - 9 = 3

Thus

the original 2 digit number = ab = 39

The reversed 2 digit number = ba = 93

which is 54 more than the original number

7 0
3 years ago
83 + what = 180 :3 ^-^
Mazyrski [523]
97 is the answer to your question
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3 years ago
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Answer:

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3 0
3 years ago
Help you don’t have to explain
kolezko [41]

Answer:

-4

Step-by-step explanation:

umm you might want to learn this. I cheated in middleschool/ highschool and was an honor student. I am barely surving college though, you'll need math for your general education requirement.

6 0
3 years ago
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