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3 years ago

Solve for b. 7b = 35

Mathematics

2 answers:

svetoff [14.1K]3 years ago

6 0

Answer:

$b = 5$

Step-by-step explanation:

$7b = 35 \\ \frac{7b}{7} = \frac{35}{7} \\ b = 5$

Darya [45]3 years ago

3 0

Answer:

b = 5

Step-by-step explanation:

to get b, you see that is multiplied by 7. to get rid of the 7, you have to divide both sides by 7. this is because 7/7 = 1, so you would just have b. then, 35/7 equals 5, and it is on the other side of the equal sign, so you would have b = 5.

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Answer:

Step-by-step explanation:

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Ashley found 78 rocks on Monday. on Tuesdays Devin found 45 rocks how many did the find both days

scoundrel [369]

Lets look at the info we have:-

Ashley found 78 rocks on Monday.
Devin found 45 rocks on Tuesday.

Question:-

How many did they find both days?

The key word for this is "both". So we need to add here. Lets add:-

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So, Ashley and Devin together found 123 rocks.

Hope I helped ya!! xD

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3 years ago

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motikmotik

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3 years ago

The four digit numeral 3AA1 is divisible by 9. What digit does A represent

dexar [7]

Answer:

A = 2, the number is 3221

Step-by-step explanation:

In order for the number to be divisible by 9, the sum of it's digit has to be divisible by 9.

In our case, $4+A+A+1= 9k$ where k is an integer. the easiest way happens when k=1

$5+2A= 9 \rightarrow 2A=4 \rightarrow A = 2$

Higher values of k will likely most work (with k=2 you get A to be a non-integer, which can't work since it's the digit of a number, and with higher values of K you're not getting a number in base 10.

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