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UNO [17]
3 years ago
7

Mary is 2 times older than Bob and Bob is 5 years older than Sally. Sally is 10 years old how old is Bob

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
8 0

Answer:

Bob is 15 years old.

Step-by-step explanation:

If Sally is 10 years old and Bob is five years older than Sally then we just need to add 10+5=15.

Hope this helps!!

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Find the value of B - A if the graph of Ax + By = 3 passes through the point (-7,2), and is parallel to the graph of x + 3y = -5
Gnoma [55]

The required simplified value of B - A = -6.

<h3>What is simplification?</h3>

The process in mathematics to operate and interpret the function to make the function simple or more understandable is called simplifying and the process is called simplification.

Since, line Ax + By = 3 and x + 3y = -5 are parallel than slope of both the line will be same,
m = -1/3 = -A/B
From above
A = B/3  - - - - -(1)


Now line Ax + By = 3 passed through the point (-7, 2). So,
-7A + 2B = 3
from equation 1
-7B/3 + 2B = 3
-B/3 = 3
B = -9
Now put B in equation 1
A = -9 / 3
A = -3

Here,
B - A = -9 + 3 = -6

Thus, the required simplified value of B - A = -6.

Learn more about simplification here: brainly.com/question/12501526

#SPJ1



7 0
1 year ago
7/8x=42<br><br> What is the value of x?
Artist 52 [7]
\frac{7}{8}*x=42 \\ \\x=42: \frac{7}{8} \\ \\ x=42*  \frac{8}{7} \\ \\ x= \frac{336}{7} \\ \\ \boxed{x=48}
3 0
3 years ago
Erin caught 8 more fish than Juan caught
Gennadij [26K]

Answer:

Second option: Equation, because 8 plus the fish that Juan caught equals  the fish that Erin caught

Step-by-step explanation:

You can for sure make an equation, all you need is to have variables and that's allowed in this case.

E=J+8

E=Erin J=Juan

7 0
3 years ago
Price of an item has been reduced by 60% the original price was $20 what is the price of the item now
____ [38]
The price would be $8
8 0
3 years ago
One half of the sum of r and 2
hjlf

(r + 2) ÷ 1/2

Hope this helps you

Brainliest would be appreciated!

-AaronWiseIsBae

8 0
3 years ago
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