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Oliga [24]
3 years ago
15

Someone pls help... I'm terrified I'm gonna fail and this test is literally my life...

Mathematics
1 answer:
guajiro [1.7K]3 years ago
6 0

Answer: it is 49 or -49

Step-by-step explanation:

if you divide 49 by 7 it comes out to seven because 7 times 7 is 49.

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Mr grain left for work at 7:15 am. twenty five mintutes later he aririved at his work. what time did mr giarmo arrive at his
Genrish500 [490]
25 minutes (0:25) added to 7:15.

7:15 + 0:25 = 7:40
Also expressible as 15+25

He arrived at 7:40AM.
5 0
3 years ago
What is the first thing you need to add 1/9 + 5/6
Pavlova-9 [17]
Find the greastest common factor
7 0
3 years ago
Read 2 more answers
The LCM of 2 numbers is 60 and 1 of the numbers is 7 less than the other number. What are the numbers?
Phoenix [80]
Let's represent the two numbers by x and y.  Then xy=60.  The smaller number here is x=y-7.

Then (y-7)y=60, or y^2 - 7y - 60 = 0.  Use the quadratic formula to (1) determine whether y has real values and (2) to determine those values if they are real:

discriminant = b^2 - 4ac; here the discriminant is (-7)^2 - 4(1)(-60) = 191.  Because the discriminant is positive, this equation has two real, unequal roots, which are
        -(-7) + sqrt(191)
y = -------------------------
             -2(1)

and 

        -(-7) - sqrt(191)
y = ------------------------- = 3.41 (approximately)
             -2(1)

Unfortunately, this doesn't make sense, since the LCM of two numbers is generally an integer.


Try thinking this way:  If the LCM is 60, then xy = 60.  What would happen if x=5 and y=12?  Is xy = 60?  Yes.  Is 5 seven less than 12?  Yes.






5 0
3 years ago
An 18 ounce box of cereal costs $2.76. How many ounces should a box priced at $2.07 contain?
Darya [45]
First you find the unit rate. (Divide 2.76 by 18)
You will find out that each ounce costs $0.15

Then divide 2.07 by 0.15.

The answer is 13.8 ounces.

5 0
3 years ago
I'll give brainliest<br><br><br> -4n(5n+6)-5(3+3n)
motikmotik

Answer:

-20n^2-39n-15

Step-by-step explanation:

8 0
2 years ago
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