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kenny6666 [7]
3 years ago
8

PLEASSS HELPPPP

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer:

-11 + 4

Step-by-step explanation:

When you subtract a negative the sign will  switch to plus, so it this case you would switch the - (-4) to a + 4 but you don't change the -11 at the front.

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Last year there were 48 science projects submitted by students at a science fair. This year there are 52 science projects.
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Answer:

52 - 48 = 4

Around 7%

(Please tell me if this is wrong)

4 0
3 years ago
Three horses, call them a, b, and c, are going to race against each other. the probability that a will win the race is 1⁄5 and t
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6 0
3 years ago
Jill sold half of her comic books and then bought sixteen more. She now has 36. With how many did she begin?
Alex777 [14]

Answer:

\frac{1}{2}x + 16 = 36

40 comic books

Step-by-step explanation:

Let x be the Jill comic books.

Given:

Jill sold half of her comic books and then bought sixteen more. She now has 36.

\frac{1}{2}\ (Jill\ books) + 16\ more\ books = 36

\frac{1}{2}\ (x) + 16 = 36

\frac{1}{2}x + 16 = 36

Therefore the algebraic equation of the given statement.

\frac{1}{2}x + 16 = 36--------(1)

Now we solve above equation for x.

Subtract by 16 both side of the equation 1.

\frac{1}{2}x + 16 -16 = 36 -16

\frac{1}{2}x = 20

Multiply by 2 both side of the above equation.

2\times \frac{1}{2}x =2\times 20

x = 40

Therefore, Jill had 40 comic books.

8 0
2 years ago
Mel received notice that his monthly health care rate will increase 15% next year. if mel currently pays $200 per month for heal
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Multiply 200 by .15, since 15% is .15 as a decimal. 200 x .15 = 30. This means that his health care rate will increase by $30 next year.
8 0
3 years ago
Which object has a mass of approximately 450 grams?
rewona [7]
I would say that the tree is 450 grams
4 0
3 years ago
Read 2 more answers
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