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katrin [286]
3 years ago
12

A movie started at 5:25pm and

Mathematics
1 answer:
Lena [83]3 years ago
3 0

Answer:

7:20 pm

Step-by-step explanation:

25 + 55 = 80

80 - 60 = 20

Add 2 hours to 5

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Simplify <br><br>(5i²+8i+10) - (3i²-10i+3)​
Leona [35]

Answer:

2i^2+18i+7

Step-by-step explanation:

(5i^2+8i+10)-(3i^2-10i+3)

5i^2+8i+10-3i^2+10i-3

2i^2+18i+7

4 0
3 years ago
Which ordered pair (x, y) satisfies the system of equations shown below?
Dima020 [189]

Answer: (7, 0)

Step-by-step explanation:

We have the system of equations:

9*x - y = 63

x = y + 7

We can see that the "x" is isolated in the second equation, then we can replace it in the first equation to get:

9*x - y = 63

9*(y + 7) - y = 63

Now we have an equation that only depends on one variable, so we can solve it:

9*y + 63 - y = 63

8*y + 63 = 63

8*y = 63 - 63 = 0

y = 0/8 = 0.

Now we know the value of y, we can replace this in one of the initial equations to find the value of x, i will replace this in the second equation:

x = y + 7 = 0 + 7 = 7

Then the point that is a solution for the system of equations is (7, 0)

4 0
3 years ago
One day a store sold 36 sweatshirts. White ones cost​ $10.95 and yellow ones cost $11.50. In​ all, ​$404.65 worth of sweatshirts
Hatshy [7]

Answer:

17 white sweatshirts were sold and 19 yellow sweatshirts were sold.

Step-by-step explanation:

Let <em>w</em> represent the number of white sweatshirts sold and <em>y</em> represent the number of yellow sweatshirts sold.

We can write a system of equations to represent the situation.

Since the store sold a total of 36 sweatshirts, the sum of the white and yellow sweatshirts must total 36. So:

y+w=36

And since each white sweatshirt cost $10.95 and each yellow sweatshirt cost $11.50 and the total profit was $404.65:

10.95w+11.5y=404.65

Solve the system. I'll use substitution this time (though elimination will work just as perfect). From the first equation, subtract <em>w</em> from both sides:

y=36-w

Substitute this into the second:

10.95w+11.5(36-w)=404.65

Distribute:

10.95w+414-11.5w=404.65

Simplify:

-0.55w=-9.35

Divide both sides by -0.55:

w=17

So, 17 white sweatshirts were sold.

Using the modified equation, substitute:

y=36-(17)=19

Therefore, 17 white sweatshirts were sold and 19 yellow sweatshirts were sold.

7 0
3 years ago
(a + b - c )(a + b + c )
denis-greek [22]

Answer:

a^2+b^2-c^2+2ab

Step-by-step explanation:

(a+b-c)(a+b+c)=a^2+ab+ac+ab+b^2+bc-ac-bc-c^2=a^2+b^2-c^2+2ab

Hope this helps!

5 0
3 years ago
Read 2 more answers
What is the value of the expression? 56−(18÷34) as a fraction in simplest form
marta [7]
The value of the expression in simplest form is: 55 8/17.

Hope this helps! :D

~PutarPotato
7 0
4 years ago
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