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valina [46]
3 years ago
12

(7u^2-6u+2) + (-3u^2+u+5)=​

Mathematics
1 answer:
polet [3.4K]3 years ago
4 0

Answer:

4u^2-5u+7.

You just remove the parentheses because it's adding. If it were subtraction, you would need to distribute the minus.

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# 6
zhuklara [117]

9514 1404 393

Answer:

  y = 5x - 7

Step-by-step explanation:

We can make an equation for the perpendicular line by swapping the x- and y-coefficients, negating one of them. Then we can use that form with the given point to see what the constant is.

  10x -2y = ...

Removing a common factor of 2 gives ...

  5x -y = 5(2) -(3) = 7 . . . .  using (x, y) = (2, 3), we can find the constant

Solving for y, we get ...

  5x -7 = y . . . add y-7

  y = 5x -7 . . . write in the desired form

5 0
3 years ago
For every 1,000 pounds of water in the ocean, there are 35 pounds of salt. If a person takes 173 pounds of ocean water, how much
Brums [2.3K]

Answer:

C. 6.06

Step-by-step explanation:

173/1000=.173

.173*35== 6.06

8 0
3 years ago
Find the gradients of lines A and B
mel-nik [20]

Step-by-step explanation:

the \: gradient \: of \: line \: a \: is

m =  \frac{4}{1 }  \\ m = 4

the \: gradient \: of \: line \: b \: is

m =  \frac{ - 2}{1}  \\ m =  - 2

6 0
3 years ago
At a football stadium, 25% of the fans in attendance were teenagers. If there were 130 teenagers at the football stadium, what w
Trava [24]

Answer:

Total number of people in the stadium = 520

Step-by-step explanation:

Let the total number of people in the stadium = x

Since, 25% of the fans are teenagers, number of teenagers in the stadium

= 25% of x

= \frac{25}{100}\times x

= 0,25x

If the number of teenagers in the stadium = 130

0.25x = 130

x = \frac{130}{0.25}

x = 520

Therefore, total number of fans in the stadium = 520.

3 0
4 years ago
What is +(-4)? I'm taking a test and I would love some help here please
worty [1.4K]

Answer:

4

Step-by-step explanation:

The absolute value is the distance between a number and zero. The distance between  -4 and 0 is 4.

6 0
3 years ago
Read 2 more answers
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