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Alina [70]
2 years ago
13

Please help my grade is a 68 i need a 70 at least

Mathematics
1 answer:
aleksklad [387]2 years ago
8 0

Answer:

10s²-6s+9

Step-by-step explanation:

C = -3 + 5s²

B = -2s + 5

2(-3 + 5s²) = -6 + 10s²

3(-2s + 5) = -6s + 15

10s² - 6s + 9

You might be interested in
Write an equation for a line that is parallel to 2x+5y=15 and passes through the point (-10, 3)​
Lyrx [107]

Answer:

The equation of the line is,

y =  -  \frac{2}{5} x - 1

Step-by-step explanation:

First, you have to write it in a form of y = mx + b :

2x + 5y = 15

5y = 15 - 2x

y = 3 -  \frac{2}{5} x

y =   - \frac{2}{3} x + 5

When both lines are parallel to each other, they will have to same gradient value. So the equation of the line is y = (-2/5)x + b. Next, you have to find the value of b by substutituting (-10,3) into the equation :

y =   - \frac{ 2}{5}x + b

let \: x =  - 10,y = 3

3 =  -  \frac{2}{5} ( - 10) + b

3 = 4 + b

3 - 4 = b

b =  - 1

3 0
3 years ago
Read 2 more answers
2xy when x = 5 and y = -3
Stels [109]

Answer:

the answer is -30

Step-by-step explanation:

2xy=2*5*-3

= -30

5 0
3 years ago
Please help me answer this step by step would be helpful
UNO [17]

Answer:

Step-by-step explanation:

The viniculum in a fraction represents subtraction with exponents.

Subtracting exponents gives us  3^12/3^8 * 3^2

Simplifying gives 3^12/3^10. Then, we can achieve 3^12 - 3^10.

This equals 3^2.

3^2 = 9.

So 9 is the answer of your question.

6 0
2 years ago
Please tell me the answer!! I NEED IT NOW ILL GIVE 20 points PLEASE!!
zhenek [66]

Answer:

i pretty sure its the last one

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Anybody know geometry?
Rudik [331]

hi as a person who is taking geometry, i think i can help

Answer:

7x-3=5x+1 ->x=2

Step-by-step explanation:

to find the x, you would put both equations together like how it is shown above, then try and get x to one side

7x-3=5x+1

   +3      +3

7x=5x+4

-5x -5x

2x=4

/2   /2

x=2

5 0
2 years ago
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