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Alina [70]
3 years ago
6

Find the sum of -3x^2-x-10 and 10x^2+x-10

Mathematics
2 answers:
Jobisdone [24]3 years ago
6 0

Answer:

7x^2-20

Step-by-step explanation:

Dvinal [7]3 years ago
5 0

Answer:

1.<em> -2</em>

<em>2.-10</em>

Step-by-step explanation:

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A small theater had 6 rows of 26 chairs each. An extra 9 chairs have just been brought in. How many chairs are in the theater no
Andrej [43]

Answer:165

Step-by-step explanation:

6•26 = 156. 156+9=165

6 0
3 years ago
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Determine both the x and y intercepts. Please help! Will mark brainliest!
Mademuasel [1]

Answer:

y-intercept: (0, 2.5)

x-intercept: (1.67, 0)

Step-by-step explanation:

Right now, you have 3x + 2y = 5. You want to change it into slope-intercept form to make the problem easier to solve.

2y = -3x + 5

y = -3/2x + 5/2

From here, you can see that the y-intercept is (0, 5/2). You can also say that the y-intercept is (0, 2.5).

To get the x-intercept, substitute 0 for y.

0 = -3/2x + 5/2

3/2x = 5/2

3x = 5

x = 5/3

So, the x-intercept is (5/3, 0). You can also say that the x-intercept is (1.67, 0).

Hope this helps!

3 0
4 years ago
Read 2 more answers
PLEASE HELP ME ON MY FIRST QUESTION!, SHOW WORK PLEASE!!
kvasek [131]

Answer:

Solution given:

radius [r]=2cm

height [h]=8cm

total surface area of cylinder=?

we have

total surface area of cylinder=2πr²+2πrh

  • 2πr(r+h)
  • 2π*2(2+8)
  • 40π or 125.66cm²

<u>total surface area of cylinder</u><u>40π or 125.66cm²</u><u>.</u>

3 0
3 years ago
Read 2 more answers
2+2Divided by 10,000×4000-10<br> Divided by 10,000×4000-10
marshall27 [118]

Answer:

-11.2

Step-by-step explanation:

6 0
3 years ago
You bought a magazine for $3 and two notepads. You spent a total of $13. How much did each notepad cost? *
sweet-ann [11.9K]

Answer:

$5

Step-by-step explanation:

We want to find the cost of a notepad considering a magazine costs $3 and we buy 2 notepads and the total cost of the magazine and the 2 notepads is $13 so we can set up an equation to represent this situation. Let 'n' be notepads and that's the value we are solving for so,

⇒ Form the equation

→ 2n + 3 = 13

⇒ Minus 3 from both sides to isolate 2n

→ 2n = 10

⇒ Divide both sides by 2 to find the cost of one notepad

→ n = 5

The cost of one notepad is $5 considering that a magazine cost's $3 and two notepads and total is $13.

4 0
3 years ago
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