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Neporo4naja [7]
2 years ago
14

X^2+3x−10=0 (solve for x)

Mathematics
1 answer:
kap26 [50]2 years ago
7 0

Answer:

x1=2 x2=-5

Step-by-step explanation:

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A pencil is 7 1/2 inches long. How long is the pencil in centimeters?
svetoff [14.1K]
The pencil is 19.05 centimeters.
7 0
1 year ago
A local pizzeria offers 15 toppings for their pizzas and you can choose any 3 of them for one fixed price. How many different ty
Shtirlitz [24]

Answer:

  455 or 680, depending

Step-by-step explanation:

If we assume the three choices are different, then there are ...

  15C3 = 15·14·13/(3·2·1) = 35·13 = 455

ways to make the pizza.

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If two or three of the topping choices can be the same, then there are an additional ...

  2(15C2) +15C1 = 2·105 +15 = 225

ways to make the pizza, for a total of ...

  455 + 225 = 680

different types of pizza.

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There is a factor of 2 attached to the number of choices of 2 toppings, because you can have double anchovies and tomato, or double tomato and anchovies, for example, when your choice of two toppings is anchovies and tomato.

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nCk = n!/(k!(n-k)!)

6 0
3 years ago
Find x and Y pls help
lisabon 2012 [21]

Answer:

Step-by-step explanation:

Comment

The angle supplementary to x and 3x are equal.

Supplementary angles = 180

Solution

x + 3x = 180

4x = 180                  Divide by 4

4x/4 = 180/4

x = 45

The angle supplementary to x is 3x

3x = 3*45

3x = 135

This angle is vertically opposite y. Vertically opposite angles are equal. So  y = 135

Answer

x = 45

y = 135

3 0
1 year ago
I PROMISE I WILL LET EVERYBODY KNOW WHAT GRADE I GET WHEN I KNOW
makkiz [27]

Answer:

are those 3 different question of just one?

Step-by-step explanation:

6 0
2 years ago
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What has the same solution as -4(6)
Ksenya-84 [330]

Answer:-12(2)

Step-by-step explanation: the solution to the question-24 and 12 times 2 is 24 just add a negative to one number

5 0
3 years ago
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