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3 years ago

Haley substituted the values of a, b, and c into the quadratic formula below.

Mathematics

2 answers:

Marysya12 [62]3 years ago

7 0

The quadratic formula is x equals negative b plus or minus the square root of b squared minus four times a times c, all over 2a.
Looking at the equation, we can find the values for a, b, and c
a=7
b= -10
c= -2

So then putting that back into standard form, which is ax^2+bx+c, we know Haley's function in standard form is 7x^2-10x-2

trapecia [35]3 years ago

3 0

Answer:

a=7

b= -10

c= -2

Step-by-step explanation:

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During the past year in the maternity ward of a hospital in a large city, 1,254 males were born and 1,462 females. If we can ass

Afina-wow [57]

$\frac{1,254}{1,254+1,462} / \frac{1,462}{1,254+1,462}\\ \frac{1,254}{2,716} / \frac{1,462}{2,716}\\\frac{627}{1,358} / \frac{731}{1,358}$

Chance of boy: 627/1,358

Chance of girl: 731/1,358

6 0

3 years ago

Translate this sentence into an equation. 59 is the sum of 11 and Mai’s score

trapecia [35]

Answer:

11 + Mai's Score = 59

Step-by-step explanation:

You need to add 11 and Mai's score together to get 59, so with the values given we can make the equation 11 + Mai's Score = 59.

*depending on the question, Mai's score may need to be said as a letter variable, so:

If m = mai's score,

11 + m = 59

I hope this helped! :)

3 0

3 years ago

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What's 9-2x=35 please need help and explain it

Degger [83]

Answer:

x = -13

Step-by-step explanation:

9 - 2x = 35

-9 -9

-2x = 26

divide by -2

x = -13

6 0

3 years ago

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What is the volume of this cone?

olchik [2.2K]

Answer:

The volume of the cone is approximately 453.0 cm³

Step-by-step explanation:

The volume of a cone is one third that of a cylinder with the same height and radius. That gives us 1/3 πr²h, where r is radius and h is height.

However, we are not given the height of the cone, but the side length. We can work out the height using the Pythagorean theorem, as we have a right triangle with the height, base radius, and length. You may recall that the Pythagorean theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of it's other two sides:

$a^2 = b^2 + c^2$

So we can find the height of the cone with that:

$10.8^2 = 7.4^2 + h^2\\h^2 = 10.8^2 - 7.4^2\\h^2 = 116.64 - 54.76\\h^2 = 61.88\\h = \sqrt{61.88}\\h \approx 7.9$

Now that we have the cone's height, we can solve for its volume:

$v = \frac{1}{3} \pi r^2 h\\v = \frac{1}{3} \pi \times 7.4^2 \times 7.9\\v = \frac{1}{3} \pi \times 54.76 \times 7.9\\v = \frac{1}{3} \pi \times 432.6\\v = \pi \times 144.2\\v \approx 453.0 cm^3$

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3 years ago

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EASY 5POINT MATH QUESTION PLEASE SOLVE

nika2105 [10]

The equation x = 180 - (31 + 40) can be used. Because the angles are in a straight line ad straight line equals 180 degrees

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3 years ago

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