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3 years ago

Write an equation for the line graphed.

Mathematics

1 answer:

Kay [80]3 years ago

6 0

Answer:

the answer is "d" because the x region is negative 2 and the y region is a positive1

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Use the quadratic formula to solve. Round to the nearest tenth if necessary. 2x^2 -3x -7 = 0

abruzzese [7]

The quadratic formula is:

$\frac{-b + \sqrt{b^2 - 4ac} }{2a}$ and $\frac{-b - \sqrt{b^2 - 4ac} }{2a}$

In this case, a = 2, b = -3, and c = -7

So, we can plug in the numbers to get:

$\frac{-(-3) + \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}$ and $\frac{-(-3) - \sqrt{(-3)^2 - 4(2)(-7)} }{2(2)}$

Simplifying, we get:

$\frac{3 + \sqrt{65} }{4}$ and $\frac{3 - \sqrt{65} }{4}$

You need to use a calculator to find what these would be in decimal form. The answer, rounded to the nearest tenth, is: x = 2.8, x = -1.3

8 0

2 years ago

Find the surface area of a smooth golf ball with the minimum diameter allowed by the United States golf association

meriva

Surface area o fthe ball = 4 * 3.14 * radius^2

if diameter = 1.680 then radius = 1/2 * 1.680 = 0.84

so surface area = 4 * 3.14 * 0.84^2 = 8.862

3 0

2 years ago

Victoria has $2.90 in quarters, dimes and nickels. The numbers of nickels is one more than six times the number of quarters, and

maria [59]

Answer:

Step-by-step explanation:

She has 290 cents.

Nickels: 6x+1

Quarters: x

Dimes: 4x

Now that we've converted it algebraically, we can add them

6x+1 + x + 4x = 11x+1 = 290

11x = 289

x = 289/11

let me know if incorrect, i will fix

8 0

2 years ago

[50 points!]

marshall27 [118]

Answer:

1/3

Explanation:

P(Freshman | Boy)

Freshman = 4

Boy = 12

⇒ Probability = Number of favorable outcomes ÷ Total number of possible outcomes

P(Freshman | Boy) = freshman/total boys

P(Freshman | Boy) = 4/12

P(Freshman | Boy) = 1/3

4 0

1 year ago

Read 2 more answers

9/11=?/22 A.12 B.4 C.9 D.18

Yanka [14]

9/11 is equal to 18/22, so then D.

8 0

3 years ago