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kati45 [8]
3 years ago
15

Need help , don’t understand !!

Mathematics
1 answer:
mixer [17]3 years ago
5 0

Quadratic Formula is (-b ±√(b²-4ac))/2a

With that being said:

y=2x²-5x-1 is in the correct form of ax²+bx+c

Now just plug in:

5±√(25-4(2 x-1))

5± √25+8

(5±√33)/2(2)

Answer is D

100% Sure


Brainliest?

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Serga [27]

Answer:

y-intercept = 0.75

Step-by-step explanation:

y = mx + b

b = y-intercept

1. Restructure equation format

y = 4x + 0.75

2. Find b

y = 4x<u> + 0.75</u>

3 0
4 years ago
Question 2 2 points)
kvv77 [185]

Answer:

8 yards

Step-by-step explanation:

8 yards

on first down it was first and 10 but gained 7

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3 0
3 years ago
Which expressions are less than 7/8? Choose all answers that apply: 7/8 x 9/15 7/8 x 3/4 7/8 x 9/9 7/8 x 4/3 ​
seraphim [82]

Question

Which expressions are less than 7/8? Choose all answers that apply:

a) 7/8 x 9/15

b) 7/8 x 3/4

c) 7/8 x 9/9

d) 7/8 x 4/3 ​

Answer:

a) 7/8 x 9/15

b) 7/8 x 3/4

Step-by-step explanation:

We are asked to find which expression are least than 7/8

Solving 7/8 = 0.875

We would evaluate the given option one after the other.

a) 7/8 x 9/15

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b) 7/8 x 3/4

= 21/32 = 0.65625

c) 7/8 x 9/9

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d) 7/8 x 4/3

= 7/6 = 1.1666666667

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option a) a) 7/8 x 9/15 and b) 7/8 x 3/4

6 0
3 years ago
Seven less than the quotient of a number, x, and twelve is five times the number. Which answer represents this situation??
erica [24]

Answer:

Option b is correct.

Step-by-step explanation:

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Here, the number is x

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Seven less than the quotient of a number, x, and twelve is expressed as,  \frac{x}{12}-7

Five times the number mean, 5x

Therefore, we have an equation in the form of <em>x</em>  from the given condition as:

\frac{x}{12}-7=5x .







8 0
3 years ago
Read 2 more answers
Find the partial derivatives of the function w=4r2+6s2+
lyudmila [28]
I'm taking the liberty of editing your function as follows:  <span>w=4r^2+6s^2, where I use " ^ " to indicate exponentiation.

The partial of w with respect to r is 8r.  That with respect to s is 12s.</span>
8 0
3 years ago
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