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NNADVOKAT [17]
3 years ago
8

What is the value of the dicsriminant of x^2-7x+4?

Mathematics
1 answer:
Aleks [24]3 years ago
8 0

Answer:

33.

Step-by-step explanation:

x^2 - 7x + 4.

The discriminant of the above

= b^2 - 4ac

=  (-7)^2 - 4*1*4

= 49 - 16

= 33.

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Use the given information to find the length of a circular arc. Round to two decimal places.the arc of a circle of radius 11 inc
sattari [20]

Answer:

The length of the circular arc is 8.64 inches

Step-by-step explanation:

Length of circular arc (L) = central angle/360° × 2πr

central angle = pie/4 = 45°, r (radius) = 11 inches

L = 45°/360° × 2 × 3.142 × 11 = 8.64 inches (to two decimal places)

7 0
3 years ago
Read 2 more answers
I'm confused about how to find x.
NikAS [45]
Hi! so you would find x by adding the corners up to 180 degrees.

steps:
Add the corners
90+(2x+1)+(5x+5)
7x+96=180
then subtract 96 from 180
you’d get 7x = 84
then divide 7 on both sides and get x=12
7 0
3 years ago
Melina graphed a line which passes through the points (-4, 2) and (6, 8). What is the slope of the line?
Ulleksa [173]

Answer:

The answer is

<h2>\frac{3}{5}  \\</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1}  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-4, 2) and (6, 8)

The slope is

m =  \frac{8 - 2}{6 + 4}  =  \frac{6}{10}  =  \frac{3}{5}  \\

We have the final answer as

\frac{3}{5}  \\

Hope this helps you

7 0
3 years ago
-3(4x+5)<br><br> a- 7x+15<br> b- 7x-15<br> c- -12x-15<br> d- -12x+15
Alexandra [31]
C, because everything inside the parenthesis is multiplied by -3.
3 0
3 years ago
Someone please answer will mark brainliest thank you
Vanyuwa [196]

Answer:

Since \sqrt{36} = 6 and \sqrt{49} = 7 it is known that \sqrt{43} is between 6 and 7.

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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