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GarryVolchara [31]
3 years ago
11

The question is on the picture

Mathematics
1 answer:
Ghella [55]3 years ago
7 0

Answer:6/10

Step-by-step explanation:

hope youdo well

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The graph of the function f(x) = (x-3)(x + 1) is shown.
Drupady [299]

Answer:

x < -1

Step-by-step explanation:

Draw a parabola (the graph) passing trough two x-intercepts -1 and 3 and open up.

8 0
2 years ago
The diameter of a circle is 20 miles. What is the angle measure of an arc bounding a sector with area 10​ square miles?
klio [65]
A=(απr^2)/360=(απd^2)/1440   (r^2=d^2/4)

α=1440A/(πd^2)

s=απd/360  (where s=arc length) so

s=(1440Aπd)/(360πd^2)

s=4A/d and since A=10mi^2 and d=20mi

s=(4*10)/20

s=2 miles
8 0
3 years ago
Which are the solutions of the quadratic equation?
Artemon [7]

Answer:

x_1=\frac{7+\sqrt{65}} {2}

x_2=\frac{7-\sqrt{65}} {2}

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}=7x+4  

equate to zero

x^{2}-7x-4=0  

so

a=1\\b=-7\\c=-4

substitute in the formula

x=\frac{-(-7)\pm\sqrt{-7^{2}-4(1)(-4)}} {2(1)}

x=\frac{7\pm\sqrt{65}} {2}

therefore

x_1=\frac{7+\sqrt{65}} {2}

x_2=\frac{7-\sqrt{65}} {2}

StartFraction 7 minus StartRoot 65 EndRoot Over 2 EndFraction comma StartFraction 7 + StartRoot 65 EndRoot Over 2 EndFraction

3 0
4 years ago
Read 2 more answers
You need to carpet a new office room. The new room is 12 feet by 15 feet 6 inches. A supplier delivered 20 square yards of carpe
Scrat [10]
Area of the room = 12 * 15.5 = 186 square feet

This equals 186 / 9  = 20 2/3 square yards

So you have not got enough capet tiles  to do the job.

You need another 1 carpet tile to finiush the job.
8 0
3 years ago
Read 2 more answers
A line with a slope of -3/5 and passing through (-5,-1)
Vanyuwa [196]

Answer: y=-3/5x-4

Step-by-step explanation:

We can substitute this into point slope form, which is y-y1=m(x-x1).

y-(-1)=-3/5(x-(-5)

y+1=-3/5(x+5)

y+1=-3/5x-3

y=-3/5x-4

3 0
4 years ago
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