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Margarita [4]
3 years ago
11

How many real solutions does p^2-5p+7=0 have

Mathematics
1 answer:
jekas [21]3 years ago
8 0

Let's  work out the discriminant  b^2 - 4ac:-

D =  (-5)^2 - 4*1*7  =  25 - 28 = -3

A negative discriminant  shows that there are NO real solutions Answer

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Find the lateral area and surface area of cone
worty [1.4K]

Answer:

\large\boxed{L.A.=168\pi\ in^2}\\\boxed{S.A.=232\pi\ in^2}

Step-by-step explanation:

The formula of a lateral area of a cone:

L.A.=\pi rl

r - radius

l - slant height

The formula of a surface area of a cone:

S.A.=\pi r^2+\pi rl

We have r= 8in and l = 21in. Substitute:

L.A.=\pi(8)(21)=168\pi\ in^2

S.A.=\pi(8^2)+168\pi=232\pi\ in^2

3 0
3 years ago
The area of a parallelogram is 72 inches. what is the height?
bulgar [2K]
Area of a parallelogram is base x height
9x8=72
the height should be 8?
4 0
2 years ago
Can I get Help on explaination of this?
storchak [24]

Answer:

The measure of the outside angle is the sum of the two inside angles:

68+52=120

Or you could do it the long way and find the third angle inside the triangle then do 180 minus that but this is easier.

Step-by-step explanation:

7 0
3 years ago
The price of an iPod is reduced in a sale from £200 to £145. The price of the iPod is further decreased by 22% two months later.
mixer [17]

Answer:

£113.1

Step-by-step explanation:

The price of an iPod is reduced in a sale from £200 to £145.

The price of the iPod is further decreased by 22% two months later. Find the new price.

The above question is solved below:

We are to find the new price.

The percentage decrease = 22%

Hence:

£ 145 × 22% = £31.9

The new price is:

£145 − £31.9 = £113.1

4 0
3 years ago
Help please i will give brainlist
Feliz [49]

Answer:

Angle 1 is 67 and Angle 2 is 46

Step-by-step explanation:

5 0
3 years ago
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