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Alchen [17]
3 years ago
7

Which is a quadratic function? A. 3x+y^2=5 B. y=3x+5 C. x=3y+5 D. 3x^2+y=5

Mathematics
1 answer:
xxMikexx [17]3 years ago
3 0
I would say that all are
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Which Greek geometer founded a philosophical society that devoted itself to the study of mathematics
nexus9112 [7]
Pythagoras was the greek geometer.
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3 years ago
Solve: 2x-3= 5(x+ 6)<br> OA. x= -9<br> OB. x=-11<br> OC. x=-3<br> OD. x- 33
alexgriva [62]

Answer: the correct answer is b x=11

Step-by-step explanation:

2x - 3x + 3x = 5x + 30 + 3

2x = 5x + 33

( 2x - 5x = 5x +  33 - 5x

(1/3)-3x = 33x (1/3)  Here we divide it but since it is 1/3, it is the same as dividing 3 divided by 11

1x = 11

x=11

8 0
3 years ago
Read 2 more answers
A fabric store has 80 3/8 yards of a particular fabric. About how many pairs of curtains could be made from this fabric if each
Keith_Richards [23]
20 because 19 16/33 is the exact answer. Since they ask about how much that can be rounded up to 20
4 0
3 years ago
A cell phone store sold 450 newly released cell phones in three hours. This was 30% of the number of cell phones sold that day.
Vitek1552 [10]

Answer:

we have 3 things here. 30% out of 100% of the 450 phones

In order to find the missing percent we multiply the 450 by 100 and divide its product by 30

The answer is 1500

Step-by-step explanation:


8 0
3 years ago
A ladder is leaning against a building.The distance from the bottom of the ladder to the building is 6ft shorter than the length
Akimi4 [234]

Answer:

15 ft

Step-by-step explanation:

Hi, the illustration for the problem is a right triangle with:

hypotenuse (C)= the length of the ladder = L

horizontal side(A) = distance from bottom of the ladder to the building = L - 6

vertical side(B) = distance from the top of the ladder to the bottom of the building = L - 3

So, we can use Pythagoras formula:

A2 +B2= C2

(L – 6 )² + (L-3)² = L²

L²-12L+36+L²-6L+9 =L²

L2 -18L+45 =0

APPLYING QUADRATIC FORMULA WE OBTAIN:

L =15 OR L=3

If L=3

Vertical side = L-3 = 0 (Length can´t be 0)

So L=15

6 0
3 years ago
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