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Crank
3 years ago
15

When does a quadratic equation in the form ax2 + b = c have only one real solution

Mathematics
1 answer:
trasher [3.6K]3 years ago
3 0

when the discriminant is = 0

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There are only about 400,000 African elephants left in the world today. They are
kozerog [31]

Answer:

In 50 years there'll be approximately 3582 elephants.

Step-by-step explanation:

If they are decreasing at a rate of 9% per year, it means it's population by year is:

population(0) = 400000

population(1) = population(0)*(100% - 9%) = population(0)*(91%)

population(2) = population(1)*(91%) = population(0)*(91%)*(91%) = population(0)*(91%)²

population(3) = population(2)*(91%) = population(0)*(91%)²*(91%) = population(0)*(91%)³

And so on, so the number of population as years passes is:

population(n) = population(0)*(91/100)^n

In this case we want to know the population of elephants when n = 50, so we have:

population(50) = 400000*(0.91)^50 = 3582.033

In 50 years there'll be approximately 3582 elephants.

5 0
4 years ago
Alona has some wood cutouts of two different shapes - square and triangle. Each square cutout is 6 mm thick and each triangular
kobusy [5.1K]

Answer:

18

Step-by-step explanation:

Volume is a product of cross-sectional area and height and relresented as V=Ah where V is volume, A is cross-sectional area and h is height.

For the square, since each has a thickness of 6mm then for 24 of them the height will be 24*6=144 mm

Since the volume and cross sectional area of the triangle should be the same, then the height should also be the same.

Since for the triangle each has a thickness of 8mm then the number requred to achieve a height of 144 mm will be 144/8=18 stacks

7 0
4 years ago
3/m = 45/50 HELP, WILL GIVE BRAINLIST IF PERFECT ANSWER, its hard
Lana71 [14]

Answer:

m=10/3

Step-by-step explanation:

[3/(10/3)]3=9/10

(9/10)5=45/50

7 0
2 years ago
Find the product of (4x − 3)(2x2 − 7x + 1).
bekas [8.4K]
(4x-3)(2x²-7x+1)
8x³-28x²+4x-6x²+21x-3
8x³-28x²-6x²+4x+21x-3
8x³-34x²+25x-3
Hope This Helps and God Bless!
6 0
3 years ago
Read 2 more answers
Can you help me with this it’s been due
Mars2501 [29]

- (4, 5) and (4, -2) -

We can find the slope by using rise/run

m=\frac{y_2-y_1}{x_2-x_1}\\m=\frac{5-(-2)}{4-4}  \\

As expected, the slope is indeed undefined. The denominator can't be 0 but this one has denominator that's 0 which is undefined.

Meaning that, when the x-value for both ordered pairs are the same, the slope will be undefined.

For the graph, It should be like this below in the picture.

4 0
3 years ago
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