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3 years ago

Can anyone pls pls pls help me in dis pls I will mark u as brainliest!!!!

Mathematics

1 answer:

motikmotik3 years ago

5 0

Answer:

See below.

Step-by-step explanation:

Infinite Solutions:

$1. \:\:n=n\\\\2.\:\:y\cdot -6\cdot -3=2\cdot y\cdot 9\\\\3. \:\:5-9+3x=-10+6+3x\\\\4. \:\:2t+6=2(t+3)\\$

No Solutions:

$1. \:\:v+2=v-2\\\\2.\:\:\frac{1}{4}\left(20d+4\right)=5d\\\\3.\:\:3\left(n+1\right)=3n+1\\\\4.\:\:\frac{1}{2}+x=\frac{1}{3}+x$

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If 170% of a number is 680, what is 50% of the number

Bumek [7]

Answer:

200

Step-by-step explanation:

170% of x = 680

Set up an equation:

170/100 • x/1 = 680

1.7 • x = 680

1.7x = 680

x = 400

50% of 400

1/2 • 400 = 200

8 0

3 years ago

What is the maximum number of relative extrema a polynomial function can have?

creativ13 [48]

Relative extrema occur where the derivative is zero (at least for your polynomial function). So taking the derivative we get

20x3−3x2+6=0

 This is a 3rd degree equation, now if we are working with complex numbers this equation is guaranteed to have 3 solutions by the fundamental theorem of algebra. But the number of real roots are 1 which can be found out by using Descartes' rule of signs. So the maximum number of relative extrema are 1.

4 0

3 years ago

Researchers estimate that 15 out of every 25 customers at a store make purchases with a credit card. If the store has 600 custom

monitta

Answer:

360

Step-by-step explanation:

Number of customers who make purchases with a credit card

=15 out of every 25= $\frac{15}{25}=\frac{3}{5}$

The fraction 3/5 represents the part of the customer that makes purchases with credit cards.

Therefore if there are 600 customers tomorrow, 3/5 of them will use a credit card.

$\frac{3}{5} X 600=360$

360 credit card can be expected.

5 0

3 years ago

What is the slope of the line 6x + 8y = 12?

Brrunno [24]

I hope this helps you

6 0

2 years ago

Read 2 more answers

Use the quadratic formula to determine the exact solutions to the equation 6x^2 + 4x - 3 = 0

mezya [45]

To solve quadratics, the most correct and effective way, in my opinion, is the quadratic formula:

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

Plugging it in, we get:

 $\frac{-4\pm \sqrt{16+72} }{12} = \frac{-4\pm 2\sqrt{22}}{12} = \frac{-2\pm \sqrt{22} }{6}$

So the final answer is:

$\frac{ \sqrt{22}-2 }{6}$ and $\frac{-2- \sqrt{22} }{6}$

5 0

3 years ago