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3 years ago

a washer and dryer combination cost $890 if the washer costs $90 more than the dryer what does each Appliance cost

Mathematics

2 answers:

maksim [4K]3 years ago

8 0

Answer:

dryer400 and washer 490

Step-by-step explanation:

vredina [299]3 years ago

3 0

The washer costs 535 dollars if I am correct. I don’t know if I am.

Basically since the total is 890 and you want to find the cost of two different things, you divide 890 by 2.

This then gives you 445 which is half of 890 but we are not done yet. The washer costs 90$ MORE than the dryer so we have to add 90 to 445.

445 + 90 = 535

So the washer is 535$. But the question is also asking for the cost of the dryer. Since 535$ is just some money out of the 890$ that is the amount of money paid all togther, you subtract 890 - 535 to find to cost of the dryer.

890 - 535 = 355

So the dryer costs 355$ and the washer costs 535$. I hope this helps. Again, I am not completely sure if this is right because I don’t know which type of math you are doing but I hope this helps you.

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M(x)=x(x+6)<br> p(x)=x(x+3)²-9<br><br> Show that m(x) and p(x) are equivalent

mamaluj [8]

Answer:

m=x+6

Step-by-step explanation:

Let's solve for m.

mx=x(x+6)

Step 1: Divide both sides by x.

2x/x= x²+6x/x

m=x+6

Hope this helps :)

PLS BRAINLIEST

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2 years ago

Does the function f(x) = 2x^2− 6x + 9 have a minimum or a maximum? Identify its value.

exis [7]

Answer:

minimum value of function is $\frac{45}{8}$ .

Step-by-step explanation:

Given function represents a parabola.

Now, here coefficient of $x^{2}$ is positive , so the parabola will be facing upwards and thus the function will be having a minimum.

Now, as we know that minimum value of a parabolic function occurs at

x = $\frac{-b}{4a}$ .

Where , b represents the coefficient of x and a represents the coefficient of $x^{2}$ .

here, a = 2 , b = -6

Thus $\frac{-b}{4a}$ = $\frac{6}{8}$

= $\frac{3}{4}$

So, at x = $\frac{3}{4}$ minimum value will occur and which equals

y = 2× $\frac{9}{16}$ - $\frac{18}{4}$ + 9 = $\frac{45}{8}$ .

Thus , minimum value of function is $\frac{45}{8}$ .

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2 years ago

Heron Island is a coral cay in the Great Barrier Reef. Around Heron Island (and elsewhere in Australia) there are 2 color morphs

kobusy [5.1K]

In case A, as the error would be a difference of 1, the assumption could be mantained, but in case B the difference will be bigger, showing that the ratio is not 3:1 but 4:1.

<h3><u>Ratios</u></h3>

Given that a preliminary study was carried out to test the hypothesis that the ratio of white to dark herons on the island was 3:1, but A) a small census found 16 white morphs and 4 dark, to determine if the assumption of a 3 :1 ratio could be rejected, and B) to determine the same question if the census were larger with 160 white morphs and 40 dark, the following calculations must be made: