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ankoles [38]
2 years ago
12

11) Krystal and Rob each improved their yards by planting hostas and ivy. They bought their

Mathematics
1 answer:
umka2103 [35]2 years ago
3 0

Answer: Cost of one hosta = $11

Cost of one pot of ivy = $11

Step-by-step explanation:

Let the the cost of one hosta be represented by x.

Let the cost of one pot of ivy be represented by y.

The information given in the question can be formed into an equation as:

8x + 4y = 132 ............ i

2x + 2y = 44 ............. ii

Multiply equation i by 2

Multiply equation ii by 4

16x + 8y = 264 ........ iii

8x + 8y = 176 ........ iv

Subtract iv from iii

8x = 88

x = 88/8

x = 11

One hosta cost $11

From equation ii

2x + 2y = 44

2(11) + 2y = 44

22 + 2y = 44

2y = 44 - 22

2y = 22

y = 22/2

y = 11

One pot of ivy cost $11

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Tess created a Pythagorean triple of (24, 32, 40) by multiplying the known Pythagorean triple 3, 4, and 5 by 8. Is Tess correct?
pentagon [3]

Answer:

(24, 32, 40) is a Pythagorean triplet.

Option A) Yes, as long as each number in the Pythagorean triple is multiplied by the same whole number.                

Step-by-step explanation:

We are given the following in the question:

Pythagorean triplet: (3,4,5)

New Pythagorean triplet obtained = (24, 32, 40)

Pythagoras theorem:

For a right angles triangle the sum of square of sides of triangle is equal to the square of hypotenuse of triangle.

Verification:

24^2 + 32^2\\=576 + 1024\\=1600\\=40^2

Yes, Tessa is correct.

(24, 32, 40) is a Pythagorean triplet.

Pythagorean triple be created using multiplies of a known Pythagorean triple

Option A) Yes, as long as each number in the Pythagorean triple is multiplied by the same whole number.

8 0
3 years ago
Read 2 more answers
The sum of 15 and the product of 5 and v
pogonyaev
The answer is 3 because 3×5=15
7 0
3 years ago
Find the measure of an angle whose complement is five times its measure.
ch4aika [34]

Answer:

The measure of the unknown angle is 15°.

Step-by-step explanation:

Represent this angle by A.  Then the complement of A is 90° - A.

"Angle whose complement is five times its measure" would be expressed as

90° - A = 5A

Solve this for A by adding A to both sides:

90° = 6A.  Then A = 90°/6, or 15°

4 0
2 years ago
Hello someone help me please
pshichka [43]

Answer:

B. -1/3

Step-by-step explanation:

replace <em>x</em> with 34 and solve it.

4 0
2 years ago
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Help! I don’t get this at all !
Oxana [17]

Answer:

Step-by-step explanation:

I want to start with a quick explanation of slope/ rate of change since you say you don't get it at all.  Basically it measures how fast something changes.  Or, in other words, if x changes by so much, y will change by a corresponding amount.

If you look at the graph of just y=x, you can see that as x changes by 1 so does y.  if you make it y=2x, will x=1 makes y=2, and x = 2 makes y = 4, so here it changes by 2.  You cans ee it keeps going in that manner.  Also notice these make straight lines, maybe not horizontal, but still straight diagonal lines.  This is important for a constant slope.

The way slope can be describes is "rise over run" also.  Which means you count how many you "rise" and divide it by how many you "run", or in other words how your y values change and your x values change.  Using y = -.5x this time let's see what we get using this rise over run idea.  It's usually easier to compute the "run" first, so let's say we move from 2 to 4.  That makes our run 2, keep that in mind.  the y values that correspond to this are -.5*2 = -1 and -.5*4 = -2 note we keep the negative signs here.  Now that we have the y values what are the change in them?  well to go from -1 to -2 is -1, so our change in y is -1.

As I started with the rise over run is change in y divided by change in x.  we found both of those so our slope is -1/2 so negative one half.  That's just an example to hopefully clear up any confusion about slope.

The first part of your question I'm not sure about.  Are any numbers given at all anywhere?  the y looks longer than x but we can't really say exactly how long.  We can tell the slope is negative at least, since it points downward going from left to right, but I don't think we can say what the exact rate of change (slope) is.

The second part uses the first so hard to say.  If you can find what the rate of change is the answer will basically be (delta y) = (rate of change)*(delta x) since rate of change = (delta y)/(delta x) since delta means "change in"

The third gives some numbers, but we would still need the rate of change.  I'll give the best answer I can.  I do want to say that putting slope into an equation will often be represented by the letter m.

Anyway, pretending we know what m is, the method to find the equation of y is to use the formula y - y1 = m(x - x1).  x1 and y1 are the coordinates of a point that you need.  And int he question they give you one.  So we will plug in.

y - y1 = m(x - x1)

y - (-2.5) = m(x - 1) Then distribute that m we're pretending we know

y - (-2.5) = mx - m Then get y by itself

y = mx - m - 2.5

So once you know m you can solve everything else.  If you can find something that says how long those red and blue lines are, or maybe the points they point from and to you can let me know.  Hopefully this helpped though.  

3 0
3 years ago
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