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Nadusha1986 [10]
3 years ago
5

I need to know the price after the percentage is added

Mathematics
2 answers:
Zepler [3.9K]3 years ago
8 0
1. $53.50
2.$86.25
3. $58.32
4. 1.5
5. $2,612.50
Hope this helps
guapka [62]3 years ago
5 0

Answer:

1) $53.50

2)$85.10

3) $57.60

4)1.5

4) $2511.25

Step-by-step explanation:

for 1,2,3,5 take the original amount and the percentages to set up something like this

$50X1.07

which gives you the entire answer in a simple step

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Find the equation of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit.
leonid [27]

<u>Answer-</u>

The equations of the locus of a point that moves so that its distance from the line 12x-5y-1=0 is always 1 unit are

12x-5y+14=0 \\ 12x-5y-14=0

<u>Solution-</u>

Let a point which is 1 unit away from the line 12x-5y-1=0 is (h, k)

The applying the distance formula,

\Rightarrow \left | \frac{12h-5k-1}{\sqrt{12^2+5^2}} \right |=1

\Rightarrow \left | \frac{12h-5k-1}{\sqrt{169}} \right |=1

\Rightarrow \left | \frac{12h-5k-1}{13} \right |=1

\Rightarrow 12h-5k-1=\pm 13

\Rightarrow 12h-5k=\pm 14

\Rightarrow 12h-5k=14,\ 12h-5k=-14

\Rightarrow 12h-5k-14=0,\ 12h-5k+14=0

\Rightarrow 12x-5y-14=0,\ 12x-5y+14=0

Two equations are formed because one will be upper from the the given line and other will be below it.

4 0
2 years ago
What is the value of y if x=30
Drupady [299]

Answer:

y is 150

Step-by-step explanation:

180 - 30(x)

5 0
2 years ago
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Mr. Chang’s class has 28 students, StartFraction 4 Over 7 EndFraction of whom are girls. Which equation shows how to determine t
Olegator [25]

Answer:

Okay, so we know a number of students and the amount of girls as a bracket. So what we have to do now is multiply them with each other.

28 *4/7 = 16

So there are 16 girls in Mr. Chang´s class.

You can also determine the boys by - the students with the girls:

28-16=12 boys

Have a nice day :D

Step-by-step explanation:

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7 0
3 years ago
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Tony bought 48 roses for $24. How much do 24 roses cost
kondor19780726 [428]
We know that:
48 roses costs $24
24 roses costs ?$
Step 1:
Use cross multiply
24×24=576
Last step:
Use division
576÷48=$12, so 24 roses costs $12. As a result, 24 roses costs $12. Hope it help!
3 0
3 years ago
Your family wants to purchase a new laptop with a 19" widescreen. Since the 19 inches represents the diagonal measurement of the
loris [4]

Answer:

14.7 inches

Step-by-step explanation:

To solve this we use Pythagorean Theorem, so a**2 + b**2 = c**2

Since we have The hypotenus (19”) and the opposite (12”), we rearrange it to be , b equals the square root of c squared - a squared.

When we plug the numbers in the formula, the answer is 14.73, which is therefore 14.7 inches!

Hope this helps!

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