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Paraphin [41]
3 years ago
10

Sonya expected to get $60 for her birthday ,but she only got $40.What was the percentage decrease of the amount Sonya recieved?

Mathematics
2 answers:
kow [346]3 years ago
7 0
Are you asking about the percent of change?if so the answer is 33.3%.
dalvyx [7]3 years ago
4 0
The answer is $100 to the answer
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Three times a number increased by ten equal to twenty less than six times a number . find the number​
kiruha [24]

Answer:

the number is 10

Step-by-step explanation:

3x + 10 = 6x-20

20+10=6x-3x

30=3x

x=10

4 0
3 years ago
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What is 15-4x=-10-11x
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15-4X=-10-11X
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4 0
3 years ago
A coconut shy at the village fair offers three throws for $1, or seven throws for $2. In one hour, 187 throws are made and the a
kotykmax [81]

Total throws = 187

Let three throws = 3t

And

Seven throws = 7s

So

3t + 7s = 187 -------------- (1)

While total collected money = $57

Money for three throws = 1t

Money for seven throws = 2s

Hence

1t +2s = 57 ------------------(2)

Now solving both equations, so multiply second equation by 3 and subtract it from equation (1);

Equation (2) becomes 3t + 6s = 171

While subtracting it from equation (1) gives the final equation as below.

s = 16

Putting s = 16 in equation (2);

1t + (2x16) = 57

1t + 32 = 57

t = 25

Thus 25 people bought three throws and 16 people bought seven throws.

As for 25 people having three throws = $25

And

16 people having seven throws = 2x16 = $32

So total earned money = 25 + 32 = $57

<span>Hence proved. </span>

6 0
3 years ago
Rider dribbles the ball down 1/3 of the basketball court on the first day of practice. Each day after that he dribbled 1/3 of th
Zepler [3.9K]
Day 1=1/3    day 2=2/3    day 3=3/3=1 whole
5 0
3 years ago
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20 POINTS ILL MARK U BRAINLIEST PLS
makkiz [27]

Answer:

13 + \sqrt{89}

or

22.43398... (depends on how you round it)

Step-by-step explanation:

1. The question stated that the radius of the circle O is 5, so the length of AO and CO is 5.

2. Since line AB and line CB are both tangent to the circle, they have the same length. CB is 8, so AB will also be 8.

--> Both triangle AOB and COB share one side, and the other side (radius) has the same length, so the third side must be the same length

3. Tangent means having a 90-degree angle with the radius. We know that the triangle AOB is a right triangle since the angle OAB is 90 degrees.

We can use the Pythagorean theorem to find side OB. OB^2 = AO^2 + AB^2.

--> OB^2 = 25 + 64

--> OB^2 = 89

--> OB = \sqrt{89}

Now that we know the lengths of all three sides, we can add them up.

--> 5 + 8 + \sqrt{89}

--> 13 + \sqrt{89}

or

--> 22.43398113....

5 0
2 years ago
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