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Snowcat [4.5K]
2 years ago
7

Mei Ling has 200 coins. 25% of these coins are $1 coins. She wants to increase the number of $1 coins to 40%. How many $1 coins

must she collect?​
Mathematics
2 answers:
ANTONII [103]2 years ago
7 0
Go ask your teacher their your best cheat sheet
Darya [45]2 years ago
7 0

256 of 200 = 25/100 x 200

                   = 50 $1 coins

408 of 200 = 40/100 x 200

                    = 80 $1 coins

80-50 = 30 $1 coins

Mei Ling must collect 30 more $1 coins

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Find the measure of angle Y. Round your answer to the nearest hundredth. (Please type the numerical answer only)
Sati [7]

Answer:

y = 11.54°

Step-by-step explanation:

Reference angle = y°

Opposite side length = 4

Hypotenuse = 20

Apply trigonometric function SOH:

Sin(y) = \frac{Opp}{Hyp}

Sin(y) = \frac{4}{20}

Sin(y) = 0.2

y = Sin^{-1}(0.2)

y = 11.536959° ≈ 11.54° (nearest hundredth)

4 0
3 years ago
125.315 to standard form​
Marianna [84]

Answer:

1.25315*102

Step-by-step explanation:

6 0
3 years ago
I can’t figure out what the half circle means the answer options are 163,129,149 and 186
vodka [1.7K]

Answer: 129

Step-by-step explanation: First find the area of the circle. Since we know the area of a circle is πr²  (pi multiplied by the radius squared) we can find the area of the half circle. The radius is 5 (because radius is half of the diameter)

Area=3.14(5)²

       =3.14(25)

       =78.5

But since this is just a half circle, divide this by 2

That will get 39.25

Then add this to the area of the rectangle (L*W) which is 90

That will get about 129

4 0
3 years ago
Margie needs to know the square footage for the first floor of the condo her client wants to make an offer on. The kitchen is 10
rodikova [14]

Answer: the total square footage is

850 ft³

Step-by-step explanation:

The kitchen is 10 feet by 15 feet. This means that the volume of the kitchen would be

10 × 15 = 150 ft³

The living/dining combo is 20 feet by 25 feet. This means that the volume of the living/dining combo would be

20 × 25 = 500 ft³

The office and sunroom are each 10 feet by 10 feet. This means that the volume of the office would be

10 × 10 = 100 ft³

Also, the volume of the sunroom would be

10 × 10 = 100 ft³

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3 0
3 years ago
PLEASE HELP! IF YOU DON'T KNOW DON'T ANSWER! 60 POINTS!!
postnew [5]

Answer:

an = 1/2 (4)^ (n-1)

a6 = 512

Step-by-step explanation:

The formula for a geometric sequence is

an = a1 (r)^(n-1)

where an is the term of the sequence

a1 is the initial term of the sequence

r is the ratio

and n is the term number

We know a1 = 1/2 and r =4

I will assume that x=6 means we want to know the 6th term

an = 1/2 (4)^ (n-1)

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a6 = 1/2 * 4^5

a6 = 512

3 0
3 years ago
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