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3 years ago

9

Lucy had half as much money as Mel, but since grandma gave them each $20 she now has three-fifths as much. How much money does L

ucy have?

1 answer:

Elan Coil [88]3 years ago

5 0

Answer:

Lucy has $60

Step-by-step explanation:

Mel had 80

Lucy had 40

Now Mel has 100

and Lucy has 60

60/100 = 3/5

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Is this prime or can it be factored?

poizon [28]

Factor the following:
6 x^2 - 19 x + 10
Factor the quadratic 6 x^2 - 19 x + 10. The coefficient of x^2 is 6 and the constant term is 10.
The product of 6 and 10 is 60. The factors of 60 which sum to -19 are -4 and -15.
So 6 x^2 - 19 x + 10 = 6 x^2 - 15 x - 4 x + 10 = 2 x (3 x - 2) - 5 (3 x - 2):
2 x (3 x - 2) - 5 (3 x - 2)
Factor 3 x - 2 from 2 x (3 x - 2) - 5 (3 x - 2):
Answer: (3 x - 2) (2 x - 5)

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3 years ago

Which of the following represents the value of the missing side? Round to the nearest tenth.

dlinn [17]

C because it is to the nearest tenth I think

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2 years ago

A kite has a width of 16 inches and a height of 18 inches.

Oliga [24]

Answer:

432 inch square

Step-by-step explanation:

The total material used to make a kite should be equal to the area of the kite. You can find the area of a kite by multiplying the width with length, then divide it by two. The formula will be:

area = length x width /2

area= 18 in * 16 in /2= 144 inch square.

The area of one kite is 144 inch square, then the area for 3 kites will be: 3 * 144 inch square = 432 inch square

8 0

3 years ago

In a genetics experiment on peas, one sample of offspring contained green peas and yellow peas. Based on those results, estimate

pashok25 [27]

Answer:

The probability of getting an offspring pea that is green is is 0.733

YES, the probability is reasonably close to the expected value of 3/4 (0.750)

Step-by-step explanation:

The formula for calculating the probability of an event is;

P = Favorable Outcome / Sample space

Let A be an event of getting an offspring green peas, B be an event of getting an offspring yellow peas and N be the total number of peas.

number of green peas in an offspring are 350

number of yellow peas in an offspring are 127

total number of peas are 477

So in the genetic experiment, the number of times event A occurs is 350 and the number times event B occurs is 127

Now the probability of getting an offspring pea that is green is

P = number of green peas / total number of peas

p = n(A)/N

p = 350/477

p = 0.733

So YES, the probability is reasonably close to 3/4 ( 0.750 )

The probability of getting an offspring pea that is green is is 0.733.

YES, the probability is reasonably close to the expected value of 3/4 (0.750)

5 0

3 years ago

Forest covers an area of 3400 km^2. Each year this area decreases by 7.25%. What will the area be after 13 years

ELEN [110]

Area of 3400 decreases by 7.25%.

Rewrite 7.25% as a decimal.

This leads to 0.0725.

So, (3400)(0.0725) = 246.5.

Now (246.5)(13 years) = 3,276.

The area after 13 years will be

3,276 km^2.

8 0

3 years ago