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Andru [333]
3 years ago
14

Lucy is knitting a blanket and needs to buy some more yarn. At her local craft store, 2 skeins of yarn cost $7 and 8 skeins of y

arn cost $28. If Lucy needs 20 skeins of yarn to finish the blanket, how much money will it cost?
A $49

B $56

C $70

D $140
Mathematics
1 answer:
marta [7]3 years ago
8 0

Answer:

The naswer to your question is: letter c)70

Step-by-step explanation:

Data

2 skeins of yarn cost $7

8 skeins of yarn cost $28

total = 20 skeins

cost = ?

Equation = she need s to buy 2 skeins of 8 a 2 skeins of 2

                 

   cost = 2 x $28 + 2 X $7

  cost = 56 + 14

  cost = $70

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take the absolute value of the coefficient (2)

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7 0
3 years ago
Read 2 more answers
Amy reached into a bag, recorded the color of the tile she picked, returned the tile and drew again. These are the tiles she has
Vedmedyk [2.9K]

Answer:

(a) P(next ball with blue) =  \frac{3}{10}       (b)  P(Not to be red) = 1-\frac{2}{5} =\frac{3}{5}

(c)  P(drawing 70 times yellow ball) = \frac{1}{10} \times 70 = 7.

Step-by-step explanation:

Given that,

The total outcomes of the color of tile are :-

Red , Red, Blue, Yellow, Blue, Red, Green, Red, Blue, Green.

From the Question,

Total number of outcomes = 10

(a) What is the probability that her next draw will be blue ?

        Red = 4,

        Blue = 3,

        Green = 2,

        Yellow = 1.

   P(next ball with blue) =  \frac{3}{10}.

(b) What is the probability that her next draw will NOT be red?

    P(Red ball) =  \frac{4}{10} = \frac{2}{5}

But we have to find

   P(Not to be red) = 1-\frac{2}{5} =\frac{3}{5}

(c) If Amy draws 70 more times with the same tiles from the question above, what probability would you expect a yellow?

  P(Yellow ball) =  \frac{1}{10}

drawing it 70 times we get the probability

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5 0
3 years ago
Simplify. 10 + 51 -10 + 51 41
tatuchka [14]

Answer:

52.12

Step-by-step explanation

PEMDAS

Adding comes before subtracting

10+51=61

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61-51.51=-52.12

3 0
3 years ago
If 2500 amounted to 3500 in 4 years as simple interest .find the rates at wish the interest was charged
Bad White [126]

Answer:

The interest rate per year is 0.1

Step-by-step explanation:

The equation is A = P(1+rt)

Substitute the numbers

3500 = 2500 (1+4r)

solve for r:

3500/2500 = 1+4r

1.4-1 = 4r

0.4 /4 = r

r = 0.1

6 0
2 years ago
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Ierofanga [76]

Answer:

Test statistic = - 2.29

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Step-by-step explanation:

The hypothesis :

H0 : p = 0.3

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pˆ = 0.2

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Test statistic = -2.29

The Pvalue :

P(Z < -2.29) = 0.0110

4 0
3 years ago
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