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Hunter-Best [27]

3 years ago

6

Ana uses 58 beads to make a necklace. She plans to sell 36 necklaces at each craft fair she goes to this summer. She plans to go

to 4 craft fairs this summer. What is the total number of beads that Ana will use to make the necklaces she plans to sell at the 4 craft fairs?

1 answer:

SOVA2 [1]3 years ago

7 0

Answer:

8064

Step-by-step explanation:

56 beads for each necklace,
36 necklaces at each craft,
4 craft fairs

<u>Total number of beads:</u>

56*36*4 = 8064

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The length of a rectangle is one foot more than twice its width. If the area of the rectangle is 300ft2, find the dimensions of

Gemiola [76]

Answer:

12 ft x 25 ft

Step-by-step explanation:

If L is the length and W is the width:

L = 2W + 1

300 = LW

Substitute:

300 = (2W + 1) W

300 = 2W² + W

0 = 2W² + W − 300

0 = (2W + 25) (W − 12)

W = 12

L = 2W + 1

L = 25

The rectangle is 12 feet wide and 25 feet long.

5 0

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Which of the following is not the correct form of the quadratic equation

Firdavs [7]

Answer:

the squared form

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3 years ago

2(x−3)=8(x−6) what is x?

uysha [10]

Answer: x = 7

Step-by-step explanation:

2x - 6 = 8x - 48

+48

2x + 42 = 8x

-2x

42 = 6x

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4 0

3 years ago

Read 2 more answers

A recent report in a women magazine stated that the average age for women to marry in the United States is now 25 years of age,

MrRissso [65]

Answer: 0.0136

Step-by-step explanation:

Given : Mean : $\mu=\ 25$

Standard deviation : $\sigma= 3.2$

Sample size : $n=50$

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x = 24

$z=\dfrac{24-25}{\dfrac{3.2}{\sqrt{50}}}=-2.20970869121\aprox-2.21$

The P-value = $P(z\leq24)=0.0135526\approx0.0136$

Hence, the probability that the sample mean age for 50 randomly selected women to marry is at most 24 years = 0.0136

8 0

4 years ago

The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i

Margarita [4]

Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

Step-by-step explanation:

We know the area of a rectangular room is the multiplication of the length and width:

$Area= 3.955m*3.955m\\Area= 15.642 m^2$

Now we need to know the uncertainty, the uncertainty of a multiplication is:

$\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|}$ (1)

$δ_A$ : Area uncertainty

$δ_L$ : Length uncertainty

$δ_W$ : Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

$δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area$ (2)

$δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2$

$δ_A= 0.040 m^2$

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

6 0

3 years ago