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alexandr1967 [171]
3 years ago
12

If 7 boxes of crayons cost $1.68 how much will 29 boxes cost?

Mathematics
2 answers:
svetlana [45]3 years ago
7 0
<h3>Answer:</h3>

$6.96

<h3>Step-by-step explanation:</h3>

Find how much each box of crayon costs

To do this we need to divide 1.68 by the boxes by how many boxes it gives.

$1.68/7 = $0.24/box

Multiply the cost per box to how many boxes.

$0.24 x 29 = $6.96

Hope this helps.

Anna007 [38]3 years ago
5 0
<h2>Answer: $6.96 - How to get the answer ↓</h2>

__________________________________________________________

Well first start to multiply by 7

7 x 1 = 7

7 x 2 = 14

7 x 3 = 21

7 x 4 = 28

7 x 5 = 35

Because '7 x 5' is greater than 29, We will use '7 x 4' which is 28

7 boxes = 1.68

From the '7 x 4' we then again multiply '4 x 1.68' which is 6.72

So now we know 28 boxes = $6.72

But were still missing one box.

Now we divide '1.68 ÷ 7' this equation equals to '0.24'

With this information we can assume that-

1 Box = 0.24¢

Now we add '6.72' + '0.24' to add one more box to the 28 boxes.

We get '$6.96'

So now we know that 29 boxes will cost <u><em>$6.96 </em></u>dollars.

__________________________________________________________

<u><em>Please</em></u> mark brainliest... Hope it helps!

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In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther
sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1  = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0
3 years ago
Please help I'm begging
Elina [12.6K]
The figure is made up of a cone and a cylinder.

Diameter = 16 ft
radius = 16÷2 = 8ft

Volume of the cone = 1/3bh
Volume of the cone = \frac{1}{3}  \pi  r^{2} h
Volume of the cone =  \frac{1}{3} \pi 8^{2}(6) = 402.12

Volume of the cyclinder = bh
Volume of the cylinder = \ \pi r^{2} h
Volume of the cylinder = \ \pi 8^{2}(4) = 1206.37

Total = 402.12 + 1206.37 = 1608.49 cubic feet

6 0
3 years ago
A worker is exposed to 98 dB for five hours and 82 dB for three hours, giving an eight-hour working day. On average, what noise
julia-pushkina [17]

Answer:

92 dB

Step-by-step explanation:

Use the mean formula, mean = sum of elements / number of elements.

Since it is a 8 hour work day, there are 8 elements.

mean = sum of elements / number of elements

mean = (98 + 98 + 98 + 98 + 98 + 82 + 82 + 82) / 8

mean = 736 / 8

mean = 92

So, the average noise level is 92 dB

6 0
3 years ago
A company surveyed 2,600 North American airline passengers and reported that approximately 75% said that they carry a smartphone
geniusboy [140]

The probability that exactly six out of ten carry a smartphone when travelling is; <u><em>P(6) = 0.146</em></u>

The missing part of the question is;

The probability distribution of x is the binomial distribution with n = 10 and p = 0.75.

Calculate P(6)

  • This is a binomial <em>probability distribution</em> problem that has a general formula as; P(x) = ⁿCₓ × pˣ × q⁽ⁿ ⁻ ˣ⁾

Where;

p is probability of success

q is probability of failure

n is number of experiments

In this question;

n = 10

p = 75% = 0.75

q = 1 - p

q = 1 - 0.75

q = 0.25

Since six passengers are randomly selected, then applying the formula earlier quoted, we have;

P(6) = ¹⁰C₆ × 0.75⁶ × 0.25⁽¹⁰ ⁻ ⁶⁾

P(6) = 0.146

Read more at; brainly.com/question/24239758

4 0
3 years ago
What is the measure of angle Z in the parallelogram shown?
Anarel [89]

Answer:

30 Degress

Step-by-step explanation:

8 0
3 years ago
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