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Ket [755]
3 years ago
10

Noah and Kate's are shopping for new guitar strings in a music store Noah buys two packs of strings Kate buys two packs of strin

gs and a music book the book cost $16 and the total cost is $72 how much is one pack of strings

Mathematics
2 answers:
Lana71 [14]3 years ago
4 0
The strings cost $14. you would take the total cost ($72) and subtract the cost of the book ($16) and you would get $56. you would then divide 56 by the number of book bought (4 in all) and you would get $14.
madreJ [45]3 years ago
4 0

The answer is 14$ Hope it helped!


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givi [52]
It’s 22 (add 6 after every term)
8 0
3 years ago
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The difference of twice a number and five is three. Find the number.
ss7ja [257]

let x = a number

difference means that its subtraction

twice a number is 2x

so the equation should be

2x-5=3

add 5 to both sides

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5 0
3 years ago
If the length of the legs of a right triangle are 13 and 13,what is the length of the hypotenuse? Round your answer to the neare
mrs_skeptik [129]

Answer:

a² + b² = c²

13² + 13² = c²

169 + 169 = c²

338 = c²

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3 years ago
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Find the area under the curve y = 13/x3 from x = 1 to x = t. Evaluate the area under the curve for t = 10, t = 100, and t = 1000
zvonat [6]

Answer:

t = 10

A = 32496.75

t = 100

A = 324999996.8

t = 1000

A=3.25\times 10^{12}

Step-by-step explanation:

The area under the curve is calculated by using the following definite integral:

A = \int\limits^t_ {1} \,{13\cdot x^{3}}  dx

A = 13 \int\limits^t_1 {x^{3}} \, dx

A = \frac{13}{4}\cdot (t^{4}-1)

Evaluated areas are presented below:

t = 10

A = 32496.75

t = 100

A = 324999996.8

t = 1000

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8 0
3 years ago
The area of the surface of a sphere is described by the formula S=4(3.14)r^2. The earth has a radius of 3960 miles and dry land
Stella [2.4K]

Answer: 57,512,581.63miles^2

Step-by-step explanation:

Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

S=4(3.14)r^2\\S=4(3.14)(3,960miles)^2\\S=196,960,896miles^2

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by \frac{29.2}{100}=0.292

Threfore, the area of dry land is the following:

S_{land}=(0.292)(196,960,896miles^2)=57,512,581.63miles^2

8 0
3 years ago
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