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3 years ago

Ling has $6 to buy 42-cent postage stamps. What is the greatest number of stamps that she can buy?*

Mathematics

1 answer:

Kazeer [188]3 years ago

4 0

Answer:

14 stamps

Step-by-step explanation:

She has 6.00 dollars in total so you would divide 2.00 by 0.42 to get 14.286, but you can't but .286 of a stamp so the answer is 14

<u>Hope this helps :-)</u>

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how many sides does a regular polygon have if the measure of an interior angle is 160 degrees? justify ur answer EXPLAIN HOW PLS

Afina-wow [57]

Step-by-step explanation:

Size of Interior angle = 180° - 360°/n, where n is the number of sides of the regular polygon.

We have 180° - 360°/n = 160°.

=> 360°/n = 20°, n = 18.

Therefore it is a 18-sided regular polygon.

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3 years ago

65 sit up each day for one week using distributive property

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3 years ago

The length of a rectangle is 11 in. longer than its width. The perimeter of the rectangle is 86 in.

GenaCL600 [577]

P = 2(L + W)
P = 86
L = W + 11

86 = 2(W + 11 + W)
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3 years ago

The box plot below represents some data set. What is the interquartile range (IQR) of

Mrac [35]

Answer:

IQR = 5

Step-by-step explanation:

the IQR is the difference between the upper quartile Q₃ and the lower quartile Q₁

Q₃ is the value at the right side of the box plot , that is

Q₃ = 51

Q₁ is the value at the left side of the box plot , that is

Q₁ = 46

then

IQR = Q₃ - Q₁ = 51 - 46 = 5

7 0

2 years ago

What are the zeros of the quadratic function f(x) = 6x2 + 12x - 7?<br>

mina [271]

Answer:

$\frac{-6+\sqrt{78} }{6}$ and $\frac{-6-\sqrt{78} }{6}$

Step-by-step explanation:

We are asked that what are the zeros of the quadratic function f(x) = 6x² +12x -7.

So, we have to find the roots of the equation, f(x) = 6x² +12x -7 =0 ...... (1)

Since the quadratic function can not be factorized, so we have to apply Sridhar Acharya's formula.

This formula gives if, ax² +bx +c =0, the the two roots of the equation are

$\frac{-b+\sqrt{b^{2}-4ac } }{2a} , \frac{-b-\sqrt{b^{2}-4ac } }{2a}$

Therefore, in our case 'a' being 6, 'b' being 12 and 'c' being -7, the two roots of the equation (1) will be

$\frac{-12+\sqrt{12^{2}-4*6*(-7) } }{2*6}, \frac{-12-\sqrt{12^{2}-4*6*(-7) } }{2*6}$

= $\frac{-12+\sqrt{312} }{12},\frac{-12-\sqrt{312} }{12}$

= $\frac{-6+\sqrt{78} }{6}$ and $\frac{-6-\sqrt{78} }{6}$

Hence, x= $\frac{-6+\sqrt{78} }{6}$

and x= $\frac{-6-\sqrt{78} }{6}$

(Answer)

9 0

4 years ago

Ling has $6 to buy 42-cent postage stamps. What is the greatest number of stamps that she can buy?*​

Ling has $6 to buy 42-cent postage stamps. What is the greatest number of stamps that she can buy?*