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GrogVix [38]
3 years ago
8

A group of cubes are arranged in a pattern with the same number of cubes in each row and column. There are 225

Mathematics
1 answer:
umka2103 [35]3 years ago
4 0

Given:

Total number of cubes = 225

Cubes are arranged in a pattern with the same number of cubes in each row and column.

To find:

The number of cubes in a row.

Solution:

Let the number of cubes in a row be x.

Since, cubes are arranged in a pattern with the same number of cubes in each row and column, therefore number of cubes in rows and columns are equal.

\text{Total cubes}=x\times x

\text{Total cubes}=x^2

Total number of cubes = 225

x^2=225

Taking square root on both sides.

x=\sqrt{225}

x=15

So, the number of cubes in a row is 15.

Therefore, the correct option is A.

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If you doubled a recipe that makes 2 doz. cookies how many cookies would you expect to make ​
Elena L [17]

Answer:

48

Step-by-step explanation:

remember 1 dozen of something is 12 of that object

so 1 dozen cookies is 12 cookies

two dozen means two times one dozen

or 2-times twelve (because there are twelve of an object in a dozen)

2 times 12 is 24

now you double the recipe that makes 2 dozen cookies

so you have 24 cookies and you multiply that by 2 to double it and you get 48

3 0
3 years ago
Read 2 more answers
Please help<br> Write 0.16 as a fraction. <br> A) 1/12 <br> B) 1/3 <br> C) 1/6 <br> D) 1/9
umka2103 [35]

0.16 as a fraction becomes 16/100. This can be simplified to 4/25.

None of those are the right answer, though 1/6 as a decimal is 0.16666666... (the 6s repeat forever) so option C is what they're looking for.

5 0
3 years ago
Read 2 more answers
9. Find the total surface area of the net
Shkiper50 [21]
The answer is 7.2cm your welcome
5 0
3 years ago
Here ya go these are the ones i need help with :)
r-ruslan [8.4K]
1) Division Property Equality
8D = 56
first pass: Simplify by 8
\frac{8D}{8} = \frac{56}{8}
second pass: <span>Now divide the equals
</span>1D= 7
D =  \frac{7}{1}
\boxed{D = 7}

2) Addition Property of Equality
Z - 9 = 21
first pass: <span>Incognito on the left and numbers without incognito on the right, changing signs if they change sides.
</span>Z = 21 + 9
second pass: Do the addition
Z = 21 + 9
\boxed{Z = 30}
<span>
3) Subtraction </span>Property of Equality
B + 7 = 15
first pass: Incognito on the left and numbers without incognito on the right, changing signs if they change sides.
B = 15 - 7
second pass: Do the subtraction
B = 15 - 7
\boxed{B = 8}
<span>
4) Multiplication Property of Equality
</span>\frac{3}{7} C = 126
first pass: <span>Multiply the equalities by the inverse of the incognito, without the incognito
</span>( \frac{7}{3}) *\frac{3}{7} C = 126*( \frac{7}{3})
\frac{21}{21} C = \frac{882}{3}
second pass: <span>Cancel the same terms and divide the ratio.
</span>\frac{\diagup\!\!\!\!\!21}{\diagup\!\!\!\!\!21} C = \frac{882}{3}
C =  \frac{882}{3}
\boxed{C = 294}

5) Distributive Property
<span>first pass: We only evaluate what is in the parentheses first and then we solve it.
</span>7(A+13)
second pass: we just evaluate what’s in the parentheses first, then solve it. We have a distributive property, with the distributive property, we multiply the '7' first.
7*A + 7*13
7A + 91

Obs: <span>This question is not to find the value, only to show the distributive property.
</span>
<span>For better understanding and solve your question with equation with incognito, after the distributive property, equalize the terms to zero, then isolate the terms, putting numbers with incognito on the left and numbers without incognito on the right, changing the signal as they change sides. And then solve by finding the value of the incognito dividing the terms.
</span>7A + 91 = 0
7A = - 91
A =  \frac{-91}{7}
\boxed{A = - 13}
<span>

</span>
5 0
4 years ago
What is the equation of the circle with center (1, -1) that passes through the point (5, 7)?
Inessa [10]

Answer:

Equation of the circle =

80 = ( x - 1)^2 + (y + 1)^2

Step-by-step explanation:

Center = (1 , -1)

Point = ( 5 , 7)

Eqn of a circle is

r^2 = (x - h)^2 + (y - k)^2

We are not given the radius of the circle, fortunately we are provided the information that the circle contains a point ( 5, 7), so we use the above information to find r

Using the center (1, -1)

h - 1

k - -1

r^2 = (x - 1)^2 + ( y - -1)^2

r^2 = (x - 1)^2 + (y + 1)^2

With the point ( 5,7)

x = 5

y = 7

r^2 = ( 5 - 1)^2 + ( 7 + 1)^2

= 4^2 + 8^2

= 16 + 64

= 80

r^2 = 80

r = square root of 80

r = 8.94

The r = 8.94 , which means the equation of the circle is

80 = (x - 1)^2 + ( y + 1)^2

5 0
3 years ago
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