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vodomira [7]
3 years ago
13

Explain how a solution found using substitution can be checked.

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0
A solution can be found using substitution by substituting the ordered pair into both of the original equations.
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_ 2. (6 x 4)+ (6 x 11) = 6 x (4 + 11)<br> What is the property of this equation?
laiz [17]

Answer:

Distributive Property

Step-by-step explanation:

The distributive property of multiplication over addition can be used when you multiply a number by a sum.

4 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! SUPER IMPORTANT QUESTION!!!
Anettt [7]

Answer:

Distance between two cities is 193.94 miles.

Step-by-step explanation:

We have,

Madison and Wisconsin have latitudes 43.0731°N and 45.9172°N respectively.

Thus, their difference is 45.9172°N - 43.0731°N = 2.8441°

We assumed, the diameter of earth is 7917.5 miles.

So, the radius = \frac{7917.5}{2} = 3958.75 miles

So, using the cosine formula, we have,

a^{2}=b^{2}+c^{2}-2bc\cos A

i.e. a^{2}=3958.75^{2}+3958.75^{2}-2\times 3958.75\times \cos 2.8441

i.e. a^{2}=31343403.13\times 0.0012

i.e. a^{2}=37612.08

i.e. a= 193.94 miles.

Hence, the distance between two cities is 193.94 miles.

8 0
3 years ago
Five times a number plus four times a second number is 20. Four times
dexar [7]

Answer:

first number is 4

second number is 0

Step-by-step explanation:

y = 1st number

x = 2nd number

system of equations:

5y + 4x = 20

4y + 2x = 16

I multiplied the second equation by -2 to eliminate the 'x-values'

-2(4y + 2x = 16)  =                 -8y - 4x = -32

now add to 1st equation:     <u>5y + 4x = 20</u>

                                              -3y = -12

y = 4

solve for 'x':

5(4) + 4x = 20

20 + 4x = 20

4x = 0

x = 0

4 0
3 years ago
Which two triangles are congruent by the SAS Theorem?
Mumz [18]

Answer:

triangle ABC and triangle HFG, I know it is filled out as DCE, but I don't see any triangle DCE

Step-by-step explanation:

check the sides and the angles

7 0
3 years ago
Can someone help me?
Scrat [10]

Answer:

The answer is C

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
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