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Verizon [17]
3 years ago
8

How much more area does a 40 mile radius cover than a 4 mile radius

Mathematics
1 answer:
malfutka [58]3 years ago
5 0
40 mile radius covers 10 times more than 4 mile radius
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Explain why (4, 1) is not a solution to the equation y=3x+1
nexus9112 [7]

In (4, 1) 4 represents x, and 1 represents y

y = 3x + 1

1 = 3(4)+1

1 = 12 + 1

1 ≠ 13   ← sides are not equal so (4, 1) is not a solution to y=3x+1

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3 years ago
Expand and simplify <br><br> 3(c-7)+2(3c+4)
leonid [27]

Answer:

9c - 13

Step-by-step explanation:

Given

3(c - 7) + 2(3c + 4) ← distribute both parenthesis

= 3c - 21 + 6c + 8 ← collect like terms

= 9c - 13

3 0
3 years ago
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Find the measure of angle x.<br> Х<br> 75°<br> 36<br> x = 180<br> X = 111<br> x= 69<br> X = 75
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Sowwy man i just needed the points
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3 years ago
Chase has 3 gallons of a solution that is 30% antifeeze that he wants to use to winterize his car. How much pure antifreeze shou
makvit [3.9K]

Let  x gallons be the amount of pure antifreeze that should be added to the 30% solution to produce a solution that is 65% antifreeze. Then the total amount of antifreeze solution will be x+3 gallons.

There are 30% of pure antifreeze in 3 gallons of solution, then

3 gallons - 100%,

a gallons - 30%,

where a gallons is the amount of pure antifreeze in given solution.

Mathematically,

\dfrac{3}{a}=\dfrac{100}{30},\\ \\a=\dfrac{3\cdot 30}{100}=0.9\ gallons.

Now in new solution there will be x+0.9 gallons of pure antefreeze.

x+3 gallons - 100%,

x+0.9 - 65%

or

\dfrac{x+3}{x+0.9}=\dfrac{100}{65},\\ \\65(x+3)=100(x+0.9),\\ \\65x+195=100x+90,\\ \\35x=105,\\ \\x=3\ gallons.

Answer: he should add 3 gallons of pure antifreeze.

8 0
3 years ago
I need help with this math problem please
Gekata [30.6K]

Answer:

C)  3(x+7)²

Step-by-step explanation:

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3 years ago
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