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3 years ago

What statement makes the open sentence 49-7x=21 true?

1 answer:

5 0

If the question is asking what x equals then I believe the answer is x=4 because if you replace x with 4 and multiply them, you end up with 49-28 which equals 21

Hope this helps! :))

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A circle with a circumference of 6 has an arc with 20 central angle

marissa [1.9K]

Answer: 0.3 units

Step-by-step explanation: The ratio of the length of the arc to the circumference of the circle is proportional to the ratio of the central angle to the sum of angle in a circle.

7 0

3 years ago

Mason has a collection of 49¢ stamps, 20¢ stamps, and 34 stamps worth $23.55. He has 56 total 49¢ and 20+ stamps and the number

tatuchka [14]

Answer:

Mason has

16 20¢ stamps;
25 3¢ stamps;
40 49¢ stamps.

Step-by-step explanation:

Let x be the number of 20¢ stamps, then the number of 3¢ stamps is x + 9.

Mason has 56 total 49¢ and 20¢ stamps, then the number of 49¢ stamps is 56 - x.

Amounts:

in 49¢: $49(56-x)$ cents;
in 20¢: $20x$ cents;
in 3¢: $3(x+9)$ cents.

Total amount:

$49(56-x)+20x+3(x+9);$
$23.55.

Hence,

$49(56-x)+20x+3(x+9)=2,355\\ \\2,744-49x+20x+3x+27=2,355\\ \\-49x+3x+20x=2,355-2,744-27\\ \\-26x=-416\\ \\26x=416\\ \\x=16$

Mason has

16 20¢ stamps;
25 3¢ stamps;
40 49¢ stamps.

5 0

3 years ago

Printer allows for optional settings with a panel of sixon-off switches in a row. how many different settings can she select if

Leokris [45]

There are 2×2×2×2×2×2 = 2⁶ = 64 possible settings.

_____

Each switch can be in 2 positions, and for each of those, the other switches can have all possible settings. 1 switch has 2 settings. 2 switches will have 2×2 settings. 3 switches will have 2×2×2 settings.

6 0

3 years ago

20 Points-

Dennis_Churaev [7]

Answer:

Step-by-step explanation:

That would be 0=12 or 10 so that means you have to add 2 to 10.

7 0

3 years ago

sam said the absoulute value of 14 is -14. Kai said the absolute value of 14 is 14. Who is correct. Explain

Hoochie [10]

Answer:

Kai is right.

Step-by-step explanation:

Absolute Value is always positive.

4 0

3 years ago