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stepan [7]
3 years ago
10

PLEASE HELP

Mathematics
1 answer:
ehidna [41]3 years ago
3 0
You can find the answer by plugging in any of the multiple choice options into a,
when you square a number (^2), the result is always positive even if the number starts off negative, 
 -25 or 125 wouldn't work for this equation because the answer is too big
but when you plug -5 or 5 in you get the right answer, so the answer is c
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It costs $3.45 to buy 3/4 lb of chopped walnuts. How much would it cost to purchase 12 lbs of walnuts? Enter the numeric value o
mote1985 [20]

Answer:

$55.20

Step-by-step explanation:

Create a proportion where x is the cost of 12 lbs of walnuts:

\frac{3.45}{0.75} = \frac{x}{12}

Cross multiply and solve for x:

0.75x = 41.4

x = 55.2

So, for 12 lbs of walnuts, it will cost $55.20

8 0
3 years ago
AD¯¯¯¯¯ ​ , BD¯¯¯¯¯ , and CD¯¯¯¯¯ are angle bisectors of the vertex angles of △ABC . BE=12 meters and BD=20 meters.
Romashka-Z-Leto [24]

Answer:

10

Step-by-step explanation: 20/2

3 0
4 years ago
Please someone help me!!!! Find the value of x. Round to the nearest tenth
eduard

Answer:

So the triangle adds up to 180

5 0
3 years ago
(4,7), (x,19); slope = 3 the pair points lies on the same line with the given slope. Find x
Andrew [12]
So we are given two points, say P1(4,7), P2(x,19).

Slope is given by 
m=3=(y2-y1)/(x2-x1)=(19-7)/(x-4)
solve for x
3=(19-7)/(x-4)
cross multiply
3(x-4)=12
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3 0
4 years ago
How many positive integers less than 1000 a) are divisible by 7? b) are divisible by 7 but not by 11?
sashaice [31]

Answer:

  130

Step-by-step explanation:

The number of integers meeting the criteria can be found by counting them using a counting formula.

<h3>Divisible by 7</h3>

Integers divisible by 7 will have the form (7n), where n is some positive integer. The number of them less than 1000 can be found from ...

  7n ≤ 1000

  n ≤ 142.857

There are 142 integers less than 1000 that are divisible by 7.

<h3>Divisible by 7 and 11</h3>

Similarly, integers divisible by 7 and 11 will be of the form (77n), for some positive integer n.

  77n ≤ 1000

  n ≤ 12.987

There are 12 integers less than 1000 that are divisible by both 11 and 7.

<h3>Divisible by 7, not 11</h3>

The number of integers less than 1000 that are divisible by 7, but not 11, will be the difference of these numbers.

  142 -12 = 130 integers divisible by 7, but not 11.

3 0
2 years ago
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