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stiks02 [169]
3 years ago
11

Jeffrey is going to charge an initial fee of $10 for mowing lawns, plus an hourly rate. He knows that he wants to

Mathematics
1 answer:
zmey [24]3 years ago
4 0

Answer:

B 15

Step-by-step explanation:

10 dollar + 2 hours of work 15 x 2

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Two balls A and B rotate along a circular track. Ball A makes 4 full rotations in 120 seconds. Ball B makes 3 full rotation in 6
lara [203]
Find the rate in which both balls make one full rotation around the track.

Ball A:

120 / 4 = 30

It takes 30 seconds for Ball A to make a full rotation.

Ball B:

60 / 3 = 20

It takes 20 seconds for Ball B to make a full rotation.

Find the least common multiple of 20 and 30 to find the time at which they'll meet.

Multiples of 20: {20,40,60}
Multiples of 30: {30,60}

60 is the least common multiple of both 20 and 30.

The balls will meet again at 60 seconds.
5 0
3 years ago
10. In the figure below, ABCD is a square. DEFC, BCGH and AEFB are all
zysi [14]

Answer:

a) As sides of squares are always equal.

So,

BC=CD

2b+CF=a+b

CF= a+b-2b

CF= a-b

b) Area of rectangle CDEF= CDxCF

=(a+b)(a-b)

=(a²-b²)

Hope it helps :-)

6 0
3 years ago
Find the discriminant to determine the number of solutions for the quadratic equation a^2-5a=6
Bingel [31]
A^2-5a = 6
a^2-5a-6 = 0
Discriminant = (-5)^2-4(1)(-6) = 49
Discriminant is positive so there are two solutions
3 0
2 years ago
Please help asap !!!!!
Rashid [163]

Answer:

\dashrightarrow \: { \tt{3.{ \bar{42},  \: \: 0,  \: \:  \frac{17}{9}, \:   \: \frac{7}{3} , \:  \:  - 6, \:  \: 8 }}}

Step-by-step explanation:

• A rational number is a number which can have a denominator i.e fraction, integers [ have denominator of 1 ]

6 0
2 years ago
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Solve for t. 3t - 18 = 4(-3-3/4t). t=
Alex73 [517]

Answer:T=1

Step-by-step explanation:

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2 years ago
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