3 years ago

What is the divisibility factor of 21

Mathematics

1 answer:

tekilochka [14]3 years ago

7 0

21÷7=3 and if you need it 7×3 is 21

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Happy Paws charges $22.00 plus $4.50 per hour to keep a dog during the day. Woof Watchers charges $11.00 plus $5.75 per hour. Wr

AleksAgata [21]

Answer:

Total amount charged by Happy Paws = 22 + 4.50h

Total amount charged by Woof Watchers = 11 + 5.75h

3.2 hours

Step-by-step explanation:

Total amount charged by Happy Paws = 22 + 4.50h

Total amount charged by Woof Watchers = 11 + 5.75h

22 + 4.50h = 11 + 5.75h

Collect like terms

22 + 11 = 4.5h + 5.75h

33 = 10.25h

Solve for h

33/10.25 = h

h = 3.22

8 0

3 years ago

The length of the base and the height of a triangle are numerically equal. Their sum is 6 less than the number of units in the a

Troyanec [42]

Base = Height, Let them be x.

$( x \times x) \div 2 = (x + x) + 6 \\ x ^{2} \div 2 = 2x + 6 \\ \frac{1}{2} x^{2} - 2x - 6 = 0$
Solve quadratic equation:
x=6, x=-2(rejected because base and height is positive)

6x6/2 =18

6 0

2 years ago

Plz help im bad at this type of math

aleksandrvk [35]

X + 14 + x + 14 = 17 + x + 7
2x + 28 = 24 + x
2x - x = 24 - 28
x = -4

DF = x + 14
= (-4) + 14
= 10

6 0

2 years ago

Divide.<br>(10a^4-5a^3) / 5a

wolverine [178]

$\boxed{\frac{10a^4-5a^3}{ 5a}=\frac{10a^4}{5a}-\frac{5a^3}{5a}=2a^3-a^2}$

5 0

2 years ago

Help please..??? =) =)

Phoenix [80]

Answer:

1 1/4

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers