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inna [77]
3 years ago
6

Working with your cousin, you can finish a table in 4 hours. working alone, your cousin can finish the job in 5 hours. how long

would it take you to refinish the table working alone? SHOW WORK!!
a. 10
b. 15
c. 16
d. 20​
Mathematics
1 answer:
Allushta [10]3 years ago
4 0
I think the answer is A but i could be wrong
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Estimate the amount of the tip by rounding the bill to the nearest dollar before calculating.
Mashutka [201]

Answer:

$17

Step-by-step explanation:

First, round $85,39 to the nearest dollar:

85,39 ≈ 85

Then calculate the amount of the tip:

\frac{1}{5}(85) = 17 \\  \\  \frac{1}{5}  = 20\%

I am joyous to assist you anytime.

4 0
3 years ago
Tyler and Pearl went on a 20km bike ride that lasted for 3 hours. Because of steep hills or the trail, they walked for most of t
noname [10]

Answer: 1 hour


Step-by-step explanation:

Let the distance they walked be d_1 in time t_1 and the distance they walked be d_2 in time t_2 ,then

Walking speed=\frac{d_1}{t_1}=4

\\\Rightarrow\ d_1=4t_1

Riding speed=\frac{d_2}{t_2}=12

\\\Rightarrow\ d_2=12t_1

Also the total time taken=3 hours

∴t_1+t_2=3\\\Rightarrow\ t_2=3-t_1...(1)

Since the total distance= 20 km

∴d_1+d_2=20\\\Rightarrow4t_1+12t_2=20\\\Rightarrow4t_1+12(3-t_1)=20..............[\text{from (1)}]\\\Rightarrow4t_1+36-12t_1=20\\\Rightarrow-8t_1=-8\\\Rightarrow\ t_1=1

Thus, the they spent 1 hour time in walking.

7 0
3 years ago
WILL GIVE BRAINLIEST!!<br><br> Which equations are correct?<br><br> Select each correct answer.
solong [7]

To multiply these expression, multiply the numeric parts, and sum the exponents of the literal parts (because the variable is the same: we're using the power property a^b\cdot a^c = a^{b+c}).

So, you have:

  • 3z^7 \cdot (4z^2) = 3\cdot 4 \cdot z^{7+2} = 12z^9
  • 6a^5 \cdot (6a^5) = 6\cdot 6 \cdot z^{5+5} = 36z^{10}
  • 6b^4 \cdot (-3b^4) = 6\cdot (-3) \cdot b^{4+4} = -18b^8
  • 5x^4 \cdot (4x^2) = 5\cdot 4 \cdot x^{4+2} = 20x^6
3 0
3 years ago
The width of a human hair is about 0.002 inches, which can be written as
GalinKa [24]

Answer:

-3

Step-by-step explanation:

5 0
4 years ago
What is the height of a triangle with an area of 200 cm squared and a base of 50 cm​
r-ruslan [8.4K]

Answer:

8

Step-by-step explanation:

Area = 1/2bh

200 = 1/2(50)h

200=25h

8=h

4 0
3 years ago
Read 2 more answers
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