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german
2 years ago
7

Leanne can clean a fish tank in 30 minutes. Karl can clean a fish tank in 20 minutes. If they work together, how many minutes do

es it take them to clean a fish tank? (2 points)
Mathematics
1 answer:
Hoochie [10]2 years ago
6 0
It takes them 50 minutes to clean the fish tank together
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Consider this formula. z = y x If z = 4.0 and y = 8.4 , what is the value of x ? Express your answer to the tenths place (i.e.,
marysya [2.9K]

Answer:

x=2.1

Step-by-step explanation:

z=\frac{y}{x}

we are given with values z = 4.0 and y = 8.4

Substitute the given values in the equation and solve for x

Plug in 4.0 for z  and 8.4 for y in the equation

z=\frac{y}{x}

4.0=\frac{8.4}{x}

multiply x on both sides

4.0x=8.4

divide both sides by 4.0

x=\frac{8.4}{4.0}=2.1

x=2.1

3 0
2 years ago
Find the slope of the line that passes through these points.<br> (2, 2) and (8, 8)
SOVA2 [1]
The answer would be 1
Slope formula is y2-y1/x2-x1
8-2/8-2
6/6
1
3 0
2 years ago
Read 2 more answers
Suppose abby tracks her travel time to work for 60 days and determines that her mean travel time, in minutes, is 35.6. assume th
HACTEHA [7]
Given that:
mean,μ=35.6 min
std deviation,σ=10.3 min
we are required to find the value of x such that 22.96% of the 60 days have a travel time that is at least x.
using z-table, the z-score that will give us 0.2296 is:-1.99
therefore:
z-score is given by:
(x-μ)/σ
hence:
-1.99=(x-35.6)/10.3
-20.497=x-35.6
x=35.6-20.497
x=15.103


7 0
2 years ago
Read 2 more answers
Barbara wants to buy some glittery heart-shaped beads to make friendship bracelets. The beads she wants come in a small pack wit
AleksAgata [21]

Answer:

I feel u

Step-by-step explanation:u need help too

5 0
2 years ago
After working satisfactorily for 6 months, Dave received a 7% raise. His original gross monthly salary was $1083.34. What is Dav
Dmitriy789 [7]

Answer:

Step-by-step explanation:

His original gross monthly salary was $1083.34. This means that the total amount that he earned that he earned in the first 6 months would be

6 × 1083.34 = $6500.4

After working satisfactorily for 6 months, Dave received a 7% raise. The amount by which it was raised would be

7/100 × 6500.4 = $455.00

His salary for the next 6 months would be

6500.4 + 455.00 = $6955.40

Dave's gross annual salary would be

6955.40 + 6500.4

= $13455.8

7 0
2 years ago
Read 2 more answers
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