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Komok [63]
3 years ago
6

The equation of horizontal line passing through (3,-4) is​

Mathematics
1 answer:
Greeley [361]3 years ago
8 0

Answer:

y = - 4

Step-by-step explanation:

The equation of a horizontal line parallel to the x- axis is

y = c

where c is the value of the y- coordinates the line passes through

The line passes through (3, - 4 ) with y- coordinate - 4 , then

y = - 4 ← equation of line

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A salesman keeps 20% of his sales as a commission. How much does he have to sell to earn $1,000? It is percent proportions by th
BARSIC [14]
If he wants to earn $1000, it means that $1000 must be 20% of his overall sales.

1000 = 20% * x
1000 = 20/100x
1000 = 0,2x         / ÷ 0,2 (both sides)
x = 5000

Answer: A salesman must sell products for $5000 to earn $1000.
6 0
2 years ago
A solid plastic ball is a sphere with radius 8 in. How much plastic does it take to make one​ ball? Use 3.14 for pi.
Kryger [21]

Answer:

2,143.57

Step-by-step explanation:

The equation for volume of a sphere is 4/3 x pie x r^3. Plug in 8 for r = 512. 512 x 3.14= 1,607.68. 4/3 x 1,607.68 is about 2,143.57

7 0
3 years ago
Two dice are thrown. Determine the probability of obtaining a score of at least 4.
VashaNatasha [74]

11/36 would be the probability of getting 4 , when two dice are thrown simultaneously.

As there are 6 faces of die,
So Probability of Not getting four in one dice = 5/6

As both events are mutually exclusive, the probability of not getting four in two dice = (5/6) * (5/6) = 25/36

So probability of getting at least one four is = 1-(25/36) = 11/36

So probability = 11/36

Learn more about probability refer:

brainly.com/question/24756209

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6 0
2 years ago
Does this table represent an exponential function?<br> X: 1, 2, 3, 4<br> Y: 3, 9, 27, 81
m_a_m_a [10]

Answer:

yes

Step-by-step explanation:

the numbers are going up

4 0
2 years ago
A tank with a capacity of 100 gallons initially contains 50 gallons of water with 10 pounds of salt in solution. fresh water ent
steposvetlana [31]
Let A(t) be the amount of salt (in pounds) in the tank at time t. We're given thatA(0)=10\text{ lb}.

The rate at which the amount of salt in the tank changes is given by the ODE

A'(t)=\dfrac{2\text{ gal}}{1\text{ min}}\cdot\dfrac{0\text{ lb}}{1\text{ gal}}-\dfrac{1\text{ gal}}{1\text{ min}}\cdot\dfrac{A(t)\text{ lb}}{50+(2-1)t\text{ gal}}

A'(t)+\dfrac{A(t)}{50+t}=0

(50+t)A'(t)+A(t)=0

\bigg((50+t)A(t)\bigg)'=0

(50+t)A(t)=C

A(t)=\dfrac C{50+t}

Given that A(0)=10, we find that

10=\dfrac C{50+0}\implies C=500

so that the amount of salt in the tank is described by

A(t)=\dfrac{500}{50+t}

The tank will be filled when 50+t=100, or after t=50 minutes. At this time, the amount of salt in the tank is

A(50)=\dfrac{500}{50+50}=5\text{ lb}
7 0
3 years ago
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