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3 years ago

Water flows down the Mississippi River at about 1.2 miles per hour

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

6 0

Answer:

Continuous

Step-by-step explanation:

The rate of flow of water down the river is referred to as its speed. Thus the speed changes with respect to the distance covered. Which implies that there is a direct relationship between the distance covered (in miles) by the water flow and time taken (in hours).

The relationship between hours and miles the water traveled is continuous.

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What are the roots of the polynomial equation 3 - 6x6 3 28? Use a graphing calculator and a system of equations.

melisa1 [442]

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3 years ago

Y = -8x – 30 y = 2x + 150

Sophie [7]

Step-by-step explanation:

y - y = 2x + 150 -( - 8x - 30 )

0 = 2 x + 150 + 8 x + 30

0.= 10x + 180

- 180 = 10 x

-180/10 = x

-18 = x

then y = 2 (-18) + 150

y = -36 + 150

y = 114

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3 years ago

Jax has a weekly math test. His scores on the last 5 tests are 78,92,86,94,95. What score does he need to have an average of 90

lara [203]

Answer:

x = 95

Step-by-step explanation:

Given that,

Jax scores on the last 5 tests are 78,92,86,94,95.

We need to find the score he need to have an average of 90.

The formula for average of few number is given by :

Average = sum of observations/total no of observation

Let he score x in test 6. So,

$90=\dfrac{78+92+86+94+95+x}{6}\\\\90=\dfrac{445+x}{6}\\\\540=445+x\\\\x=95$

So, he must score 95 in the next test so that its average is 90.

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3 years ago

Kennedy earned a grade of 81% on her multiple choice math final that had a total of 200 problems. How many problems on the final

Sedbober [7]

Answer:

162 out of 200

Step-by-step explanation:

81 percent of 100 is 81. multiply that by two to get 162

6 0

3 years ago

Read 2 more answers

Mr frank has 1.08 kilograms of fertilizer for the plants in his nursery. He wants every plant to get 98 my of fertilizer 4 times

bixtya [17]

Answer:

-2755 plants

-40mg is left.

Step-by-step explanation:

Given the fertilizer amount is 1.08kg, and the amount per plant per year is (4*98mg):

#convert the weight of the fertilizer into grams then divide by quantity per plant to determine number of plants;

$Number \ of \ plants=\frac{Fertilizer \ Amount}{Quantity \ per \ plant}\\\\=\frac{1.08\times 1000000}{98\ mg\times 4}\\\\=2755.1\approx2755$

-There are 2755 plants planted.

-We subtract the fertilizer used from the total to find what is left:

$Left=Total -Used\\\\=1080000\ mg-(2755\times98\times4)\\\\=40\ mg$

Hence, 40 mg of the fertilizer is left over.

6 0

3 years ago