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Mathematics

1 answer:

AleksAgata [21]3 years ago

6 0

Answer:

Step-by-step explanation:

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A rate of 90 kilograms per hour is approximately how many miles per hour? Round to the nearest whole number.

STatiana [176]

I'll assume by kilograms you mean kilometers.

1 kilometre is approximately 0.621 miles, so multiply 90x0.621 to find your conversion.

7 0

3 years ago

Read 2 more answers

What is the expected price of a calculator in the year 2000 if it costs $17.6 in 2015? You can use the chart below for a referen

Aleks04 [339]

Answer:

$12.78.

Step-by-step explanation:

To determine the expected price of a good in 2000, knowing that in 2015 it cost $ 17.6 and that the consumer price indexes were worth 172.2 in 2000 and 237.017 in 2015, the following calculation must be performed:

237.037 = 17.6

172.2 = X

X = 172.2 x 17.6 / 237.037

X = 3,030.72 / 237.037

X = 12.78

Thus, the expected price of the good in the year 2000 is $ 12.78.

8 0

3 years ago

there are 30 marked seals. In a survey, you count 58 seals, 16 of which were marked. About how many seals are in the area? Round

Rina8888 [55]

Answer:

109 seals

Step-by-step explanation:

Let

x -----> approximate total seals in the area

we know that

In a survey, you count 58 seals, 16 of which were marked

Using proportion

Find out how many seals are in the area , if there are 30 marked seals

$\frac{58}{16} =\frac{x}{30}\\\\x=58(30)/16\\\\x=108.75\ seals$

Round to the nearest whole number

$108.75\ seals=109\ seals$

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3 years ago

In the Midpoint Rule for triple integrals we use a triple Riemann sum to approximate a triple integral over a box B, where f(x,

Tomtit [17]

To approximate the volume with 8 boxes, we have to split up the interval of integration for each variable into 2 subintervals, [0, 1] and [1, 2]. Each box will have midpoint $m_{i,j,k}$ that is one of all the possible 3-tuples with coordinates either 1/2 or 3/2. That is, we're sampling $f(x,y,z)=\cos(xyz)$ at the 8 points,