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3 years ago

5

If there are 26 students in each third-grade class and 3 third-grade classes in the school, how many students will attend an ass

embly for third graders if a total of 4 students are absent?
students

1 answer:

ddd [48]3 years ago

8 0

Answer:

74

Step-by-step explanation:

26 • 3 = 78 - 4 = 74

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I beg of you solve it. A small Plane can travel 120 mph in still air. The plain can fly 700 miles with the wind in the same that

Fiesta28 [93]

Answer:

speed of the wind, w = 20 mph

Step-by-step explanation:

Let,

s = speed in still air = 120 mph

w = wind speed = ?

t = travel time in hours

Plane traveling with the wind, we have:

(v + w)t = 700

(120 + w)t = 700 ------------------(equation 1)

Plane traveling against the wind, we have:

(v - w)t = 500

(120 - w)t = 500 --------------------(equation 2)

From equation 1, make t subject of formula,

t = 700/(120 + w) -------------------(equation 3)

From equation 2, make t also subject of formula,

t = 500/(120 - w) ---------------------(equation 4)

It is the same t in both equations, so equating equation 3 and 4

700/(120 + w) = 500/(120 - w)

Solve for w.

500(120 + w) = 700(120 - w)

60000 + 500w = 84000 - 700w

500w + 700w = 84000 - 60000

1200w = 24000

w = 24000/1200

w = 20 mph

3 0

3 years ago

In the United States, only Hawaii has a tropical wet climate. In some parts of Hawaii, rainfall is very heavy- over 400 inches p

mylen [45]

Answer:

Mean = 14.33333333

Median = 11

Mode= 9 and 11

Range = 42

Step-by-step explanation:

To find the mean, add all the numbers

(5+1+15+43+9+9+11+11+14+12+36+6) = 172

Divide by the number of numbers

172/12 = 14.33333333

Median is the middle number when listed from smallest to largest

1,5,6,9,9,11,11,12,14,15,36,43

Split into 2 even groups

1,5,6,9,9,11, 11,12,14,15,36,43

The middle is between 11 and 11

(11+11)/2 = 11

Mode is the number that appears mode often

This has 2 modes, 9 and 11

Range is largest number minus smallest number

43-1 = 42

5 0

3 years ago

Please help! need to know how to solve this Urgent!

PilotLPTM [1.2K]

Step-by-step explanation:

I dont know if this helps but that what I came up with

5 0

3 years ago

Read 2 more answers

This figure represents a small weight that is to be covered on all sides with a floral fabric. How much fabric is needed to cove

Anon25 [30]

Answer:

77.5 cm²

Step-by-step explanation:

We need to find the surface area of the rectangular prism.

Total surface area = 2(lw + wh + lh)

where:

l = length of base
w = width of base
h = height of prism

Given dimensions:

$\textsf{length}=\sf 6\dfrac12\:cm=6.5\:cm$

$\textsf{width}=\sf 2\dfrac12\:cm=2.5\:cm$

$\textsf{height}=\sf 2\dfrac12\:cm=2.5\:cm$

Substituting these value into the formula:

$\begin{aligned}\textsf{Surface area} & =\sf 2(6.5 \cdot 2.5+2.5 \cdot 2.5+6.5 \cdot 2.5)\\ & = \sf2(16.25+6.25+16.25)\\ & = \sf 2(38.75)\\ & =\sf77.5\:cm^2 \end{aligned}$

Therefore, 77.5 cm² of fabric is needed to cover the weight.

7 0

3 years ago

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If sally drives to work 25% faster than she did yesterday, what would be her

dedylja [7]

Answer:

50 percent

Step-by-step explanation:

because sally was tried yesterday and went 25 percent faster today.

6 0

3 years ago