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2 years ago

Calculate the number of hours in 7/2 days.

Mathematics

2 answers:

PtichkaEL [24]2 years ago

4 0

7/2 can be = to 3 and 1/2
1 day is = to 24 hours
3 1/2 times 24 = 84 hours

Oksanka [162]2 years ago

4 0

7/2 = 3 1/2 days
1 day = 24 hours
3 1/2 x 24
7/2 x 24/1
7 x 24 = 168
2 x 1 = 2
168/2 = 84 hours
3 1/2 days = 84 hours

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krok68 [10]

Answer:

30 hours

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3 years ago

17/21 ÷ 3 4/7 what us the estimated answer and steps to divide and find the answer

r-ruslan [8.4K]

Convert 3 4/7 into an improper fraction: 25/7
17/21 divided by 25/7

Dividing by a fraction is the same as multiplying by it's reciprocal.
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2 years ago

Help please

ddd [48]

Answer:

B. When the peak temperature is 40°C, 72 units of electricity are used on average.

Step-by-step explanation:

We see the relationship is closer to linear in the interval 30 to 40

Approximate points:

(30, 34) and (34, 54)

The slope of the line:

m = (54 - 34)/(34- 30) = 20/4 = 5

The line is:

y - 34 = 5(x - 30)
y = 5x - 116

At x = 40, the value of y would be:

y = 5*40 - 116 = 84

The closet option is B

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2 years ago

Whoever can answer this will get brainlyest

azamat

Answer:

The proportion is $\frac{35}{108}$ = $\frac{x}{84}$ , and the length of the unknown side is $\frac{245}{9}$ or 27.22 approximately rounded to the nearest hundredth.

Step-by-step explanation:

Since the triangles are similar, the proportion of corresponding sides are equal. The pairs of corresponding sides in these triangles which we'll use to solve it are LK, KE, MK, and KF. LK and KE are corresponding sides, and their proportion is $\frac{35}{108}$ . MK and KF are corresponding sides, and their proportion is $\frac{x}{84}$ in which x represents the missing side. The proportions are equal, so $\frac{35}{108}$ = $\frac{x}{84}$ . Multiply both sides by 84 to isolate the variable, and you'll get $x = \frac{35*84}{108}$ , which is $\frac{2940}{108}$ or $\frac{245}{9}$ .

6 0

2 years ago