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MatroZZZ [7]
3 years ago
13

What is 10:40 plus 7:15 in time?​

Mathematics
2 answers:
vekshin13 years ago
8 0

Answer:5:55

Step-by-step explanation: lol

quester [9]3 years ago
6 0

Answer:

5:55

Step-by-step explanation:

just add it up and you'll get the answer which is 5:55

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Select the statement that describes this expression: fraction 1 over 2 x (734 − 246).
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Answer:

244

Step-by-step explanation:

fraction fraction 1/2 the quotient of 734 and 246

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T-7=19 what is the answer and how do you do it
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T=26
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What are interior angles
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Find the missing side or angle.<br> Round to the nearest tenth.<br> C=5<br> b=4<br> a=2<br> B=[ ? ]°
Ipatiy [6.2K]

Answer:

for this one b=49.458

Step-by-step explanation:

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3 years ago
The altitude of a triangle is increasing at a rate of 1.5 1.5 centimeters/minute while the area of the triangle is increasing at
seraphim [82]

Answer:

The base reduces at 3.75cm/min

Step-by-step explanation:

Given

Let

h \to altitude

b \to base

A \to Area

So:

\frac{dh}{dt} = 1.5cm/min

\frac{dA}{dt} = 1.5^2cm/min

The area of a triangle is:

A = \frac{1}{2}bh

Calculate b when A =88cm^2; h =8cm

A = \frac{1}{2}bh

88=\frac{1}{2} * b * 8

88 =b * 4

Solve for b

b = 88/4

b = 22

We have:

A = \frac{1}{2}bh

Differentiate with respect to time

\frac{dA}{dt} =\frac{1}{2}(h\frac{db}{dt} + b\frac{dh}{dt})

Substitute the following values in the above equation

\frac{dh}{dt} = 1.5cm/min        \frac{dA}{dt} = 1.5^2cm/min      b = 22     h = 8

1.5 = \frac{1}{2}(8 * \frac{db}{dt} + 22 * 1.5)

Multiply both sides by 2

3 = 8 * \frac{db}{dt} + 22 * 1.5

3 = 8 * \frac{db}{dt} + 33

Collect like terms

8 * \frac{db}{dt} = 3 -33

8 * \frac{db}{dt} = -30

Divide both sides by 8

\frac{db}{dt} = -\frac{30}{8}

\frac{db}{dt} = -3.75

4 0
3 years ago
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