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1 year ago

6.2 ÷ 3.1 is equivalent to 62 ÷ 31 The dividend and divisor were both multiplied by

Mathematics

1 answer:

VARVARA [1.3K]1 year ago

8 0

Answer:

The dividend and the divisor were both multiplied by 10

Step-by-step explanation:

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Given: mTRV = 60° mTRS = (4x)° Prove: x = 30 What is the missing reason in step 3? substitution property of equality angle addit

mihalych1998 [28]

Answer: Angle addition postulate.

Explanation: If $\angle TRV= 60^{\circ}$ and $\angle TRS=4x^{\circ}$

here, if we have to prove x=30

If there is a condition that TR is a line which meets with the line segment VS at point R then by the Angle addition postulate, we can say that $\angle TRV+\angle TRS=180^{\circ}$ ⇒ $x=30^{\circ}$

But,

In option (1) substitution property of equality

If there is condition that $\angle TRV=\angle TRS$

then we can use substitution property of equality,

And, in this case $4x^{\circ}=60^{\circ}$ ⇒ $x=15^{\circ}$

which is wrong. So, we can not use this property here.

In option (3) subtraction property of equality

There is no use of this property to find the value x.

In option (4) addition property of equality

There is no use of this property to find the value x.

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2 years ago

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. Explain how trigonometry can be used to determine the height of a cell phone tower. Be sure to list the tools required and how

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Well a cellphone tower has angles and it has a distance so it is possible to use trigonometry to determine its height. tools to be used are maybe a calculator, measuring tape, paper, and a pencil or pen

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2 years ago

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A human body while sleeping generates about 300 BTUs of body heat per hour. If two people are sleeping in a bedroom that is 15 f

Katarina [22]

Given:
one person can produce:
E = 300 BTUs of body heat per hour
dimensions of the bedroom is:
V = 15 ft × 12 ft × 10 ft

required: is the energy per volume if 2 persons sleeps in 7 hours
let T be the total energy produce per volume

T = (300 BTU per hour per person) ( 7 hours) ( 2 person) / ( 15 ft × 12 ft × 10 ft)

T = 2.3 BTU / ft^3

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1 year ago

The figure below shows the graph of f ', the derivative of the function f, on the closed interval from x = -2 to x = 6. The grap

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Answer:

x = -2

Step-by-step explanation:

From x = -2 to x = 5, f' is negative. That means f is decreasing.

From x = 5 to x = 6, f' is positive. That means f is increasing.

The negative area (between x = -2 and x = 5) is larger than the positive area area (between x = 5 and x = 6). That means f decreases more than it increases.

So f is an absolute maximum at x = -2.

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2 years ago

A gallon of stain is enough to cover 200 square feet of decking. Bradley has two areas of decking he would like to cover with st

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