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4 years ago

Use the formula d=rt to find the value of the missing variable. r=3 mph, t=9 hours find d= mi

2 answers:

7 0

Use the distance equation (d=rt) and plug in the known variables:
d=rt
d=3 x 9

Solve for d:
d=27 miles

Hope this helps :)

oksian1 [2.3K]4 years ago

4 0

D=27 miles
hope this helps :):)

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3 years ago

Through :(4,2),parallel to y =-3/4x-5<br> Solve for y

alex41 [277]

Answer:

y = $\frac{ - 3}{4}$ x + 5

Step-by-step explanation:

The Line equation is:

y = $\frac{- 3}{4} x - 5$

The line equation is in the form of y = m x + c

Slop of this line is (m1) = $\frac{ - 3}{4}$

Let another line with slop (m2) , passes through point (4 , 2)

As per question the another line is parallel to the given line equation

So, slop of both the lines are equal

∴ (m2) = (m1) = $\frac{ - 3}{4}$

Hence equation of another line with slop $\frac{ - 3}{4}$ and passing through points ( 4 , 2) is

y - y1 = (m2) (y - x1)

I.e y - 2 = $\frac{ - 3}{4}$ (x - 4)

Or, $4\times (y -2) = (- 3)\times (x - 4)$

Or , 4y - 8 = -3x + 12

Or, 4y = -3x + 12 + 8

Or , 4y = -3x + 20

∴ y = $\frac{ - 3}{4}$ x + 5

Hence The value of y = $\frac{ - 3}{4}$ x + 5 Answer

6 0

4 years ago

Because of the unique line postulate, we can draw unique line segment PM. Using the definition of reflection, PM can be reflecte

Karolina [17]

By the definition of reflection, point P is the image of itself and point N is the image of<u> Point M. </u>

<u></u>

<h2 /><h2>Given that</h2>

Because of the unique line postulate, we can draw a unique line segment PM.

Using the definition of reflection, PM can be reflected over line l.

By the definition of reflection, point P is the image of itself and point N is the image of ________.

Because reflections preserve length, PM = PN. Point M point Q segment PM segment QM.

<h3></h3><h3>According to the question</h3>

P is a point on the perpendicular bisector, l, of MN.

A Reflection is a transformation in which the figure is the mirror image of the other.

Every point is a mirror reflection of itself.

By the definition of reflection, point P is the image of itself, point N is the image of M.

Line l acts as a Line of symmetry or axis of reflection.

Reflections preserve length so PM = PN.

By the definition of reflection, point P is the image of itself and point N is the image of<u> Point M. </u>

Because reflections preserve length, PM = PN.

Point M point Q segment PM segment QM.

Hence, point N is the image of M.

To know more about Reflection click the link given below.

brainly.com/question/17003791

7 0

3 years ago

A forensic detective is called to the scene of a murder at 2 am. When she checks the temperature of the body, she sees that it i

Readme [11.4K]

Newton's Law of cooling is
$T(t)=T_{a}+(T_{0}-T_{a})e^{-0.1947t}$
where
T(t) = temperature of the body after t hours, 80 °F
$T_{a}$ = ambient temperature, 65 °F
$T_{0}$ = normal body temperature, assumed to be 98.6 °F

The elapsed time since death is obtained from
$65+(98.6-65)e^{-0.1947t|} = 80$
$33.6e^{-0.1957t}=15$
$-0.1947t=ln \frac{15}{33.6}$
$t= \frac{ln(15/33.6)}{-0.1947} =4.142$

4.142 hours before 2 am is 9:52 pm (the previous day) approximately.

Answer: 9:52 pm the previous day.

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3 years ago

The greatest common factor using prime factorization for 28 and 63

Degger [83]

The answer is seven im sure

7 0

4 years ago

Read 2 more answers