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lesya692 [45]
1 year ago
7

Evaluate the following equations

Mathematics
1 answer:
DochEvi [55]1 year ago
5 0

Step-by-step explanation:

A....

Solution ,

=  \frac{h - 3}{3}  = 3h \\

= h - 3 = 9h

= h - 3 - 9h = 0

= h - 9h = 3

=  - 8h = 3

Change the sign of both side

= 8h =  - 3

= h =  -  \frac{3}{8 }  \\

B....

Solution,

=  \frac{t}{2}  =  \frac{t + 1}{5}  \\

Multiply the both side by the least common multiple to eliminate the fraction...

= 5t = 2t + 2

= 5t - 2t = 2

= 3t = 2

= t =  \frac{2}{3}  \\

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And choose D is 38<br> Some help me
Dmitry_Shevchenko [17]

Answer:A

Step-by-step explanation:

it is equivalent to 180-128 because its the same as the angle under route 2

and above runway 2

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Find an equation of the plane that is parallel to the line of intersection of the planes ( x + 3y + z = 3 ) ( 3x - y - z = 0 ) a
NeTakaya

Answer:

Wow I got the first step

are you looking for the

intersection of the line perpendicular

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3 years ago
Point D(-3.5) is a vertex of triangle DEF.After a rotation of the triangle about the origin, D' is located at (3,-5).Which of th
Nimfa-mama [501]
<h3>Answer: 180 degrees</h3>

note: it doesn't matter if its clockwise or counterclockwise when it comes to 180 degree rotations.

========================================

Explanation:

The rule for 180 degree rotations is

(x,y) ---> (-x, -y)

So the x and y coordinates flip in sign from positive to negative, or vice versa.

Point D ' (-3, 5) rotates to D ' (3, -5) following this rule

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A further detailed break down might look like this

x = -3 becomes -x = -(-3) = 3

y = 5 becomes -y = -5

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6 0
3 years ago
A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which
Aloiza [94]

Answer:

\frac{4cm}{1year}*\frac{10mm}{1cm}*\frac{1year}{365days}

Step-by-step explanation:

Whenever we are doing unit conversions, we have to remember to make the first ratio and then each successive ratio should be put <em>in such a way</em> that the top and bottom cancels out with each unit and whatever we want, remains.

A simple example would be if we were to just convert from cm to mm. Suppose we want to convert 5 centimeters to millimeters. We can write the ratios is 2 ways:

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Second:

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The first one is correct since we want mm, mm should be on top and cm should be on bottom form cm and cm to get canceled.

Now, for our problem, we want mm on top and day on bottom. So, cm and year should cancel. Looking at the first choice, the conversion factors are correct & skimming through, we see that

cm and cm cancels (top and bottom), also year and year cancels (top and bottom), it will leave us with mm on top and days on bottom, <em>which is what we want</em>.

First answer choice is right.

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3 years ago
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What number is less than 8​
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Answer:

any number that isn't 8 or above it

Step-by-step explanation:

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