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Artemon [7]
3 years ago
5

Which expression is equivalent to (9x - 3 1/8) - (7x + 1 3/8)?

Mathematics
1 answer:
serg [7]3 years ago
8 0
STEPS TO GET THE CORRECT ANSWER:

First write your question like this:
{ ( [9x] [-31/8] ) - ( [7x] [+13/8] ) }

2: You need to subtract 9x and 7x from (9x-31/8)-(7x+13/8) you get 2x. So now you know that the answer has 2x. Eleminate A) and D).

3: Then need to subtract -31/8 from +13/8. You get -11/2.
Turn -11/2 into a mixed number you will get -5 1/2.

4: Put 2x and -5 1/2 together and you would get 2x-5 1/2

But answer C.) is closest to 2x-5 1/2 so the answer is

ANSWER: C.) 2x-4 1/2

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2 vertical buildings are 42 metres apart and the shorter building is 135m high. The angle of elevation from the top of the short
ipn [44]

Answer:

Step-by-step explanation:

base=42 m

height=h=?

base angle θ=60°

tan 60=h/42

h=42tan 60=42√3≈72.75 m

height of taller building=135+42√3 m≈135+72.75≈207.75 m≈208 m

6 0
2 years ago
Need help, have to submit this very soon!!​
Brut [27]

Answer:

see explanation

Step-by-step explanation:

length = \frac{60}{8} = 7.5 in

scale factor = \frac{image}{original} = \frac{8}{60} = \frac{2}{15}

---------------------------------------------------

length = \frac{192}{4} = 48 cm

scale factor = \frac{omage}{original} = \frac{4}{192} = \frac{1}{48}

5 0
2 years ago
gabriela has 4 times as many erasers as leona.leona has 8 erasers.how many erasers does gabriella have
ICE Princess25 [194]
4*8=32
Gabriella has 32 erasers.
8 0
3 years ago
Which of the following points lies in the solution set to the system of inequalities shown below
Oduvanchick [21]

Answer:

1,2, and 4

Step-by-step explanation:

I attached a picture with the graph

y= -4 is a straight horizontal line (red line) and  

y≤10 will give a horizontal line passing trough y=10 (blue line)

the solution is all points under and on the line  y=10

1, 2, and 4 are part of the solution set

(the blue area is the solution of the system of equations)

7 0
2 years ago
Read 2 more answers
If x ≥ 0, then x + |x| = ?
oee [108]

Answer:

x + |x| = 2x

Step-by-step explanation:

if the number is more than 0 or greater, then if you add it to itself, it will be equal to the value of two of the previous number. Hope this helps

8 0
2 years ago
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