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Jet001 [13]
2 years ago
10

What is 4 over 15 plus negative 7 over 45

Mathematics
1 answer:
IgorLugansk [536]2 years ago
8 0

Answer:

If what I think youre saying is correct, then it should be 1/9

Step-by-step explanation:

4/15 + (-7/45)

Multiply both numerator and denominator of 4/15 by 3 so that the denominator becomes 45 to match the other fraction.

12/45 + (-7/45)

As the fraction on the right side is negative, it is taken away from the left fraction, hence:

(12 - 7)/45

Therefore, with simple subtraction,

5/45

Simplify to 1/9

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If the length of each side of a cuboid decreases by 20%, find the percentage decrease in its volume.
just olya [345]

Answer:

Step-by-step explanation:

(1+25 /100) (1-20/100) (1-50/100)  <1

5/4 x 4/5 x 1/2 <1

Decrease in volume (in percent)

(1+25 /100) (1-20/100) (1-50/100)  x 100

=48.8%

6 0
2 years ago
Part A picture above
-BARSIC- [3]

Answer:

<em>Part A </em>C = (10,5)<em>  Part B </em>C. D'(0,10)

Step-by-step explanation:

<em>Part A</em>

Since c is at the point (2,1) in relation to the origin, we can multiply those distances by our scale factor of 5

(2,1) * 5 = (10,5)

The new point C is going to be (10,5)

<em>Part B</em>

If you dilate with a factor of 5 -- relative to the origin -- you have to multiply the distance from <em>the origin</em> by 5.

In this case, point D is already on the y axis, so it's x value wouldn't be affected. Point D is currently 2 units away from (0,0), so we can multiply 2*5 to get 10 -- our ending point is (0,10)

8 0
3 years ago
17 m<br> 15 m<br> 17 m<br> 11 m<br> 16 m<br> PLEASE HELP ME I WILL THANK YOU LATERR :)))
REY [17]

Answer:

790  for surface area

1800 for volume

Step-by-step explanation:

3 0
3 years ago
Six times a number increased by 5
sergey [27]
I'm not quite sure what you asking here but if your asking how to answer it in "math terms" than I'll be happy to explain :)

So "times" means multiply and "increase" means add so righting this in math terms would be 
6x + 5 
because it's six times "a number" which you can replace with x!

Let me know if you have any questions :3 
7 0
3 years ago
Read 2 more answers
Which quadrilateral makes this statement true?<br>Quadrilaterat ABCD≈____​
Vinvika [58]

Answer:

FGHE

Step-by-step explanation:

They have the same angles size

6 0
3 years ago
Read 2 more answers
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