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irakobra [83]
3 years ago
10

What is -3 increased by -9

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
7 0

Answer:

-12

Step-by-step explanation:

-3 + -9 = 12

hope this helps

Doss [256]3 years ago
4 0

Answer:

-12

Step-by-step explanation:

-3 + -9

turns into

-3 - 9

Which means on the number line, we start at -3 and move to the left 9 units.

When we move to left on the number line by 9, we are at -12.

Which means -3 - 9 (-3 + -9) = -12

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Help me pleseeeeeee asappppp
pentagon [3]

Answer:

(-2.5, -10)

Step-by-step explanation:

Midpoint Formula: (\frac{x_1+x_2}{2} ,\frac{y_1+y_2}{2} )

Step 1: Plug in

x = (-2 + -3)/2

y = (-8 + -12)/2

Step 2: Evaluate

x = -5/2

y = -20/2 = -10

Step 3: Format into coordinates

(-5/2, -10)

Step 4: Convert to decimal

(-2.5, -10)

4 0
3 years ago
Find the time (in years) these accounts lasted for.
OLga [1]

9514 1404 393

Answer:

  2 years

Step-by-step explanation:

Use the interest formula with the given information. Solve for t.

  I = Prt

  30 = 500×0.03×t

  30/15 = t = 2 . . . . . . divide by the coefficient of t

The account lasted 2 years.

8 0
3 years ago
Find S20 for the geometric series 4 + 12 + 36 + 108 + … 5,034,043,187 5,123,498,245` 6,973,568,800 7,321,089,348
yan [13]
A_{1} = 4
a_{2} = 12

a_{2} = a_{1}*q
12 = 4q
q = 3

S20 = a_{1}*\frac{(q^{20}-1)}{(q-1)}

S20 = 4*\frac{(3^{20}-1)}{3-1}

S20 = 4*\frac{3486784401-1}{2}

S20 = 2*3486784400

S20 = 6,973,568,800
8 0
3 years ago
A fingernail grows about 0.1 millimeter eachday how much does a fingernail grow in 90 days
strojnjashka [21]

Answer:

9 mm

Step-by-step explanation:

90*0.1=9

5 0
3 years ago
Read 2 more answers
Micheal runs 8m, South then turns around and runs 12m North. what is the distance and displacement covered?
Dmitriy789 [7]

Answers:

  • Distance = 20 meters
  • Displacement = 4 meters North

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

Explanation:

To find the distance traveled, we add the two values to get 8+12 = 20 meters.

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

For the displacement, I recommend drawing a vertical number line. Mark the values 0, -8 and 4 on the number line. Going from 0 to -8 represents going 8 meters south. From -8, move up 12 units and you should arrive at 4 on the number line, which represents being 4 meters north of the original position 0. The displacement only cares about the start and end points, more specifically, the change between the two. The direction is also important for the displacement.

In other words, Michael started at 0, did a bunch of movements, and ended up at 4 on the number line. So we can simplify all those movements to one single movement of "move north 4 meters" to represent the displacement.

As you can see, it's possible to get a displacement of 0 meters, which is not the case for the distance traveled in the previous section.

8 0
2 years ago
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