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3 years ago

How can you tell that a system of linear equations will have infinitely many solutions without computation?

1 answer:

3 0

If you can manipulate the two equations so that they have exactly the same coefficients (e. g., 3x + 4y = 8 and 2x + 4y = 8), then you conclude that the two lines coincide (overlap), and that there are thus infinitely many solutions.

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Given the sequence below, what is the 9th term? 2, 1, 4, -1, 6, ...

jolli1 [7]

Answer:

The 9th term would be 10.

Step-by-step explanation:

Each of the odd terms is 2 more than the previous. We do not even need to look at the even terms to find the 9th one.

2, odd, 4, odd, 6, odd, 8, odd, 10

8 0

3 years ago

the walls of a square room need pain each of the four walls is 12 ft wide by 8.5 feet tall. One gallon of paint covers 75ft^2. h

Bingel [31]

Answer:

You would need 2 1/2 gallons of paint to finish the room.

Step-by-step explanation:

Step 1: 12 x 8.5

Step 2: you should get 102. Then multiply 102 x 4

Step 3: then divide by 150 (which is the quotent of 75 x 2)

Your finally should be 2.72 :)

8 0

3 years ago

I NEED HELP!!<br>answer from the image below <br><br>m∠BCD =

nevsk [136]

Answer:

28 degrees

Step-by-step explanation:

If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent.The corresponding angles are the ones at the same location at each intersection.

In the figure ABD and EDF are corresponding angles. So they are equal

So equation the angle ABD and EDF , we get

(3x+4) = (7x-20)

Group the like terms,

3x-7x = -20-4

-4x = -24

$x = \frac{-24}{-4}$

x = 6

Thus BCD will be,

(6x - 8)

=>(6(6)-8)

=>(36-8)

=> 28 degrees

4 0

3 years ago

I need help with all of these I don’t get it

pochemuha

The first question each friend gets 1/8 of the whole pizza
for half of the pizza each friend gets 1/4 so that times 2 equals 1/8

The second question one person gets 1/15 of the brownie pan
1/5 times 3 equals 1/15

The third question 1/3 cup one serving 1 cup three servings three times six equals 18 servings

The fourth question 1/5 cup one muffin one cup 5 muffins five times nine equals forty-five muffins

Hope this helps

8 0

3 years ago

Simplify 4 over 7 divided by 3 over negative 8

Stolb23 [73]

-1 5/11

Step-by-step explanation:

Dividing fractions is easy as pie, flip the second one over then multiply

6 0

3 years ago