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MariettaO [177]
4 years ago
5

What is the solution to the following system?

Mathematics
1 answer:
Orlov [11]4 years ago
3 0

\left\{\begin{array}{ccc}-2x-y=1&|\cdot(-2)\\-4x-2y=-1\end{array}\right\\\underline{+\left\{\begin{array}{ccc}4x+2y=-2\\-4x-2y=-1\end{array}\right}\ \ \ |\text{add both sides}\\.\ \ \ \ \ 0=-3\ \ \ FALSE\\\\Answer:\ B.\ no\ solutions

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Brian has $78 and wants to purchase tapes through a music club. Each tape costs $7.50. The music club will add a total postage a
kramer

Answer:

9 tapes

Step-by-step explanation:

First, subtract the handling charge from his $78.

78 - 3.50 = 74.5

So, Brian has $74.50 to purchase tapes. Each tape costs $7.50, so let's find out how many he can purchase.

74.50 / 7.50 = 9.933 (approximately)

Since Brian can't buy 0.933 of a tape, he will only be able to buy 9 tapes.

7 0
4 years ago
Find all missing angles.
dimaraw [331]

Answer/Step-by-step explanation:

✅m<1 = 180 - 52° = 128° (consecutive interior angles)

✅m<2 and 52° are alternate interior angles. Alternate interior angles are congruent.

Therefore:

m<2 = 52°

✅m<3 and 47° are alternate interior angles. Alternate interior angles are congruent.

Therefore:

m<3 = 47°

✅m<4 = 180 - m<3 (linear pair)

m<4 = 180 - 47 (substitution)

m<4 = 133°

✅m<5 = 180 - (52 + 47) (angles on a straight line)

m<5 = 81°

4 0
3 years ago
Please help. right answer will be brainliest.
jek_recluse [69]

Answer:

24 square units

Step-by-step explanation:

6×4=24

3 0
3 years ago
sutopa has 3/4 the money maneet has. maneet has $18 less than Kim. together, they have $286.40. How much money does each of them
timurjin [86]

The amount of money Kim, maneet and Sutopa have is $115.6, $97.6 and $73.2 respectively.

<h3>Equation</h3>

  • Kim = x
  • Maneet = x - 18
  • Sutopa = 3/4(x-18)
  • Total = $286.40

x + (x - 18) + 3/4(x-18) = 286.40

x + x - 18 + 3/4x - 13.5 = 286.40

2 3/4x = 286.40 + 13.5 + 18

11/4x = 317.9

x = 317.9 ÷ 11/4

= 317.9 × 4 / 11

= 1,271.6 / 11

x = $115.6

So,

Kim = x

= $115.6

Maneet = x - 18

= 115.6 -18

= $97.6

Sutopa = 3/4(x-18)

= 3/4(97.6)

= $73.2

Learn more about equation:

brainly.com/question/4344214

#SPJ1

8 0
2 years ago
From 12 ft to 23 ft? And is it a increase or decrease?
oksian1 [2.3K]

Answer:

Increase

Step-by-step explanation:

If you are going from 12ft to 23ft it is an increase in length

Hope this helps

3 0
3 years ago
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