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raketka [301]
3 years ago
5

I need help...... someone plzzz help

Mathematics
2 answers:
bagirrra123 [75]3 years ago
8 0
The answer is 58 and 39
BaLLatris [955]3 years ago
8 0

Answer:

x is 58. y is 34

Step-by-step explanation:

x + y = 97.

x - y = 19

If you add the 2 equations together, isolate the variable x, and then plug that number into the first equation, you get these numbers.

x + y + (x - y) = 97 + 19

2x = 97 +19

2x = 116

divide both sides by 2

x = 58

plug it into the first equation and solve for y and you'll get 34.

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3 years ago
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What is (-33x-78)+(5x8x9x10)divided by9.75
kherson [118]

Answer:

<em>6,174</em>

Step-by-step explanation:

(-33 * - 78) + (5 * 8 * 9 * 10)

Remove the brackets:

-33 * - 78 + 5 * 8 * 9 * 10

Solve like so:

-33 * - 78 = 2,574

5 * 8 * 9 * 10 = 3,600

(2,574) + (3,600)

2,574 + 3,600 = 6,174

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3 years ago
May someone please help me ASAP
Ivenika [448]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Drag each set of column entries to the correct location in the matrix equation. Not all sets of entries will be used. A biker ne
ANEK [815]

Answer:

The matrix equation is \left[\begin{array}{ccc}1&1&1\\1&-1/2&0\\0&2&-1\end{array}\right]=\left[\begin{array}{c}120&35&20\end{array}\right]

Step-by-step explanation:

* Lets change the story problem to equations

- The distance between the starting point and checkpoint 1 is x

- The distance between checkpoint 1 to checkpoint 2 is y

- The distance between checkpoint and the finish line is z

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∴ x + y + z = 120 ⇒ (1)

-The distance from the starting point to checkpoint 1 is 35 miles

 more than half the distance from checkpoint 1 to checkpoint 2

∵ The distance from the starting point to checkpoint 1 is x

∵ The distance from checkpoint 1 to checkpoint 2 is y

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∴ x = 35 + (1/2) y ⇒ subtract (1/2) y from both sides

∴ x - (1/2) y = 35 ⇒ (2)

- The distance from checkpoint 2 to the finish line is 20 miles less

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∵ The distance from checkpoint 2 to the finish line is z

∵ the distance from checkpoint 1 to checkpoint 2 is y

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∴ z + 20 = 2y ⇒ subtract z from both sides

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* Now lets write the three equations

# x + y + z = 120 ⇒ (1)

# x - (1/2) y = 35 ⇒ (2)

# 2y - z = 20 ⇒ (3)

- Now lets write the matrix equation that models this situation

∴ \left[\begin{array}{ccc}1&1&1\\1&-1/2&0\\0&2&-1\end{array}\right]=\left[\begin{array}{c}120&35&20\end{array}\right]

6 0
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What number is the same as distance from 0 on a number line as 1 1/2
Elena-2011 [213]

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Step-by-step explanation:

Here's a hint. I hope this helps.

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