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Inessa05 [86]
2 years ago
7

PLEASE HELP ASAP 25 POINTS

Mathematics
1 answer:
Elena L [17]2 years ago
6 0

Answer: B

<u>Step-by-step explanation:</u>

 2x - 3y =  -7   →   2(2x - 3y = -7)   →   4x - 6y = -14

-4x + 6y = -10  →   1(-4x + 6y = -10) → <u>-4x + 6y</u> = <u>-10 </u>

                                                                    0  = -24

                                                                     FALSE

Since this makes a false statement, there are no solutions


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Solve the equation<br><br> 1 . J + -2 = -22
olganol [36]

J + -2 = -22

Adding a negative number changes the equation to subtract ruin:

J - 2 = -22

Now add 2 to both sides to get the answer:

J = -20

7 0
2 years ago
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Kruka [31]

This question is incomplete.

Complete Question

Astrid is in charge of building a new fleet of ships. Each ship requires 40 tons of wood, and accommodates 300 sailors. She receives a delivery of 4 tons of wood each day. The deliveries can continue for 100 days at most, afterwards the weather is too bad to allow them. Overall, she wants to build enough ships to accommodate at least 2100 sailors. How much wood does Astrid need to accommodate 2100 sailors?

Answer:

280 tons of wood.

Step-by-step explanation:

From the above question:

To make 1 ship = we require 40 tons of wood.

1 ship = can accommodate 300 sailors.

Step 1

If :

300 sailors = 1 ship

2100 sailors = y ships

Cross Multiply

300 × y ships = 1 ship × 2100 sailors

y ships = 2100 / 300

y ships = 7

Hence, 2100 sailors can occupy 7 ships.

Step 2

We are told in the question that:

Astrid wants to build enough ships to accommodate at least 2100 sailors. How much wood does Astrid need to accommodate 2100 sailors?

If:

1 ship = 40 tons of wood

Since 7 ships can accommodate 2100 sailors,

7 ships =

7 × 40 tons of wood = 280 tons of wood.

Therefore , Astrid needs 280 tons of wood to accommodate 2100 sailors.

6 0
3 years ago
Answer pleaseeee??? Thanks
inessss [21]

Answer:

True!

Step-by-step explanation:

3(10) - 9

30 - 9

21

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2 years ago
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Kane is training for a marathon. He starts by running 3 miles during every training session.
Masja [62]

Answer:

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If you borrowed $3,500 to buy a new car at 3% interest and paid it back in 4 years. How much would you pay in interest?
tankabanditka [31]

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Step-by-step explanation:

Calculate 3% of 3,500:

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105 per year for 4 years:

105*4 = 420

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