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vagabundo [1.1K]
4 years ago
14

Select the best answer for the question

Mathematics
1 answer:
Nezavi [6.7K]4 years ago
7 0
Parentheses aka 3+2, so D
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Solve the system of equations by the addition method.
Eva8 [605]

\left \{ {{\frac{x}{2}-y=7 } \atop {-\frac{x}{7}+\frac{2y}{7}= -2 }} \right. \left \{ {{\frac{x}{2}.2-2y=2.7} \atop {-\frac{x}{7}.7+\frac{2y}{7}.7= -2.7}} \right. \left \{ {{x-2y=14} \atop {-x+2y=-14}} \right. \left \{ {{0x=0} \atop {y={\frac{x}{2}-7}} \right.

ANSWER: B

ok done. Thank to me :>

8 0
3 years ago
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Please explain this!!!!!!!!!!!!!!!!!!!!
BigorU [14]

Answer:

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Step-by-step explanation:

6 0
4 years ago
Jack has some marbles. He has ten more red marbles than blue marbles. He has fewer yellow marbles than blue marbles.
kap26 [50]

Answer:

<u>Jack has at least 15 marbles: 12 red, 2 blue and 1 yellow.</u>

Step-by-step explanation:

1. Let's review the information given to us to solve the problem correctly:

Number of red marbles = 10 more than blue marbles

Number of yellow marbles fewer than blue marbles

2. How many of each color marble could Jack have?

r = Number of red marbles

b = Number of blue marbles

y = Number of yellow marbles

r = b + 10

y < b

If y = 1, then b ≥ 2, and r = b + 10,

fulfilling the three conditions, we have:

<u>y = 1, b = 2, and r = 12</u>

5 0
3 years ago
If a triangle has a height of 12 inches and a base of 5 inches, what's its area?
Mila [183]
C is the correct answer

6 0
3 years ago
Read 2 more answers
During the World Series the host Citywide Hotel a occupancy Rose 21% over the prior busiest night if the busiest night had been
Natalka [10]

Answer:

The new record was 91.96%.

Step-by-step explanation:

As per the given statement: During the World Series the host Citywide Hotel a occupancy Rose 21% over the prior busiest night if the busiest night had been 76% occupancy.

To find the new record of occupancy.

We will find the 21% of 76% and then added it to 76%.

\text{New record} = \text{old record} + \text{Increase in record}

New record = 76\% +(21\% \times 76\%)

New record = \frac{76}{100} +(\frac{21}{100}\times \frac{76}{100})

New record = 0.76 + (0.21 \times 0.76) = 0.76 + 0.159 = 09196

Convert this decimal number into percentage by just multiplying a number by 100 we get;

New record = 0.9196 \times 100 = 91.96\%

Therefore, the new record was 91.96%


4 0
4 years ago
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