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2 years ago

Can you please help. I think i got the first step but i need guidance.

Mathematics

1 answer:

Amanda [17]2 years ago

8 0

When it says "is a less than b" , it means b - a not a-b.

x+y +z = 105
z = 10y - 11
2x = 3y + 7

Substitute expressions in terms of "y" for x and z in top equation.
$\frac{3y+7}{2} + y + (10y-11) = 105 \\ \\ (3y+7) + 2y+2(10y-11) = 210 \\ \\ 25y-15 = 210 \\ \\ y = \frac{225}{25} = 9$

Substitute value of y to find x and z:
$z = 10y -11 = 10(9) - 11 \\ \\ z = 79 \\ \\ 2x = 3y+7 = 3(9) +7 \\ \\ 2x = 34 \\ \\ x = 17$

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Answer:

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Step-by-step explanation:

4x+1=5

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(-3± $2i\sqrt{31}$ )/8

Step-by-step explanation:

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2 years ago

In order to develop a more appealing cheeseburger, a franchise used taste tests with 13 different buns, 5 different cheeses, 2 t

JulsSmile [24]

Answer:

<h3>If the taste tester takes 10 minutes to eat a cheeseburger, then it would take him is $3276\times 10 = 32760$ minutes Eating round the clock, it would take him is $\frac{546}{24} = 22 days 18 hours$ </h3>

Step-by-step explanation:

Given that "In order to develop a more appealing cheeseburger, a franchise used taste tests with 13 different buns, 5 different cheeses, 2 type of lettuce, and 3 types of tomatoes"

From the given we can write

13 buns

8 cheese

4 lettuces

3 tomatoes

∴ There would be different cheeseburger combinations is given by

$13\times 8\times 4\times 3 = 3,276$

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$3276\times 10 = 32760$ minutes

Eating round the clock, it would take him

$\frac{32760}{60}=546$ hours

$\frac{546}{24} = 22 days 18 hours$

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3 years ago