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kondor19780726 [428]
3 years ago
9

Please assist me! I will give the brainliest answer! Plus extra points!!

Mathematics
1 answer:
Artyom0805 [142]3 years ago
3 0
Step 1: Replace y in the second equation with the right side of first equation like that:
x+4=-2x-2

Step 2: Solve that simple equation:
x+4=-2x-2
x+2x=-2-4
3x=-6
x=-6/3=-2

Step 3: Replace x of first equation with found value and solve it:
y=-2+4
y=2

So, the solution is: x=-2 and y=2.
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Two groups of staff at a store are making flowers to decorate the entrance. If Group A were to do it alone, it would take them 1
Tcecarenko [31]

Answer:

\dfrac{6750}{7}

Step-by-step explanation:

Let x be the number of flowers. If Group A were to make x flowers alone, it would take them 10 hours to complete the task, then they make \dfrac{x}{10} flowers in an hour.  If Group B were to make x flowers alone, it would take them 15 hours to complete the task, then they make \dfrac{x}{15} flowers in an hour.

The groups decided to work together. They can make \dfrac{x}{10}+\dfrac{x}{15}=\dfrac{x}{6} together in an hour and it takes them \dfrac{x}{\frac{x}{6}}=6 hours. Group B took a break for 1 hour and 40 minutes (1\dfrac{2}{3} hour), then Group B works

6-1\dfrac{2}{3}=4\dfrac{1}{3} hours.

Thus,

\dfrac{x}{10}\cdot 6-\dfrac{x}{15}\cdot 4\dfrac{1}{3}=300,\\ \\\dfrac{3x}{5}-\dfrac{13x}{45}=300,\\ \\14x=300\cdot 45=13500,\\ \\x=\dfrac{13500}{14}=\dfrac{6750}{7}.

6 0
3 years ago
You have entered a pie baking contest. In the contest, you must make several pies for the judges to taste. You will make your fa
andreyandreev [35.5K]

Answer:

x=2.5 cups are needed  for 2 pies

Step-by-step explanation:

4/5 or 0.8

Fraction form: 4/5x = 2   x= 5/4

Decimial form: 0.8x = 2   x = 2.5

Mixed number form: 2 1/2

Hope that helped :)

8 0
2 years ago
What is 243.00 minus 15% discount?
balu736 [363]
100-15=85
Therefore 0.85 is the multiplier
So 243.00 times by 0.85 = 206.55
8 0
1 year ago
Subtract. (6x - 3) - (2x -2) What is the answer?
kirill115 [55]
4x-1 all u got to do is remove the parentheses and collect the like terms
6 0
3 years ago
When rolling a standard number cube: P(3 and then even)?
Fynjy0 [20]
B could be the only answer
8 0
3 years ago
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