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Masja [62]
3 years ago
14

PLEASE HELP ASAP! WILL UPVOTE!

Mathematics
1 answer:
artcher [175]3 years ago
8 0
1.  equation A is multiplied by -2, yah, right form
turns to -2y=-30+4z
2. wrong, yo didn't distribute the -2 at all, it just dissaperaed, who taught that student how to do math?
after this, all steps are wrong because step 2 is wrong


error in step 2
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I need help with this math isn't my strong suit
aev [14]

Hope This Helps. Have a good day.

3 0
3 years ago
The length of a rectangle is 5 ft less than three times the width, and the area of the rectangle is 50 ft². Find the dimensions
Mariulka [41]

Answer

Length = 10 ft

Width = 5 ft

Explanation

Area of the rectangle given = 50 ft²

Let the width of the rectangle be x

So this means the length of the rectangle will be 3x - 5

What to find:

The dimensions of the rectangle.

Step-by-step solution:

Area of a rectangle = length x width

i.e A = L x W

Put A = 50, L = 3x - 5, W = x into the formula.

\begin{gathered} 50=(3x-5)x \\ 50=3x^2-5x \\ 3x^2-5x-50=0 \end{gathered}

The quadratic equation can now be solve using factorization method:

\begin{gathered} 3x^2-5x-50=0 \\ 3x^2-15x+10x-50=0 \\ 3x(x-5)+10(x-5)=0 \\ (3x+10)(x-5)=0 \\ 3x+10=0\text{ }or\text{ }x-5=0 \\ 3x=-10\text{ }or\text{ }x=5 \\ x=-\frac{10}{3}\text{ }or\text{ }x=5 \end{gathered}

Since the dimension can not be negative, hence the value of x will be = 5.

Therefore, the dimensions of the rectangle will be:

\begin{gathered} Length=3x-5=3(5)-5=15-5=10\text{ }ft \\  \\ Width=x=5\text{ }ft \end{gathered}

7 0
1 year ago
Solve. 7/9 = b/b - 10
kifflom [539]

Answer:

No Solution

Step-by-step explanation:

There are no values of  b

that make the equation true.

No solution

8 0
3 years ago
Leah loves chicken wings and is comparing the deals at three different restaurants. Buffalo Bills has 888 wings for \$7$7dollar
ella [17]

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Cost of 1 wing at Buffalo Bills = \frac{7}{8} =0.875

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Cost of 1 wing at Buffalo Mild Wings = \frac{10}{12}= 0.833

Cost of chicken wings at Wingers = 20 wings at $17

Cost of 1 wing at Wingers = \frac{17}{20}= 0.850

Hence, comparing all the three costs per wing, we can see that Buffalo Mild Wings is serving chicken wings at lowest price of $0.833 per wing.

8 0
3 years ago
Read 2 more answers
One of the corners of a cube is sliced off. The resulting cross section will have a minimum of how many sides?
MakcuM [25]
3, because you cut a corner, you cut through where 3 sides meet.

3 sides
4 0
3 years ago
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