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Snezhnost [94]
3 years ago
12

What do I do I thought it was a but my teacher said it was wrong so what do I do ?

Mathematics
2 answers:
mylen [45]3 years ago
4 0

Do length × width × hight

you just get 840 cf

faltersainse [42]3 years ago
4 0
The answer is c
V=1/2a•c•h
V=0.5(7)•10•12
V=3.5(10)•12
V=30(12)
V=420
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Oxana [17]

Answer:

I dont really know what your asking :/

Step-by-step explanation:

7 0
3 years ago
The points in the table lie on a line. find the slope of the line.
MatroZZZ [7]

Answer:

  -7/6

Step-by-step explanation:

The slope formula can be used with any pair of points.

  m = (y2 -y1)/(x2 -x1)

  m = (1 -8)/(-2 -(-8)) = -7/6

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5 0
2 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
The tail on Alex's dog is 5 1/4 inches long. This length is between which two inch marks on a ruler
Andrei [34K]
5 and 6 because 5 1/4 = 5.25.
5.25 is less than 6, but greater than 5.
8 0
3 years ago
Read 2 more answers
I need help I would really thank whoever answers this for me
Mars2501 [29]
To do these problems, you plug in the ‘n’ value given into the equation.

a. 6j - 3 : j = 4
6(4) - 3
24 - 3
21

b. 1/2b + 5 : b = 14
1/2(14) + 5
7 + 5
12

c. 8 + 4k : k = 3.5
8 + 4(3.5)
8 + 14
22
6 0
3 years ago
Read 2 more answers
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