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Sindrei [870]
3 years ago
14

Consider this quadratic equation:

Mathematics
1 answer:
lara31 [8.8K]3 years ago
6 0
A = 6
b = 9
c = -10
hope this helps you!
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Lee Middle School orders 15 textbooks for every 12 students. The table shows how many textbooks the school orders for certain nu
Mariulka [41]

Answer: 90 textbooks


Step-by-step explanation:

everytime you multiply the number of students you multiply the books by the same number. to find how many times 72 was multiplied you divide it by 12.

72 ÷ 12 = 6

then multiply the original number of books (15) by 6.

15 * 6 = 90

so for every 72 students the school orders 90 textbooks

5 0
3 years ago
A straight slide in a playground design makes an isosceles triangle with the
julia-pushkina [17]

Answer:

Option D.

Step-by-step explanation:

  • First, the you need ti understand that the triangle is an isosceles right angled triangle. In other words, the base and height are equal in length. The third side is the slide. This is the longest side.
  • Next, we know that the formula for calculating the area of a right angled triangle is given by:

        A = 1/2 (base × perpendicular height)

  • The perpendicular height is equal to the base. Let's say the base is <em>x</em>. It means that the height is also x, since height = base.
  • Therefore, the formula will be:

       A = 1/2 (x.x)

           =1/2 (x²)

      32 = 1/2 (x²)

     Multiplying both sides by 2 gives:

     32×2 = x²

     64  = x²

       8   = x

To find the third side, we use the Pythagoras theorem:

    C² = A² + B²

         = 8² + 8²

         = 128

   C = √128

       = 8√2

However, the answer will not be exact, so we  multiply the length of the base and height by 2. This gives x = 16 (Length of base = length of height)

Repeating the steps above gives C = √ (16)² + (16)²

                                                           = √256

This corresponds to option D.

3 0
3 years ago
LITERAL EQUATIONS <br><br>K= AP/2 SOLVE FOR A
kvv77 [185]
K=\frac{AP}{2}\ \ \ \ |Multiply\ by\ 2\\\\&#10;2K=AP \ \ \ \ \ |Divide\ by\ P\\\\&#10;\frac{2K}{P}=A\\\\Solution\ is\ A=\frac{2K}{P}.
4 0
3 years ago
Of the 345 7th graders, 40% of them<br> are in band. How many 7 graders<br> are in band?
xz_007 [3.2K]
So first you find 10% which is 34.5
Then you multiply 10% by 4 to get 40% which is = 138
3 0
2 years ago
Read 2 more answers
Tammys desk had 7/12 grams of dust on it she wiped away 5/12 grams of the dust how many grams of dust are left on her desk write
nexus9112 [7]

Answer:

2/12

Step-by-step explanation:

7/12 -5/12 = 2/12

the number 2 can go into 2 once and 12 six times so you should get 1/6 as your answer

7 0
3 years ago
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