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Reika [66]
4 years ago
8

Simplify this problem, it on the picture

Mathematics
2 answers:
Schach [20]4 years ago
7 0

the answer is

1 over 4

or

0.25

cupoosta [38]4 years ago
3 0

For this case we must simplify the following expression:

\frac {\frac {7} {8} + (- \frac {2} {3})} {\frac {5} {6}} =

We know that: + * - = -

So:

\frac {\frac {7} {8} - \frac {2} {3}} {\frac {5} {6}} =

We solve the subtraction of the numerator:

\frac {\frac {3 * 7-8 * 2} {8 * 3}} {\frac {5} {6}} =\\\frac {\frac {21-16} {24}} {\frac {5} {6}} =\\\frac {\frac {5} {24}} {\frac {5} {6}} =

Applying double c:

\frac {5 * 6} {24 * 5} =\\\frac {30} {120} =\\\frac {1} {4}

Answer:

\frac {1} {4}


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What is 9/10 divided by 6.5
noname [10]

Answer:

0.13846153846

3 0
4 years ago
Read 2 more answers
For every $5 dollars Micah saves, his parents give him $10.
kicyunya [14]
QUESTION A.

m (Micah's savings) 5 10 15 20
p (Parents') 10 20 30 40

p = 2m


QUESTION B.

p = 2X150
p = $300

7 0
4 years ago
The standard form of a quadratic equation is given as y=ax^2+bx+c and vertex form is given as y=a(x−h)^2+k. Write a formula that
Tju [1.3M]

Answers:

h = -\frac{b}{2a}\\\\k = \frac{-b^2+4ac}{4a}\\\\

where 'a' cannot be zero.

=========================================================

Explanation:

The vertex is (h,k)

The x coordinate of the vertex is h which is found through this formula

x = -\frac{b}{2a}

For example, if we had the quadratic y = 3x^2-6x+5, then we'll plug in a = 3 and b = -6 to get: h = -\frac{b}{2a} = -\frac{-6}{2*3} = 1

------------

To find the value of k, we plug that h value into the original standard form of the quadratic and simplify.

y = ax^2+bx+c\\\\k = ah^2+bh+c\\\\k = a\left(\frac{-b}{2a}\right)^2+b\left(\frac{-b}{2a}\right)+c\\\\k = a*\frac{b^2}{4a^2}+\frac{-b^2}{2a}+c\\\\k = \frac{b^2}{4a}+\frac{-b^2}{2a}+c\\\\

k = \frac{b^2}{4a}+\frac{-b^2}{2a}*\frac{2}{2}+c*\frac{4a}{4a}\\\\k = \frac{b^2}{4a}+\frac{-2b^2}{4a}+\frac{4ac}{4a}\\\\k = \frac{b^2-2b^2+4ac}{4a}\\\\k = \frac{-b^2+4ac}{4a}\\\\

It's interesting how we end up with the numerator of -b^2+4ac which is similar to b^2-4ac found under the square root in the quadratic formula. There are other ways to express that formula above. We need a \ne 0 to avoid dividing by zero. The values of b and c are allowed to be zero.

7 0
3 years ago
(4x + 8x - 5) + (3x2 + 6x - 7)
ch4aika [34]

Answer:

7x^2 + 14x - 12

Step-by-step explanation:

Add like terms:

(4x + 8x - 5) + (3x2 + 6x - 7) becomes:

  4x^2 + 8x - 5               or (grouping like terms in columns):

+ 3x^2 + 6x - 7

---------------------

 7x^2 + 14x - 12

5 0
3 years ago
bicycle costs $150. It is advertised on sale for 32% off. What is the cost savings? Solve using two different methods.
alina1380 [7]
The savings is the amount taken off or 32% of 150

32% of 150 is 0.32 times 150=48

savings is $48


or you can do
150/100=x/32
cross multiply to get
x=48


so savings is $48
5 0
3 years ago
Read 2 more answers
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