All categories

2 years ago

Do you move the decimale to the left or to the right when multiplying

Mathematics

2 answers:

s344n2d4d5 [400]2 years ago

8 0

Probably
Right
When multiplying

Vesnalui [34]2 years ago

4 0

You move it to the right

You might be interested in

For the period 1997-2003, the number of eggs y (in billions) produced in the United States can be modeled by the function y=-0.2

Viktor [21]

Answer:

Part a) The approximate years were 1998 and 2008

Part b) The graph in the attached figure

Step-by-step explanation:

Part a) we have

$y=-0.27x^{2}+3.3x+77$

For $y=80\ billion\ eggs$

Solve the quadratic equation

$80=-0.27x^{2}+3.3x+77$

$0.27x^{2}-3.3x+3=0$

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$0.27x^{2}-3.3x+3=0$

$a=0.27\\b=-3.3\\c=3$

substitute in the formula

$x=\frac{3.3(+/-)\sqrt{-3.3^{2}-4(0.27)(3)}} {2(0.27)}$

$x=\frac{3.3(+/-)\sqrt{7.65}} {0.54}$

$x=\frac{3.3(+)\sqrt{7.65}} {0.54}=11.23\ years$

$x=\frac{3.3(-)\sqrt{7.65}} {0.54}=0.99\ years$

therefore

The approximate years are

1997+11=2008

1997+1=1998

Part b)

Using a graphing tool

we have

$y=-0.27x^{2}+3.3x+77$

$y=80$

The solution of the system of equations is the intersection point both graphs

The intersection point are (0.99,80) and (11.23,80)

see the attached figure

therefore

The solution part a) is correct

3 0

3 years ago

Can you help me with number 17

andrezito [222]

15 because 112 ounces is 7 pounds and 22-7= 15 hope it helped

8 0

3 years ago

Read 2 more answers

All integer are rational number. true or false? please explain

Elenna [48]

true because integers are all positive numbers, their opposites (negatives), and zero

3 0

3 years ago

Read 2 more answers

Which graph represents 9x2 – 16y2 – 54x + 64y – 127 = 0?

klasskru [66]

Answer:

Right now I'm wondering what kind of class you are taking to get such a weird graph, but I graphed it for you on the screenie.

Step-by-step explanation:

You should though recheck your question for exponents, as 9x2 could be interpreted differently.

Since exponents to not transition well here, I can assume that it was a 9x^2, so please add an exponent symbol ^ between the variables and exponents next time.

3 0

3 years ago

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, usi

Ann [662]

The answer is B. because if u add 11to -8, it becomes 3 andthe other side will already be 3. so 3=3.

8 0

3 years ago