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jeyben [28]
3 years ago
7

I dont know how to do this one :(((

Mathematics
1 answer:
MaRussiya [10]3 years ago
3 0

Answer:

y=1.8

Step-by-step explanation:

You can compare the equation to slope intercept form where b = mid-line

f(x)=5.6 sin(1.2x-2.3)+1.8

y=mx+b

5.6 ⇒ m

sin(1.2x-2.3) ⇒ x

1.8 ⇒ b

~Hope this helps!~

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2d+7/6-d-5/3=0 Tell me the answer ​
Andrej [43]

Answer:

D=1/2

Step-by-step explanation:

Multiply the numbers

Subtract the numbers

Combine like terms

put 1/2 to the two parts of the equation

last but not least, simplify

4 0
2 years ago
(a) Use the fundamental theorem of algebra to determine the number of roots for 2x^2 + 4x + 7
zysi [14]

Answer:

Step-by-step explanation:

A 2nd order polynomial such as this one will have 2 roots; a 3rd order polynomial 3 roots, and so on.

The quadratic formula is one of the faster ways (in this situation, at least) in which to find the roots.  From 2x^2 + 4x + 7 we get a = 2, b = 4 and c = 7.

Then the discriminant is b^2 - 4ac, or, here, 4^2 - 4(2)(7), or -40.  Because the discriminant is negative, we know that the roots will be complex and unequal.

Using the quadratic formula:

       -4 ±√[-40]         -4 ± 2i√10

x  = ------------------ = ------------------

                4                       4

                                       -2 ± i√10

Thus, the roots are x = ------------------

                                               2

4 0
3 years ago
True or false? I'm deductive thinking, you start with a given set of rules and conditions and determine what must be true as a c
aksik [14]
Deductive thinking: When you start with a given set of rules and conditions and determine what must be true as a consequence.

So the answer is true.
7 0
3 years ago
Find the solution to the system of equations below (you can do this by substitution or elimination).
rewona [7]

Step-by-step explanation:

y=6+4x, as equation (iii)

=> -5x-(6+4x)=21

=> -5x-6-4x=21

=> -5x-4x-6=21

=> -9x-6=21

=> -9x=21+6

=> -9x=27

x= -3, by dividing both sides by -9

So, by inserting x in the first equation,

=> -4(-3)+y=6

=> 12+y=6

=> y=6-12

=> y= -6.

Therefore, x= -3 and y= -6

8 0
2 years ago
Lisa studies 5 hours for a particular test and gets a score of 77. At this rate, how many hours would she have to study to get a
Murljashka [212]
77/5=99/x
77x=5*99
77x=495
x=495/77
x=6.4
she needs to study 6.4 hrs to get 99
4 0
3 years ago
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