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Ulleksa [173]
3 years ago
15

Pls help! substitute x = 2 and y = 4 into the following and evaluate. 12/x + 10xy/2

Mathematics
1 answer:
ankoles [38]3 years ago
4 0

Answer:

46 is the answer.

Step-by-step explanation:

12/(2) + 10(2)(4)/2

= 12/(2) + 80/2

= 6 + 40

= 46

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Tanx-cotx / sinxcosx =sec^2-csc^2x. Please show all steps. 
Katarina [22]
\bf \cfrac{tan(x)-cot(x)}{sin(x)cos(x)}\implies \cfrac{\frac{sin(x)}{cos(x)}-\frac{cos(x)}{sin(x)}}{sin(x)cos(x)}\implies \cfrac{\frac{sin^2(x)-cos^2(x)}{cos(x)sin(x)}}{\frac{sin(x)cos(x)}{1}}
\\\\\\
\cfrac{sin^2(x)-cos^2(x)}{cos(x)sin(x)}\cdot \cfrac{1}{sin(x)cos(x)}\implies \cfrac{sin^2(x)-cos^2(x)}{cos^2(x)sin^2(x)}
\\\\\\
\textit{and now, we distribute the denominator}
\\\\\\
\cfrac{sin^2(x)}{cos^2(x)sin^2(x)}-\cfrac{cos^2(x)}{cos^2(x)sin^2(x)}\implies 
\cfrac{1}{cos^2(x)}-\cfrac{1}{sin^2(x)}

and surely you know what that is

3 0
3 years ago
Chart and assignment above, any actual help is appreciated!! Eighth grade math :) No rush! Just due at midnight so please help?
Alex
Wow good luck getting it
3 0
3 years ago
Slope=2/3;y-intercept=-1 write the linear equation in slope -intercept form
Mnenie [13.5K]

Answer:

\large\boxed{y=\dfrac{2}{3}x-1}

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

<em />

We have the slope \bold{m=\dfrac{2}{3}}, and the y-intercept <em>b = -1.</em>

Substitute:

y=\dfrac{2}{3}x-1

6 0
3 years ago
______1. 2 + 3 = 9 ______2. 4 &gt; 5 + 7 ______3. 9 = 12 + 2 ______4. 2 − 3 ≥ 2 ______5. 61 ≠ 5 − 12
Makovka662 [10]

Answer:

1. Not True

2. Not True

3. Not True

4. Not True

5. True

Step-by-step explanation:

As given,

1.

2 + 3 = 9

⇒ 5 = 9

Not True

2.

4 > 5 + 7

⇒4 > 12

Not True

3.

9 = 12 + 2

⇒9 = 14

Not True

4.

2 - 3 ≥ 2

-1 ≥ 2

Not True

5.

61 ≠ 5 - 12

⇒61 ≠ -7

True

5 0
3 years ago
I showed you a curvilinear relationship between age and memory. Now, I want you come up with two variables that you think might
Bogdan [553]

Answer:

Step-by-step explanation:

Curvilinear relationship

A curvilinear relationship is a type of relationship in which there are two variables. As and when the value of one variable increases, so does the value of the other. This continues until a certain point, after which an increase in one variable decreases the value of the other.

Example:

The two variables are - Work pressure and work performance. As work pressure increases, work performance increases until a certain point. After a threshold, when work pressure exceeds, work performance drops. This results in a curvilinear relationship between the two variables.

4 0
3 years ago
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