Write an equation to represent the following statement. k divided by 11 is 7

Mathematics

2 answers:

sergeinik [125]3 years ago

8 0

Answer:

k/11 =7

Step-by-step explanation:

k divided by 11 is 7

k/11 =7

Multiply each side by 11

k/11*11 = 7*11

k = 77

Sonbull [250]3 years ago

5 0

Answer:

K ÷ 11 = 7 or K/11 = 7

Step-by-step explanation:

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The diagonals of a convex quadrilateral are mutually perpendicular. The sum of the lengths of the diagonals is 12. We want to fi

KIM [24]

Answer:

Step-by-step explanation:

Step 1: The Diagonals of the Convex Quadilateral are Mutually Perpendicular this makes the shape a Rhombus Shape

Step 2: The formula for a area of a rhombus is the multiply the two lengths and divide by two.

In this Question we have x×y÷2 or xy/2

Step 3: The sum of the lengths of the diagonals is 12

x+y=12

y=12-x

Therefore, the area, as a function of x alone = x(12-x)/2

Step 4: To find the maximum area, let's find the derivative of the area function in respect to x and then equate to 0.

d/dx(x(12-x)/2)=0

d/dx(12x - x^2) = 0

12-2x=0

12-0=2x

12=2x, divide both sides by 2

x= 6

Step 5: Calculate the Maximum Area

The maximum area will then be 6(12 - 6)/2

= (72-6)/2 = 66/2= 33

So, the maximum area is 33.

3 0

4 years ago

Based on the figure, which of the following equations is also true?

Leno4ka [110]

Answer:

The correct answer is B.

Step-by-step explanation:

Because you know two of the angles in a triangle are 90° and 52°, you can infer that the third angle is 38°. There is a trigonometry rule that states the sine of an angle is equivalent to the cosine of 90° minus that angle, which you can apply to here. Since $Sin(52$ ° $)$ = $\frac{17}{c}$ , you know that $Cos(90$ ° $-52$ ° $)$ or $Cos(38$ ° $)$ also equals $\frac{17}{c}$ , so choice B is the correct answer.