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3 years ago

Emma says the length of her favorite movie is 120 minutes, but she has rounded the time to the nearest ten.

Mathematics

1 answer:

marissa [1.9K]3 years ago

4 0

Answer:

B and C are correct

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Giving the figure below, what is the measure of angle JKL

Lubov Fominskaja [6]

The measure of < JKL = 25+25 = 50 degrees.

Angle JOK = 360 -230 = 130 degrees , (where O is the center of the circle)

< OLK = < OJK = 90 degrees ( tangent to a circle)

< LOK = < JOK = 180 - (90+65) = 180 - 155 = 25 degrees

The solution is: < JKL = 25 +25 = 50 degrees

6 0

1 year ago

For circle H, JN = x, NK = 2, LN = 3, and NM = 6. Solve for x. circle H with chords JK and LM intersecting at N inside the circl

vredina [299]

Answer:

x=9

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

$JN*NK=LN*NM$ ----> by intersecting chords theorem

substitute the given values

$(x)(2)=(3)(6)$

solve for x

$x=18/2\\x=9$

4 0

3 years ago

Read 2 more answers

At a certain electronics company, the daily output Q is related to the number of people A on the assembly line by Q=600+√(A+41).

Ber [7]

Answer:

$A=400\ people$

Step-by-step explanation:

we have

$Q=600+\sqrt{A+41}$

where

Q -----> is the daily output

A -----> is the number of people

For Q=621

Find the value of A

substitute and solve for A

$621=600+\sqrt{A+41}$

Subtract 600 both sides

$621-600=\sqrt{A+41}$

$21=\sqrt{A+41}$

squared both sides

$21^{2} ={A+41}$

$441={A+41}$

Subtract 41 both sides

$441-41=A$

Rewrite

$A=400\ people$

3 0

3 years ago

Evaluate when x = 7 and y = 6 <br> 2x - 3y

IRISSAK [1]

The Answer Here Is -4

5 0

3 years ago

Read 2 more answers

What is the missing constant term in the perfect square that starts with x^2-12x

Ipatiy [6.2K]

Essentially, we are trying to find the missing constant term of $(x - a)^2$ (remember that we are subtracting $a$ due to the negative sign in front of the second term). Let's expand this to see what we can work with:

$(x - a)^2$

Set up

$x^2 - ax - ax + a^2 = x^2 - 2ax + a^2$

FOIL and simplify

Now, we know the second term is $12x$ , so let's set the second term in the polynomial we just found equal to $12x$ :

$2ax = 12x$

Set up

$2a = 12$

Divide both sides of the equation by $x$

$a = 6$

Divide both sides of the equation by 2

We have found $a = 6$ . We know the missing constant term is $a^2$ , according to the polynomial we found earlier. Thus, the missing term is:

$a^2 \Rightarrow 6^2 = 36$

The missing constant term is 36.

4 0

3 years ago