MATHEMATICS MIDDLE SCHOOL

Help please Math Geometry

Answers

Answer 1

Answer:

It's the parallelogram. Therefore

ML = JK, JM = KL, m∠L = m∠J, m∠M = m∠K and m∠M + m∠L = 180°.

ML = 21 → JK = 21

JM = 29 → KL = 29

m∠L = 127° → m∠J = 127°

m∠M + m∠L = 180° → m∠M + 127° = 180° → m∠M = 53°

m∠M = 53° → m∠K = 53°

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Solve each equation by completing the square. If necessary, round to the nearest hundredth.19. X²-18x=19
20. 4 a²+8a-20=0

Answers

$x^2-18x=19\n\nx^2-2x\cdot9+9^2-9^2=19\n\n(x-9)^2-81=19\n\n(x-9)^2=19+81\n\n(x-9)^2=100\iff x-9=\pm√(100)\n\nx-9=-10\ \vee\ x-9=10\n\nx=-10+9\ \vee\ x=10+9\n\nx=-1\ \vee\ x=19$

$4a^2+8a-20=0\ \ \ \ /:4\n\na^2+2a-5=0\n\na^2+2a\cdot1+1^2-1^2=5\n\n(a+1)^2-1=5\n\n(a+1)^2=5+1\n\n(a+1)^2=6\iff a+1=\pm\sqrt6\n\na=-\sqrt6-1\ \vee\ a=\sqrt6-1\n\na\approx-3.45\ \vee\ a=\approx1.45$

I need help asap for this question

Answers

Answer:

1 5/6 is on the twelfth line/tick mark. 2 1/3 is on the 15 line/tick mark.

Step-by-step explanation:

Go to the 1 and count up five lines. (5/6) For the 2nd one convert the 1/3 into 6ths. You now have 2 2/6. go to the 2 and count up 2 lines.

Please Help!
$- (1)/(8) - (6 (7)/(8) )$

Answers

$= - (1)/(8) - (55)/(8)$

$= - (56)/(8)$

$= 7$

Is 6/11 greater than or less than or equal to 9/10

Answers

less just cross mutiply it helps me out alot to do that Update: sorry I did that wrong I think it is greater than actually

Normally to compare 2 fractions, I would say to find a common denominator so you can compare them directly, however on this problem we can just use a little common sense to figure it out...

Look at 6/11. 6 is approximately half of 11 so 6/11 is approximately 1/2. Now look at 9/10. If 10/10 is one whole, 9/10 is approximately 1.

So you can look and see that 6/11 < 9/10 because 1/2 < 1

Reduce 22/30 to lowest terms and write the denominator in the blank.

Answers

Answer:

11/15. the denominator is 15

Step-by-step explanation:

22/2=11

30/2=15

Hope this helps!

Answer:

Step-by-step explanation:11/15

Help please this needs to be done quickly

Answers

Answer:

there is no inequality

only size of the graph is different

Step-by-step explanation:

Answer:

x $\leq$ 2

Step-by-step explanation:

If the dot is closed, then you would use the "greater than or equal to" symbol. Next, you would use any letter you like as the variable and put it on the left side of the equation. Then, you need to find where the dot is (in this case 2) and put the 2 on the right side of the equation. And lastly, write it down, or type it down. There you go.

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I NEED HELP WITH 5 I WILL GIVE YOU BRANLIEST ASAP PLZ HELPPPPP

Gregory predicts that 310 people will attend the spring play. And there was an actual total of 220 people who attended the spring play. What is the percent error.