MATHEMATICS MIDDLE SCHOOL

Identify which of these quadrilateral's are parallelograms.

Answers

Answer 1

Answer:

Answer:

Opposite Sides equal

Opposite sides parallel

Step-by-step explanation:

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Nira has $13.50. She receives a paycheck for $55. She spends $29.40. How muchmoney does she have now? SHOW YOUR WORK PLEASE!

Answers

13.50+55=68.568.50-29.40=39.10She now has $39.10

If she has $13.50 and she receives a paycheck for $55. so first u add 13.50 + 55 = 68.50. then she sends 29.40 so u minus 68.50 - 29.40 = 39.1. So Nira has $39.10 left.

What is m∠KNL? Enter your answer in the box. ° A horizontal line segment M K intersects with line segment J L at their midpoint N. The upward-left and downward-right angles formed by these lines are obtuse. The upward-left obtuse angle is labeled left parenthesis 5 x plus 2 right parenthesis degrees. The downward-right acute angle is labeled left square bracket 3 left parenthesis x plus 14 right parenthesis right square bracket degrees.

Answers

t N.

In the figure shown below

Answer:

A horizontal line segment M K intersects with line segment J L at their midpoint N.

∠J N M =(5x+2)°

∠ LN M=3( x+ 14)°

So, ∠J N M + ∠ LN M =180°[ These two angles form linear pair.Angles forming linear pair are supplementary.]

⇒5 x+ 2+ 3 (x+ 14) =180 [ By Substitution]

⇒ 5 x+2 +3 x+42°= 180°

⇒ 8 x=180°-44°

⇒8 x= 136°

⇒x= 136°÷8

⇒x=17°

So, ∠J N M =5×17 +2=87°

∠ LN M= 3×(17 +14)=3×31=93

∠J N M =∠K N L [Vertically opposite angles]

∠K N L=87°

Answer:

The measure of $\angle KNL = 87\°$

Step-by-step explanation:

According to the below diagram, horizontal line segment $MK$ intersects with $JL$ at their midpoint $N$ .

So, $\angle JNM = \angle KNL$ (As they are vertical angles)

Given that, $\angle JNM = (5x+2)\°$ and $\angle MNL = [3(x+14)]\°$

As they are adjacent angles and points $J, N$ and $L$ are co-linear, so $\angle JNM +\angle MNL = 180\°$

That means.......

$(5x+2)+3(x+14)=180\n \n 5x+2+3x+42=180\n \n 8x+44=180\n \n 8x=180-44=136\n \n x=(136)/(8)=17$

Thus, $\angle KNL =\angle JNM= (5*17+2)\° = 87\°$

determine wheter 3x+12+x is equivalent to 4(3+x). use properties of operations to justify your answer. please help! answer only if you know!

Answers

3x + 12 + x = 4x + 12 becuase 3x and x are like terms so you can add them
4(3 + x) = 12 + 4x because 4 times 3 is 12 and 4 times x is 4x so you add them to get 12 + 4x which can be rearranged to equal 4x + 12
So in short: 3x + 12 +x is equivalent to 4(3+x)

Name all sets of numbers for 7.2

Answers

That's a verrrrrry interesting number !
It belongs to an infinite number of sets,
and I'm pretty busy right now.

Here are just a few of them:

-- real numbers
-- rational numbers
-- positive numbers
-- mixed numbers
-- multiples of 0.1
-- multiples of 0.2
-- multiples of 0.3
-- multiples of 0.4
-- multiples of 0.6
-- multiples of 0.8
-- multiples of 0.9
-- multiples of 1.2
-- numbers less than 7.21
-- numbers less than 7.22
-- numbers less than 7.23
.
.
etc.

-- numbers greater than 7.19
-- numbers greater than 7.18
-- numbers greater than 7.17
.
.
etc.

A triangle is shown. What is the length, in inches, of side a?

Answers

Using trigonometric ratios, the length in inches of the given triangle is 22 inches.

Given a right angled triangle.

The length of the hypotenuse is also given.

We can find the length of "a" using the sine trigonometric ratio.

We know that,

Sine of any angle is defined as the ratio of the opposite side to the hypotenuse of a right angled triangle.

Using the sine function here for the angle 30°,

sin (30°) = opposite side / adjacent side

sin (30°) = a / 44

Or,

a / 44 = sin (30°)

We know that sin (30°) = 1/2.

So,

a / 44 = 1/2

Multiplying both sides by 44, we get,

a = 44 / 2

a = 22 inches

Hence the length is 22 inches.

To learn more about Trigonometric Ratios, click on the linkhere :

brainly.com/question/29156330

#SPJ1

Answer:

Step-by-step explanation:

Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% more time doing homework this week. Is she correct? Show your work to justify your decision

Answers

The best way to solve this problem is to use the 'rule of three":

If 15% correspond to 100%

then 18% correspond to X%

We notice that both lines are in the following proportion:

(15) / (100%) = (18) / (X%)======> X%= (18 x 100%) / 15= 6/5 = 1.2 =120%

Answer:

Maxine is incorrect.

Step-by-step explanation:

18 - 15 = 3 3/15 = 0.2 0.2(100) = 20.

20% is the percent of increase. 120% would be the total of both combined. Since we are only looking for how much more, it would be 20%.

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