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2 years ago

Incorrect

Mathematics

2 answers:

AveGali [126]2 years ago

7 0

Sum of two adjacent angles in trapezium equals 180°

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And

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Valentin [98]2 years ago

5 0

Answer:

∠H = 137°

∠K = 76°

Step-by-step explanation:

The sum of the interior angles of a trapezoid = 360°

In a trapezoid, the angles on the same leg (called adjacent angles) are supplementary, meaning they add up to 180°

The legs are the non-parallel sides: JK and HI

Therefore, 104 + ∠K = 180

⇒ ∠K = 180 - 104 = 76°

And, ∠H + 43 = 180

⇒ ∠H = 180 - 43 = 137°

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Can someone please help me with this

Nesterboy [21]

Answer:

m∠Q = 121°

m∠R = 58°

m∠S = 123°

m∠T = 58°

Step-by-step explanation:

The sum of the interior angles of a quadrilateral = 360°

Create an expression for the sum of all the angles and equate it to 360, then solve for x:

∠Q + ∠T + ∠S + ∠R = 360

⇒ 2x + 5 + x + 2x + 7 + x = 360

⇒ 6x + 12 = 360

⇒ 6x = 360 - 12 = 348

⇒ x = 348 ÷ 6 = 58

So now we know that x = 58, we can calculate all the angles:

m∠Q = 2x + 5 = (2 x 58) + 5 = 121°

m∠R = x = 58°

m∠S = 2x + 7 = (2 x 58) + 7 = 123°

m∠T = x = 58°

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2 years ago

Jillian has $50 that she plans on investing in an account that will double her money every week. This can be represented by the

Arte-miy333 [17]

The part that would change would be the number 2. It would become a 3 instead of the 2. Tripling something means to have 3 groups of it.

The reason is that the $50 is not changing, nor would the number of weeks, x be changing.

4 0

3 years ago

Read 2 more answers

An airplane took 2 hours to fly 600 km against a head wind. The retrun trip with the wind took 1 and two thirds hours. Find the

Agata [3.3K]

Answer:

The speed of plane in still air is 330 kmph

Step-by-step explanation:

Given as :

The distance cover against the wind = 600 km

The time taken against the wind = 2 hours

The distance cover with the wind = 600 km

The time taken with the wind = ( 1 + $\frac{2}{3}$ ) hours

= $\frac{5}{3}$ hours

Let The speed against the wind = x - y kmph

The speed with the wind = x + y kmph

where x is the speed of plane in still air

And y is the speed of wind

So , Speed = $\dfrac{\texrm Distance}{\texrm Time}$

Or, x - y = $\frac{600}{2}$ = 300 ......A

And x + y = $\frac{600}{\frac{5}{3} }$

Or , x + y = 360 .......B

From eq A and B

( x + y ) - ( x - y ) = 360 - 300

Or, 2 y = 60

∴ y = $\frac{60}{2}$ = 30 kmph

And x = 360 - 30 = 330 kmph

Hence The speed of plane in still air is 330 kmph Answer

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3 years ago

These ratios are equivalent: 3 days to 4 hours, and 9 days to 12 hours. True or false?

garik1379 [7]

Answer:

True

Step-by-step explanation:

I'm positive the answer is true

Basically, i kept adding 3 more days/4 more hours to see if it would still line up.

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3 years ago

If the effective rate is 10% percent and the contract rate is 8% percent, the bond will sell at

Nina [5.8K]

Answer:it would be B HOPE THIS HELPS

Step-by-step explanation:

7 0

4 years ago

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