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3 years ago

Need full answer explaining please

Mathematics

2 answers:

Lesechka [4]3 years ago

6 0

Angle y making a line with 80° and 60° it means their sum should be =180°
80°+60°+y=180°
y=40° so x=40° because they are vertical angels and vertical angels are equal

Gnesinka [82]3 years ago

5 0

A straight angle is equal to 180 degrees. 180-80=100. 100-60=40. so y=40. vertical angles are congruent so x=40 degrees.

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Please help and show work!!

serious [3.7K]

17.

x = -2 is not a solution of -1 < x < 5 because -2 < -1 (-1 < -2 < 5 FALSE).

18.

m = 5 is a solution of 5 ≤ m because 5 ≤ 5 ( 5 ≤ m → m ≥ 5 greater than 5 or equal 5, 5 is equal 5)

19.

k = 10 is not solution of 2k - 3 < 1 because:

put the value of k to the inequality:

2(10) - 3 < 1

20 - 3 < 1

17 < 1 FALSE

5 0

2 years ago

Simplify the expression:<br> x+2/ x^2 -4 - (x - 2)

bonufazy [111]

Answer:

2 ( 1 + x ) ( 1 − x ) over x ^2

Step-by-step explanation:

if you didn't get that its 2 ( 1 + x ) ( 1 − x ) as the numerator and x ^2 as the denominator

3 0

2 years ago

Read 2 more answers

Convert 12 minutes 35 seconds to seconds<br><br>:_

zalisa [80]

Answer:

755s

Step-by-step explanation:

60*12+35=755

This is the way

5 0

2 years ago

Read 2 more answers

The angle of depression from the top of a cruise ship to the top of a sailboat is 22. Sitting above water, the cruise ship is 23

dusya [7]

Answer:

The distance between the cruise ship and the sail boat is 517 feet.

Step-by-step explanation:

The cruise ship is 236 feet tall, and the sailboat is 236 tall; this means the distance between the top of the cruise ship and the top of the sail boat is

236 feet - 27 feet = 209 feet.

We also know that the angel of depression from the top of the cruise ship to the bottom of the cruise ship is 22°. This forms a right triangle as shown in the figure attached.

Now from trigonometry we get:

$tan \: \theta = \dfrac{209}{d}$

$d= \dfrac{209}{tan\:\theta }$

$\boxed{d=517ft}$

The distance between the cruise ship and the sailboat is 517 feet.

3 0

3 years ago

Clara found the product of 3 – 6y2 and y2 + 2. Her work is shown below. (3 – 6y2)(y2 + 2) = 3(y2) + (–6y2)(2) = 3y2 – 12y2 = –9y

vladimir2022 [97]

Answer:

No, She did not use the distributive property correctly.

Step-by-step explanation:

While multiplying $(3-6y^2)(y^2+2)$ , he did not use distributive property correctly. She only multiplied 3 with $y^2$ and not with 2. Also she multiplied $-6y^2$ only with 2 and not with $y^2$ .

6 0

2 years ago