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Tasya [4]
3 years ago
9

If the sin 90 = 1 then which statement is true

Mathematics
1 answer:
SVEN [57.7K]3 years ago
8 0

Answer:

sin90°=1 is true

it means this statement is true

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Select the inequality that corresponds to the figure
Gnoma [55]

Answer:

Although the Line is included in the region, I will say the your answer is B and D

Step-by-step explanation:

The region shaded is below the Line graph, son we have a < sign, now, I can see the region including the Line graph, so I will say that the inequality should have the = sign, nevertheless no options include the =sign, so, if it is nothing missing, your answer should be:

y<x

3 0
3 years ago
Help me solve this problem please
Mashutka [201]

Answer:

y = -2x + 17

Step-by-step explanation:

y has to equal 5:

incorrect

y = -2x - 17

y = -2(6) - 17

y = -12 - 17

y = -29

incorrect

y = -2x - 16

y = -2(6) - 16

y = -12 - 16

y = -28

incorrect

y = -2x + 16

y = -2(6) + 16

y = -12 + 16

y = 4

correct

y = -2x + 17

y = -2(6) + 17

y = -12 + 17

y = 5

8 0
4 years ago
Really important, this is a quiz grade. Please provide steps. :D. Will mark Brainliest
viva [34]

Karen has $30, Rafael has $75 and Shen has $25.

Step-by-step explanation:

Given,

Total amount they have = $130

Let,

Amount of Karen = x

Amount of Rafael = y

Amount of Shen = z

According to given statement;

x+y+z=130    Eqn 1

Shen has $5 less than what Karen have.

z = x-5     Eqn 2

Rafael has 3 times what Shen has;

y = 3z     Eqn 3

Putting value of z from Eqn 2 in Eqn 3

y=3(x-5)\\y=3x-15\ \ \ \ Eqn\ 4

Putting value of y and z from Eqn 4 and 2 in Eqn 1

x+(3x-15)+(x-5)=130\\x+3x-15+x-5=130\\5x-20=130\\5x=130+20\\5x=150

Dividing both sides by 5

\frac{5x}{5}=\frac{150}{5}\\x=30

Putting x = 30 in Eqn 2

z=30-5\\z=25

Putting z=25 in Eqn 3

y=3(25)\\y=75

Karen has $30, Rafael has $75 and Shen has $25.

Keywords: linear equations, substitution method

Learn more about linear equations at:

  • brainly.com/question/13063819
  • brainly.com/question/13219835

#LearnwithBrainly

8 0
3 years ago
3x square - 6x + 3=0
solmaris [256]

Answer: 1

Step-by-step explanation:

First you need to multiply 3 x 3 (9), because that's all 3 squared means.

Now the equation should be 9x-6x+3=0

Next we need to combine like terms. Do 9x - 6x which should give you 3x

Now your equations should be 3x+3=0

Now for the somewhat harder part...

Under the three (the one without the x) write -3 and under the zero write the same thing.  the +3-3 cancels out so just put a line or something across it.

0-3= -3

so now you should have...

3x=-3    ignore the 3x, at this point it's useless in getting the answer because it would cancel out.

-3 divided by -3  is 1 because a negative (-)  divided by a negative (-) equals a positive (+).

The answer should be  x = 1

8 0
3 years ago
Expansion of (3x-2)(2x^2+5)
timama [110]
6x^3 + 15x -4x^2-10



Yes
4 0
3 years ago
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