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3 years ago

Someone Please help me with this question Ill give brainliest and 50 Points.

Mathematics

2 answers:

Ilia_Sergeevich [38]3 years ago

7 0

Answer:

3X+30 30/3=10 10X3=30 ALSO FOR X-5 x=10 so 10-5=5

Step-by-step explanation:

zzz [600]3 years ago

4 0

Answer:

im sorry, but you said 50 points?

Step-by-step explanation:

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Find all solutions of the equation in the interval [0, 2pi).

mina [271]

Answer:

x = 0 , π

Step-by-step explanation:

$-4 \sin x = 1 - cos^2 x$

Rewrite it by using the identity $\sin^2x + \cos^2x = 1$

$=> -4\sin x = \sin^2x$

Add 4sin x to both the sides.

$=> -4\sin x + 4\sin x = sin^2x + 4\sin x$

$=> \sin^2x + 4\sin x = 0$

Take sin x common from the expression in L.H.S.

$=> \sin x(\sin x + 4)=0$

Here , we can get two more equations to find x.

1) $\sin x(\sin x + 4)=0$

Divide both the sides by sin x

$=> \frac{\sin x(\sin x + 4)}{\sin x} = \frac{0}{\sin x}$

$=> \sin x + 4 = 0$

Substract 4 from both the sides.

$=> \sin x + 4 - 4 = 0 - 4$

$=> \sin x = -4$

$=> x = No \; Solution$

2) $\sin x(\sin x + 4)=0$

Divide both the sides by (sin x + 4)

$=> \frac{\sin x(\sin x + 4)}{\sin x + 4} = \frac{0}{\sin x + 4}$

$=> \sin x = 0$

$=> x = 0 \; , \pi$ over interval [0 , 2π).

5 0

3 years ago

Let f(x)=x2−6x−27 . Enter the x-intercepts of the quadratic function in the boxes. x = and x =

Akimi4 [234]

Answer:

-3, 9

Step-by-step explanation:

x^2 -6x - 27=

= x^2 - 9x + 3x - 27

= x(x - 9) + 3(x - 9)

= (x + 3)(x - 9)

x = -3, x = 9

8 0

4 years ago

Read 2 more answers

John can do 3 of every 5 things jack can do. The did a total of 72, how many did john do?

wariber [46]

John can do 43 things. The ratio is 3:5 and the rate is .6. .6*72 is 43.2 which I rounded to 43

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4 years ago

F(x) = -x² – 9x - 7 Find f(3)

NeX [460]

Answer:

f(3) = -43

Step-by-step explanation:

alright so all you have to do is substitute x with 3 so it gonna look like

-(3)^2-9(3)-7= f(x)

now you just have to solve

-9-27-7=f(x)

f(x)= -43

3 0

4 years ago

Rosita is playing a card game with some friends. The game starts by Rosita passing 7 cards to each player. If she passes out twe

NARA [144]

7p = 28....division property...divide both sides by 7
p = 28/7
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4 years ago