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vredina [299]
3 years ago
11

Given: 2x - 1 = -9 Solve for x = ? A) -5 B) 5 C) -4​

Mathematics
2 answers:
ycow [4]3 years ago
6 0
The answer is C
-1 turns into +1 when you add to -9 which equals -8/2 = -4
RUDIKE [14]3 years ago
5 0

Answer: x=-4. So C

Step-by-step explanation:

2x-1=-9

add 1 on both sides

2x=-8

divide 2 on both sides to isolate the variable

x=-4

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From a well shuffled deck of 52 cards, the probability of NOT drawings a red-face card is ______.
Gnom [1K]

Answer:

Option "d" might be 11/13

Step-by-step explanation:

Red face cards=8. ( heart and Diamond)

Remove this 8 cards from 52 cards which gives

=>44

Toal cards =52

PROBABILITY = 44/52=>11/13

5 0
3 years ago
Danielle says the answer is "A". Is she correct? If she is,why? And if she isn't,what is the correct answer?​
Naddik [55]

Answer:

She is incorrect. The correct answer is 285.74

Step-by-step explanation:

A= (pi)r^2

Training wheel: A= (3.14)(3)^2=28.26in^2

Wheel: A= (3.14)(10)^2= 314in^2

314-28.26=285.74in^2

3 0
3 years ago
Solve the following equation for 0° ≤ θ < 360°. Use the "^" key on the keyboard to indicate an exponent. For example, sin2x w
never [62]

<u>Answer-</u>

\boxed{\boxed{x=90^{\circ},270^{\circ}}}

<u>Solution-</u>

The given equation-

\Rightarrow 2\sin^2 x-\cos^2 x-2=0

As

\sin^2 x+\cos^2 x=1\ \ \Rightarrow \cos^2 x=1-\sin^2 x

Putting this,

\Rightarrow 2\sin^2 x-(1-\sin^2 x)-2=0

\Rightarrow 2\sin^2 x-1+\sin^2 x-2=0

\Rightarrow 3\sin^2 x-3=0

\Rightarrow 3\sin^2 x=3

\Rightarrow \sin^2 x=1

\Rightarrow \sin x=\sqrt1

\Rightarrow \sin x=\pm 1

\Rightarrow \sin x=1,\ \sin x=-1

\Rightarrow x=\sin^{-1}(1),\ x=\sin^{-1}(-1)

\Rightarrow x=90^{\circ}+n360^{\circ},\ x=270^{\circ}+n360^{\circ}

Where n=0, 1, 2, ......

As given 0° ≤ x < 360°, so putting n = 0

\Rightarrow x=90^{\circ},\ x=270^{\circ}


3 0
4 years ago
Find the product of 14,560 x10
ad-work [718]
145600.. . .. ...........
3 0
3 years ago
Last question trigonometry question~!!
Serga [27]

f(g(x))  You plug in g(x) for x


f(x) = 2x + 3

f(g(x)) = 2(g(x)) + 3

f(g(x)) = 2(4x - 5) + 3

f(g(x)) = 8x - 10 + 3

f(g(x)) = 8x - 7


g(f(x))  You plug in f(x) for x


g(x) = 4x - 5

g(f(x)) = 4(f(x)) - 5

g(f(x)) = 4(2x + 3) - 5

g(f(x)) = 8x + 12 - 5

g(f(x)) = 8x + 7

5 0
4 years ago
Read 2 more answers
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