Helpppppppp meeeeeeeee

Mathematics

2 answers:

victus00 [196]3 years ago

7 0

Answer:

The answer is B.

Step-by-step explanation:

andrezito [222]3 years ago

3 0

Answer:

B. x < 7

Explanation:

1. Move constant (40) to right side and change its sign. -8x > -16 - 40

2. Caculate the difference. -8x > - 16 - 40= -8x > -56

3. Divide both sides by -8.

-8x ÷ 8 > -56 ÷ -8

4. Solution : x < 7

You might be interested in

67 and 113 that is multiple of 4,5 and 8

MA_775_DIABLO [31]

Answer:

No, 67 and 113 are not multiples of 4,5 and 8

Step-by-step explanation:

6 0

3 years ago

The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
y(t) = 100e^{-(\ln 2)t/30} = 100 \cdot 2^{-t/30}$

(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
$100 e^{- (\ln 2)t/30} = 1\ \implies\ -(\ln 2) t / 30 = \ln \frac{1}{100}\ \implies\ \\ \\
t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

3 0

3 years ago

The square root of 9x^4/36 simplified

Serggg [28]

Step-by-step explanation:

$\sqrt{ \frac{9 {x}^{4} }{36} } \\ \\ = \sqrt{ \frac{ {x}^{4} }{4} } \\ \\ = \frac{ {x}^{2} }{2}$