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2 years ago

Please help me on this will give you brainliest

Mathematics

2 answers:

siniylev [52]2 years ago

5 0

Option 1,2,3 are true hope it helps if not im sorry

aleksklad [387]2 years ago

5 0

Answer:

The answer is 1,2,3

Step-by-step explanation:

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Seven times the difference of x and 4 is -10

Delicious77 [7]

Answer:

7*(x-4)=-10

Step-by-step explanation:

4 0

2 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

6-3/4x+1/3=1/2 x+5 a.2 b.3 c.6 d.12

Gekata [30.6K]

6-3/4x+1/3=1/2x+5
6+1/3-5=1/2x+3/4x
4/3=5/4x
x=16/15

5 0

2 years ago

After a class party, Hugo had 3/5 of a bag of candy left

Ivahew [28]

Answer:

Each person will get 3/20 of the bag of candies

Step-by-step explanation:

3/5 divided by 4 = 3/5 * 1/4 = 3/20

Please mark as brainliest if the answer is correct!

Also, feel free to tell me if my answer is wrong, or you have more questions. :D

4 0

2 years ago

5. principal = $450 rate = 5% time = 4 years simple interest = _ compound interest =

tatiyna

Answer:

simple interest :90

Step-by-step explanation:

Step 1: Multiply 450 with the interest rate which is 0.05 so that equal 22.5

Step 2: Multiply the 22.5 with the 4 years

So Multiply principal with the interest rate with the time

MAYBE

4 0

3 years ago