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3 years ago

Help please help super hard!!!

Mathematics

2 answers:

Andrews [41]3 years ago

6 0

Answer:

Step-by-step explanation:

7 > x/4

7(4)>4(4)

28> x

WITCHER [35]3 years ago

3 0

7 > x/4

Step 1) we multiply each side by 4

7 times 4, 4 times x/4

28> x

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For his long distance phone service, Manuel pays a $2 monthly fee plus 12 cents per minute. Last month, Manuel's long distance b

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126 minutes

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2 years ago

Let each Square represent 1/3 unit by 1/3 unit.

Varvara68 [4.7K]

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3 years ago

Suppose u and v are functions of x that are differentiable at x=0 and that u(0)=3, u'(0)= -4, v(0)= 2, v'(0)= -7. Find the value

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$\bf \cfrac{d}{dx}[u(x)\cdot v(x)]\implies \cfrac{du}{dx}\cdot v(x)+u(x)\cdot \cfrac{dv}{dx}\quad 
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so.. hmm pretty sure you know what that is

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3 years ago

Read 2 more answers

Otto invests $1,000 at age 20. Otto wants theinvestment to be worth $4,000 by age 30. Ifinterest is compounded continuously, wha

AveGali [126]

$r\approx0.139$

1) Since this is a Continuously Compounded operation in a 10 yrs period, then we can write out the following equation:

$\begin{gathered} A=Pe^{rt} \\ \end{gathered}$

2) Plugging into the equation the given data and since Otto is 20 yrs old and he plans to get $4,000 in ten years, we can write out:

$\begin{gathered} 4000=1000e^{\mleft\{10r\mright\}} \\ \frac{4000}{1000}=\frac{1000e^{10r}}{1000} \\ 4=e^{10r} \\ \ln (4)=\ln (e)^{10r} \\ 10r=\ln (4) \\ r=\frac{\ln (4)}{10} \\ r=0.1386 \end{gathered}$

3) Thus the rate Otto needs is

$r=0.1386\approx0.139$

Note that since the 0.1386 the six here is greater than 5 then we can round up to the next thousandth, in this case: 0.139. For the 0.1386 is closer to 0.139 (0.004) than to 0.138 (0.006).

Or 13.9%

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8 months ago

What is the value of 3x^2 + 5x + 25, when x = 3<br> (3x^2 means 3x squared)

pentagon [3]

I got 67 but I can guarantee it’s right

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2 years ago