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4 years ago

You buy a new laptop for $299 99. The sales tax is 6%. Whay is the total cost for the laptop including sales tax?You

Mathematics

2 answers:

Gnoma [55]4 years ago

8 0

299.99 + 299.99×0.06 = $317.99

ankoles [38]4 years ago

7 0

299.99x0.06=17.94
299.99 -17.94= $282.05

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What would be the first step to solve for n in the equation 3n-7=30?

taurus [48]

The first step would be to add 7 to both sides.
3n-7=30
add 7
3n=37
divide by 3
n=12.33

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3 years ago

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Let f(x) = x^2 + 2x and g(x)= 3 – x. Find f(-3) + g(-3).

Ksenya-84 [330]

Answer:

g(x)=6 and f(x)=3 these are your answers for this equation

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3 years ago

Harold earns $10.50 per hour working at a doctor’s office. On Monday he spent 1 5/12 hours filing paper work, 1 3/4 sending emai

maks197457 [2]

Answer:$57.75

Step-by-step explanation:

Find the total amount of hours he worked

$1\frac{5}{12} +1\frac{3}{4} +2\frac{1}{3}\\\\\frac{17}{12}+ \frac{7}{4} +\frac{7}{3} \\\\\frac{17+21+28}{12} \\\\\frac{66}{12}=\frac{66/2}{12/2}=\frac{33/3}{6/3}= \frac{11}{2} or 5\frac{1}{2} or 5.5h$

So, he worked 5.5h and he earns $10.50 an hour.

($10.50)(5.5h)=$57.75

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3 years ago

For the equation ae^ct=d, solve for the variable t in terms of a,c, and d. Express your answer in terms of the natural logarithm

saveliy_v [14]

We have been given an equation $ae^{ct}=d$ . We are asked to solve the equation for t.

First of all, we will divide both sides of equation by a.

$\frac{ae^{ct}}{a}=\frac{d}{a}$

$e^{ct}=\frac{d}{a}$

Now we will take natural log on both sides.

$\text{ln}(e^{ct})=\text{ln}(\frac{d}{a})$

Using natural log property $\text{ln}(a^b)=b\cdot \text{ln}(a)$ , we will get:

$ct\cdot \text{ln}(e)=\text{ln}(\frac{d}{a})$

We know that $\text{ln}(e)=1$ , so we will get:

$ct\cdot 1=\text{ln}(\frac{d}{a})$

$ct=\text{ln}(\frac{d}{a})$

Now we will divide both sides by c as:

$\frac{ct}{c}=\frac{\text{ln}(\frac{d}{a})}{c}$

$t=\frac{\text{ln}(\frac{d}{a})}{c}$

Therefore, our solution would be $t=\frac{\text{ln}(\frac{d}{a})}{c}$ .

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3 years ago

WILL GIVE BRAINLIEST..... NEED HELP FAST

Setler79 [48]

Answer:2516 pounds

Step-by-step explanation:

find the difference in gallons and the difference in the weights

46 - 14 = 32 gallons

2399 - 2191 = 208 pounds

so 32 gallons of gas weighs 208 pounds

find weight per pound: 208 pounds / 32 gallons = 6.5 pounds per gallon

round to 6.5 pounds per gallon

64 gallons - 46 gallons = 18 gallons

18 gallons x 6.5 pounds per gallon = 117 pounds

2399 + 117 = 2516 weight of plane with 64 gallons

6 0

4 years ago