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sdas [7]
3 years ago
9

Anyone have a link to a good 8th grade study guide for math?

Mathematics
1 answer:
Delvig [45]3 years ago
5 0

Answer:

https://newpathworksheets.com/math/grade-8

Step-by-step explanation:

You might be interested in
You want to buy some beans. Upper A 7​-ounce package costs ​$2.52. A 15​-ounce package costs ​$5.55. An 18​-ounce package costs
maxonik [38]

Answer:

The last package having 18 ounce beans in $6.30 is best to buy.

Step-by-step explanation:

Given that:

A 7​-ounce package costs ​$2.52

for 1 ounce it will cost = $2.52/7

1 ounce will cost = $0.36

A 15​-ounce package costs ​$5.55

for 1 ounce it will cost = $5.55/15

1 ounce will cost = $0.37

An 18​-ounce package costs ​$6.30.

for 1 ounce it will cost = $6.30/18

1 ounce will cost = $0.35

So the last package having 18 ounce beans in $6.30 is best to buy.

i hope it will help you!

8 0
3 years ago
Determine which values of p the following integrals converge. Give your answer in each case by selecting the appropriate inequal
sashaice [31]

Answer:

Step-by-step explanation:

a)

\int\limits^2_1 {\frac{1}{x(lnx)^p} } \, dx

this can be done by substitute lnx = u

dx/x = du

When x =1, u =0 and when x =2, u = ln 2

So integral = \int\limits^{ln2} _0 {du/u^p} \\\=\frac{u^{-p+1} }{-p+1}

We find that this integral value is not definid for p =1

Hence for values of p other than 1, this converges.

When we substitute limits

\frac{1}{1-p} ((ln2)^{1-p} -1)

and converges for p ≠1

b) \int\limits^1_0 {lnx}/x^p \, dx \\\int \frac{\ln \left(x\right)}{x^p}dx=\frac{1}{-p+1}x^{-p+1}\ln \left(x\right)-\frac{x^{-p+1}}{\left(-p+1\right)^2}+C

So not converging for p =1

But ln x is defined only for x >0

So integral 0 to 1 makes this integral not valid and hence not convergent.

7 0
3 years ago
2. SALES TAX Olivia purchases a DVD movie priced
Nataly_w [17]

Answer:

$23.42

Step-by-step explanation:

  • To find the sales tax, you need to 6.5% of $21.99
  • To do this you have to times need to turn 6.5% into a decimal, which is 0.065 (i moved decimal point 2 numbers to the left)
  • then you do 0.065 × 21.99 which equals 1.42935
  • now you have to add 21.99 with 1.42935 = 23.41935
  • because of the context of the question, you need the answer needs to be rounded up to the nearest hundredth.
  • making the answer $23.42 total
8 0
3 years ago
Help me with writing this exression please
k0ka [10]

Answer:

3 * n^(1/6)

Step-by-step explanation:

The square root can be written as ^ 1/2

The cube root can be written as ^ 1/3

So the sixth root can be written as ^ 1/6

3 * n^(1/6)

5 0
3 years ago
Johan can drive 270 miles on 9 gallons of gas. What is his average mileage?
VladimirAG [237]

Hey there!

The correct answer is 30 miles per gallon.

If he can drive 270 miles on 9 gallons, we want to find the unit rate, or miles per gallon. We can do this by dividing 270 by 9. To make it easier, we will take off the zero, and do 27/9, which is 3. Now we add the 0 back on, which gives us 30. Therefore, his average mileage is 30 miles per gallon.

Have a terrificly amazing day! :D

4 0
3 years ago
Read 2 more answers
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