1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Savatey [412]
3 years ago
14

IMG_1444.PNG ( please answer these WITH YOUR WORK SHOWING!) it’s okay if you don’t know them all but please some of them answere

d would be appreciated!!!

Mathematics
1 answer:
Setler79 [48]3 years ago
3 0
#18)  (√2)/(2y)
#19)  7x/5
#20)  (2√5)/5
#21)  (3√5)/5
#22)  √5/b
#23)  (2√(2n))/n
#24)  (2√15)/15m

For #18:
\sqrt{\frac{18y}{36y^3}}=\sqrt{\frac{1}{2y^2}}=\frac{1}{y\sqrt{2}}\times\frac{\sqrt{2}}{\sqrt{2}}=\frac{\sqrt{2}}{2y}

#19:
\sqrt{\frac{49x^5}{25x^3}}=\sqrt{\frac{49x^2}{25}}=\frac{7x}{5}

#20:
\frac{\sqrt{12}}{\sqrt{15}}=\frac{2\sqrt{3}}{\sqrt{15}}\times \frac{\sqrt{15}}{\sqrt{15}}=\frac{2\sqrt{45}}{15}=\frac{6\sqrt{5}}{15}=\frac{2\sqrt{5}}{5}

#21:
\frac{\sqrt{72}}{\sqrt{40}}=\frac{6\sqrt{2}}{2\sqrt{10}}=\frac{3\sqrt{2}}{\sqrt{10}}\times \frac{\sqrt{10}}{\sqrt{10}}=\frac{3\sqrt{20}}{10}=\frac{6\sqrt{5}}{10}=\frac{3\sqrt{5}}{5}

#22:
\sqrt{\frac{25b}{5b^3}}=\sqrt{\frac{5}{b^2}}=\frac{\sqrt{5}}{b}

#23:
\sqrt{\frac{24}{3n}}=\sqrt{\frac{8}{n}}=\frac{2\sqrt{2}}{\sqrt{n}}\times \frac{\sqrt{n}}{\sqrt{n}}=\frac{2\sqrt{2n}}{n}

#24:
\sqrt{\frac{8}{30m^2}}=\sqrt{\frac{4}{15m^2}}=\frac{2}{m\sqrt{15}}\times \frac{\sqrt{15}}{\sqrt{15}}=\frac{2\sqrt{15}}{15m}
You might be interested in
If y=2 when x=3. What is the value of y when x=9?
elena55 [62]
Because x was *3 you had to y*3 which is 
y=6

8 0
2 years ago
Read 2 more answers
Old time savings bank pays 4% interest on its savings accounts. if you deposit $1,000 in the bank and leave it there: (do not ro
topjm [15]
A. $40, because you would do 1,000 × 1.04 = $1,040, and then subtract the original $1,000.
b. $81.60, because 1,000 × 1.04² = 1,081.6
c. $480.24, because 1,000 × 1.04^10 = 1,480.24.
I have used the formula for compound interest presuming you were aware of it, but I will be happy to explain what I did if you want :).
I hope this helps!
3 0
3 years ago
Read 2 more answers
What number is 28% of 25?
Anvisha [2.4K]

Answer:

7

Step-by-step explanation:

what number is 28% of 25

Is means equals and of means multiply

N = 28% of 25

Change to decimal form

N = .28* 25

N =7

7 0
3 years ago
Read 2 more answers
There are 25 students in a class. 20% of the the students are in a club. How many students are in a club?​
Stolb23 [73]

Answer:

5

Step-by-step explanation:

When taking a percent of a number, multiply the number by the percent divided by a hundred:

25 * \frac{20}{100}

You get an answer of

5

6 0
2 years ago
Read 2 more answers
Determine whether or not the vector field is conservative. if it is conservative, find a function f such that f = ∇f. (if the ve
Akimi4 [234]
A three-dimensional vector field is conservative if it is also irrotational, i.e. its curl is \mathbf 0. We have

\nabla\times\mathbf f(x,y,z)=-2e^{-x}\,\mathbf k

so this vector field is not conservative.

- - -

Another way of determining the same result: We want to find a scalar function f(x,y,z) such that its gradient is equal to the given vector field, \mathbf f(x,y,z):

\nabla f(x,y,z)=\mathbf f(x,y,z)

For this to happen, we need to satisfy

\begin{cases}f_x=ye^{-x}\\f_y=e^{-x}\\f_z=2z\end{cases}

From the first equation, integrating with respect to x yields

f_x=ye^{-x}\implies f(x,y,z)=-ye^{-x}+g(y,z)

Note that g *must* be a function of y,z only.

Now differentiate with respect to y and we have

f_y=-e^{-x}+g_y=e^{-x}\implies g_y=2e^{-x}\implies g(y,z)=2ye^{-x}+\cdots

but this contradicts the assumption that g(y,z) is independent of x. So, the scalar potential function does not exist, and therefore the vector field is not conservative.
8 0
2 years ago
Other questions:
  • I need help on all the parts
    9·1 answer
  • What is 5 divided by 535 long divison
    5·1 answer
  • Use the Distributive Property to multiply 9 and 37 in your head. After 37 is in expanded form, multiply 9 by each addend. (9 × 3
    9·2 answers
  • Blue toy cars cost $1 each and red toy cars cost $1.50 each. Mark spent $10
    8·1 answer
  • Suppose you earn $7.25 per hour working part-time for a florist. Write and solve an inequality to find how many full hours you m
    11·2 answers
  • Which graph represents 4x + 7y < -21
    15·1 answer
  • 10 more than a number w is -2.6
    8·2 answers
  • Convert 192 ounces to pounds. Round to the nearest hundredth if necessary.<br> QUICK PLEASE
    8·2 answers
  • GUYS PLEASE 30 POINTS HEKP ME WHICH ONE??????
    8·1 answer
  • The students measured length during a science experiment,they got 12 cm.But the actual measurement was 14.25cm.what was the perc
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!