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
Minchanka [31]
3 years ago
14

Tina practiced piano for 15 hours last month and 45 hours this month. Use multiplication to write a statement comparing the hour

s Tina practiced during the two months.
Mathematics
2 answers:
KengaRu [80]3 years ago
8 0
15 x 3 = 45 so she did twice as many hours
Pani-rosa [81]3 years ago
6 0

Answer: Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3 =45 hours.


Step-by-step explanation:

Given : Duration of Tina practiced piano last month=  15 hours

Duration of Tina practiced piano this month=  45 hours

We can see 45 is a multiple of 15 such that 45=15\times3

Therefore, Hours by Tina practiced this month is 3 times the hours she practiced last month such that 15 x 3= 45 hours.

You might be interested in
If the shortest side in a 30° 60° and 90° triangle is a half an inch long find the length of the other two sides
disa [49]
30=1/2 inch
60=1/2x2=1 inch
90=1/2x3=1 1/2

shortest side is 1/2 inch, medium side is 1 inch, longest is 1 1/2
5 0
2 years ago
Write a linear equation in standard form that crosses (4, -3) and (-2, 9): 
kirill115 [55]
Slope =(9+3)/(-2-4) = 12/-6 = -2
Y+3 = -2 (×-4)  => y=-2×+5
D is the line asked
Slope: -1/3 
D: y-6 = -1/3 (×-3) or y= -1/3× + 7
8 0
3 years ago
Because of their connection with secant​ lines, tangents, and instantaneous​ rates, limits of the form ModifyingBelow lim With h
Gre4nikov [31]

Answer:

\dfrac{1}{2\sqrt{x}}

Step-by-step explanation:

f(x) = \sqrt{x} = x^{\frac{1}{2}}

f(x+h) = \sqrt{x+h} = (x+h)^{\frac{1}{2}}

We use binomial expansion for (x+h)^{\frac{1}{2}}

This can be rewritten as

[x(1+\dfrac{h}{x})]^{\frac{1}{2}}

x^{\frac{1}{2}}(1+\dfrac{h}{x})^{\frac{1}{2}}

From the expansion

(1+x)^n=1+nx+\dfrac{n(n-1)}{2!}+\ldots

Setting x=\dfrac{h}{x} and n=\frac{1}{2},

(1+\dfrac{h}{x})^{\frac{1}{2}}=1+(\dfrac{h}{x})(\dfrac{1}{2})+\dfrac{\frac{1}{2}(1-\frac{1}{2})}{2!}(\dfrac{h}{x})^2+\tldots

=1+\dfrac{h}{2x}-\dfrac{h^2}{8x^2}+\ldots

Multiplying by x^{\frac{1}{2}},

x^{\frac{1}{2}}(1+\dfrac{h}{x})^{\frac{1}{2}}=x^{\frac{1}{2}}+\dfrac{h}{2x^{\frac{1}{2}}}-\dfrac{h^2}{8x^{\frac{3}{2}}}+\ldots

x^{\frac{1}{2}}(1+\dfrac{h}{x})^{\frac{1}{2}}-x^{\frac{1}{2}}=\dfrac{h}{2x^{\frac{1}{2}}}-\dfrac{h^2}{8x^{\frac{3}{2}}}+\ldots

\dfrac{x^{\frac{1}{2}}(1+\dfrac{h}{x})^{\frac{1}{2}}-x^{\frac{1}{2}}}{h}=\dfrac{1}{2x^{\frac{1}{2}}}-\dfrac{h}{8x^{\frac{3}{2}}}+\ldots

The limit of this as h\to 0 is

\lim_{h\to0} \dfrac{f(x+h)-f(x)}{h}=\dfrac{1}{2x^{\frac{1}{2}}}=\dfrac{1}{2\sqrt{x}} (since all the other terms involve h and vanish to 0.)

8 0
3 years ago
The actual distance from Valparaiso, Indiana to Madison, Wisconsin is 145 miles. If the scale on the map is 1 in = 25 miles, how
lorasvet [3.4K]

Answer:

5.8

Step-by-step explanation:

145/25

5 0
3 years ago
According to the line of best fit, how many pints of raspberries would the grocery store be predicted to sell in a week when the
bagirrra123 [75]

Answer:

Lol hi amna! the answer i got for the hw is  223-32(4.50)=82

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Kim purchased 6 small containers of potato salad and Seth purchased 2 extra large containers of
    5·2 answers
  • Write x^3/2 in radical form
    13·1 answer
  • A spinner is divided into 4 equal sections. Which of the following are true?
    6·2 answers
  • The sum of c and 9 is equal to 16​
    9·2 answers
  • What is an word problem that matches the expression : 36 divided by 4?
    15·2 answers
  • HELP PLEASE!<br> for p(x)=-2x+5 determine:<br> p(5)<br> p(0)<br> p(-1/2)
    14·1 answer
  • X+3y=18 and x+2y=14<br><br><br> SHOW YOUR WORK!!!!!!!!!!!!!!!
    13·2 answers
  • Which of the following is a true biconditional statement?
    15·1 answer
  • Can someone please help me solve this. So confusing
    11·1 answer
  • Find the Surface Area of the prism please
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!