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
ANEK [815]
3 years ago
14

Which objects may have a mass greater than 300 grams

Mathematics
1 answer:
katrin2010 [14]3 years ago
4 0

Answer:

A block of wood

Step-by-step explanation:

if you use a triple beam balance and it is calibrated than you can weigh it until it center out and you will get 300 grams.

You might be interested in
Solve the equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are locat
eimsori [14]

Answer:

There are NO real roots for this equation. The only roots have imaginary parts and therefore cannot be represented on the real x-axis.

Step-by-step explanation:

We notice that the expression on the left of the equation is a quadratic with leading term 2x^2, which means that its graph is that of a parabola with branches going up.

Therefore, there can be three different situations:

1) if its vertex is ON the x axis, there would be one unique real solution (root) to the equation.

2) if its vertex is below the x-axis, the parabola's branches are forced to cross it at two locations, giving then two real solutions (roots) to the equation.

3) if its vertex is above the x-axis, it will have NO real solutions (roots) but only non-real ones.

So we proceed to examine the vertex's location, which is also a great way to decide on which set of points to use in order to plot its graph efficiently.

We recall that the x-position of the vertex for a quadratic function of the form  f(x)=ax^2+bx+c is given by the expression:

x_v=\frac{-b}{2a}

Since in our case a=2 and b=-3, we get that the x-position of the vertex is:

x_v=\frac{-b}{2a}\\x_v=\frac{-(-3)}{2(2)}\\x_v=\frac{3}{4}

Now we can find the y-value of the vertex by evaluating this quadratic expression for x = 3/4:

y_v=f(\frac{3}{4})=2( \frac{3}{4})^2-3(\frac{3}{4})+4\\f(\frac{3}{4})=2( \frac{9}{16})-\frac{9}{4}+4\\f(\frac{3}{4})=\frac{9}{8}-\frac{9}{4}+4\\f(\frac{3}{4})=\frac{9}{8}-\frac{18}{8}+\frac{32}{8}\\f(\frac{3}{4})=\frac{23}{8}

This is a positive value for y, therefore we are in the situation where there is NO x-axis crossing of the parabola's graph, and therefore no real roots.

We can though estimate a few more points of the parabola's graph in order to complete the graph as requested in the problem. For such we select a couple of x-values to the right of the vertex, and a couple to the right so we can draw the branches. For example: x = 1, and x = 2 to the right; and x = 0 and x = -1 to the left of the vertex:

f(-1) = 2(-1)^2-3(-1)+4= 2+3+4=9\\f(0)=2(0)^2-3(0)+4=0+0+4=4\\f(1)=2(1)^2-3(-1)+4=2-3+4=3\\f(2)=2(2)^2-3(2)+4=8-6+4=6

See the graph produced in the attached image.

4 0
2 years ago
If the correlation coefficient is 0.96, how confident can you be that your predicted value for the cost of a call at 70 minutes
Kitty [74]
Very confident because a correlation coefficient of 1 is perfect then a correlation coefficient of .96 means it is like 96% accurate
6 0
2 years ago
Read 2 more answers
If I start a road trip with 10,425 miles on my auto meter and I end it with 23,840 miles showing how many miles was my trip
denis23 [38]

Answer:

13,415 miles

Step-by-step explanation:

Final position - initial position = Miles traveled:

23,840 miles - 10,425 miles = 13,415 miles

3 0
3 years ago
The following numbers are gas prices from 12 local gas stations. If Pilot builds another local gas station, what would the gas p
TEA [102]

Answer:

1.24

Step-by-step explanation:

4 0
3 years ago
Write the equation of the line that has a slope of
faltersainse [42]
Y=3/5x+4

this can be solved using y=mx+b where m = slope and b = y intercept
5 0
3 years ago
Other questions:
  • One Endpoint is 9,18 and the midpoint is 14,16 what the other end point
    6·1 answer
  • Solve the system of equations 5x + y = 5 10x + 3y = 20
    14·2 answers
  • Daniella is solving 8/9 divided by 4. find her mistake and correct it.​
    6·1 answer
  • What is 5,340,000 in scientific notation?
    11·2 answers
  • if Santa increased his deliveries from 27 percent to 33 percent in 1999, and then to 39 percent in 2000, and this same pattern c
    11·1 answer
  • Leila's company makes solid metal balls for various industrial uses. A customer wants lead balls that have a diameter of 6 in. I
    7·1 answer
  • Which expression has a value of 22? A. 14 + 2 x 5. B. (14+2) x 5 C. 24 - 6÷ 3. D. (24 - 6) ÷ 3
    5·2 answers
  • 6. This box plot shows the number of minutes passengers spent in a station waiting room. What is the range of times spent in the
    8·1 answer
  • Write 7x7 in exponential form
    15·1 answer
  • Solve y <br> y=8x-x^2 <br> y=2x <br> STEP BY STEP SOLUTION PLEASE HELP
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!