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
Nonamiya [84]
2 years ago
14

Use benchmarks to estimate 2.81+3.73

Mathematics
1 answer:
love history [14]2 years ago
5 0
The benchmarks are:  0,  0.25,  0.50,  0.75  and 1.
   2. 81   →  2.75
+
   3.73    →  3.75
------------
2.75 + 3.75 =  6.50
You might be interested in
Find the result when 7x + 12 is subtracted from 11x – 10.<br> -<br> We have to use distributing
Sveta_85 [38]

Answer:

-4x+2

Step-by-step explanation:

STEP 1: Subtract 11x from 7x.

STEP 2: Subtract 10 from 12.

8 0
2 years ago
Read 2 more answers
Will Mark as Brainliest?
GaryK [48]

Answer:

Step-by-step explanation:

a.

slope=-1/2

b.

eq. of line is

y-0=(-2-0)/(0-(-2)(x-(-2))

y=-2/2  (x+2)

or y=-x-2

5 0
3 years ago
The probability distribution for a random variable x is given in the table. -5 -3 -2 0 2 3 Probability .17 .13 33 16 11 10 Find
IgorLugansk [536]

Answer:

0.79

Step-by-step explanation:

add up the probability that is less than or equal to  0, which is 0.17+0.13+0.33+0.16 = 0.79

5 0
2 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
irga5000 [103]

Answer:

The rocket hits the ground at a time of 11.59 seconds.

Step-by-step explanation:

The height of the rocket, after x seconds, is given by the following equation:

y = -16x^2 + 177x + 98

It hits the ground when y = 0, so we have to find x for which y = 0, which is a quadratic equation.

Finding the roots of a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}

x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}

\bigtriangleup = b^{2} - 4ac

In this question:

y = -16x^2 + 177x + 98

-16x^2 + 177x + 98 = 0

So

a = -16, b = 177, c = 98

\bigtriangleup = 177^{2} - 4(-16)(98) = 37601

x_{1} = \frac{-177 + \sqrt{37601}}{2*(-16)} = -0.53

x_{2} = \frac{-177 - \sqrt{37601}}{2*(-16)} = 11.59

Since time is a positive measure, the rocket hits the ground at a time of 11.59 seconds.

4 0
3 years ago
Michael has finished 25% of an art project that has taken him a total of 4 hours so far. If he continues to work at the same rat
guapka [62]
It will take him 16 hours because 25 is 1/4 of 100% so 4 times 4 is 16. So 16 is your answer :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • &lt;a and &lt;b are complementary angles. &lt;a measures 22<br>What is the measure of &lt;b?​
    9·1 answer
  • In Jaden’s yard, there is a triangular garden patch. He wants to plant a geranium in the patch at a point equidistant from all i
    7·1 answer
  • Show that if A is​ invertible, then det Upper A Superscript negative 1det A−1equals=StartFraction 1 Over det Upper A EndFraction
    9·1 answer
  • 4 minute mile whats the average speed mi/min
    5·2 answers
  • While driving your rental car on your trip to Europe, you find that you are getting 12.4 kilometers per liter of gasoline. What
    15·1 answer
  • I need help for this problem
    9·1 answer
  • One ball is to be selected from a box containing red, white, blue, yellow, and green balls. If the probability that the selected
    9·1 answer
  • Show that the rational numbers -15/35 and 4/(-6) are not equal?
    15·1 answer
  • What is the scale factor of the dilation shown?
    5·1 answer
  • 10. MP Persevere with Problems A survey found that
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!