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
mojhsa [17]
3 years ago
13

The book fair is this week, and there's a special deal for teachers. For every 5 hardcover

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0

Answer:14

Step-by-step explanation:

You might be interested in
HELP ME IN CIVICS 80 POINTS Which of the following conclusions can be supported by the information in this chart?
marishachu [46]
Participation in elections increases as education level increases across all age groups. Education level was a significant factor in the outcome of the 2008 election. Decreasing the drop-out rate among high school students will positively affect voting rates. Increasing access to higher education will decrease citizens' participation in government.
7 0
3 years ago
A construction company transported 8 stones that weighed a total of 70.22 kilograms. How much did each stone weigh?
pishuonlain [190]

Answer:

8.7kilos

Step-by-step explanation:

70.22 divided by 8

hope this helps!

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
Use the discriminat to describe the roots of each equation. Then select the best description 16x^2+8x+1=0
astra-53 [7]

Answer:

A

Step-by-step explanation:

Discriminant= 8^2-4(16)(1)

=0

7 0
3 years ago
How do I solve N(1/5) = 2/15
dem82 [27]
N(1/5) = (2/15)
divide both sides by (1/5)
n = (2/15)/(1/5)
to divide fractions, cross multiply, e.g. (2*5)/(15*1) = 10/15
n = 10/15 = 2/3 or 0.666666.
8 0
3 years ago
Read 2 more answers
Other questions:
  • A manager states that his process is really working well. Out of 1,500 parts, 1,477 were produced free of a particular defect an
    13·2 answers
  • Which equation is an identity?
    14·2 answers
  • What is the median of the data?<br><br>what is the IQR?​
    10·2 answers
  • If sin θ = 1 over 4 and tan θ &gt; 0, what is the value of cos θ?
    15·1 answer
  • A circle has a diameter with endpoints at (10,8) and (5,-4) what is the circumference of the circle
    13·1 answer
  • Hello, im not sure where my teacher got 180 out of this scatter plot
    11·2 answers
  • I will give you brainlist!
    6·1 answer
  • Please help, brainliest, five star, thanks
    13·2 answers
  • PLS HELP! ITS FOR A TIMED QUIZ ON CONDITIONAL PROBABILITIES!!! 12 POINTS
    12·1 answer
  • Write an equation in slope intercept form for the line with slope 6 and y intercept -3
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!