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
quester [9]
3 years ago
13

How do you evaluate the expression-4ac for the following conditions:

Mathematics
2 answers:
Goryan [66]3 years ago
8 0
(a) = 24
(b) = -32
(c) = 20


To evaluate the expression, take what a and c equal and substitute the numbers into the equation and solve.
Aleonysh [2.5K]3 years ago
4 0
A. -4ac
   
    -4(2)(-3)
    multiply
 
    -4(-6)
    multiply, again

    24

b. -4ac

   -4(-4)(-2)
   multiply

   -4(8)
   multiply, again

   -32

c. -4ac

    -4(-1)(5)
    multiply
 
    -4(-5)
    multiply, again

     20
You might be interested in
What is the area of the rhombus shown below? AC=17 BD=15 AB=11.2 Answers: A. 255 square units B. 190.4 square units C. 16 square
Lena [83]

Answer:

D. 127.5 square units

Step-by-step explanation:

AC=17

BD=15

AB=11.5

Diagonal (1&2) are given, base of the rhombus is also given.

Height is not given

Area of a rhombus given the diagonals

=1/2×d1×d2

Where,

d1=AC=17

d2=BD=15

Area of a rhombus=1/2×d1×d2

=1/2×17*15

=1/2×255

=127.5

D. 127.5 square units

4 0
3 years ago
HELP ME!!! What are the three different ways you can write a ratio?
kakasveta [241]

Answer:

A fraction, colon, words

3 0
3 years ago
A researcher asks students to rate their feeling toward an increase in tuition on a seven-point scale ranging from "opposed" to
ElenaW [278]

Answer: B

Step-by-step explanation:

In statistical terms ,ordinal scale contains things that you can place in order.

For example, hottest to coldest, lightest to heaviest, richest to poorest. Basically, if you can rank data by 1st, 2nd, 3rd place (and so on), then you have data that’s on an ordinal scale.

7 0
3 years ago
Ginny is studying a population of frogs. She determines that the population is decreasing at an average rate of 3% per year. Whe
svp [43]

Answer:

Step-by-step explanation:

This is exponential, of the form

y=a(b)^x where a is the initial amount and b is the growth/decay rate. If Ginny begins the study with 1200 frogs in the population, our a value is 1200.

If the population is decreasing 3% per year, it is decreasing 100% - 3% = 97% which, as a decimal, is .97. Our exponential function, then, is

y=1200(.97)^x

6 0
3 years ago
Zach read a book for 10 minutes every weekend in the first month, 20 minutes in the second month, 40 minutes in the third month,
san4es73 [151]
Victoria's method is linear because the number of minutes increase by an equal number (15) every month.

Workings in the attachments below. The green line is the function that has been set up for Victoria. The lines that form a curved looking graph belong to the function that was set up for Zach.

8 0
3 years ago
Other questions:
  • Your city has a hospital that is alternate exterior to the school
    14·2 answers
  • What are the Terms of 7x+4y+3y+7
    11·2 answers
  • Use the number line below to find a fraction that is equivalent to 1/2
    12·2 answers
  • Which company has the highest charge per attendee?
    6·1 answer
  • Enter a rational number that is equivalent to -24/4
    15·2 answers
  • What is the inverse of the function f(x) = x +3?
    8·1 answer
  • In the diagram below, BD AE, BF bisects ZABD, mC = 88° and
    14·1 answer
  • You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con
    10·1 answer
  • On Tuesday Katie ran a mile in 8.34 minutes she ran another mile in 7.89 minutes on Wednesday what was the total time for both m
    12·1 answer
  • Let f(x)=3x+1 and g(x)=x^2+xAfter simplifying (fg)(x)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!