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
Anna71 [15]
3 years ago
8

4b^2 +8b + 7 = 4show your work I already have the answer!!

Mathematics
2 answers:
Gemiola [76]3 years ago
8 0

Answer:

(-.5,0) and (-1.5,0)

or b= -.5

and b= -1.5

Step-by-step explanation:

First we want one side of the equation to equal 0

we have

4b²+8b+3=0

using the quadratic formula we have

(-b±√(b²-4*a*c))/2a

(-8±√(8²-4*4*3))/2*4

(-8±√(16))/8

(-8±4)/8

now we evaulate when ± is addition

(-8+4)/8

-4/8

-.5

and evaulate once more when the ± is subtraction

(-8-4)/8

-12/8

-1.5

Therefore the two solutions are (-.5,0) and (-1.5,0)

Furkat [3]3 years ago
8 0

Answer:

Step-by-step explanation:

step one - Move terms to the left side

(4b^2 + 8b + 7 = 4)

(4b^2 + 8b + 7 - 4 = 0)

step dose - Subtract the numbers

(4b^2 + 8b + 3 = 0)

step три - Use the sum-product pattern

(4b^2 + 6b + 2b + 3 = 0)

You might be interested in
Homework Worksheet: 3.2 Day 1 - Slope
madreJ [45]

Answer:

1) zero

2) undefined

3) negative

4) positive

5) negative y= -30x+342

hope this helps;)

7 0
3 years ago
The distance by rail from Leicester to Londonis 100 miles.
Zarrin [17]

The arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

To calculate the arrival time in london of a train that leaves Leicester to london at 11:50 A.M, use use the formula below.

Formula:

  • Ta = [(d/s)+11:50]....... Equation 1

Where:

  • Ta = Arrival time
  • d = distance from Leicester to London
  • s = Speed

From the question,

Given:

  • d = 100 miles
  • s = 80 mph

Substitute these values into equation 1

  • Ta = [(100/80)+11:50]
  • Ta = 1.25h+11:50
  • Ta = 1 hours 15 minutes +11:50
  • Ta = 13:05 pm

Hence, the arrival time in london of a train that leaves Leicester to london at 11:50 A.M is 13:05 pm.

Learn more about time here: brainly.com/question/4931057

5 0
2 years ago
Suppose SAT Writing scores are normally distributed with a mean of 498 and a standard deviation of 108. A university plans to aw
Katen [24]

Answer: 687

Step-by-step explanation:

normally distributed

μ = 498

σ = 108

Top 4%

P(X > a) = 0.04

P(Z > a-498/108) = 0.04

Using the table attached, for the top 4%:

0.50 - 0.04 = 0.46

a-498/108 = 1.75

a-498 = 189

a = 687

The minimum score for the scholarship is 687.

5 0
4 years ago
The rate of inflation is 3%. The cost of an item in future years can be found by iterating the function c(x) = 1.03x. Find the c
Illusion [34]
This is an expontential growth, which is a growth based on f(x) = b*a^x 
b = 1500
a = 1.03
x = 3

f(3)=1500*1.03^3 = 1639.10$

After three years the fridge would cost 1639.1$.
8 0
3 years ago
Wright a variable expression for the word phrase " the quotient of eight and a number. " A: 8 - z B: 8z C: 8÷ z D:8 + z
abruzzese [7]
Quotient is the result of a division.
The quotient of 8 and a number is the division of 8 and a number.

8/z

Answer is C.
4 0
3 years ago
Other questions:
  • How many sixes are there in sixty six
    7·2 answers
  • If 5 freinds share 3 oranges how much will each friend get
    10·2 answers
  • What is the length of the line segment with endpoints (11, −4) and (−12, −4
    7·2 answers
  • A translation is a type of transformation in which a figure is<br> flipped<br> slid<br> turned
    9·1 answer
  • X/10=7 what does x equal?
    9·2 answers
  • Chuck lives of a mile from the post office. He walked of the way from home to the post office. How far did Chuck walk? If possib
    11·1 answer
  • Write the standard form of the equation of the line described.
    9·1 answer
  • X + y ≥ 3 <br> 5x + 2y &lt; 10
    5·1 answer
  • 20 oz. of taco meat is $5.36 find the unit price
    8·2 answers
  • Omar is preparing the soil in his garden for planting squash.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!