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
gavmur [86]
3 years ago
11

The graph of y = 4x^2 - 4x - 1 is shown use the graph to find estimates for the solutions of a and b

Mathematics
1 answer:
8_murik_8 [283]3 years ago
5 0

Answer:

a) -0.25 and 1.25

b) -0.5 and 1.5

Step-by-step explanation:

a) For 4x^2-4x -1 = 0

What we have to do here is to simply find he points on the x-axis in which the graph crosses it

we have this as;

approximately-0.5 and 1.5

what we are saying is that the plot crosses the x-axis at x = -0.25 and x = 1.25

ii) what we have to do here is to find the point at which y = 2

After finding this point, we trace it to the plot sideways, before we trace to the x-axis

By tracing, we have the crossing on the x-axis at these points at -0.5 and 1.5

You might be interested in
How do I fine the sun and difference of number 16?
Lana71 [14]
Sum=add. difference=subtract (I'm just answering so you don't waste points)
4 0
3 years ago
Add 3 and 7. then multiply by 3.
Reil [10]

Answer:

30

Step-by-step explanation:

First, add 3 and 7

3 + 7 =10

The multiply by 3

10*3= 30

Hope this helps!

8 0
3 years ago
Read 2 more answers
. Compute the required sample size given the required confidence in the sample results is 99.74% (Z score of 3). The level of al
Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }

n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, Z_\frac{\alpha }{2} is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, Z_\frac{\alpha }{2} = 3. Hence:

n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900

6 0
3 years ago
Abby has a jewelry business. She uses small square boxes to ship her homemade rings to stores to sell. The ring box measures 12
aleksandr82 [10.1K]

Answer:

Volume of Shipping box= lenghth × breadth × height

Volume of ring box= side × side × side

Step-by-step explanation:

Volume of ring box = 12×12×12

=1728 units

Volume of shipping box= 1012×8×3

=24288 units

number of ring boxes in shipping box= 24288/1728

= 14.

Hope am correct

Thanks

3 0
3 years ago
Please help me after all of my questions are solved i will do a 100 points giveaway
Umnica [9.8K]

Answer:

A and B

Step-by-step explanation:

4(d-2)

4 times d is 4d

4 times -2 is -8

8 0
2 years ago
Read 2 more answers
Other questions:
  • The measure of MKJ is 80°. After analyzing the diagram, Janelle concludes that is an angle bisector.
    15·2 answers
  • What is the surface area of a sphere that has a radius of 5 units? Use 3.14 for π. A. 254 units2 B. 300 units2 C. 314 units2 D.
    8·2 answers
  • Write 0.5 as an integer
    15·1 answer
  • The squirrel could store 48 nuts per hour. Write the two rates (ratios) implied by this statement. How many nuts could the squir
    13·1 answer
  • If using the method of completing the square to solve the quadratic equation
    10·1 answer
  • $75 dress shirt, 20% discount , whats the sale price? round to the nwarest cent.
    14·1 answer
  • What is answer to 16=5x-9
    11·2 answers
  • Expre
    13·1 answer
  • URGENT HELP!!!!<br> Picture included
    5·1 answer
  • How many 1/9 servings are in 4 cups?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!