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
valentina_108 [34]
3 years ago
11

Solve the quadratic equation (2x+5)(2x-5)

Mathematics
1 answer:
mote1985 [20]3 years ago
4 0
If you want to multiply (2*x + 5) and (2*x - 5), you can do this using the following steps:

(2*x + 5) * (2*x - 5) = 4*x^2 - 10*x + 10*x - 25 = 4*x^2 - 25

The correct result is 4*x^2 - 25.
You might be interested in
A 35 pound dog eats an average of 2 1/2 cups of dry dog food a day. If you assume that there is a relationship between size and
zimovet [89]
70 / 35 = 2
So the 70 pound dog weights double the weight of the 35 pound dog, so he will eat twice as much.

2 x 2.5 = 5 cups

Meaning he will eat 5 cups of dry dog food a day.

By the same logic a 140 pound dog would have to eat twice what a 70 pound dog eats, that is 10 cups of dry dog food a day, so 7 1/2 cups are not enough.

Challenge: per pound a dog eats more than a cat. Since you know a 140 pound dog eats 10 cups, you can dive 140 by 10, to find out that each cup feeds 14 pounds, so half a cup would be the amount of food to feed a 7 pound dog, meaning that a dog weighing 1 pound less than a 8 pound cat would need the same amount of food, so it eats more than a cat.

8 0
3 years ago
Hailey paid $13 for 1 3/7 kg of sliced salami. What was the cost per kilogram of salami?
TEA [102]
$9.10 per kilogram of salami
7 0
3 years ago
Read 2 more answers
Please help now ASAP!!!!
TiliK225 [7]

Answer:

Step-by-step explanation:

I don't think u can tell from that because u need the length of each movie

6 0
2 years ago
Help please................
Alona [7]
Hey you're using Apex xD

Answer is D. 

Here's an example 

6= 3x2
Just divide. 6/2 = 3 <span />
8 0
3 years ago
F(x) = 5.22 – 3 on 2, 2+h]
Vika [28.1K]

Answer:

Step-by-step explanation:Wait im confused.

4 0
3 years ago
Other questions:
  • How far is the robot claw from winter lane
    11·2 answers
  • How do I divide 49 by 14
    11·2 answers
  • URGENT: I need to know the answer to this equation and the step by steps:
    10·1 answer
  • What is the limit as X is approaching 1?
    5·1 answer
  • How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16%
    12·2 answers
  • A random sample of 300 circuits generated 13 defectives. Use the data to test the hypothesis Upper H Subscript 0 Baseline colon
    8·1 answer
  • Jason's business computers need servicing. The expression 81x + 108 represents a contractor's total charges in dollars for fixin
    13·1 answer
  • Can two triangles be non congruent but have one pair of congruent sides and two pairs of congruent angles? Explain.
    10·1 answer
  • Twice one number added to another umber is 18. If the second number is equal o 12 less than 4 times the first number, find the t
    12·1 answer
  • Donna is making a cookie recipe that calls for 1 ¾ cups of sugar. However, when she goes to take out the measuring cups she can
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!