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
VikaD [51]
3 years ago
8

Hiii! can someone please help me with my maths question

Mathematics
1 answer:
beks73 [17]3 years ago
6 0

Step-by-step explanation:

a^2 + b^2 = c^2

(x+2)^2 + 4x^2 = (3x+4)^2

(x+2)(x+2)+ 4x^2= (3x+4)(3x+4)

x^2 + 2x + 2x + 4 + 4x^2 = 9x^2 + 12x + 12 x + 16

5x^2 + 4x + 4 = 9x^2 + 24x + 16

-4x^2 - 20x - 12 = 0

now we can use the quadratic formula

(-b±√(b²-4ac))/(2a)

I can't type all this so

.....

x = -0.697224362 or -4.302775638

AB can't be negative so it's the first one

so it's equals to 1.302775638

You might be interested in
What is 2^30 write using exponents explain ur reasonging
padilas [110]
2 to the 30 power is <span>1073741824</span>
5 0
3 years ago
A=b=c=0.8 Area (trigonometry)
attashe74 [19]

Answer:

Step-by-step explanation:

5 0
3 years ago
Which of the following describes the behavior of the graph shown over the interval (-2,2)?
sergejj [24]

Hello!

We are trying to describe the behavior of the graph given in the question.

To help us understand how to solve this question, we would need to understand <u>concavity.</u>

There are two types of concavity:

  • Concave <em>up</em>
  • Concave <em>down</em>

When a graph is concave up, the slope of the line would look like a "U".

When a graph is concave down, the slope of the line would look like a "U" that is flipped upside down.

In this case, we can see that the graph is concave down.

We can tell that the <em>slope</em> is negative due to the fact that the slope is going <u>down,</u> which results in the graph having a negative slope.

We can also tell that the graph is decreasing due to the fact that the line is doing downward.

Answer:

C). negative and decreasing

7 0
1 year ago
I really need help...Will mark brainiest
chubhunter [2.5K]

Answer:

x² + 18x +81

x² - 14x +49

4x²- 4x - 1

Step-by-step explanation:

multiply the x in the first parentheses by x and 9 in the other parentheses and

multiply the 9 in the first parentheses by x and 9 in the other parentheses and add all together

(x+9)(x+9)

x² + 9x + 9x + 81

x² + 18x +81

multiply the x in the first parentheses by x and -7 in the other parentheses and multiply the -7 in the first parentheses by x and -7 in the other parentheses and add all together

(x-7)(x-7)

x² -7x - 7x +49

x² - 14x +49

(2x-1)² is the same as (2x-1)(2x-1)

multiply the 2x in the first parentheses by 2x and -1 in the other parentheses and multiply the -1 in the first parentheses by 2x and -1 in the other parentheses and add all together

(2x-1)(2x-1)

4x²-2x-2x+1

4x²- 4x - 1

3 0
3 years ago
From a standard deck of cards, what is the probability that you choose a red card and then choose a 3 assuming you replaced the
Hunter-Best [27]
A standard deck of cards has 52 cards. Half of the deck has red cards and half has black cards. So the first probability would be 26/52, or 1/2 (simplified, it's half the deck).

Then you put the card back and choose a 3. There are 4 cards with the number 3 in the deck. So it's 4/52.

Then you multiply both the probabilities
26/52 x 4/52 = \frac{1}{2}  x  \frac{1}{13} = 1/26
3 0
2 years ago
Read 2 more answers
Other questions:
  • Convert 0.6 repeating into a fraction
    10·2 answers
  • Find the distance between the points ( - 16, - 9) and ( - 16, - 18).
    6·1 answer
  • Suppose you have data that shows that 12% of athletes test positive for steroids. You also know that 11% of athletes test positi
    13·2 answers
  • Rewrite the following equation in slope-intercept form.
    6·1 answer
  • Which cannot be represented by a linear
    8·1 answer
  • Answerrr please!!!!Quicklyyy
    6·2 answers
  • During the first race, 13 people ran a 1.5 mile race. During the second race, 5 people ran a 2.2 mile race. How many more total
    13·1 answer
  • 7th grade math please helpp i have alot of questions due in 10mins​
    10·1 answer
  • (6)
    5·1 answer
  • ILL GIVE BRAINIEST IF U GET IT RIGHT Sarah has red and blue modeling clay. When she found that of her modeling clay was red, she
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!