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
Tasya [4]
3 years ago
14

How do I solve for x?

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
6 0
So it states that the area of the rectangle is 56 cm, so all of it.
Given: 56 cm of rectangle
Unknown: find x
Length: 2 + x or x + 2
Width: 2x-5
Area = l * w
(x+2)(2x-5) 
set x equal to 0
x+2=0   --> x=-2                2x-5=0 --> 2x=5 --> x = 5/2
so the answer we got was x=-2,5/2
we know that x cannot be negative because you can't measure with negative numbers, therefore, 5/2 is your answer              
iragen [17]3 years ago
4 0
Length = a
width = b

ab = 56 ---- first equation
a = 2 + x ---- second equation
b = 2x - 5 ---- third equation

substitude second and third equation into the first equation

(2+x)(2x-5) = 56
4x - 10 + 2x^2 - 5x = 56
2x^2 - x - 10 - 56 = 0
2x^2 - x - 66 = 0
(x-6)(2x+11) = 0
x1 = 6 , x2 = - 11/2 ---> - 5.5 (nearest whole num)
You might be interested in
Brainliest!! What is the value of x?
Mice21 [21]

Answer

111

Step-by-step explanation:

900-789=111

3 0
3 years ago
Read 2 more answers
Ms. Bohannon has 45 students in her 6th grade class. There is a ratio of boys to girls is 5 to 6. Which number could be the numb
Schach [20]

Answer:

5 boys could be the Answer im pretty sure its the Anwser ?

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Suppose that each time Giannis Antetokounmpo shoots a free throw, he has a 3/4 probability of success. If Giannis shoots three f
GREYUIT [131]

Answer:

84.38% probability that he succeeds on at least two of them

Step-by-step explanation:

For each free throw, there are only two possible outcomes. Either Giannis makes it, or he does not. The free throws are independent. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

He has a 3/4 probability of success.

This means that p = \frac{3}{4} = 0.75

Giannis shoots three free throws

This means that n = 3

What is the probability that he succeeds on at least two of them

P(X \geq 2) = P(X = 2) + P(X = 3)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{3,2}.(0.75)^{2}.(0.25)^{1} = 0.4219

P(X = 3) = C_{3,3}.(0.75)^{3}.(0.25)^{0} = 0.4219

P(X \geq 2) = P(X = 2) + P(X = 3) = 0.4219 + 0.4219 = 0.8438

84.38% probability that he succeeds on at least two of them

6 0
2 years ago
38% of what is 152? Show work
marusya05 [52]
Take that certain number we are looking for as 'n'

38% ⇒ 0.38

0.38n = 152

Divide by 0.38

0.38n = 152
 /0.38      /0.38

n = 400

So 38% of 400 is 152.
3 0
3 years ago
Read 2 more answers
Pls help!!!
Effectus [21]
A is the correct choice
3 0
2 years ago
Other questions:
  • Helppppppppp plzzzzzzzzzzzzzzzzzzzz!
    15·1 answer
  • Sin A= 0.45 PLEASE HELP URGENT
    8·2 answers
  • What is 3 divided by 108. Show your work
    5·1 answer
  • Please answer quickly I will give who ever answer this 50 POINTS AND MARKED AS BRAINIEST Which equation shows the Negative One P
    15·1 answer
  • What is the percent of change from 240 to 480?
    12·1 answer
  • What volume of water at 4°c can be held in a cube whose edge is 3.0 cm long?
    8·1 answer
  • Find the area of parallelogram below 8 12
    10·2 answers
  • 5p + 9/2 + 2p+5/3 when p=5
    12·2 answers
  • What is the formula to find the volume of the solid ?
    8·1 answer
  • Is x + 3 a factor of the polynomial 2x^3 + 5x - 3?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!