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
Reptile [31]
3 years ago
11

If an equation is an identity, then how many solutions does it have?

Mathematics
2 answers:
Musya8 [376]3 years ago
8 0
It has an infinite amount of solutions.
VashaNatasha [74]3 years ago
5 0
It would be Infinte or however its spelled lol . 
You might be interested in
Free points: this is because of all the kindness I have seen on brainly:
Y_Kistochka [10]

The answer to 5x5 is 25

6 0
3 years ago
Read 2 more answers
Find the sample size necessary in order to be 95% confident when determining the true mean weight within 2 units (EC2). Assume t
bogdanovich [222]

Answer:

(c) 43.

Step-by-step explanation:

Given:

Margin of error (E) = 2

Sample variance (s^{2}) = 44

Confidence level = 95%

The z- value at 95% confidence level is 1.96.

The sample using the provided information can be calculated as:

n=(\frac{z(s)}{E})^{2} \\n=\frac{z^{2} s^{2} }{E^{2} } \\n=\frac{1.96^{2} (44) }{2^{2} }\\n= 42.52\\n=43

Hence, the correct option is (c) 43.

8 0
3 years ago
The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?
Triss [41]

Answer:

x^2+ 18x -130=0

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

Area = Length * Width

So:

A_1 = (x + 6) * (3x - 2)

The smaller rectangle

A_2 = (x - 1) * (2x)

The difference between this areas give the area of the shaded region.

So:

A_1 - A_1 = 118

(x+6)*(3x-2) - (x-1)*2x = 118

Open brackets

3x^2 - 2x + 18x -12 -2x^2 +2x = 118

Collect like terms

3x^2 -2x^2- 2x +2x+ 18x -12   - 118=0

x^2+ 18x -130=0

<em>The above equation can be used to solve for x</em>

4 0
3 years ago
Suppose PR = 54, solve for QR<br> 4x-1<br> 3x-1<br> P<br> R
Svet_ta [14]

Answer:

QR = 23

Step-by-step explanation:

P, A, and R are collinear.

PR = 54

PQ = 4x - 1

QR = 3x - 1

To solve for the numerical length of PR, let's generate an equation to find the value of x.

According to the segment addition postulate:

PQ + QR = PR

(4x - 1) + (3x - 1) = 54 (substitution)

Solve for x

4x - 1 + 3x - 1 = 54

Combine like terms

4x + 3x - 1 - 1 = 54

7x - 2 = 54

Add 2 to both sides

7x - 2 + 2 = 54 + 2

7x = 56

Divide both sides by 7

\frac{7x}{7} = \frac{56}{7}

x = 8

QR = 3x - 1

Plug in the value of x into the equation

QR = 3(8) - 1 = 24 - 1

QR = 23

5 0
3 years ago
A rectangle has an area of 40 sq units , then length is 6 units greater than the width
devlian [24]

Answer:

A=L*W

Let w be width

L=(w+6)

40=(w+6)*w

40= w^{2} +6w

w^{2} +6w-40=0

w^{2}+10w-4w-40=0  

w(w+10)-4(w+10)=0

(w-4)(w+10)=0

w=4

Length= 10 units

Width=4 units

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • In a laboratory experiment a student obtained the following values for the mass density of a metal sample: 5.13 g/cc, 4.98 g/cc,
    13·1 answer
  • Log 6 (1/36) <br><br> 6 is the base. How to evaluate this?
    15·1 answer
  • The table shows how Levon spends his time at the gym. Over the course of a week, he wants to spend 600 minutes at the gym. How m
    9·1 answer
  • Hey <br> Please someone help me!!!!!<br> Asap
    5·1 answer
  • Give the equation of the line through the point (4, 5) with a slope of - 9/2
    12·2 answers
  • ASAP Show work!!<br><br> 3/7w - 11 = -4/7w
    8·1 answer
  • Help anyone can help me do this question,I will mark brainlest.​
    6·2 answers
  • Find the area of the parallelogram
    11·1 answer
  • Earned $5 per hour for h hours
    11·1 answer
  • Find the measure of each numbered angle !! (You don’t have to answer for all of them, I just need at least one )
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!