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
zlopas [31]
2 years ago
9

Determine the solutions of the equation:

Mathematics
1 answer:
jekas [21]2 years ago
3 0

The solutions of the equation are x = 15 and x = -20

<h3>How to determine the solutions of the equation?</h3>

The equation is given as:

the absolute value quantity two fifths times x plus 1 end quantity minus 7 equals 0

Rewrite the equation properly as:

|2/5x + 1| - 7 = 0

Add 7 to both sides

|2/5x + 1| = 7

Remove the absolute bracket

2/5x + 1 = 7 and 2/5x + 1 = -7

Subtract 1 from both sides

2/5x = 6  and 2/5x = -8

Solve for x

x = 15 and x = -20

Hence, the solutions of the equation are x = 15 and x = -20

Read more about absolute value at

brainly.com/question/1782403

#SPJ1

You might be interested in
Question is on picture
adoni [48]

Answer:

4 or 4/1 (both the same thing just with plotting point writing 4/1 is easier for me so I know to go up 4 over 1 :) )

Step-by-step explanation:

Parallel lines have the same slope, so both lines will have the same slope. Use line 1’s points to find the slope with the formula

(y1-y2)/(x1-x2)

(5-1)/(-2-(-3)

4/1=4

8 0
3 years ago
Read 2 more answers
The perimeter of a triangle is 44 inches. If
Sladkaya [172]
<h3>Answer:</h3>

The sides are  

6  inches,  8 inches and  10  inches

<h3> </h3><h3>Explanation: </h3>

I'd suggest that the question should read 'The perimeter of a triangle is 24 inches. The longest side is 4 inches longer than the shortest side, and the shortest side is three-fourths the length of the middle side. How do you find the length of each side of the triangle?'

Then the shortest side is  

6

and the longest side is  

10

<h2>I hope this helps  :)</h2>

5 0
3 years ago
The cedar trail is 2 7/8 miles long and the maple trail is 1 1/2 miles long how much longer is the cedar trail than the maple tr
S_A_V [24]

To find the difference in two lengths we need to subtract them

but here both length are given in mix fraction form

let us first try to write them in simple fraction form .

the first is : 2 7/8 we write it as : (8* 2 + 7 )/ 8 = 23/8

The second is : 1 1/2 we write it as : ( 2*1 + 1) /2 = 3/2

Let us now try finding difference : 23/8 - 3/2

as both have different number in the bottom we try to make a same number in denominator of both fractions .

2 can become by multiplying it to 4 .

let us multiply 3/2 by 4/4 it makes : ( 12 /8 )

now both fractions can be subtracted . (23/8 ) - ( 12/8 )

( 23 - 12 ) /8 = ( 11/8 )

that is the answer : 11/8 miles.

7 0
4 years ago
Test the hypothesis that the average content of containers of a particular lubricant is 10 liters if the contents of a random sa
RSB [31]

Answer:

We fail to reject the null hypothesis that the average content of containers of the lubricant is 10 liters, this at the significance level of 0.01

Step-by-step explanation:

Let X be the random variable that represents the content of a container of the lubricant. We have observed n = 10 values, \bar{x} = 10.06 and s = 0.2459. We assume that X is normally distributed.

We have the following null and alternative hypothesis

H_{0}: \mu = 10 vs H_{1}: \mu \neq 10 (two-tailed alternative)

We will use the test statistic  

T = \frac{\bar{X}-10}{S/\sqrt{10}} because we have a small sample size. And the observed value is

t = \frac{10.06-10}{0.2459/\sqrt{10}} = 0.7716

if H_{0} is true, then T has a t distribution with n-1 = 9 degrees of freedom.

The rejection region for a two-tailed alternative and a significance level of 0.01 is given by RR = {t | t < -3.2498 or t > 3.2498}, where 3.2498 is the value such that there is an area of 0.005 above this number and under the density of the t distribution with 9 df.

Because the observed value 0.7716 does not fall inside RR, we fail to reject the null hypothesis.

4 0
4 years ago
"to find x in part a, you would need" to solve the equation x 2 – 25 =0. wh
musickatia [10]
X2 - 25 = 0

Add 25 on each side.

x2 = 25

Divide by 2 on each side.

x = 12.5
3 0
3 years ago
Other questions:
  • Find the indicated term of the given geometric sequence, a1=18, r=2.1, n=12
    12·1 answer
  • Find f(-3) if f(x) = x 2.
    10·1 answer
  • What is the number between 3/25 and the square root of 14
    8·1 answer
  • if f(x) = √(x²-9) , then Domain of f = __________ (a) (-∞,-3)∪(3,∞) (b) (-∞,-3]∪ [3,∞) (c) (-∞,∞) (d) [-3,3]
    8·1 answer
  • TM= 3x + 5 MQ= x + 17 solve for x
    7·2 answers
  • Please help!!! 20 POINTS!!
    5·1 answer
  • How to find the x and y intercepts for linear equations
    12·1 answer
  • What is sin 0 if cos 0=12/13 and 0 is the quadrant IV
    8·1 answer
  • PLEASE HELP a great white shark loses an average of 2.7 teeth each year what is the change in the number of teeth a great white
    15·2 answers
  • Choose the student with the correct answer. Pls Help ;-;
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!