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
Nataliya [291]
3 years ago
15

Solve by the square root method 2(5x-7)^2-1=15

Mathematics
1 answer:
Ainat [17]3 years ago
8 0
X=11/5 x=2.2 is slicing for x
You might be interested in
Mateo compró un artefacto gastando los 3/7 de su dinero, quedándole 360 soles, ¿Cuál era el dinero que tenía Mateo al inicio?
Debora [2.8K]

Answer:

840 soles

Step-by-step explanation:

Sea la cantidad de dinero que Mateo tenía al principio = x

Mateo compró un artefacto gastando 3/7 de su dinero, dejándole 360 ​​soles,

Por eso,

3/7 × x = 360 soles

3x / 7 = 360 soles

Multiplicar cruzada

3x = 7 × 360 soles

x = 7 × 360 soles / 3

x = 840 soles

Por tanto, el dinero que tenía Mateo al principio es de 840 soles

5 0
3 years ago
What happens to the mean of the data set {2, 4, 5, 6, 8, 2, 5, 6} if the number 7 is added to the data set?
konstantin123 [22]

Answer:

It increases

Step-by-step explanation:

The mean of the given data set of 8 values is 4.75 (\frac{2+4+5+6+8+2+5+6}{8})

Adding 7 into the data set also increase the number of data points to 9, so the mean becomes:\frac{2+4+5+6+8+2+5+6+7}{9}, which is equal to 5

Hope this helps

7 0
3 years ago
Use the pythagorean theorem to prove that this point lies on the unit circle. Find csc(0) where 0=-120.
exis [7]

By applying Pythagorean theorem, we have proven that the point (-1/2, -√3/2) lies on the unit circle.

<h3>How to prove this point lies on the unit circle?</h3>

In Trigonometry, an angle with a magnitude of -120° is found in the third quarter and as such, both x and y would be negative. Also, we would calculate the reference angle for θ in third quarter as follows:

Reference angle = 180 - θ

Reference angle = 180 - 120

Reference angle = 60°.

For the coordinates, we have:

sin(-120) = -sin(60) = -1/2.

cos(-120) = -cos(60) = -√3/2.

By applying Pythagorean theorem, we have:

z² = x² + y²

z = √((-1/2)² + (-√3/2)²)

z = √(1/4 + 3/4)

z = √1

z = 1.

Read more on unit circle here: brainly.com/question/9797740

#SPJ1

4 0
2 years ago
The tuition at a certain college was $29,793 last year and increased 5.3% from last year to the current year. How much is this y
SCORPION-xisa [38]

Answer:

the answer is 67

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help please not sure of this one
shutvik [7]

Answer:

True, A

Step-by-step explanation:

If you sum two different sides of a traingle it must be greater than the remaining one

We can test that by adding the two smallest sides

1+8=9

9 is obviously greater than 8, so the answer is: true

8 0
3 years ago
Read 2 more answers
Other questions:
  • The quotient of twenty-four and a number is four
    5·1 answer
  • Find the general solution: y''-2y'-3y=-3te^(-t)
    12·1 answer
  • PLEASE HELP ME!!!!!!!!!!!
    6·1 answer
  • Please help me with the question below
    10·2 answers
  • How do you write 0.25% as a decimal?
    11·1 answer
  • Which values of k are solutions to the inequality StartAbsoluteValue negative k minus 2 EndAbsoluteValue less-than 18? Check all
    13·2 answers
  • Please answer the question correctly with factual information for brainliest.
    8·1 answer
  • Find the area of a circular pond having radius<br>Ans: 616 m<br>14 m.​
    6·1 answer
  • Can someone help me in the two questions
    14·1 answer
  • The perimeter p of the rectangle equals 30. Find the value of X?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!