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
mart [117]
3 years ago
10

If two is added to four times a certain number, the result is 26. What is the number?

Mathematics
2 answers:
olga2289 [7]3 years ago
6 0
The number is 8 because 4 times 8 equals 24 plus 2 is 26
Vitek1552 [10]3 years ago
6 0

For this sort of question you have to work backwards.

.

26 - 2 = 24.

24 / 4 = 6

.

The number would be 6

You might be interested in
Mega middle school had a valentine dance four fifths of the students plus 7 teachers were there if there was 495 people at the d
maria [59]
495-7=488
488/4=122
122*5=610

The answer is 610 students attend the school.
6 0
3 years ago
Suppose the Santa Monica has a hull length that is 10 ft shorter than that of the Nina Pinta. What expression represents the hul
astraxan [27]

Answer:

a = 1.34

b = -10

The restrictions on ln > 10

7 0
3 years ago
Read 2 more answers
In the figure, polygon ABCD is transformed to create polygon A'B'CD
zloy xaker [14]
Dilation by a factor of 2
3 0
3 years ago
Read 2 more answers
1. A sample consists of 75 TV sets purchased several years ago. The replacement times of those TV sets have a mean of 8.2 years.
Greeley [361]

Answer:

8.2+/-0.25

= ( 7.95, 8.45) years

the 95% confidence interval (a,b) = (7.95, 8.45) years

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 8.2 years

Standard deviation r = 1.1 years

Number of samples n = 75

Confidence interval = 95%

z value(at 95% confidence) = 1.96

Substituting the values we have;

8.2+/-1.96(1.1/√75)

8.2+/-1.96(0.127017059221)

8.2+/-0.248953436074

8.2+/-0.25

= ( 7.95, 8.45)

Therefore the 95% confidence interval (a,b) = (7.95, 8.45) years

3 0
2 years ago
Write an equation of the perpendicular bisector of the line segment whose endpoints are (−1,1) and (7,−5)
icang [17]

The equation is y = \frac{3}{2} x - \frac{11}{2}

<u>Explanation:</u>

We have to first find the mid-point of the segment, the formula for which is

(\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )

So, the midpoint will be (\frac{-1+7}{2} , \frac{1-5}{2} )\\\\

                                  = (3,-2)

It is the point at which the segment will be bisected.

Since we are finding a perpendicular bisector, we must determine what slope is perpendicular to that of the existing segment. To determine the segment's slope, we use the slope formula \frac{y_2-y_1}{x_2-x_1}

The slope is \frac{-5-1}{7+1} = -\frac{2}{3}

Perpendicular lines have opposite and reciprocal slopes. The opposite reciprocal of  -\frac{2}{3} is \frac{3}{2}

To write an equation, substitute the values in y = mx + c

WHere,

y = -1

x = 3

m = 3/2

Solving for c:

-1 = \frac{3}{2} X 3 + c\\\\-1 = \frac{9}{2}+c\\ \\c = \frac{-2-9}{2} \\\\c = \frac{-11}{2}

Thus, the equation becomes:

y = \frac{3}{2} x - \frac{11}{2}

7 0
3 years ago
Other questions:
  • Lines A and B are represented by the equations given below: Line A: x + y = 5 Line B: x + y = 4 Which statement is true about th
    6·1 answer
  • The middle school is 2.72 kilometers from Marsha's house and 1.54 kilometers from Rayan's house. How much farther does Marsha li
    14·2 answers
  • The first year he invested $1,000 and made 10% in interest. The second year he was so excited that he added $2,000 to his origin
    5·1 answer
  • What are the next three terms in the sequence? -3, 6, 15, 24, ...
    5·2 answers
  • Triangle DEF has angles that measure
    14·1 answer
  • 4x-(-8y-3x) bnsjskskekjwjjjzi​
    8·1 answer
  • Find the area of the square.<br>1 2/3 m​
    11·1 answer
  • What happens to the pitch you hear when two sound waves constructively
    6·2 answers
  • Determine if the lines are parallel, perpendicular, neither or the same line: 3x + 2y = 1 and y = -x - 1.
    10·2 answers
  • Part B
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!