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Artemon [7]
3 years ago
7

If four times a number plus 3 is 11, what is the number

Mathematics
2 answers:
garri49 [273]3 years ago
3 0
4x + 3 = 11
4x = 11 -3
4x = 8
x =8/4
x =2

answer
the number is 2
Nadya [2.5K]3 years ago
3 0
4x + 3 = 11
4x = 11-3 = 8
x = 2

number is 2
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<span>We can make an equation through that information.
X+3+3
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X+6
 
8 0
3 years ago
The regular price of a television set is $1,200. Albert buys the television set at a discount of 35% . How much does he pay for
ololo11 [35]

He pays $780 for the television set.

1200*.35=420

1200-420=780

5 0
3 years ago
Which of the following equations best represents the regression line for the data given in the
True [87]

The regression equation for the data given is y= -8.57 -2.31x

Step-by-step explanation:

The first step is to form a table as shown below;

x           y          xy         x²         y²

1            4           4          1          16

2            1            2          4         1

3            5          15         9         25

4             10         40        16       100

5             16         80        25      256

6              19        114       36        361

7               15       105       49       225

28             60       360      140     984  ------sum

A linear regression equation is in the form of y=A+Bx

where ;

x=independent variable

y=dependent variable

n=sample size/number of data points

A and B are constants that describe the y-intercept and the slope of the line

Calculating the constants;

A=(∑y)(∑x²) - (∑x)(∑xy) / n(∑x²) - (∑x)²

A=(60)(140) - (28)(360)  / 7(140)-(28)²

A=8400 - 10080 /980-784

A= -1680/196

A= - 8.57

B= n(∑xy) - (∑x) (∑y) / n(∑x²) - (∑x)²

B= 7(360)-(28)(60) / 7(60) - (28)²

B=2520 - 1680 /420-784

B=840/-364

B= -2.31

y=A+Bx

y= -8.57 -2.31x

Learn More

Regression equation :brainly.com/question/12280902

Keywords : equations, regression line, data

#LearnwithBrainly

7 0
3 years ago
I need answer please​
Assoli18 [71]

It is centered at (h,k) --> (0,0) and has a radius 9

The equation of the circle is

           (x-h)^{2} +(y-k)^{2} =r^{2} \\(x-0)^{2} +(y-0)^{2} =r^{2}\\x^{2} +y^{2} = 9^{2}

Hope that helps!

4 0
2 years ago
PLEASE HELP ME! IT WOULD BE VERY MUCH APPRECIATED!
shusha [124]

Answer:

A

Step-by-step explanation:

common ratio of 0.5.

hmu for more

7 0
3 years ago
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