All categories

3 years ago

What’s the missing number in the table?

Mathematics

2 answers:

alukav5142 [94]3 years ago

4 0

Answer:

Step-by-step explanation:

slope = increase in y divided by increase in x

increase in y = +10

increase in x = +2

slope = 5 (y increases by 5 every time x increases by 1)

x: 1 -> 2

y: -2 -> 3

KiRa [710]3 years ago

3 0

It’s 3. So basically since it’s 5x you go up five over just one and if you do that you will reach where y= positive 3

You might be interested in

What did this person do wrong? Honestly really stuck and do not remember geometry!

dmitriy555 [2]

Answer:

See below.

Step-by-step explanation:

Using the right triangle altitude theorem, the correct proportions are:

$\dfrac{AB}{AC} = \dfrac{AC}{AD}$

$\dfrac{AB}{x} = \dfrac{x}{AD}$

$\dfrac{25}{x} = \dfrac{x}{16}$

$x^2 = 25 \times 16$

$x = 20$

AC = 20 cm

$\dfrac{AB}{CB} = \dfrac{CB}{DB}$

$\dfrac{AB}{y} = \dfrac{y}{DB}$

$\dfrac{25}{y} = \dfrac{y}{9}$

$y^2 = 25 \times 9$

$y = 15$

CB = 15 cm

4 0

4 years ago

A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu

julia-pushkina [17]

By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as under:

α=(1-0.99)/2=0.005

p=1-0.005=0.995

corresponding z value will be 2.575 for p=0.995 .

Margin of error=z*x/d

where x is mean and d is standard deviation.

M=2.575*2.2/ $\sqrt{1492}$

=0.14

So the lower value will be x-M

=8.8-0.14

=8.66

=8.67 ( after rounding)

The upper value will be x+M

=8.8+0.14

=8.94

Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

#SPJ4

8 0

2 years ago

Blaine says that the product of a positive integer and a negative integer is always less than either factor. Is he correct? Prov

Rudik [331]

Answer:

you go to th harris right cause u literally have the same summer schools answers

Step-by-step explanation:

6 0

4 years ago

Expand this expression (x-y)²<br>

pochemuha

Answer:

x^2 - 2xy + y^2.

Step-by-step explanation:

(x - y)^2

= (x - y)(x - y)

= x(x -y) - y(x - y)

= x^2 - xy - xy + y^2

= x^2 - 2xy + y^2.

8 0

3 years ago

What is the circumference of the circle with a diameter of 4cm?

lilavasa [31]

Answer:

12.56

Step-by-step explanation

4 0

4 years ago