All categories

3 years ago

Solve 1.3 (-6) (-4.25)

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

8 0

Step 1. <span>Simplify

33.15

Done! :) Your answer is 33.15</span>

You might be interested in

Beverly is starting a new diet. Her current weight is 160 pounds. She expects to lose 4 pounds per month. If x represents the nu

nevsk [136]

The answer is B) or y = -4x + 160

If her initial weight is 160 pounds, then you must subtract 4x, representing how much weight she lost over time, to find her current weight y

But, since y = 160 – 4x isn't an option, we can reverse to negatives as long as you change the addition/subtraction sign

So, subtracting positive 4x is the same as adding -4x

Therefore, y = 160 – 4x is the same as y = -4x + 160

4 0

3 years ago

Read 2 more answers

How would I solve this?<br><br>(3x-4) - (4x-1)

saveliy_v [14]

Answer:

-x - 3

Step-by-step explanation:

(3x - 4) - (4x - 1) =

The first set of parentheses is unnecessary, so you can just remove it.

= 3x - 4 - (4x - 1)

To remove the second set of parentheses, you must distribute the negative sign to its left by the terms inside the parentheses. To do this, change every sign inside the parentheses.

= 3x - 4 - 4x + 1

Now combine like terms. Terms with x are like terms and are combined together. Therms without x are like terms and are combined together.

= 3x - 4x - 4 + 1

= -x - 3

4 0

3 years ago

Is 14.875 a irrational number?

Tresset [83]

Answer:yes

Step-by-step explanation:it is

8 0

3 years ago

Read 2 more answers

Questions 2-7 will all be in regards to this data set:Observation X Y1 20 302 23 353 28 404 26 385 24 376 32 457 35 508 24 349 3

Tomtit [17]

Answer:

r =0.4437

Step-by-step explanation:

We have the follwoing dataset:

X: 20,23,53,4,24,32,35,24,31,23

Y: 30,35,40,38,37,45,50,34,42,32

n=10

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

n=10 $\sum x = 269, \sum y = 383, \sum xy = 10609, \sum x^2 =8645, \sum y^2 =15007$

Th excel figure attached shows the calculations for each sum.

$r=\frac{10(10609)-(269)(383)}{\sqrt{[10(8645) -(269)^2][10(15007) -(383)^2]}}=0.4437$

So then the correlation coefficient would be r =0.4437

3 0

4 years ago

A card game has 50 cards. After dealing 7 cards to each player, tupi has 15 cards left over. solve the equation

KIM [24]

50 - 15 = 35

35 ÷ 7 = 5

So there were 5 players and your equation would be:-

50 - 15 ÷ x = 5

x = 7

Hope i helped:P

5 0

3 years ago