All categories

2 years ago

Identify the property demonstrated by the equation. 4 + 5 = 5 + 4

Mathematics

2 answers:

Sidana [21]2 years ago

8 0

Commutative property

umka2103 [35]2 years ago

3 0

Answer:

Commutative property of addition

Step-by-step explanation:

You might be interested in

Answer 4 and 5 pleaseeeeeeeeee

rusak2 [61]

4.)
To solve for Y it is To solve for X
-8y=-6x -8y=-6x
/-8 /-8 /-6 /-6

y=3/4(x) 4/3(y)=x

5.)
to solve for Y To solve for X
1/2(y)=4(2x-1/4) 1/2(y)=4(2x-1/4)
1/2(y)=8x-1 /4 /4
*2 *2 y/8=2x-1/4
+1/4 +1/4
y=16x-2 (y/8)+1/4=2x
/2 /2

((y/8)+1/4)/2=x

5 0

3 years ago

How to divide this problem

Leno4ka [110]

The answer is 2.35. 4.23/1.8 = 2.35

6 0

3 years ago

Solve the equation.<br>8(4-x) = 7x + 2

GalinKa [24]

32-8x = 7x + 2

32= 15x + 2

30= 15x

X= 2

Hope this helps!

7 0

3 years ago

Read 2 more answers

A car is advertised as having a gas mileage rating of at least 30 miles/gallon in highway driving. Suppose the miles per gallon

Aliun [14]

Answer:

We conclude that the car have mileage rating less than 30 miles per gallon.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 30 miles/gallon

Sample:

26, 24, 20, 25, 27, 25, 28, 30, 26, 33

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{264}{10} = 26.4$

Sum of squares of differences = 110.4

$S.D = \sqrt{\frac{110.4}{9}} = 3.50$

Sample size, n = 10

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu \geq 30\text{ miles per gallon}\\H_A: \mu < 30\text{ miles per gallon}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{26.4 - 30}{\frac{3.50}{\sqrt{10}} } = -3.25$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } =-1.833$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it.

We conclude that the car have mileage rating less than 30 miles per gallon.

b) We assumed that the level of significance is 0.05 that is 5%.

7 0

3 years ago

A set of angles has a ratio of 5 to 2. If the larger angle is 105 degrees then what is the measure of the smaller angle?

Bond [772]

Answer:

5:2

5:105

2:x

=105*2=5x

=210/5x

=smaller angle is euqals to 42 degree's

Step-by-step explanation:

we first note down the ratio

since we given the degree of the larger ratio we write 5 is equal to 105 and 2 is equals to x. we looking for x which is the degree of the smaller angle

after that we cross multiple, when we cross multiple therefore it gives us 105 multiplied by 2 and 5 multiplied x

it will give us 210 and 5x remember we a looking for the value of x

in order for us to remain juss x we divide 210 by 5x

it will give us x= 42

remember x here represent the value of the smaller angle

3 0

3 years ago