2u+15 less than or equal to 55​

Answer:

176

Step-by-step explanation

1/4*320= 80

20%=1/5

1/5*320=64

64+80=144

320-144

Answer:

All options are wrong.................

Answer:

-3.5 i believe

Step-by-step explanation:

Answer : X=-3.5

Step-by-step explanation:

Okaayyy

Set B has the greater mode

Answer:

27 and 28

Step-by-step explanation:

Answer and Step-by-step explanation:

27 and 28.

27 plus 28 equals 55.

To know which numbers to use, we have to find two numbers that would produce a number that would include the digit of the second number in 55. Then, we find numbers that add up to 5, then minus by 1.

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3x-6+4=-20

3x-2=-20

3x=-18

x=-6

Answer:

26

Step-by-step explanation:

2 squares + 3 circles = 31. So, the sum of the squares is divisible by two, and the sum of the circles is divisible by 3. Then, I used trial and error to figure out that the square's value is five, and the circle's value is seven. 5 + 7 + 7 = 19. 27 - 19 = 8. The triangle's value is eight. 5 + 7 + 12 = 24. It works. 15 + 7 + 4 = 26

The sum of the shapes in the fourth row is 24 and this can be determined by using the arithmetic operations and by forming the linear equations.

Given :

In the diagram, each shape has a value and the sums of the shapes in each of the first three rows is given.

Let the symbol of the circle be denoted by 'x', square be denoted by 'y', and triangle be denoted by 'z'.

Now, the linear equations that represent the given diagrams are:

2y + 3x = 31   --- (1)

y + 2x + 3z = 27   --- (2)

3y + x + z = 24    --- (3)

Now, evaluate equation (1) for 'y'.

[tex]\rm y=\dfrac{31-3x}{2}[/tex]  --- (4)

Now, substitute the value of y in equation (2).

[tex]\rm \dfrac{31-3x}{2}+2x+3z=27[/tex]

31 - 3x + 4x + 6z = 54

6z = 23 - x

[tex]\rm z = \dfrac{23-x}{6}[/tex]    --- (5)

Now, substitute the value of 'y' and 'z' in equation (3).

[tex]3\times \dfrac{31-3x}{2}+x+\dfrac{23-x}{6}=24[/tex]

[tex]279-27x+6x+23-x=144[/tex]

158 = 22x

[tex]x = \dfrac{79}{11}[/tex]

Now, substitute the value of x in equations (4) and (5).

[tex]\rm z = \dfrac{23-\dfrac{79}{11}}{6}[/tex]

[tex]z = \dfrac{29}{11}[/tex]

[tex]\rm y=\dfrac{31-3\times \dfrac{79}{11}}{2}[/tex]

[tex]y=\dfrac{52}{11}[/tex]

The last equation is written in terms of x, y, and z as:

= 3y + x + w

Now, substitute the value of known terms in the above equation.

[tex]=3\times \dfrac{52}{11}+\dfrac{79}{11}+\dfrac{29}{11}[/tex]

[tex]=\dfrac{156+79+29}{11}[/tex]

= 24

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Answer:

a) By the Central Limit Theorem, the mean is $142 and the standard deviation is $0.7488.

b) By the Central Limit Theorem, approximately normal.

c) 0.0901 = 9.01% probability that the average cable service paid by the sample of cable service customers will exceed $143

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

The mean monthly fee is $142 and the standard deviation is $29.

This means that [tex]\mu = 142, \sigma = 29[/tex]

Part a: what are the mean an standard deviation of the sample distribution of x hat show your work and justify your reasoning.

Sample of 1500(larger than 30).

By the Central Limit Theorem

The mean is $142

The standard deviation is [tex]s = \frac{29}{\sqrt{1500}} = 0.7488[/tex]

Part b: what is the shape of the sampling distribution of x hat justify your answer.

By the Central Limit Theorem, approximately normal.

Part C: what is the probability that the average cable service paid by the sample of cable service customers will exceed $143?

This is 1 subtracted by the pvalue of Z when X = 143. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{143 - 142}{0.7488}[/tex]

[tex]Z = 1.34[/tex]

[tex]Z = 1.34[/tex] has a pvalue of 0.9099

1 - 0.9099 = 0.0901

0.0901 = 9.01% probability that the average cable service paid by the sample of cable service customers will exceed $143

Answer: 2.16 centimeters

Step-by-step explanation: You would multiply the tail lengths by two, since the tail length is half of the lizards body.

7.25 x 2 = 14.5 and 6.17 x 2 = 12.34

Then you would subtract Haley's lizard's length from Caleb's lizard's length. 14.5 - 12.34 = 2.16

Good luck! :D

Haley's lizard is 2.16 centimeters longer than Caleb's lizard

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We would multiply the tail lengths by two, since the tail length is half of the lizards body.

Thus,

7.25 x 2 = 14.5

6.17 x 2 = 12.34

Then we would subtract Haley's lizard's length from Caleb's lizard's length.

14.5 - 12.34 = 2.16

Therefore, Haley's lizard is 2.16 centimeters longer than Caleb's lizard

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Answer:

C= 18.85 if you want circumference, A= 28.27 if you want area.

Step-by-step explanation:

For circumference, you would want to multiply the radius with pi (pi x 3.14). The formula for it that you could keep in mind is, "C = 2 pi r" For area, the formula of the circle is, "A = pi r^2" or "Area equals pi r squared"

The circumference of a circle with a radius of 3 inches is 18.84 inches.

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.

We have to find the  circumference of a circle with a radius of 3 inches.

The formula for circumference of circle is 2πr

Where r is the radius of the circle.

Given radius is 3 inches

Circumference=2π(3)

=6π

The value of π is 3.14

=6×3.14

=18.84 inches

Hence, the circumference of a circle with a radius of 3 inches is 18.84 inches.

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Answer:

7 bottles

Step-by-step explanation:

first, calculate the volume of the total ammount of soloution

750ml + 9(750ml)=7500ml

then divide by 1000 to put the total into litres

7500/1000=7.5L

7.5L goes into 1L exactly 7 times with a remainder of 500ml as the bottles are required to be completely full

Answer:

thanks

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

I worked it out :)

Answer:

-4

Step-by-step explanation:

Answer:

36

Step-by-step explanation:

So Jonas has ? number of games.

Multiply 12 by 3.

You get thirty-six.

So Jonas has thirty-six games.

One step you take is multiplying 12 by 3.

I hope this helps! :)

Answer:

1 1/2

B

Step-by-step explanation:

Answer:

the amplitude is 5

the period is 4 pi

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

it is a because the 2x+3y simple because you cant add different varibles

The lengths of sides of the parallelogram are 71 inches and 51 inches. Hence, option (C) is correct.

A unique variety of quadrilateral called parallelogram, a parallelogram has both pairs of its opposite sides parallel and equal.

Let sides of the parallelogram are a and b.

The perimeter of parallelogram  = 2(a+b)

Given that,

The perimeter of parallelogram = 244

implies that,

2(a+b) = 244

a+b = 122       (1)

Also, the difference of sides is 20 inches,

implies that,

a-b = 20       (2)

By solving equation (1) and (2),

a = 71 inches,

b = 51 inches.

The lengths of sides of the parallelogram are 71 inches and 51 inches.

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Answer:

x=4.5

Step-by-step explanation:

so when y=20 and x=2, y is 10 times x so, 45/10=4.5

Answer:

3

Step-by-step explanation:

i said by accident but hegarty says it's right

Answer: c is the answer . 176, 4.60

Step-by-step explanation:

just trust me bro

To find the area of a square, multiply the side length by itself, also known as sqaring the side length.We must solve 3/5 x 3/5.3/5 x 3/5 = 0.36The units we'll use is because units are the unt we're given, and it is squared because it is the area of a shape.

To find the area of a square, multiply the side length by itself, also known as sqaring the side length.We must solve 3/5 x 3/5.3/5 x 3/5 = 0.36The units we'll use is because units are the unt we're given, and it is squared because it is the area of a shape.Your final answer is 0.36 .

HOPE THIS HELPS!

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Answer:

$7700

Step-by-step explanation:

As the account earns 6% interest, if we find 6% of $5000 we get $300, the interest is simple and given every month, meaning you get $2700 in interest as $300 x 9 months = $2700

$5000 initial + $2700 interest = $7700

EDIT:

It could be that the interest is 6% yearly, which means that yearly you get 6% interest, and the answer is $5225.

6% interest is $300 per year

$300÷12= $25 per month

$25 x 9 months = $225

$5000 initial plus $225 interest = $5225 total

Answer:

Step-by-step explanation:

To check whether both equations are balanced, we will simplify

6+6 -n =12 - n

Add n to both sides of the equation using additive property

6+6-n+n = 12-n+n

6+6 +0 = 12+0

6+6 = 12 (This gives the other equation)

Since they are both equal, this shows that the equations are balanced

Answer: B. 8

Step-by-step explanation: 3*2=6. What you have to do to the top you have to do to the bottom. So, 4*2=8

The value of each digit in a number is known as the place value. The value of the 5 in the number 40.52 is 10 times the value of the 5 in 115.78.

The value of each digit in a number is known as the place value. The 5 in 350, for example, represents 5 tens, or 50, whereas the 5 in 5,006 represents 5 thousand, or 5,000. It is critical that children that while a digit can be the same, its value is determined by its position in the number.

Identification of the place value of a digit in a number:

The value of 5 in the given numbers can be written as,

Now, we can write the value of the two numbers as,

5 = 0.5 × x

x = 5/0.5

x = 10

Hence, the value of the 5 in the number 40.52 is 10 times the value of the 5 in 115.78.

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Answer:

253cm²

Step-by-step explanation:

Area of the trapezoid = 1/2(b1+b2)*h

Given

h = 22cm

b1 = 10.5cm

b2 = 12.5cm

Substitute

Area of the trapezoid = 1/2(10.5+12.5)*22

Area of the trapezoid = 1/2(23)*22

Area of the trapezoid =11*23

Area of the trapezoid = 253cm²

Hence the area of the trapezoid is 253cm²

Answer:

 r= 25

Step-by-step explanation:

1/5r= -5

1= -25r

r= 25