What is the value of x in the equation -2/9x = 2/5? I need help.

Answer:

Basic fact:

a + and a - make a -

Step-by-step explanation:

6 + -3 = 3t + 6

6+-3=6-3

6-3=3

3= 3t+6

-6

-3=3t

divide by 3

-1=t

Answer:

t = -1

Step-by-step explanation:

6 + -3 = 3t + 6

Step One : Subtract 6 from both sides.

6 + -3 - 6 = 3t + 6 - 6

Step Two : Simplify.

3t = -3

Divide both sides by 3.

-3 divided by 3 is -1.

Therefore t is -1. Hope this helps, please mark brainliest if possible!

The number of pool of electrical wire an electrician need is 3.

For the stated question-

Convert each term in improper fraction.

Electrical wire is 3 1/2 = 7/2 feet.

Each pool is 1 1/6 feet = 7/6 feet.

Number of pools = Electrical wire / Each pool

Number of pools = (7/2) / (7/6)

Number of pools = 3

Thus, the number of pool of electrical wire an electrician need is 3.

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Answer:

18+3

Step-by-step explanation:

3x6= 18

and 18+3=21

Answer:

-3

Step-by-step explanation:

You can use  to find the slope of a line going through  and .

I like to line up the points and subtract vertically. Then put 2nd difference over 1st difference.

(6,h)

minus

(7,-10)

------------

-1     h-(-10)

This also said to be equal to -7:

Multiply -1 on both sides:

Subtract 10 on both sides:

[texh=-3\)

So if h=-3 then the slope of the line going through (6,h) and (7,-10) is -7.

Let's test it:

(6,-3)

minus

(7,-10)

----------

-1  7

So the slope is 7/-1=-7. This is the intended goal.

The check is good.

Above picture are the steps

Answer:

2x

_______

x2−3x+2

or 2x/x2-3x+2

We have to find the tenth digit of the decimal expansion of 1234/9999 after the decimal point.

We estimate that this will be a periodic number. We then can find its decimal expression as:

NOTE: when the denominator is a number with all digits equal to 9, the resulting decimal is a periodic decimal with the numerator repeating with a number of digits equal to the number of digits of the denominator.

In this case, we have 9999, so we have 4 digits. Then, the decimal will repeat "1234", a four digit number. If the numerator has more digits, then we would have a mixed number and the whole part should be treated separately.

Then, now we can count. We have 8 decimal digits for the first two repetitions and then 1 for the 9th place and 2 for the 10th place.

Then, the tenth digit of the decimal expansion is 2.

Answer: 2 [Option C]

Answer:

It would be C i believe

Step-by-step explanation:

Answer: I don't know if this would be helpful, but in this case, you can really just move the decimal point to the right the amount of times you see a zero in what you are multiplying it by. 1.86 x 10 = 18.6 , 1.86 x 100 = 186

Step-by-step explanation:

Sorry if its not helpful im trying..

Answer:

3t + 5.25b ≥ 340

Step-by-step explanation:

The left side of the equation is equal to the right side, which confirms that a = 11/10 is the correct solution.

To solve the equation, we need to isolate the variable "a". The equation is given as a - 1/2 = 3/5.
To eliminate the fraction, we can multiply both sides of the equation by the least common denominator (LCD), which is 10. This will clear the fractions and make the equation easier to solve.
Multiplying the left side of the equation by 10, we get:
10(a - 1/2) = 10(3/5)
10a - 5 = 6
Next, we can simplify the equation by adding 5 to both sides:
10a - 5 + 5 = 6 + 5
10a = 11
Finally, we can solve for "a" by dividing both sides of the equation by 10:
(10a)/10 = 11/10
a = 11/10
Therefore, the solution to the equation is a = 11/10 or a = 1 1/10.
To check the solution, substitute a = 11/10 back into the original equation:
11/10 - 1/2 = 3/5
(11/10) - (5/10) = 3/5
6/10 = 3/5
In summary, the solution to the equation a - 1/2 = 3/5 is a = 11/10 or a = 1 1/10. This solution has been checked and is correct.

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Answer: 13

Step-by-step explanation:

The square root and exponent cancel out and you are left with 13.

Answer:

x≤−32

Step-by-step explanation:

On solving the provided question, we can say that - here in the given equation we got x- 1 = 0; x = 1, y = 2

An equation is a formula in mathematics that joins two statements with the equal symbol = to represent equality. The definition of an equation in algebra is a mathematical statement proving the equality of two mathematical expressions. In the equation 3x + 5 = 14, for instance, the terms 3x + 5 and 14 are separated by an equal sign. The link between two phrases on either side of a letter is expressed mathematically. There is often only one variable, which is also the symbol. instance: 2x - 4 Equals 2.

y = 2x +1

y = 3x - 1

x- 1 = 0

x = 1, y = 2

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Answer:

Step-by-step explanation:

Part A: To find the total length of the two sides, you need to add the lengths of Side 1 and Side 2.

Side 1: 3x^2 − 4x − 1

Side 2: 4x − x^2 + 5

Adding these two expressions together, we get:

(3x^2 − 4x − 1) + (4x − x^2 + 5)

Rearranging the terms, we have:

(3x^2 - x^2) + (-4x + 4x) + (-1 + 5)

Combining like terms, we get:

2x^2 + 4

So, the total length of Side 1 and Side 2 is 2x^2 + 4.

Part B: The length of the third side of the triangle can be found by subtracting the sum of Side 1 and Side 2 from the perimeter of the triangle.

Perimeter of the triangle: 5x^3 − 2x^2 + 3x − 8

Total length of Side 1 and Side 2: 2x^2 + 4

Subtracting the sum of Side 1 and Side 2 from the perimeter, we get:

(5x^3 − 2x^2 + 3x − 8) - (2x^2 + 4)

Expanding and simplifying, we have:

5x^3 − 2x^2 + 3x − 8 - 2x^2 - 4

Combining like terms, we get:

5x^3 - 4x^2 + 3x - 12

So, the length of the third side of the triangle is 5x^3 - 4x^2 + 3x - 12.

Part C: The answers for Part A and Part B do show that the polynomials are closed under addition and subtraction. When we added the lengths of Side 1 and Side 2, we obtained the polynomial expression 2x^2 + 4, which is a polynomial. When we subtracted the sum of Side 1 and Side 2 from the perimeter of the triangle, we obtained the polynomial expression 5x^3 - 4x^2 + 3x - 12, which is also a polynomial. Therefore, both addition and subtraction of the polynomials resulted in valid polynomial expressions, indicating closure under these operations.

Answer:

-6

Step-by-step explanation:

To find the slope, you do y₂ - y₁ / x₂ - x₁

y₂ - y₁ / x₂ - x₁

= -35 - 11 / 5 - 1

= -24 / 4

= -6

The slope is -6

Answer:

-6

Step-by-step explanation:

Hi,

To find the slope when given a table, just pick two points, subtract the y values, and then divide them by the x values after you subtract them as well. Here's what I mean...

Let's use 1, -11 and 5, -35

So...

-35 - (-11)

This is the change in y. -35 - (-11) is the same thing as -35 + 11 (subtracting  negative switches to adding it)

You get -24

Now, the change in x.

5 - 1 = 4

So, -24/4 and you get the slope of : -6

I hope this helps :)

Answer:

Step-by-step explanation:

Surface area = 2×(base’s area) + lateral area

                     = 2×(base’s area) + (Perimeter of the base)×height  

                     = 2×(π×12^2)+((2×π×12)×36)

                     =3 619,11473693544

Answer:

the answer is b

Step-by-step explanation:

Answer:

Y=-3x+7

Step-by-step explanation:

it hit the y axis at 7

And it is going down by 3

The length of an arc AB from the given circle with radius 6in is 15.7in

The formula for calculating the length of an arc is expressed as:

L = r theta

where

r is the radius = 6in

theta is the central angle = 150 degrees = 5/6π rad

Substitute

L = 6(5/6π)

L = 5π

L = 5(3.14)

L = 15.7in

Hence the length of an arc AB from the given circle with radius 6in is 15.7in

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Answer: D

Step-by-step explanation: I did the test

The value of the expression `log_6 7 • log_7 8 • .... • log_n (n+1) • log_(n+1) 6` is `1`.

To find the value of the expression `log_6 7 • log_7 8 • .... • log_n (n+1) • log_(n+1) 6`,

you need to use the logarithmic identity which states that `loga (b) × logb (c) = loga (c)` provided that `

a`, `b`, and `c` are positive numbers and `b ≠ 1`.

Thus, applying this identity to the expression `log_6 7 • log_7 8 • .... • log_n (n+1) • log_(n+1) 6`,

we get:

`log_6 7 × log_7 8 × .... × log_n (n+1) × log_(n+1) 6= log_6 8 × log_8 9 × .... × log_n (n+2) × log_(n+2) 6= log_6 6= 1

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Answer:

7.5

Step-by-step explanation:

90÷12 = 7.5.

The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of items. Division is the reciprocal of multiplication.

90 divided by 12,

on dividing 90 by 12 we get,

7.5 as quotient and 6 as remainder.

Quotient is the number of times a division is completed fully, while the remainder is the amount left that

Hence, 90÷12 = 7.5.

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The value of a = -2 and b = 3.

What is a system of equations?

A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, often known as a system of equations or an equation system.

Here, we have

Given: 3a - 5b = -26, a + 2b = 6

We have to solve this equation.

3a - 5b = -26...(1)

a + 2b = 6...(2)

Now we multiply equation (1) by 2 and equation (2) by 5 and we get

6a - 10b = -52....(3)

5a + 10b = 30....(4)

After solving equations (3) and (4), we get

11a = -22

a = -2

Now we put the value of 'a' in equation(3) and we get

6(-2) - 10b = -52

-10b = -52 + 12

-10b =  -30

b = 3

Hence, the value of a = -2 and b = 3.

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Answer:

the answer is a, it was quite easy, has I saw it I already knew the answer

Answer:a

Step-by-step explanation:

The coordinates of the centroid of a triangle with vertices X(−4, 0) , Y(−1, 4) , and Z(2, 2) is; (x, y) = (-1, 2)

Centroid of a Triangle states that  the center of the triangle can be calculated as the point of intersection of all the three medians of that same triangle, and that this median is a line drawn right from the midpoint of one side to the opposite vertex.

We are given the coordinate of the vertices of the triangle as;

X(−4, 0) , Y(−1, 4) , and Z(2, 2)

Now, the formula to find the coordinates of the centroid of the triangle is; (x, y) = (x₁ + x₂ + x₃)/3, (y₁ + y₂ + y₃)/3

Thus, the coordinates of the Centroid is;

(x, y) = (-4 + (-1) + (2))/3, (0 + 4 + 2)/3

(x, y) = (-1, 2)

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to find the fraction of losses, we need to divide the total amount of losses by the total amount of games played.

if we know that the Rangers won 14 games but they played 25, we can write an equation to find the amount of games lost.

14 + n = 25, where n equals the amount of losses.

now we isolate by moving the 14 to the other side. to do this, we must subtract 14 from both sides, leaving us with n = 11. now we know they lost 11 games.

to find the fraction of lost games, all we need to do is divide 11 by 25 without completing the division. that leaves us with 11/25.

the Rangers lost 11/25 games during the season

hope this helped!!

Answer:

225

Step-by-step explanation:

135/15=9x25=225

0.003 is the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations

To calculate the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations.The mean is the expected number of calls involving a fax transmission, while the standard deviation is the measure of variability in the distribution. We then use this information to calculate the probability of exceeding the expected number by more than 2 standard deviations, which can be done using the z-score formula. The z-score for values more than 2 standard deviations away from the mean is 2.33, which corresponds to a probability of 0.003. Thus, the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations is 0.003.

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Answer:

x=√y+4 or x=−√y+4

Step-by-step explanation:

Step 1: Add 4 to both sides.

x2−4+4=y+4

x2=y+4

Step 2: Take square root.

x=√y+4 or x=−√y+4