what is the answer to -2/3-(-2/5)

Answer:

It has zero solutions since its a contradiction

Answer:

No Solution

Step-by-step explanation:

1/2x+6=1/4(2x-24)

Distribute numbers in parenthesis

1/2x+6=1/2x-6

When you try to move both of the x's to the same side, you are left with 0x

6≠-6

Therefore no solution

Answer:

The right answer is: "No because there is a lot of variability in the language arts book data."

Step-by-step explanation:

Answer:

576 ft²

Step-by-step explanation:

Large rectangle:

21·36=756

Smaller rectangle:

15·12=180

Find leftover area:

756-180

=576 ft²

Hope this helps! :)

Answer:

The area that is left for development in the field outside the playground is 576 ft².

Step-by-step explanation:

To calculate the area left for development in the field outside the playground, we need to subtract the area of the smaller rectangle from the area of the larger rectangle.

The area of a rectangle is the product of its width and length:

\(\boxed{\sf Area\;of\;a\;rectangle=width \times length}\)

The dimensions of the larger rectangle are:

The dimensions of the smaller rectangle are:

Therefore, the development area can be calculated as follows:

\(\begin{aligned}\sf Development \;area&=\sf Area_{large\;rectangle}-Area_{small\;rectangle}\\\\&=(21 \times 36)-(15 \times 12)\\\\&=756-180\\\\&=576\; \sf ft^2\end{aligned}\)

Therefore, the area that is left for development in the field outside the playground is 576 ft².

Answer:

1/3

Step-by-step explanation:

just convert it?

3/10

Step-by-step explanation:

60% is the same as 60/100

90% is the same as 90/100

90-60=30

30/100

30/100 is divided by 10 on each side to simplify it to 3/10

Answer:

-56

-0.3

Step-by-step explanation:

Answer:

if they didnt give what x is you just do the numbers but since you cant take 78 from 7 i cant answer that one

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Let's first swing the 1 over to the other side.

-3x<=6

Then, we multiply both sides by -3, switching the direction of the sign.

x>=-2

Because this is greater or equal to, this is a closed circle pointing right.

Therefore, the answer is C

Feel free to tell me if I did anything wrong! :)

Answer:

Step-by-step explanation:

C=2 \(\pi\) x r

so for c you times 2 \(\pi\) by your radius

Area is \(\pi\) times diameter (diameter is two times your radius)

Hope this helps...]

pleasseee mark brainliest, I spent  alot of time on this question....thanks, have a lovely day

Answer:

a) On Call: $2.86/hour

Talk Time: $2.50/hour

b) Talk Time offers the best deal.

c) $3/hour

Multiply 0.05 by 60 because there are 60 minutes in an hour.

Step-by-step explanation:

a) On Call: 10/3.5=2.86

Talk Time: 1.25/0.5=2.50

b) On Call>Talk Time

Talk Time offers the best deal.

c) 0.05x60=3

Multiply 0.05 by 60 because there are 60 minutes in an hour.

Answer:

Step-by-step explanation:

One company wants $10 per 3.5 hours, so they want 10 / 3.5 ≈ 2,86 dollars per hour (after rounding to the closest hundreths).

Second company wants $1.25 per half an hour, so they want 2 * 1,25 = 2,50 dollars per hour.

The unit rate is 2,86:2,50

Answer:

9 x w + 6 = 8

Step-by-step explanation:

Answer:

You have to multiply both sides by 9 instead of just the left side

X = 27

Step-by-step explanation:

x/9 = 3

9 * x/9 = 3 * 9

X = 27

Answer:3
Explanation: For this question the answer sign will be positive so -12+15=15-12 which can be broken into 10-10=0 and 5-2=3 so the answer is 3

Answer:

4m

Step-by-step explanation:

it would be 4m because there are four different copies and the variable being used originally is 'm'. therefore, we can move it around and since addition is basically the longer version of multiplication, we would correct this to 4m.

good luck :)

i hope this helps

have a nice day !!

Answer:

B and D

Step-by-step explanation:

A: (5/6) x 13  =  0.883 x 13  =  10.833 which is less than 13

----> B: 4 x 13  =  52 which is greater than 13

C: (3/4) x 13  =  .75 x 13  =  9.75 which is less than 13

----> D: (10/10) x 13  =  1 x 13  =  13 which is equal to 13

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

2. A and C

3. D

4. D

5. A

Answer:

1. B and D

2. A and C

3. 1/2 x 2,175

4. 54,811 x 2/4

5. Beth sold half the copies Rodney sold.

Step-by-step explanation:

1. 10/10 is the same as 1 so the eqaution 1 x 13 is equal to 13.

2. 1/2 is the same as saying half, so we know that will be less. 1/4 is one fourth so that will also be less.

3. Again, it will be half of 2,175 so we know that's less.

4. Still with the same theme as the other questions it will be half of 54,811.

5. Once again, 1/2 is 50% as I'm sure you know. Meaning she sold half the copies.

PLEASE let me know if that helped or didn't make sense at all.

Answer:

x = 10

Step-by-step explanation:

First, subtract 10 from both sides

Next, Simplify

Then, subtract 5/3x from both sides

After, simplify

Lastly, multiply both sides by 3

Then finally simplify for your final answer of x = 10

Hope this helps! :)

Answer:

x = 10

Step-by-step explanation:

  x + 10 = 1/3(5x + 10)
  x + 10 = 5/3x + 10/3
3x + 30 = 5x + 10
       20 = 2x
        10 = x

Answer:

Step: You have 3 apples a black guy comes and steal 1 you would now have 2 cause you can’t catch a black man

Formula used,

Area of rhombus = Base × height

Substituting the values,

\( \longrightarrow\)Area = 18 × 15.5

\( \longrightarrow\) Area = 279 cm²

Therefore, 279 cm² is the area of the rhombus .

Answer:

D) 279 cm²

Step-by-step explanation:

Area of a rhombus formula:
\(A=bh\)

This formula is also used for squares and rectangles.

So, we can substitute in our values such as:

A=(18)(15.5)

simplify

A=279

Now, add our label and units:

A=279 cm²

Hope this helps! :)

Answer:

Step-by-step explanation: you guys are wrong on all of this

Answer: Answer is D

Step-by-step explanation:

Answer:

\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0\)

Step-by-step explanation:

Given quadratic equation:

\(ax^2 + (2a + 2)x + a + 3 = 0\)

To find the possible values of "a" such that the given equation has two roots and the distance between them on the number line is greater than 1, use the quadratic formula.

\(\boxed{\begin{minipage}{4 cm}\underline{Quadratic Formula}\\\\$x=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}$\\\\when $ax^2+bx+c=0$ \\\end{minipage}}\)

Comparing the coefficients:

Substitute the coefficients into the quadratic formula:

\(x=\dfrac{-(2a+2) \pm \sqrt{(2a+2)^2-4a(a + 3)}}{2a}\)

Simplify the discriminant (the part under the square root sign):

\(x=\dfrac{-(2a+2) \pm \sqrt{-4a+4}}{2a}\)

Factor out 4 from the discriminant:

\(x=\dfrac{-(2a+2) \pm \sqrt{4(-a+1)}}{2a}\)

\(\textsf{Apply the radical rule:} \quad \sqrt{ab}=\sqrt{a}\sqrt{b}\)

\(x=\dfrac{-(2a+2) \pm \sqrt{4}\sqrt{-a+1}}{2a}\)

Therefore:

\(x=\dfrac{-(2a+2) \pm 2\sqrt{-a+1}}{2a}\)

Factor out the common term 2:

\(x=\dfrac{-(a+1)\pm \sqrt{-a+1}}{a}\)

Therefore, the two solutions are:

\(x=\dfrac{-a-1+\sqrt{-a+1}}{a},\;\;x=-\dfrac{a+1+\sqrt{-a+1}}{a}\)

As both solutions have "a" as their denominator, a ≠ 0.

Note: When substituting a = 0 into the original equation, we are left with a linear equation, which only has one root. Therefore, this confirms that a ≠ 0.

Now we have found expressions for the two roots, we can set the distance between them to greater than 1:

\(\dfrac{-a-1+\sqrt{-a+1}}{a}-\left(-\dfrac{a+1+\sqrt{-a+1}}{a}\right) > \:1\)

\(\dfrac{-a-1+\sqrt{-a+1}}{a}+\dfrac{a+1+\sqrt{-a+1}}{a} > \:1\)

Simplify:

\(\begin{aligned}\dfrac{-a-1+\sqrt{-a+1}+a+1+\sqrt{-a+1}}{a}& > 1\\\\\dfrac{2\sqrt{-a+1}}{a}& > 1\\\\2\sqrt{-a+1}& > a\\\\(2\sqrt{-a+1})^2& > a^2\\\\4(-a+1)& > a^2\\\\-4a+4& > a^2\\\\a^2+4a-4& < 0\\\\(a+2)^2-8& < 0\\\\(a+2)^2& < 8\end{aligned}\)

\(\textsf{For\;\;$u^n < a$,\;\;if\;$n$\;is\;even\;then\;\;$-\sqrt[n]{a} < u < \sqrt[n]{a}|$:}\)

\(-\sqrt{8} < a+2 < \sqrt{8}\)

Therefore:

\(-\sqrt{8} -2 < a < \sqrt{8}-2\)

\(-2\sqrt{2}-2 < a < 2\sqrt{2}-2\)

So the possible values of "a" such that ax² + (2a + 2)x + a + 3 = 0 has two roots and the distance between them on the number line is greater than 1 are:

\(\large{\boxed{-2\sqrt{2}-2 < a < 2\sqrt{2}-2,\;\;a\neq0}\)

Answer: The Pyramid has 2 pairs of congruent faces

Step-by-step explanation:

The explanation of congruent is the face has the same shape and same size. On rectangle pyramid, the height triangle are 2 same faces and 2 same faces, so it has 2 pairs of congruent faces

Answer: -6/5

Step-by-step explanation:

Multiplicative inverse simply is another word for 'reciprocal'.

A reciprocal is the fraction upside down, or inverted.

Knowing this, let's convert -5/6.

-5/6 becomes -6/5, and you don't do anything about the negative sign.

Answer: -6/5

Step-by-step explanation:

u just get the reciprocal

Answer: It's congruent because translations, rotations, and reflections only move the shape's location and do not change the shape itself. A rotation changes the shape's position by rotating it around a specific point, but that shape is still the same. Reflections only mirror the shape, so while it will look inverted, it is still the same shape. Translations Only move a shape up or down along the y-axis or laft and right along the x-axis. Congruence essentially means that the shape has the same form and dimensions, not the exact location.