2x+5y+7-(2x+5y-7)
ayudaaaaaaaa​

Answer:

C . (0.75) 15  x  (0.25) 5

Step-by-step explanation:

Took the assignment in edge, it’s right

Its based off of the rule P(A and B) = P(A) x P(B) from multiplication rule for independent events.

The probability that in 20 flips, the first 15 land heads up and the last 5 land tails up is 0.000390625.

Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.

If the coin is supposed to land heads up 75% of the time, then the probability of getting heads on a single flip is 0.75 and the probability of getting tails is 0.25.

To find the probability that in 20 flips, the first 15 land heads up and the last 5 land tails up, you can use the formula for the probability of independent events:

P(A and B) = P(A) × P(B)

where A and B are independent events, and P(A) and P(B) are the probabilities of events A and B occurring, respectively.

In this case, the probability of the first 15 flips landing heads up is P(A) = 0.75¹⁵, and the probability of the last 5 flips landing tails up is P(B) = 0.25⁵.

Therefore, the probability that in 20 flips, the first 15 land heads up and the last 5 land tails up is:

P(A and B) = P(A) × P(B) = (0.75¹⁵) × (0.25⁵) = 0.000390625

Learn more about probability here:

brainly.com/question/11234923

#SPJ2

Answer:

[tex]3 \times \frac{16}{25} [/tex]

Answer:

Step-by-step explanation:

Step-by-step explanation:

multiplying by 0.25 is same as find the 1/4 of a number. it can also be said the number is reduced by 75% of itself or number is reduced by 3/4th of itself.

For example let the number be 100.

0.25*100=25 also 100/4=25 or 100-0.75*100= 25 or, 100-(3/4*100)= 25

Answer: 17/20=0.85

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

For each triangle, you are given two sides and the included angle (the one between those 2 sides). That's side-angle-side, so it is S-A-S.

The SAS Rule for Similar Triangles says that for 2 triangles X and Y, if you have the SAS of one and the SAS of the other, then X and Y are similar (same shape and proportions) if

(a) the angle in X is congruent (same) as the angle in Y

(b) the ratio between the two given sides in X is the same as the ratio between the two given sides in Y

For this particular problem, the ratio PR/PQ = 18/21 = 6/7 if you simplify by dividing both top and bottom by 3.

So we are looking for another triangle where we have the same ratio. (Put the smaller number on top, in the fraction.)

Answer A:  12/15 simplifies to 4/5, wrong answer

Answer B:  9/12 simplifies to 3/4, wrong answer

Answer C:  6/10 simplifies to 3/5, wrong answer

Answer D: 15/17.5 looks harder, because there is a decimal in it. But we know 17.5 is just 17 and a half, so I would first multiply top and bottom by 2

We get 30/35. That looks a lot better. Now it is easier to see we can divide both top and bottom by 5.

We get 6/7! That is the correct answer, so D is the triangle similar to PQR.

Answer:

2y2+2y+6

Step-by-step explanation:

Answer:

y=7/3= -3.500

y=1

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "y2" was replaced by "y^2". 1 more similar replacement(s).

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

4*y^2-5*y+2-(6*y^2-5)=0

Step by step solution :

STEP

1

:

Equation at the end of step

1

:

(((4•(y2))-5y)+2)-((2•3y2)-5) = 0

STEP

2

:

Equation at the end of step

2

:

((22y2 - 5y) + 2) - (6y2 - 5) = 0

STEP

3

:

STEP

4

:

Pulling out like terms :

4.1 Pull out like factors :

-2y2 - 5y + 7 = -1 • (2y2 + 5y - 7)

Trying to factor by splitting the middle term

4.2 Factoring 2y2 + 5y - 7

The first term is, 2y2 its coefficient is 2 .

The middle term is, +5y its coefficient is 5 .

The last term, "the constant", is -7

Step-1 : Multiply the coefficient of the first term by the constant 2 • -7 = -14

Step-2 : Find two factors of -14 whose sum equals the coefficient of the middle term, which is 5 .

-14 + 1 = -13

-7 + 2 = -5

-2 + 7 = 5 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -2 and 7

2y2 - 2y + 7y - 7

Step-4 : Add up the first 2 terms, pulling out like factors :

2y • (y-1)

Add up the last 2 terms, pulling out common factors :

7 • (y-1)

Step-5 : Add up the four terms of step 4 :

(2y+7) • (y-1)

Which is the desired factorization

Equation at the end of step

4

:

(1 - y) • (2y + 7) = 0

STEP

5

:

Theory - Roots of a product :

5.1 A product of several terms equals zero.

When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

5.2 Solve : -y+1 = 0

Subtract 1 from both sides of the equation :

-y = -1

Multiply both sides of the equation by (-1) : y = 1

Solving a Single Variable Equation :

5.3 Solve : 2y+7 = 0

Subtract 7 from both sides of the equation :

2y = -7

Divide both sides of the equation by 2:

y = -7/2 = -3.500

Supplement : Solving Quadratic Equation Directly

Solving 2y2+5y-7 = 0 directly

Earlier we factored this polynomial by splitting the middle term. let us now solve the equation by Completing The Square and by using the Quadratic Formula

Parabola, Finding the Vertex :

6.1 Find the Vertex of t = 2y2+5y-7

Parabolas have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "t" because the coefficient of the first term, 2 , is positive (greater than zero).

Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions.

Parabolas can model many real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex.

For any parabola,Ay2+By+C,the y -coordinate of the vertex is given by -B/(2A) . In our case the y coordinate is -1.2500

Plugging into the parabola formula -1.2500 for y we can calculate the t -coordinate :

t = 2.0 * -1.25 * -1.25 + 5.0 * -1.25 - 7.0

or t = -10.125

Parabola, Graphing Vertex and X-Intercepts :

Root plot for : t = 2y2+5y-7

Axis of Symmetry (dashed) {y}={-1.25}

Vertex at {y,t} = {-1.25,-10.12}

y -Intercepts (Roots) :

Root 1 at {y,t} = {-3.50, 0.00}

Root 2 at {y,t} = { 1.00, 0.00}

I hope this can help you

Answer:

A dot is a physical object, not a mathematical object. A dot has a size and is roughly circular, but the size is not defined. It’s a fuzzy concept; how big does it have to be before it’s no longer a dot but a blot? An how irregular can a dot be?

A point is a mathematical object in geometry. It has a position but no size. It has no definition because none of the basic objects of mathematics has a definition. The axioms of geometry give relationships between and properties of undefined terms such as point, line and plane.

Step-by-step explanation:

Answer:

x = 128 degrees

Step-by-step explanation:

all triangles contain 180 degrees

the upper left corner angle is 52 degrees because 180 -90 - 38 = 52.

angle x is supplementary to 52 degrees so x = 180 -52 = 128 degrees

Answer:

x = 128°

Step-by-step explanation:

the interior ∡ (created by the 2 parallel lines) adjacent to the 38° ∡ measures 142°

therefore, we know the measure of the alternate interior and exterior angles created by the parallel lines as well

the second 38° ∡ is vertical to the top angle of the little right triangle, so the angle that forms a linear pair with 'x' is 180-(90+38), or 52°

therefore, m∡x = 180-52, or 128°

Answer:

no seeeeeee hablar inglés pero quiero ayudar pero como hablas inglés no puedo lo siento pero si sabes español dime que escribiste ok

Answer:

A person (or institution) who invest the money or makes the funds available is called the lender or creditor.

Step-by-step explanation:

Answer:

B. multiply by

Answer:303.48

Step-by-step explanation:

Answer:

no entendí pero alv XD ksjwwlw[qjaja[aoa\a'a[a=a,[sala;a

Answer:

20,00,00

Step-by-step explanation:

Step-by-step explanation:

[tex] \large{ \underline{\tt{G \: I \: V \: E \: N : }}}[/tex]

[tex] \large{\underline{ \tt{T \: O \: \: F \: I \: N \: D : }}}[/tex]

[tex] { \large{\underline{ \tt{S\: O \: L \: U \: T \: I \: O \: N \: : }}}}[/tex]

♢ [tex] \large{ \tt{a + bc}}[/tex]

We are given the values of a , b & c as 7 , 4 & 2 respectively. Plug those values in the given expression and then simplify!

⟼ [tex] \large{ \tt{7 + 4 \times 2}}[/tex]

Multiply 4 by 2

⟼[tex] \large {\tt{7 + 8}}[/tex]

Add the numbers : 7 and 8

⟼ [tex] \large{ \tt{15}}[/tex]

[tex] \pink{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \underline{ \bold{ \tt{15 }}}}}}}}[/tex]

Hope I helped ! ♡

Have a wonderful day / night ! ツ

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Answer:

it's 15

Step-by-step explanation:

7b + 8b² + 3 + y + 2b + 2y + 2 =

[tex] \tt \dashrightarrow 7b + 8b^2 + 3 + y + 2b + 2y + 2 [/tex]

[tex] \tt \dashrightarrow 8b^2 + 7b + 2b + y + 2y + 2 + 3[/tex]

[tex] \tt \dashrightarrow 8b^2 + 9b + 3y + 5[/tex]

Hence, answer is 8b² + 9b + 3y + 5.

So, correct option is 4th one.

Answer:

8

Step-by-step explanation:

Using Pythagoras theorem, The missing side is equal is sqrt(10^2-6^2) = 8

Answer:

35/8

Step-by-step explanation:

4×8= 32 plus the 3/8 equals 35/8

hope it helps

Answer:

[tex]y + 6 = -2 (x-4)[/tex]

Step-by-step explanation:

Point-slope formula is represented by the equation [tex]y-y_1 = m (x-x_1)[/tex]. When knowing a point a line crosses through and its slope, you can write an equation in this form. Substitute the [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] for real values.

The [tex]m[/tex] represents the slope of the line. Since we know the slope is -2, substitute -2 for [tex]m[/tex]. The [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of the point the line passes through. Since the line passes through (4, -6), substitute 4 for [tex]x_1[/tex] and -6 for [tex]y_1[/tex]. This gives the following answer and equation:

[tex]y-(-6) = -2 (x - (4))\\y + 6 = -2 (x-4)[/tex]

Answer:

y=-2x+2

Step-by-step explanation:

y-y1=m(x-x1)

y-(-6)=-2(x-4)

y+6=-2(x-4)

y=-2x+8-6

y=-2x+2

Answer:

D. (2,7) (4,9) (6,11) (8,13)

Step-by-step explanation:

If you download the DESMOS app or go on their website (legit not fake) you will find that D will be a line function.

Hope this helped

Answer:

a = -2

Step-by-step explanation:

-3a + 8 = 14

First you want to combine the constants by subtracting 8 from both sides.

-3a = 6

Now you want to isolate a by dividing both sides by -3.

a = -2

Check your answer by plugging -2 back into the equation.

-3(-2) + 8 = 14

6 + 8 = 14

14 = 14

Your answer is correct.

Hope this helps!

Answer:

X = -16

Step-by-step explanation:

5x+4y=-12 Y=-2x-9

substitute the value of y

5x + 4(-2x - 9)=12

solve the equation

x=-16

Answer:

b.

Step-by-step explanation:

...

Answer:

3/10

Step-by-step explanation:

Mary ate 3/10

Peter ate 4/10

that equals 7/10

so 3/10 is left

Answer:

it depends on the person

Answer:

yea , we are tbh , we toxic . but we kinda lovable . we dont like large spaces . and we snakes

Step-by-step explanation:

Answer:

i guess 3/8

because it is third part of the whole 8 part .

i hope you get it!?

Answer:

You have:

If you consider working weekends as well:

For assignments to do for every 5-day week :

9 weeks = 116 assignments

∴ For every week = 116/9 = 13 assignments

________________________________

For assignments to do for every day :

9 weeks = 116 assignments

We have 5 days in 1 week

∴ 9 weeks = 9 × 5 = 45 days

∴ For every day = 116/45 = 3 assignments (approx.)

________________________________

For assignments to do for every month :

1 month = about 30 days

∴ 65 days = 2 months 5 days = 2.2 months (approx.)

∴ For every month = 116/2.2 = 52 assignments (approx.)