can someone help with all 4 questions and show work on how to do all of them please

[tex]~~~~~~(8x-17)+(3x+2)+63 = 180\\\\\implies 11x +48=180\\\\\implies 11x = 180-48\\\\\implies 11x = 132\\\\\implies x= \dfrac{132}{11}\\\\\implies x= 12[/tex]

Answer:

x = 12.

Step-by-step explanation:

The sum of the 3 angles is 180, so:

8x - 17 + 3x + 2 + 63 = 180

11x -15 + 63 = 180

11x = 180  + 15 - 63

11x = 132

x = 132/11 = 12

An expression is defined as a set of numbers, variables, and mathematical operations. The value of the expression (−3+2j)(4j−7) is 8j²-26j+21.

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The value of the expression (−3+2j)(4j−7) can be expression is,

(−3+2j)(4j−7)

= -12j + 21 + 8j² -14j

= 8j² -26j +21

Hence, the value of the expression (−3+2j)(4j−7) is 8j²-26j+21.

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Answer:

don't understand

what do u mean

Answer:

0.02<P-value<0.04

Step-by-step explanation:

solved in Khan Academy

Answer:

85 as aparcentege

85/100

0.85%

Answer:

bule is in the spot of green in the sixth place of box 5

Step-by-step explanation:

Answer:

1311

Step-by-step explanation:

Answer:

The answer is b (the second option)

Step-by-step explanation:

Answer:

0.892

Step-by-step explanation:

The probability that it is raining and the flight is delayed is 0.008.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favourable outcomes/Total number of outcomes.

Given that, the probability that it will rain is 0.14 and the probability that the flight will be delayed is 0.06.

Let P(A)=0.14 and P(B)=0.06

Here, P(A and B)=P(A)×P(B)

=  0.14 ×0.06

= 0.0084

= 0.008

Therefore, the probability that it is raining and the flight is delayed is 0.008.

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Answer:

42.29

Step-by-step explanation:

a^2+b^2=c^2

5^2+45^2=c^2

25+1764=c^2

1789 = c^2

sqrt 1789

= 42.29

Answer:

9, if you round to 2 Decimal Places.

(C = 18π = 18 × π = 56.54 (2 DP))

r = C ÷ 2π

   = 56.54 ÷ 2 × π ≈ 9

If the value of a and e is 5 and 4, then the value of b is 3. Then the equation of the ellipse will be given below.

[tex]\rm \dfrac{x^2 }{25} +\dfrac{y^2}{9} = 1[/tex]

Ellipse is a locus of a point that moves in a plane such that the sum of its distances from the two points called foci adds up to a constant. It is taken from the cone by cutting it at an angle.

The vertices (±5,0) and foci (±4,0) are given. Then the equation of the ellipse will be

We know that the general equation of the ellipse will be

[tex]\rm \dfrac{x^2 }{a^2} +\dfrac{y^2}{b^2} = 1[/tex]

Then the value of a will be

a = 5

And the value of the eccentricity will be

e = 4/5

Then the value of the b will be

[tex]\rm b^2 = a^2 - a^2e^2\\\\b^2 = 5^2 - 5^2 \times \dfrac{4^2}{5^2}\\\\b^2 = 25 - 16\\\\b \ = 3\\[/tex]

Then the equation will be

[tex]\rm \dfrac{x^2 }{5^2} +\dfrac{y^2}{3^2} = 1\\\\\rm \dfrac{x^2 }{25} +\dfrac{y^2}{9} = 1[/tex]

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The different units of measurement (millimeters, centimeters, meters and kilometers) are used to measure from very short distances such as the amount of a medicine in a syringe to long distances between cities.

Measurement units are a series of references that are used to measure different elements and factors. Specifically, the units of measure for distance measure the distance between two points.

However, not all units of measure work for all situations, for example:

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Answer:

0.48.

Step-by-step explanation:

There are 2 ways that a tail lands once:-

Tail + head or

head + tail.

Prob(Tail on one throw) = 0.4

Prob(Head on one throw) = 1 - 0.4 = 0.6.

Prob(Tail first then head) = 0.4 * 0.6 = 0.24

Head then tail has the same probability (0.6*0.4).

So the requred probability = 0.24 + 0.24

= 0.48.

The cylinder is a three-dimensional shape, and the base area of the cylinder is 12π square feet

The given parameters are:

The volume of a cylinder is calculated using:

Volume =  Base area * Height

So, we have:

216π = Base area * 18

Divide both sides by 18

Base area = 12π

Hence, the base area of the cylinder is 12π square feet

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Answer:

12

Step-by-step explanation:

Answer:

she will pay 614.14 because 523 + 18% = 6.14.14

Step-by-step explanation:

Hope this helps!!

The solution to all parts are given below:

The experimental probability of an event occurring is the number of times that it occurred when the experiment was conducted as a fraction of the total number of times the experiment was conducted.

1. The experiment is to spin the wheel and get the number and related to that number reward will be there.

2. The outcomes will be,

{1, 2, 3, 4, 5, 6, 7, 8}

3. Sample space

{1, 2, 3, 4, 5, 6, 7, 8}

4. Event of red with even number

= 2 , 6

5.  Event of red with odd number

= 3,7

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The probability of getting the green apple is 7/20 option (B) 7/20 is correct.

It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

We have:

P(red) = 2/5

P(yellow) = 1/4

The sum of the probability of the event is 1.

P(red) + P(yellow) + P(green) = 1

2/5 + 1/4 + P(green) = 1

P(green) = 1 - (2/5 + 1/4)

P(green) = 7/20

Thus, the probability of getting the green apple is 7/20 option (B) 7/20 is correct.

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Answer:

1, 2 +, 3 | 1, +, + | 1 +, 2 +, +

1, 2, 3, 4 | 2, 3, 5, 6 | 1, 3, 4, 5, 6

Step-by-step explanation:

Answer:

a = 2.5

Step-by-step explanation:

It is mentioned that 2 is a zero of the polynomial f(x) = ax² - 3(a - 1)x - 1

So that means :

⇒ f(x) = 0

⇒ x = 2

Substituting and solve for a :

⇒ 0 = a(2)² - 3(a - 1)(2) - 1

⇒ 0 = 4a - 6(a - 1) - 1

⇒ 0 = 4a - 6a + 6 - 1

⇒ 2a = 5

⇒ a = 2.5

Answer:

2

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

you have to do a^2+b^2=c^2, so a you don't know so skip that then for the b u would put 12^2 wich is 144 then you know the c witch us 13^2 wich is 169. then solve the equation which would give you a answer of 5

Answer: £9.3 more

Step-by-step explanation:

Price for winter tickets: £18 + £18 + £14 = £50

Summer tickets pricing:

£18 + 20% = £21.6  

£14 + 15% = £16.1

Price for summer tickets: £21.6 + £21.6 + £16.1 = £59.3

Subtract winter tickets from summer tickets for difference:

£59.3 - £50 = £9.3

Answer: A

Step-by-step explanation:

[tex]\bf (x+y)^2(x-y)^2[/tex]

==============

===============

[tex]\rightarrow \sf x^4-2x^2y^2+y^4[/tex]

breakdown

[tex]\rightarrow \sf x^4-x^2y^2-x^2y^2+y^4[/tex]

factor common term

[tex]\rightarrow \sf x^2(x^2-y^2)-y^2(x^2-y^2)[/tex]

collect in groups

[tex]\rightarrow \sf (x^2-y^2)(x^2-y^2)[/tex]

apply difference between two square method: x² - y² = (x+ y)(x-y)

[tex]\rightarrow \sf (x+y)(x-y) (x+y)(x-y)[/tex]

simplify

[tex]\rightarrow \sf (x+y)^2(x-y)^2[/tex]

Answer:

89%

Step-by-step explanation:

500-55=445

445/500=0.89

0.89x100=89

$500- $55= $445

445/500 = 89/100

89/100 × 100/1= 89%

Answer: 89%

Answer:

(a)  (3, 0) and (-8, 0)

(b)  (-2.5, 0)

(c) x = -2.5

(d) f(-2.5) = -30.25

Step-by-step explanation:

Given quadratic function:

[tex]f(x)=(x-3)(x+8)[/tex]

The x-intercepts are when [tex]f(x)=0[/tex]

[tex]\implies f(x)=0[/tex]

[tex]\implies (x-3)(x+8)=0[/tex]

[tex]\implies (x-3)=0 \implies x=3[/tex]

[tex]\implies (x+8)=0 \implies x=-8[/tex]

Therefore, the x-intercepts are (3, 0) and (-8, 0)

Midpoint between two points:

[tex]\textsf{Midpoint}=\left(\dfrac{x_2+x_1}{2},\dfrac{y_2+y_1}{2}\right)\quad[/tex]

[tex]\textsf{where}\:(x_1,y_1)\:\textsf{and}\:(x_2,y_2)\:\textsf{are the endpoints}}\right)[/tex]

[tex]\implies \textsf{Midpoint of the x-intercepts}=\left(\dfrac{-8+3}{2},\dfrac{0+0}{2}\right)=\left(-2.5},0\right)[/tex]

The extreme point of a quadratic function in the form [tex]f(x)=ax^2+bx+c[/tex] is:

[tex]x=-\dfrac{b}{2a}[/tex]

Therefore, expand the function so that it is in standard form:

[tex]\implies f(x)=x^2+5x-24[/tex]

[tex]\implies a=1, b=5[/tex]

Therefore, the extreme value is:

[tex]\implies x=-\dfrac{5}{2}=-2.5[/tex]

Alternative method

A quadratic function has an extreme value at its vertex.

The x-value of the vertex is the midpoint of the x-intercepts.

Therefore, the extreme value is x = -2.5

[tex]\begin{aligned}\implies f(-2.5) & =(-2.5-3)(-2.5+8)\\& = (-5.5)(5.5)\\& = -30.25\end{aligned}[/tex]