plz help I will mark brainliest if I can

Answer:

62.3 units²

Step-by-step explanation:

We would apply the formula for area of a triangle given an included angle, which is A = ½*ab*sin C

Where,

a = 11

b = 14

C = 54°

Substitute

Area = ½*11*14*sin 54

Area = 62.2943085 ≈ 62.3 units² (nearest tenth)

Answer:

The formula to find the perimeter of the quadrilateral = sum of the length of all the four sides.

Step-by-step explanation:

Here the lengths of all the four sides are 5 cm, 7 cm, 9 cm and 11 cm. 2. The perimeter of the quadrilateral is 50 cm and the lengths of three sides are 9 cm, 13 cm and 17 cm

Answer:

2.7

Step-by-step explanation:

yes i'm correct

A circus juggler on the highwire gives a bowling pin a final toss into the air with an initial velocity of 9 meters per second from a height of 11 meters. The time taken by the object to hit the ground is 2.7 seconds.

A quadratic equation is the second-order degree algebraic expression in a variable.

The standard form of this expression is  ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

It is given that,

Initial velocity of an object, u = 9 m/s

Height, h = 11 m

The equation that models the height of the object in meters after t seconds is :

[tex]h(t)= -4.9t^2+9t+11[/tex]

We have to find the time it take for the bowling pin to hit the ground

i.e.   [tex]-4.9t^2+9t+11=0[/tex]

On solving the above quadratic equation, we get the value of time t is :

t = 2.7 seconds

Hence, The time it takes to hit the ground would be 2.7 seconds.

Learn more about quadratic equations here:

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Answer:

sin 60 = √3/2

means perpendicular (p)= √3

and

base (h)=2

find base(b)

using pythagoras theorem

h²=p²+b²

than base (b) will be 1

now

cos 60 =b/h

=1/2

Answer:

cos 60° = 1/2

SohCahToa

sin 60° = opposite / hypotenuse

sin 60° = √3 / 2

The bottom side = √3, the hypotenuse = 2

To find the right side's value, you use Pythagorean's Theorem

cos 60° = adjacent/hypotenuse

cos 60° = 1 / 2

Answer:

1/4 chance of pulling a pencil then 3/4 for ur frend

Answer:

If I remember correctly, possibility is favorable outcome / total possible outcomes.

Step-by-step explanation:

So this means:

Favorable outcomes: 3 (Pencils)

Total possible outcomes: 12 (3 + 5 + 4)

3 / 12 = 0.25

Hope it helps!

Answer:

0.4 is equivalent to 40%

Step-by-step explanation:

the ones that are equivalent are 40% and 0.4, since 40% converted into a decimal is 0.4. 4% isn't equivalent to any of the options because it would be 0.04 as a decimal.

Answer:

Step-by-step explanation:

In cm 2= 60000

gawd daym that's a lot of students  

Answer:

A: There are 30 students in the class.

B: The average age of the class is 31.5.

C: The range goes from age 28 to age 36.

D: The modal age is 30.

Step-by-step explanation:

A: 8+10+5+7 = 30.

B: 8 + 30 + 32 + 36 = 126

    126/4 = 31.5

C: Lowest age is 28 and highest is 36, making that the range for students' ages.

D: The most frequently appearing age in the study is 30, which makes 30 the modal age.

Answer:

The total number of whole cups that we can fit in the dispenser is 25

Step-by-step explanation:

It is given that the height of each cup is 20 cm.

But when we stack them one on top of the other, they only add a height of 0.8 to the stack.  

The stack of cups has to be put in a dispenser of height 30 cm.

So we need o find out how many cups can fit in the dispenser.

Since the first cup is 20 cm high, the height cannot be reduced. So the space to fit in the remaining cups in the stack is only 30-20 cm as that’s the remaining space in the dispenser

So,

30 - 20 = 10 cm

To stack the other cups we have 10 cm of height remaining

As we know that addition of each adds 0.8 cm to the stack, the total number of cups that can be fit in the dispenser can be calculated by the following equation. Let the number of cups other than the first cup be denoted by ‘x’.

10 + 0.8x = 30

0.8x = 20

x = 25

The total number of cups that we can fit in dispenser is 25

Answer:

he had $90

he bought a phone for $75

90-75=15

he has $15 now

15÷0.06=1500÷6=250 minutes

Answer:

This is correct. Thank you!!

Step-by-step explanation:

Answer:

she is right and I added few pages that are hard to read here

Step-by-step explanation:

bye good luck :)

Answer:

Radius: 12 units

Diameter: 16.8 units

Radius: 3.4 units

Diameter: 10 units

Answer:

Radius 12-->452.16

Diameter 16.8-->221.5584

Radius 3.4-->36.2984

Diameter 10-->78.5

Step-by-step explanation:

Answer:

72°

Step-by-step explanation:

I kinda just put it in my calculator...

71.56505118

and I rounded to the nearest degree which was 72°.

Answer:

1820

Step-by-step explanation:

Surface area= 2[tex]\pi[/tex][tex]r^{2}[/tex] + 2

2[tex]\pi[/tex] [tex](10)^{2}[/tex] + 2

628 + 1193.2

= 1821.2  

Answer:

She can't do it, as there is not enough information for that.

Step-by-step explanation:

There is no logical way to do this, and I'm not sure which lesson you are doing

Answer:

Answer is B

Step-by-step explanation:

The value of z₁ - z₂ is C- cos(pi)+isin(pi)

Since z₁ = √2[cos(3π/4) + isin(3π/4)] and z₂ = [cos(π/2) + isin(π/2)]

z₁ - z₂ = √2[cos(3π/4) + isin(3π/4)] - ([cos(π/2) + isin(π/2)])

= √2[cos(3π/4)] + i√2[sin(3π/4)] - cos(π/2) - isin(π/2)

= √2[cos(3π/4)] - cos(π/2) + i√2[sin(3π/4)] - isin(π/2)

Since 3π/4 = 3π/4 × 180°/π = 135° and π/2 = π/2 × 180°/π = 90°,

So,

z₁ - z₂ = √2[cos(3π/4)] - cos(π/2) + i√2[sin(3π/4)] - isin(π/2)

z₁ - z₂ = √2[cos135°] - cos90° + i√2[sin135°] - isin90°

z₁ - z₂ = √2[cos(180° - 45°) - cos90° + i(√2[sin(180° - 45°)] - sin90°)

z₁ - z₂ = √2[-cos45°] - cos90° + i√2[sin45°] - isin90°

cos45° = sin45° = 1/√2 and sin90° = 1 and cos90° = 0.

So,

z₁ - z₂ = √2[-1/√2 ] - 0 + i(√2[1/√2 ] - 1)

z₁ - z₂ = - 1 - 0 + i(1 - 1)

z₁ - z₂ = - 1 + i0

z₁ - z₂ = - 1

So, the magnitude of |z₁ - z₂| = |- 1| = 1 = r

It's argument tanθ = sinθ/cosθ, since sinθ = 0 and cosθ = -1

tanθ = 0/-1 = -0

tanθ = -0 ⇒ tan(π - θ) = 0

Taking inverse tan of both sides, we have

π - θ = tan⁻¹(0)

π - θ = 0

π = θ

Since z₁ - z₂ = r[cosθ + isinθ]  and r = 1 and θ = π, then

z₁ - z₂ = r[cosθ + isinθ]

z₁ - z₂ = 1[cosπ + isinπ]

z₁ - z₂ = cosπ + isinπ

The value of z₁ - z₂ is C- cos(pi)+isin(pi)

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Answer:

As temp. increases, sales increse

Step-by-step explanation:

Answer:

convert the mixed numbers to improper fractions, and then LCD and combine.

Step-by-step explanation:

exact form: -37/4

deciamal form: -9.25

mixed number forms: -9 1/4

Answer:

37.7 mm³

Step-by-step explanation:

Step 1

We find the height of the cone

we are given slant height = 5mm and radius = 3mm

Height = √l² - r²

Where l = Slant height

Hence

h = √5² - 3²

h = √25 - 9

h = √16

h = 4

Hence, the height of the cone = 4mm

Step 2

We can proceed to calculate the volume of the cone

Volume = 1/3 πr²h

π = 3.14

Hence,

Volume = 1/3 × 3.14 × 3² × 4

= 37.68 mm³

Approximately, Volume of the cone to the nearest tenth = 37.7 mm³

Answer:37.7

mm3

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Let the number be x.

2 × x = 10

2x = 10

x = 10 / 2

x = 5

Therefore, the number is 5.

Answer:

5 because it's obvious jwjjejeejjejejdjdnejdudu

Answer:

x = 16 units

Step-by-step explanation:

∆ABC is a 45-45-90 triangle, and ∆BCD is a 30-60-90 triangle.

If side opposite of 90° [∆] = x, side opposite of 45° [∆] = x / √2 = x √ 2 / 2.

Given side AC is opposite of 90° [∆ABC] = 32 √ 2, side opposite of 45° [∆ABC] = 32 √ 2 / √ 2 = 32 which is AB or BC.

Since side BC is part of BCD.

Side opposite of 90° [∆BCD] = BC = 32.

Since x is opposite of 30° [∆BCD].

x = Side opposite of 90° [∆BCD] / 2 = 32 / 2 = 16.

Answer:

it has 3/4

Step-by-step explanation:

Answer:

pretty sure its 123

Step-by-step explanation:

Answer:

10 square units

Step-by-step explanation:

please correct me if im wrong

Answer: it sould be 4  or 2.5

Step-by-step explanation: i think you do 2 times 1 +2 if i am not mistaking

Answer:

I mean its a 50% chance.

Step-by-step explanation:

Because you don't know if its heads or tails. But if its in that order then I think its tails.

Answer:

x = 58.5 m

Step-by-step explanation:

Let us use sine law to find the length of the yellow cable. Note that a cable of length 64 m is directly opposite the 112° angle and the 58° angle is directly opposite the unknown cable length. We can the set up our sine law as follows:

[tex] \frac{x}{ \sin(58) } = \frac{64 \: m}{ \sin(112) } [/tex]

Solving for x,

[tex]x = \frac{ \sin(58) }{ \sin(112) } \times (64 \: m) = 58.5 \: m[/tex]

Step-by-step explanation:

Break down the problem into these 2 equations.

[tex]x - 13 = 44[/tex]

[tex] - (x - 13) = 44[/tex]

Solve the 1st equation x - 13 = 44

[tex]x = 57[/tex]

Solve the 2nd equation: -(x - 13) = 44

[tex]x = - 31[/tex]

Collect solutions.

x = -31, 57

Hence, The answer is x = -31, 57.