Help me with question 20 I will mark brainliest

Answer:

<B=39.80

Step-by-step explanation:

tan(b)=5/6

b=[tex]tan^{-1}[/tex](5/6)

b=39.80557109

b=39.80 to the nearest hundredth.

Answer:

[tex] \angle B= 39.81\degree[/tex]

Step-by-step explanation:

[tex] \because \tan \angle B = \frac {AC}{BC} \\\\

\therefore \tan \angle B = \frac {5}{6} \\\\

\therefore \tan \angle B = 0.833333333\\

\therefore\angle B= \tan^{-1}(0.833333333)\\

\therefore\angle B= 39.805569965\degree \\

\huge \purple {\boxed {\therefore\angle B= 39.81\degree}} [/tex]

Answer:

4/3

Step-by-step explanation:

Slope is calculated by [tex]\frac{y1-y2}{x1-x2}[/tex] so now you pul the points (10,2) and (19,14) into that.

[tex]\frac{14-2}{19-10}[/tex] = [tex]\frac{12}{9}[/tex]

12/9 can be simplified to be 4/3

Answer:

4/3

Step-by-step explanation:

Given,

Two points are (10,2) and (19,14)

To find the slope of the line passing through these points.

Answer:

MODE is the number which appears most often in a set of numbers. Here no number is repeated. So, there is no MODE

｡☆✼★ ━━━━━━━━━━━━━━  ☾  

As the other user stated, the mode is the value that appears the most

Simply look for which colour has the most number of flowers

Thus, the mode would be "yellow"

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Stay Brainly! ヅ    

- Ally ✧    

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Answer:

99°

Step-by-step explanation:

We know that angles on a straight line add up to 180° so we can set up an equation to find the value of x.

In an equation it's important to do the operation you want to on both sides because if you do an operation on one side only you will end up changing the whole equation and that will make the value of x wrong so its an important rule to remember.

8x - 13 + 7x - 17 = 180

→ Simplify

15x - 30 = 180

→ Add 30 to both sides to isolate 15x

15x = 210

→ Divide both sides by 15 to isolate x

x = 14

But we are not finished, the specifies us to find ∠MON and we have only found the value of x so we have to substitute x back into 8x - 13 to find the value of ∠MON

8x - 13

→ Substitute x = 14 back into into the expression

8 × 14 - 13

→ Simplify

112 - 13 = 99

So the value of ∠MON is 99°

Answer:

[tex]x^{2}y-z^{2}[/tex]

Step-by-step explanation:

Apply [tex](a+b)(a-b) = a^{2} -b^{2}[/tex] where [tex]x\sqrt{y}[/tex] is [tex]a[/tex] and [tex]z[/tex] is [tex]b[/tex].

[tex](x\sqrt{y} )^{2}-z^{2}[/tex]

[tex](x\sqrt{y} )^{2}=x^{2}y[/tex]

[tex]x^{2}y-z^{2}[/tex]

Hope this helps! :]

I really want to thank you for the answer and explanation.

Answer:

(5x + 1)x(2x^2+1)

Step-by-step explanation:

Answer:

the answer is -11

Step-by-step explanation:

yeah the answer is - 11

Answer:

Where are the expressions?

Answer:

48+12=60

60÷2=30

your answer is 30+30

Answer:

[tex]B. \sqrt[4]{7} [/tex]

[tex] {7}^{ \frac{1}{4} } = \sqrt[4]{7} [/tex]

Answer:

b

Step-by-step explanation:

teérrt

Answer:

21 square cm

Step-by-step explanation:

[tex] b_1 = 9 \:cm, \: b_2 = 5 \:cm, \: h = 3\: cm\\

Area\: of\: trapezium\\

= \frac{1}{2} (b_1 +b_2)\times h\\\\

= \frac{1}{2} (9 +5)\times 3\\\\

= \frac{1}{2} \times 14 \times 3\\\\

= 7 \times 3\\\\

= 21 \: cm^2 [/tex]

Answer:

-$32

Step-by-step explanation:

Given that

Overdraft fee = $30

Preston Balance = $50

Total expenditure = $52

As per the given question the solution of new balance is provided below:-

To reach the new balance of Presont's first we need to find out the overdraft balance which is as follows:-

Overdraft balance = Balance - Total expenditure

= $50 - $52

= -$2

Since there is a balance of $50 but Pretson purchased for $52 value that results -$2 overdraft balance. In order to determine the new balance we simply added the overdraft fee and overdraft balance which is shown in negative sign.

Now according to the question the New balance of Presont's = Overdraft balance - overdraft fee

= -$2 - $30

= -$32

Answer:

x=4 or x=-10

Step-by-step explanation:

x² + 6x = 40

x² + 6x - 40 = 40 - 40

x² + 6x - 40 = 0

Use quadratic formula:[tex]\frac{b-+\sqrt{b^{2} -4ac} }{2a}[/tex]

a=1 , b=6 , c= -40

[tex]\frac{-(6)-+\sqrt{6^{2} -4.1.(-40)} }{2.1}[/tex]

[tex]\frac{-(6)-+\sqrt{196} }{2.1}[/tex]

x=4 or x=-10

Hope this helps ^-^

The quantity of paint will be 2 litres for 20 square meters area.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Gia is painting her wall. 1 litre of paint can cover 10 square meters. She has a rectangular wall that measures 4 meters by 5 meters.

The total area of the wall = 4 x 5 = 20 square meters

Paint for 10 square meters area = 1 litre

Paint for 20 square meters area =  1 x 2 = 2 liters

Therefore, the quantity of paint will be 2 litres for 20 square meters area.

To know more about an expression follow

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Answer:

No

Step-by-step explanation:

Answer: NO

Step-by-step explanation: Put in (-7) in place of x, and (7) in place of y in the equation If the equation does not equal -2, it is not a solution. If it does equal -2, it is a solution.

(-7,7)

6x+9y=-2

Plug in -7 for x and 7 for y.

6(-7)+9(7)=-2?

Solve the equation.

-42+63= -21

So, (-7,7) is not a solution to this equation.

Mark me brainliest! :D

Answer:

D.

Step-by-step explanation:

10 - 2 - 4 - 2 - 1 since he went to dump all those so you have to subtract them from the original amount.

Answer:

undefined

x= no solutions

Step-by-step explanation:

x-4=5+x

-4=5

undefined

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x=3/14

Decimal Form:

x=0.2142857

Step-by-step explanation:

Answer:

$44,000

Step-by-step explanation:

The statement indicates that Sandra saves 9% of her salary and she saved $4,050 this year. That means that the 9% of her salary, x, is equal to $4,050. You can write the following:

x*0.09= 4,050

Now, you can isolate x to find her salary this year:

x=4,050/0.09= 45,000

Then, you have that this year salary was 1000 more than in her previous year. As you have found her salary for this year, you can subtract 1,000 from it to find her salary in the previous year:

45,000-1,000= 44,000

According to this, the answer is that her salary in the previous year was $44,000.

Step-by-step explanation:

So

Total money = 20

Entrance fee = 1.75

Food = 2.50

Ride = 1.05

Amount spend = 1.75 + 2.05 = 3.8

Left for rides = 20 - 3.8 = 16.2

So rides = 16.2 ÷ 1.05 = 15

I think atleast 15 rides

Answer:

1.5 is your answer

Step-by-step explanation:

Answer:

5.0625

Step-by-step explanation:

Answer:

h = 6 cm

Step-by-step explanation:

The volume (V) of a pyramid is calculated as

V = [tex]\frac{1}{3}[/tex] Ah ( A is the area of base and h the height )

Here A = 3 × 2 = 6 cm² and V = 12 , thus

[tex]\frac{1}{3}[/tex] × 6 × h = 12, that is

2h = 12 ( divide both sides by 2 )

h = 6 cm

Answer:

The first one and the third one.

Step-by-step explanation:

I did the Plato Math

Answer:

[tex]C,Y_{envelope}(x,t), Y_{carrier}(x,t)=2A, \cos ((k_1-k_2)x/2-(\omega_1 -\omega_2)t / 2 ) , \sin ((k_1+k_2)x / 2 - (\omega_1 +\omega_2)t / 2 )[/tex]

Step-by-step explanation:

Given

[tex]Y_1(x,t)=A \sin(K_1x- \omega _1 t)\\\\Y_2(x,t)=A \sin(K_2x- \omega _2 t)[/tex]

using a trigonometrical identity

sin p + sin q = 2 sin ( p+q/2) cos ( p-q/2)

and here the condition is

the choice is in between sinax and cosax

where a > b

so we get using above equation

[tex]C,Y_{envelope}(x,t), Y_{carrier}(x,t)=2A, \cos ((k_1-k_2)x/2-(\omega_1 -\omega_2)t / 2 ) , \sin ((k_1+k_2)x / 2 - (\omega_1 +\omega_2)t / 2 )[/tex]

Answer:

9u+5

Step-by-step explanation:

Answer:

5(9+u)

Step-by-step explanation:

Answer:

12 miles

Step-by-step explanation:

2.25+3.50x=44.25

3.50x=42

x=12

Answer:

I think it's (2,9)

Step-by-step explanation:

Answer:

(2, 9)

Step-by-step explanation:

You can see at the end it says 6. You would start with point Z(2, 3) and move up 6 units. This will leave you with (2, 9).

Answer:

area of the figure ≈61.23 cm² to the nearest hundredth

Step-by-step explanation:

To find the area of the figure, we will follow the steps below;

Looking at the figure, we will see that the figure comprises of both semi-circle and a parallelogram

area of figure = area of semicircle + area of parallelogram

first, we will find the area of the semi-circle

area of a semi-circle = πr² /2

from the diagram given, diameter = 7cm

but diameter = 2r, this implies that radius r = d/2, hence radius r = 7/2 = 3.5 cm

π = 3.14

Lets insert the values into the formula

area of a semi-circle = πr² /2

                                    =3.14×3.5² /2

                                    =3.14×12.25 /2

                                     =19.2325 cm²

Area of a parallelogram = b×h

where b = base and h = height

from the figure given, base b = 7cm   and height h = 6 cm

Lets insert the values into the formula

Area of a parallelogram = b×h

                                       = 7×6

                                       =42 cm²

area of the figure = area of semicircle + area of parallelogram

                                =19.2325 cm²   +   42 cm²

                                =61.2325 cm²

                                ≈61.23 cm² to the nearest hundredth

area of the figure ≈61.23 cm² to the nearest hundredth

Answer:

-244

Step-by-step explanation:

You are multiplying by -3.

-4+12+(-36)+108+(-324)= -244

Answer:

Step-by-step explanation:

Remember that a rectangle is a quadrilateral which have its opposite sides equal and parallel, and all its internal angles are 90°. So, those are all the characteristics we need to demonstrate.

Additionally, the diagonals of a rectangle bisect each other.

Having said that, the choices A, C and D can help to demontrate that the figure is a rectangle.

You prove that abcd is a rectangle by the options A, Cand D.

We have given that figure ABCD

we have to determine that ABCD is a rectangle.

Remember that a rectangle is a quadrilateral which have its opposite sides equal and parallel, and all its internal angles are 90°.

So, those are all the characteristics we need to demonstrate.

A rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal or a parallelogram containing a right angle. A rectangle with four sides of equal length is a square.

Additionally, the diagonals of a rectangle bisect each other.

Having said that, choices A, C, and D can help to demonstrate that the figure is a rectangle.

To learn more about the rectangle visit:

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Answer:

$66.70 for 10 sets

Step-by-step explanation:

Multiply the cost of 1 set by the number of sets wanted

$6.67 * 10

66.70 for 10 sets

Answer:

$66.70

Step-by-step explanation:

In order to figure out the cost of 10 sets of napkins, you have to multiply the cost of one set by 10.