can someone help please? :< brainliest to whoever answers first(50 points) correct answers please! :(

Answer:

b

Step-by-step explanation:

ADC= CBA

Answer:

choice 4) angle ACD congruent to angle CAB

Answer:

Step-by-step explanation:

Problem One

Perimeter is in meters not square meters. The equation is

2*(6.8+x) + 2*12.5= 47                Remove the brackets. Combine like terms  

13.6 + 2x + 25 = 47

38.6 + 2x = 47                            Subtract 38.5 from both sides

2x = 47 - 38.6  

2x = 8.4                                      Divide by 2

x = 4.2

Answer D

Problem 2

This problem is asking that you calculate the perimeter of a swimming pool.

The two semicircles on the ends make a whole circle.

The diameter of the semicircles is obtained from the difference of the two given lengths.

The rectangle has a length of 12. The length of the rectangle and the 2 semicircles is 16. The difference is 4. You could divide this by 2 to get the radius. I would just leave it as the diameter.

So the perimeter is pi*d + 2 * 12 [there are 2 lengths]

Perimeter = 4*pi + 24

Perimeter = 12.56 + 24

Perimeter = 36.56

Answer A

Problem 3

This is the circle inside the square.

The radius of the circle = 9

The diameter of the circle and the length of square's side = 2*9 = 18

The area of the square = s^2  where s = 18

The area of the square = 18^2 = 324

The area of the circle = pi * 9^2 = 3.24 * 81 = 251.34

The area of the Shaded area = 324 - 251.34 = 69.66

Answer C

Problem 4

b1 = 5

b2 = 11.5

h = 4.5

Formula

Area = (b1 + b2 ) * 4.5/2

Area =  (5 + 11.5) * 4.5 /2

Area = 16.5 * 4.5 / 2

Area = 74.25/2

Area = 37.125

Answer D

Answer:

300

Step-by-step explanation:

120 is 40%

40% plus 40$ = 120+120=240

20% left.

120/2=60

240+60=300

300=answer

Answer:

unlikely

Step-by-step explanation:

unlikely because 3/6 colours are orange and 2/6 is white so the remaining 1/6 is not possible as much as the other 2

Answer:

the tree will be 11.04 feet tall

Step-by-step explanation:

4 x 0.22 (22%) = 0.88

every year it grows 0.88 foot.

0.88 x 8 = 7.04

4 + 7.04 = 11.04 feet tall

sorry if this is wrong!

The height of the tree after 8 years will be 11.04 feet.

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 a  4-foot tree was planted in 1984. The tree grows continuously by 22% each year from this point forward.

The height after 8 years will be calculated as:-

4 x 0.22 (22%) = 0.88

Every year it grows 0.88 feet.

0.88 x 8 = 7.04

4 + 7.04 = 11.04 feet tall

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Answer:

x=4-3y

Step-by-step explanation:

Answer:

Step-by-step explanation:

Draw the altitude from the vertex angle to the base. You have two congruent, right triangles. The hypotenuse of each triangle is

√[(56/2)²+45²] = √[28²+45²] = √2809 = 53 mm

perimeter of larger triangle = 2×53 + 56 = 162 mm

[tex]\huge\text{Hey there!}[/tex]

[tex]\text{How to \bf{calculate midpoint}}?[/tex]

[tex]\large\text{You can calculate the DISTANCE BETWEEN TWO given END POINTS}\\\large\text{and DIVIDE its RESULT by 2}[/tex]

[tex]\large\text{Here is the formula: }\mathsf{(\dfrac{x_1 + x_2}{2}, \dfrac{y_1+y_2}{2} )}[/tex]

[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

[tex]\large\text{Use an example of it}\downarrow[/tex]

Answer:

110

Step-by-step explanation:

it cost 110 all together because if you add 17 and 93 that's what it is which was 110. I got 17 from when I add 5 + 12 and I added 85 + 8 that's how I got the answer

Answer:

16

Step-by-step explanation:

Answer:

height = 4.5 cm

Step-by-step explanation:

9 liters = 9000 cm^3

(50x40xH) = 9000

H = 4.5 cm

Answer:

15

Step-by-step explanation:

Answer:

-3 times

Step-by-step explanation:

slope is -6 so -6/2=-3

Answer:

he's running 4/19 miles per minute or 12.6 miles per hour

Step-by-step explanation:

he is running 3 miles north, 4 miles east, and 5 miles southwest, a total of 12 miles

d = rt

12 = 57r

r = 12/57 or 4/19 (simplest form)

this is 4/19 miles per minute, multiply by 60 and it's about 12.6 miles per hour

The percent decrease in the value of the car is 65.6%.

Given that,

The purchase value of the car is $32,000.

The worth of the car is now $5,000 that should be lower than the half of purchased value i.e.

= 50% of $32,000 - $5,000

= $16,000 - $5,000

= $11,000

Now the percentage of decrease in the value of the car is

[tex]= \frac {(\$32,000 - \$11,000)}{\$32,000} \\\\= \frac{\$21,000}{\$32,000}[/tex]

= 65.6%

Therefore we can conclude that the percentage of decrease in the value of the car is 65.6%.

Therefore, all the other options are incorrect.

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Answer:?

Step-by-step explanation:

Answer:48x^5

Step-by-step explanation:

− b ± √ b 2 − 4 ( a c ) /2 a 2

± √ ( − 2 ) 2 − 4 ⋅ ( 6 .− 3 ) 2 ⋅ 6

Answer:

h = 13ft

Step-by-step explanation:

We can assume that the triangles are similar, so:

5 ft is to 26 ft as 2.5 ft is to h ft.

Which can be set up like this:

[tex]\frac{5}{2.5}=\frac{26}{h}[/tex]

We can cross multiply:

5h = (2.5) (26)

5h = 65

h = 13ft

Answer:

only a is the right triangle

Step-by-step explanation:

only a is the right triangle because it satisfies the pythagorean theorem.

a.)

[tex]c ^{2} = a ^{2} + b ^{2} \\ 63 = 25 + 38\\ 63 = 63 \\ true[/tex]

while b,

b.)

[tex]c ^{2} = a ^{2} + b ^{2} \\ 60 = 25 + 38 \\ 60 = 63 \\ false[/tex]

Answer:

1250

Step-by-step explanation:

25/40=x/2000

x=1250

Answer:

Trippin trippin

Step-by-step explanation:

Like frfr Trippin trippin

Answer:

the answer that i found out was 2.646

Step-by-step explanation:

A = (4,0) B = (0,3)

length of segment = √(x1-x2)^2 + (y1+y2)^2

√(4-0)^2 + (0-3) ^2

= √16+(-9)

=√7

=2.646

im not sure did I do it right

im not sure did I do it rightsry if I did it wrong

Answer:

The change is negative, since the volume in the final state is smaller than the volume in the initial state. 2.25 We express V for the ideal gas as a function of T , p and n: V (T , p, n) = ... each smooth part of the curve and add the integrals, used up yearly by living organisms, which means that even if the oxygen supply was.

Vt = 0.3t + 5 is a function that depicts the volume, V(t), of oxygen in the cylinder after introducing the gas for t seconds.

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.

Given, Oxygen is being added to a canister that originally contained 5 cubic feet of the gas at the rate of 0.3 cubic feet per second.

Let V is the volume of oxygen t be the time in seconds and Vt be the changing volume at time t.

From the formula of volume of a cylinder (V) = π r²h

The initial volume of gas = 5 feet

gas added at the rate = 0.3 feet per second

Thus equation for volume = 5 + 0.3t

Vt = 0.3t + 5

therefore, a function that represents the volume, V(t), of oxygen in the cylinder after t seconds of adding the gas is Vt = 0.3t + 5.

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Answer:

( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )

Step-by-step explanation:

[tex]3x^{2}[/tex] - 2[tex]x[/tex] - 5

(Multiply 3 from [tex]3x^{2}[/tex] with -5)

Product = -15

Sum = -2

(3 times - 5 gives the product '-15' and 3 plus -5 gives the sum -2)

[tex]3x^{2}[/tex] + 3[tex]x[/tex] - 5

3[tex]x[/tex] ( [tex]x[/tex]  + 1 ) - 5 ( [tex]x[/tex] + 1 )

= ( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )

Answer:

157

Step-by-step explanation:

C = [tex]\pi[/tex] x diameter.

C = 3.14 x 50

C = 157 units