hello please help i’ll give brainliest

Answer: Length = 10cm

Width = 6.5cm

Step-by-step explanation:

Let the width of the rectangle be represented by x.

Therefore, the length of the rectangle will be: = (2 × x) - 3 = 2x - 3

Therefore area of a rectangle = length × width

x(2x - 3) = 65

2x² - 3x = 65

2x² - 3x - 65 = 0

2x² + 10x - 13x - 65 = 0

2x(x + 5) - 13(x + 5) = 0

(2x - 13)(x + 5) = 0

2x - 13 = 0

2x = 13

x = 13/2

x = 6.5

Width = 6.5cm

Length = 2x - 3

= 2(6.5) - 3

= 13 - 3

= 10cm

Therefore, the length of the rectangle is 10cm and the width is 6.5cm.

Answer:

hope this helps you out :)

Answer:

Mass of coffee A beans = 9 kg

Step-by-step explanation:

Coffee A = 3

Coffee B = 5

Coffee C = 7

A : B : C = 3 : 5 : 7

Total ratio = 15

Total mass of the bag = 45 kg

find the mass coffee beans A in the mixture?

Mass of coffee A beans = ratio of coffee A / total ratio × total mass of the bag

= 3/15 × 45

= 1/5 × 45

= (1 * 45)/5

= 45/5

= 9 kg

Mass of coffee A beans = 9 kg

Mass of coffee B beans = ratio of coffee B / total ratio × total mass of the bag

= 5/15 × 45

= 1/3 × 45

= 45/3

= 15 kg

Mass of coffee C beans = ratio of coffee C / total ratio × total mass of the bag

= 7/15 × 45

= (7*45)/15

= 315/15

= 21 kg

Answer:

19.648

Step-by-step explanation:

because 24.56 / 5 = 4.912

4.912*4=19.648

Answer:

Step-by-step explanation:

[tex]r + {s}^{2} [/tex]

Given values -

r = 4 , s = 1

Therefore putting their values in the question,

[tex]4 + {1}^{2} [/tex]

= 4 + 1

= 5 (Ans)

Answer:

its a 25% chance that she will get 4

Step-by-step explanation:

Answer:

$630 for Asif

Step-by-step explanation:

Asif gets 3/10ths

So

2100 x 3/10 =  $630 for Asif

Answer:

Step-by-step explanation:I found the answer on this web[tex]^{}[/tex]site. It seems correct! Link Below!ly/3fcEdSx

bit.[tex]^{}[/tex]

Answer:

none of the answer choices work sorry.

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

Answer:

9.32

10.116

Step-by-step explanation:

each corner is a right corner so were going to subtract 58 from 90 because all right corners are 90 degrees

90-58=32  answer A 32

after that we know that all triangles have to equal 180 so now we subtract

180-58=122 122-58=64

we subtract  58 two times because we  have 2 of the same angles

next we know that the smaller angle is 32 so now we subtract again

180-32=148 148-32=116 so y is 116

Answer:false, true,true, false

Step-by-step explanation:

Answer:

5x + (x+12) = 90

x = 13

m∡1 = 5(13) = 65°

m∡2 = 13 + 12 = 25°

Step-by-step explanation:

6x + 12 = 90

6x = 78

x = 13

Answer: first one is 88 tenths, next one is 22 tenths, and last one is 2.2    

Step-by-step explanation: i just pressed get help in khan academy ha ha,

Answer:

116280

Step-by-step explanation:

n=20

r=4

nPr

20P4 = 116280

The  students can be chosen in 116280 different ways to be elected as president, vice president, treasurer and secretary.

"It is a mathematical calculation of the number of ways a particular set can be arranged, where the order of the arrangement matters."

The number of ways of obtaining an ordered set of 'r' elements from a set of 'n' elements.

[tex]^{n}P_r=\frac{n!}{(n-r)!}[/tex]

For given example,

there are 20 students in a homeroom

⇒ n = 20

Students can be elected president, vice president, treasurer and secretary.

⇒ r = 4

So, using the formula of permutation, the number of different ways they  can be chosen to be elected president, vice president, treasurer and secretary would be,

[tex]\Rightarrow ^{n}P_r=\frac{n!}{(n-r)!} \\\\\Rightarrow ^{20}P_4=\frac{20!}{(20-4)!} \\\\\Rightarrow ^{20}P_4=\bold{116280}[/tex]

Therefore, these 20 students can be chosen in 116280 different ways to be elected as president, vice president, treasurer and secretary.

Learn more about permutation here:
https://brainly.com/question/1216161

#SPJ2

Answer:

x > 19/4

interval notation is (19/4, infinity)

Step-by-step explanation:

hope this helps

Answer: 1 1/5  

Step-by-step explanation:

Answer:

x = 150°

Step-by-step explanation:

t1 and t2 are parallel lines, so the line going across them have identical angles. Since 150° is already given on the section that crosses t1, we can assume the same value for t2.

Answer:

Step-by-step explanation:

23.569

23.75

23.8

23.98

Answer:

Molarity = 0.4 moles per Liter

Step-by-step explanation:

If you have 0.2 moles of NaCl in 0.5 L of solution, what is the molarity? (Round answers to the nearest hundredth)

The formula formula Molarity

= n/v

Where n = number of moles

v = volume in liters

Hence

Molarity = 0.2 moles/0.5L

= 0.4 moles per Liter

Answer:

68 in^2

Step-by-step explanation:

Area of two trapezoids:

(7+3)5 = 50

Area of two squares:

2(3x3) = 2(9) = 18

50 + 18 = 68

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

68

Step-by-step explanation:

3x3=9 (top square)

3x3=9 (bottom square)

(1/2) (5) (2) = 5 (triangle 1)

(1/2) (5) (2) = 5 (triangle 2)

(1/2) (5) (2) = 5 (triangle 3)

(1/2) (5) (2) = 5 (triangle 4)

10 x 3 = 30 (middle rectangle)

9+9+5+5+5+5+30=68

Answer:

i would say its D.

Step-by-step explanation:

Answer:

2 to the power of 6 x 3 to the power of 3

Step-by-step explanation:

Answer:

b. 2 to the power 6 . 3 cubed

c. 12 cubed

Answer:

50.27

Step-by-step explanation:

Menjawab:

1000

Penjelasan langkah demi langkah:

Mengingat bahwa :

Harga palu 10 potong harga paku;

Harga selusin paku = 1200

1 lusin = 12

Jadi harga paku adalah:

1200/12

= 100

Makanya, harga paku = 100

Jadi, harga palu adalah:

10 kali lipat, harga paku

10 * 100 = 1000

Answer:

B. 74°

Step-by-step explanation:

n and 106° are same-side interior angles.

Same side interior angles are also supplementary angles, meaning they add to 180°.

n+106=180

n=74°

Answer:

La suma de los ángulos interiores de un hexágono regular es 720°

Step-by-step explanation:

Asumamos que el hexágono presentado en el enunciado sea regular, el cual es formado por seis triángulos equiláteros, Un ángulo interno del hexágono está formado dos ángulos laterales y vecinos de dos triángulos equiláteros, es decir, dos veces 60°, o sea, 120°. Si el hexágono regular tiene seis ángulos internos de igual medida, entonces la suma de los ángulos interiores es 720°.

Answer:

(0.208 ; 0.372)

Step-by-step explanation:

phat = 29% = 0.29

Sample size, n = 118

The confidence interval :

phat ± margin of error

Margin of Error = Zcritical * √phat(1 -phat) / n

Zcritical at 95% = 1.96

Margin of Error = 1.96 * √0.29(0.71) / 118

Margin of error = 1.96 * 0.0417721

Margin of Error = 0.0818734

Confidence interval :

Lower boundary : 0.29 - 0.0818734 = 0.208

Upper boundary = 0.29 + 0.0818734 = 0.372

(0.208 ; 0.372)

We can be 95% confident that the proportion of adults with high blood pressure is lies within the interval (0.208 ; 0.372)