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hichkok12 [17]
3 years ago
8

Keenan has 28 CDs and 44 DVDs. What is the ratio of DVDs to CDs? 28:1 11:7 7:11 1:28

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0
DVD:CD
44:28
11:7
The order is important!
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The ratio of boys to girls in Ella’s grade is 3 to 4. The ratio of boys to girls in Minh’s grade is 4 to 5. Each grade has a tot
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(20:4)x3=15 (Ellas grade)
(20:5)x4=16 (Minhs grade)
5 0
3 years ago
Each base angle of an isosceles triangle measures 55° 30'. Each of the congruent sides is 10 centimeters long. Estimate the foll
kogti [31]

Answer:

55 deg 30 Minutes = 55.5 degrees  

sin = opp/hyp  

sin(55.5) = altitude/10  

Altitude = 10*sin(55.5)  

Altitude = 10 * sin(55.5) = 8.241261886  

Rounded to nearest 10th  

Altitude = 8.2 cm  

b. for base use Low of Cosines  

Let C = base  

Side A and B = length 10 Cm  

c^2 = 2*a^2 -2a^2*cos(<C)  

<C = 180 - 2*55.5 = 180 -111 = 69 degrees  

c = sqrt ( 2a^2 - 2a^2*cos(<C)  

c = sqrt ( 2*100- 200*cos(69))  

c = sqrt (200 - 200*cos(69) ) = 11.32812474  

Answer base  

c = 11.3 cms  

c.  

Area = (1/2)*b * h  

Area = (1/2)*(answer a * answer b)  

Area = (1/2)* 11.32812474* 8.241261886 = 46.67902132  

Area = 46.7 (rounded)  

Area = ( 1/2) * a*b*sin(<C) = (1/2)*10*10*sin(69) =  

Area = 50* sin(69) = 46.67902132  

Area = 46.7 (rounded)

Step-by-step explanation:

3 0
3 years ago
Let / f(x)= -5x + 3 and g(x) = 6x - 2. Find f*g and its domain.
lina2011 [118]

Answer:

The correct answer is:  Option 3.

Step-by-step explanation:

To begin the problem asks to find f· g which can be defined as [f*g](x). Now we are given that:

f(x)=-5x+3\\g(x)=6x-2

So now we need to 'multiply' our two algebraic expressions as follow:

fg(x)=(-5x+3)(6x-2)\\fg(x)=(-5x)(6x) +(-2)(-5x)+(3)(6x)+(3)(-2)\\fg(x)=-30x^2+10x+18x-6\\fg(x)=-30x^2+28x-6 Eqn.(1)

The domain of Eqn. (1) is all real numbers of x.

Which according to the given options , Option 3 is correct.

6 0
4 years ago
Se van a unir dos tramos de cadena: uno mide 0.75 m de largo y el otro 15/100 de metro . ¿Cual será la longitud total ya que est
likoan [24]

Step-by-step explanation:

It is given that,

The length of section 1 is 0.75 m and the length of section 2 is 15/100 m. The total length of the section is equal to the sum of section 1 and section 2. So, we will add them as follows :

l=0.75\ m+\dfrac{15}{100}\ m\\\\\because \dfrac{15}{100}=0.15\\\\l=0.75\ m +0.15\ m\\\\l=0.9\ m

So, the length of the section is 0.9 m or 9/10 m

8 0
4 years ago
PLEASE ANSWER! BRAINLIESTTTT
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8 0
4 years ago
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