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Slav-nsk [51]
3 years ago
15

20 Points pls Help !

Mathematics
1 answer:
nekit [7.7K]3 years ago
4 0

Answer:5 i think maybe sorry if wrong

Step-by-step explanation:

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This is all-so hard.
seropon [69]
One

the m is 4

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3 years ago
In a car lot, the ratio of the number of new cars to the number of preowned cars is 6 to 5. The total number of new and preowned
Mandarinka [93]
So the lot has (6/(6+5))*100 percent of new cars and 66*(6/11)*100 percent = 36 new cars before the sale, hence 66-36 =30 preowned cars before sale. After the sale it’s 32 new cars and 28 preowned so 32/28 makes it 8/7
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3 years ago
The solution to the equation log2x + log2(x – 6) = 4 is x =
GenaCL600 [577]

Answer:

Value of x=8

Step-by-step explanation:

Given : log_2x+log_2(x-6)=4          

To find : The solution to the equation given

Solution :

Step 1- Write the given expression

log_2x+log_2(x-6)=4  

Step 2 - Using logarithmic laws

log_{b}x+log_by=log_bxy

log_2(x)(x-6)=4  

Step 3 - To remove log-base 2, we need to raise the left and right hand terms to power 2.

(x)(x-6)=2^4  

x^2-6x-16=0  

Step 4 - Solve the quadratic equation

x^2-8x+2x-16=0  

x(x-8)+2(x-8)=0  

(x-8)(x+2)=0  

Either x=8 or x=-2

We neglect x=-2 because negative value is not defined in log.

Value of x=8

6 0
4 years ago
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Please please help me find the volume and surface area i’ll give brainliest
kondor19780726 [428]

Answer:

Area: 272ft²

Volume = 82.6236447189ft³

Step-by-step explanation:

AREA

The area of a square pyramid is found by combining the area of the base and the area of the triangular faces:

Area of base = area of square = L² = 8² = 16ft²

Area of one triangular face = (1/2)bh = (1/2)(8)(16) = 64ft²

There are four triangular faces so the total area = 16+4(64)= 16+256= 272 ft²

VOLUME

The volume of a square pyramid = (a²)(h/3), where a is the length of the base and h is the length from the top of the pyramid to the middle of the square.

We are given a, but not h. To find h, we must imagine a right-angled triangle within the pyramid, where 16ft is the hypotenuse, h is the height and the base is half of a (since the base is a square and the distance is from the edge to the middle). We can then use pythagorus's theorem to find h:

A²=B²+C²

16²=(8/2)²+h²

256=16+h²

h=√240

h=15.4919333848ft

Knowing h, we can find the volume:

Volume = (a²)(h/3)

Volume = (8²)(15.4919333848/3)

Volume = (16)(5.16397779493)

Volume = 82.6236447189ft³

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3 years ago
Use the Distributive Property to simplify -4(-a + 2)
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Answer:

4a-8

Step-by-step explanation:

(-4×a)+(-4×2)

Distributive property

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