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Kryger [21]
2 years ago
8

Explain how you would use mental math to solve this proportion.

Mathematics
1 answer:
Agata [3.3K]2 years ago
6 0
You can use mental math for this equation because it is fairly easy.

You would use mental math by looking at the equation and thinking, “What is 1/75 times 1/2?” Since you want to find out what w is. Since this is mental math, you would know the answer directly, it is 1/150.

Meaning w = 1/150
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Rond to the nearest cents 0.5239 and 32,048,87219
geniusboy [140]

Answer:

0.5239 would round to 0.52

3,204,887,219 would round to 3,000,000,000

Step-by-step explanation:


6 0
2 years ago
Given the equation 4x2 − 8x + 20 = 0, what are the values of h and k when the equation is written in vertex form a(x − h)2 + k =
GenaCL600 [577]

Answer:

The correct option is:

h = 1, k = 16

Step-by-step explanation:

y=4x^2-8x+20 =0

It is a quadratic formula in standard form:

ax^2+bx+c

where a = 4 , b = -8 and c=20

The vertex form is:

a(x − h)2 + k = 0

h is the axis of symmetry and (h,k) is the vertex.

Calculate h according to the following formula:

h = -b/2a

h= -(-8)/2(4)

h = 8/8

h = 1

Substitute k for y and insert the value of h for x in the standard form:

ax^2+bx+c

k = 4(1)^2+(-8)(1)+20

k = 4-8+20

k=-4+20

k = 16

Thus the correct option is h=1, k=16....

8 0
3 years ago
Linsay is designing a 5-foot-by-8-foot rectangular poster for her art class. She will cover both diagonals of the poster with st
Llana [10]
The answer would be 19
6 0
3 years ago
Six less than 2 times “y” is 34 equation form
wel
2y-6=34 is the needed equation
8 0
3 years ago
Read 2 more answers
Allentown got 2 feet less than twice the amount of snow Georgetown got . Allentown got 3 feet more snow than Georgetown. How man
Mandarinka [93]


x=2y-2

x=y+3

Substitute the second equation into the first

y+3=2y-2

solve for y

y=5

plug into original

x=y+3=5+3=8 or x=2(5)-2=8

Allentown got 8 ft of snow, Georgetown got 5 ft of snow.

4 0
3 years ago
Read 2 more answers
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