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DIA [1.3K]
3 years ago
9

If a= 3+√5/2 then find the value of a square+1/a square

Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0
This will help u i hooe

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I need help on #5,6, and 7
denpristay [2]
5.
f(3) = 4 \times 3 - 3 = 12 - 3 = 9
6.
f(0) = 4 \times 0 - 3 = 0 - 3 = - 3
7.
f( - 7) = 4 \times ( - 7) - 3 = - 28 - 3 = - 31
8 0
3 years ago
Please answer asap thank uuuuu
fomenos

Answer:

B

Step-by-step explanation:

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2 years ago
Find a degree
natta225 [31]

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3 years ago
I need help on 19 and 20
svp [43]
Number 19 you are comparing one measurement to another. Since it says 1/2 inch equals 4 ft, we want to find out how many more inches are needed if the given scale was 2/3 = 4 ft. Now lets find a common denominator for both scales stated in inches. We have 2/3 inch and 1/2 inch. Our denominator are the bottom parts of the fraction where we need to find a common factor for the denominator so we can add or subtract fractions. We have a 3 and a 2. You may always use the multiplication between two denominators to find a common factor such as 3 times 2 which equals 6 for both denominators. Now we multiplied the 3 by 2 to get 6 so the top part (numerator needs to be multiplied the the 2 because we changed the bottom part by 2 as well. You should notice that when you reduce your fraction now 4/6 is 2/3. Just a self check example there. As for 1/2 we multiplied a 3 to get 6 for the denominator so we need to multiply the numerator by 3 as well. You now should have 4/6 and 3/6. Since the question asks for how many more inches we need to subtract 4/6 from 3/6 and we get 1/6 inch for our answer.
8 0
3 years ago
Dominic is 72 inches tall and casts a 6o inch shadow his son who is standing next to him cast a 50 inch shadow how tall is his s
Lostsunrise [7]

Dominics son is 45inches tall

<u>Step-by-step explanation:</u>

Let his sons height be 'h'

If Dominic is 72 inches and casts a shadow of 60 inches. His son casts a shadow of 50 inches.

Then We can say that,

h = 50 x (72/60)

h = 45 inches

Dominics son is 45inches tall

3 0
3 years ago
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