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tensa zangetsu [6.8K]
3 years ago
5

The variables x and y vary directly. Use the values to find the constant of proportionality, k . Then write an equation that rel

ates x and y . Write any fractions in simplest form.

Mathematics
1 answer:
Vaselesa [24]3 years ago
7 0

Answer:

k = 9/8

y = 9/8x

Step-by-step explanation:

45/40 = 9/8

To check:

40 * 9/8 = 45

Hope this helps!

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A flagpole casts a 40 foot shadow. The angle of elevation grom the tip of the shadow to the tip of the flagpole is 36". How tall
GuDViN [60]

Answer:

45/22

Step-by-step explanation:

6 0
3 years ago
Rewrite each expression as a polynomial in standard form.a)(x+i)(x-i)b)(x+5i)(x-5i)
Nitella [24]

Answer:

a) x² +1

b) x² +25

Step-by-step explanation:

a) (x+i)(x− i)

   = x² - ( i ) x + ( i ) x - ( i)²

   = x² -  i²                       ∵ i² = -1

   = x² -  (-1)

   = x² +1

b) (x+5 i)(x− 5i)

 = x² - ( 5 i ) x + ( 5 i ) x - ( 5 i)²

   = x² - 25 i²                       ∵ i² = -1

   = x² -  25(-1)

   = x² +25

we can also solve

using identity

   (a + b)(a - b) = a² - b²

   = (x+5 i)(x− 5i)    

   = x² - (5 i)²

   = x² - 25 i²

   = x² +25

8 0
3 years ago
Please help it’s the last question I have left until I can turn this in please answer ASAP if possible
telo118 [61]

Answer:

i cant see

Step-by-step explanation:

5 0
3 years ago
Pls explain super confused <br> Thx
eimsori [14]
3+2•6/3
first you multiply the 2 and 6 on the top to get 12
so now it’s
3+12/3
now add the 12 and 3
15/3
now divide
so your answer is 5
7 0
3 years ago
Answer this and I’ll make you Brainly
Gnesinka [82]

Answer:

A=750

Step-by-step explanation:

If L=50 and W=15, you multiply them together to get 750.

4 0
3 years ago
Read 2 more answers
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