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vaieri [72.5K]
4 years ago
11

❤️❤️not sure please help❤️❤️

Mathematics
1 answer:
Tanya [424]4 years ago
8 0
For similar rectangles ratios of  their corresponding sides should be equal.

20/3 = 45/9
6 2/3 = 5    False.
So, this rectangles are  not similar.
So, the answer is False.
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A firecracker shoots up from a hill 145 feet high with an initial speed of 80 feet per second. Using the formula H(t) = -16t2 +
kiruha [24]
145 = -16 t² + 80 t +s
s = ?
v = v0 - at
0 = 80 - at
80 = at
s = 80 t - at²/2
s = 80 t - 80t/2
s = 40 t
Finally: 145 = -16 t² + 80 t + 40 t
16 t² - 120 t + 145 = 0
We will solve this quadratic equation:
t = [120 +√ ( (-120)²- 4 · 16 · 145 )] / 32
t = [120 + √ (14400 - 9280) ] / 32 
t = (120 + 71.55) / 32 = 5.98 ≈ 6 s
Answer:D) 6 seconds
3 0
3 years ago
What is the area of 8/9ft and 2ft
I am Lyosha [343]
The area of 8/9 feet and 2 feet is 1 7/9 feet.
3 0
4 years ago
What is the result of multiplication of complex numbers -square root 3. +i and<br> (cos y + i sin )?
scoray [572]
3. Cost it is a practice that you have a good day and I don’t want you in to the house but you can tt it up and you have to do a
8 0
3 years ago
Write an exponential model given the two points ​(10​,130​) and ​(11​,240​).
enot [183]

Answer:

  y = 130(24/13)^(x -10)

Step-by-step explanation:

The y-value changes by a factor of 240/130 = 24/13 for a unit change in the x-value. This means we can write the function as though it had an initial value of 130 and a growth factor of 24/13, translated 10 units to the right.

  y = 130(24/13)^(x -10)

_____

<em>Additional comment</em>

This can also be written in the form ...

  y = a·e^(kx)

where a=130·(24/13)^(-10) ≈ 0.28266, and k=ln(24/13) ≈ 0.61310

7 0
3 years ago
Mitch has already spent 26 minutes on the phone, and he expects to spend 2 more minutes with every phone call he routes. Write t
fredd [130]

Answer:

minutes spent on phone (t) is directly proportional to the phone calls routed (p)  with equation t =26+2p.

Step-by-step explanation:

Given:

Number of minutes already spent = 26 minutes

Number of minutes expected to spend on each call = 2

Let number of calls routed be 'p'

Also Let number of minutes on the phone be 't'.

We need to find the relationship between phone calls routed and mins spend on the phone.

Solution:

Now we know that;

Total minutes spent on phone is equal to Number of minutes already spent plus Number of minutes expected to spend on each call routes multiplied by number of calls routed.

framing in equation form we get;

t =26+2p

From above we can see that whenever p increases the value of t will increase too .

Hence we can say that minutes spent on phone (t) is directly proportional to the phone calls routed (p)  with equation t =26+2p.

6 0
4 years ago
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