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Nata [24]
3 years ago
6

the temperature dropped by 7.f each hour from 5:00 am to 9:00 am. What was the beginning temperature at 5:00 am if the temperatu

re at 9:00 am was -10.f
Mathematics
1 answer:
Sati [7]3 years ago
6 0
4 * 7 = 28.
28 + (-10) = 18
Therefore, the answer is 18.

If you want to check this, you can subtract 7 from 18 four times.
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lutik1710 [3]
The answer is 6 positive tiles.
4 0
3 years ago
A dolphin jumped up out of the water and back into the water in a parabolic path. (H) height (t) seconds . H=-8(t-0.5)^2+2 . How
tigry1 [53]

Answer:

4 seconds

Step-by-step explanation:

using the vertex formula of a quadratic,

a(x-h)^{2} + k, where (h,k) is the vertex

h = -8(t-0.5)^{2}+2    h is height and t is time in seconds

the vertex (maximum height) of the dolphin is (h,k) or (0.5, 2)  

Height of 1/2

time of 2 seconds

it will take 2 additional seconds to reach the water again.

this can also be solved using quadratic equation, but since it was already set up in vertex form, i'd use that.

4 0
2 years ago
X^2-18x-6. complete the square ​
vlabodo [156]

Answer:

(x-9)^2-87

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help me, I know it’s not the first one but I think it’s the last one. Can somebody please confirm or deny?
GaryK [48]

Answer:

B. 2.2π m² : 3.2π m²

Step-by-step explanation:

Given:

Slant height (l) = 2.2 m

Diameter (d) = 2 m

Radius (r) = ½(2) = 1 m

Required:

Lateral area and surface area

Solution:

✔️Formula for lateral area of a cone = πrl

Plug in the values

Lateral area of the cone = π*1*2.2

Lateral area = 2.2π m²

✔️ Formula for surface area of a cone = πr(l + r)

Plug in the values

Surface area of the cone = π*1(2.2 + 1)

Surface area = π(3.2)

Surface area = 3.2π m²

The answer would therefore be:

2.2π m² : 3.2π m²

7 0
2 years ago
How do you interpret the residual?
Vanyuwa [196]

Answer: To find a residual you must take the predicted value and subtract it from the measured value.

Step-by-step explanation:

7 0
2 years ago
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