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stepan [7]
3 years ago
10

PLEASE HELP: 97 POINTS + BRAINLIEST

Mathematics
1 answer:
Anton [14]3 years ago
4 0

Answer:

3.77 rounded is 3.8

Step-by-step explanation:

0=-4.9t^2+70

   +4.9t^2

    4.9t^2=70

   divided by 4.9 on (both 4.9 and 70)

 t^2=squareroot 14.285= 3.77

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What is 1/5 + 3/10 ??
Anarel [89]

Answer:

first we will make them like fractions

so 1/5= 2/10 so it will be

2/10+3/10= 5/10

HOPE IT HELPS

mark as brainliest

7 0
3 years ago
The side of the base of a square prism is decreasing at a rate of 7 kilometers per minute and the height of the prism is increas
Ber [7]

Answer:

dV = - 5.73*10⁹ m³/s

Step-by-step explanation:

Question: What is the rate of change of the volume of the prism at that instant (in cubic meters per second) ?

A function can be dependent on one or more variables. The change in the function due to a change in one o its variables is given by the functions derivative with respect to that variable. For functions that are composed of products of its variables, we may use the product rule to determine its derivative.

The volume of a square prism with base a and height h is given by

V = a²h

When the base and height are changing, we have

dV = 2ah(da/dt) +  a²(dh/dt)

Given

a = 4 Km

h = 9 Km

da/dt = - 7 Km/min

dh/dt = 10 Km/min

we have

dV = 2(4 Km)(9 Km)(- 7 Km/min) +  (4 Km)²(10 Km/min)

⇒   dV = - 504 Km³/min + 160 Km³/min = - 344 Km³/min

⇒   dV = - 5.73*10⁹ m³/s

8 0
3 years ago
If two lines have the same slope, they are _______.
Sever21 [200]

Answer:

same slope is parallel lines

Step-by-step explanation:

4 0
3 years ago
The temperature at noon on a winter day was 8°C. At midnight, the temperature had dropped 15°C. What was the temperature at midn
klio [65]
All you have to look at is the word "dropped" and you know it's a subtraction problem. In this case, it would be 8 - 15.

8 - 15 = -7

It would be -7<span>°C at midnight. I hoped this helped! :)</span>
6 0
2 years ago
Find an exponential function that fits the information (hint: putting them in a table may help you see).
Vilka [71]

Answer:

f(x)=8*(3.5)^x

Step-by-step explanation:

2=98

3= 98r

4= 98r^2

5= 98r^3

6= 98r^4

98r^4/98, 98 crosses out and its just r^4. r^4= 14706.125/98

r=3.5

So you plug that in and you get f(x)=8*(3.5)^x

I hope this helped. XD

7 0
3 years ago
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