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Colt1911 [192]
3 years ago
12

How do I find the answer for this equation 20x+15y= 330, when x+y =18

Mathematics
1 answer:
Maru [420]3 years ago
6 0
U divide 330 by 15 and get the quotient then do the same thing to 20 and add the quotients together to solve for x and y
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A beach ball rolls off a cliff and onto the beach. The height, in feet, of the beach ball can be modeled by the function h(t)=64
Karolina [17]

Answer:

rate of change = -32 feet/second

Step-by-step explanation:

h(t) = 64 – 16t2

t = time (seconds)

Look at the start of time where t = 0

h(t) = 64 - 16 * (0) * 2 = 64 feet

Then look at the specified time where t = 1.25 seconds

h(t) = 64 - 16 * (1.25sec) * 2 = 24 feet

rate of change = rate of change y / rate of change x

x = time, y = height

rate of change = (24 - 64) / (1.25 - 0) = -32 feet/second

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3 years ago
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Step-by-step explanation:

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You deposit $2000 each year into an account earning 3% interest compounded annually. How much will you have in the account in 25
kozerog [31]

This is what I get.  Total will be 4187.56 with  Interest 2187.56.   By using the formula: To find amount : A=p (1+r/n)^n×t Where P=2000,r=3%,n=1,t=25 So plug in and solve  A=2000(1+0.03/1)^1×25   To find interest you use formula  A=p+I A=4187.56, p=2000,i= we need to find. 4187.56=2000+I 4187.56-2000=I 2187.56=i

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3 years ago
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Elena L [17]

Answer:

8:6

Step-by-step explanation:

if you have 8 blue gumballs and 6 pink gumballs the ratio is 8:6

8 0
3 years ago
I need help really badly please help me I’ll give brainiest
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Answer:

75%

Step-by-step explanation:

15+15+25+5=60

15/60=25%

100%-25% = 75%

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3 years ago
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