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o-na [289]
3 years ago
12

ali sorced 66 and 72 marks respectively. for his two tests what is the lowest marks he must have sorced for his third test if an

average score of at least 75 is required to qualify for a bonus prize
Mathematics
1 answer:
dimaraw [331]3 years ago
6 0

Answer:

87

Step-by-step explanation:

66 + 72 + 87 = 225

225 / 3 = 75

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The value of a professor basketball players autograph rose 30% in the las year.It is now worth $286.00. What was it worth a year
sineoko [7]

Answer:

$220 dollars

Step-by-step explanation:

a = p * w (the percentage formula)

subsitute. It rose by 30 % since last year so you're going to put 1.30 (30% -> 0.30 then add 1)

286 = 1.30 * w

solve.

w = 220

3 0
3 years ago
HELPP<br> What is the size of the label in square cm??
elena55 [62]

Answer:

226.19

Step-by-step explanation:

area of a cylinder is 2 times pi times radius time height plus 2 times pi times radius squared

radius=6/2=3

height=9

substitute in your values and get 226.19cm squared

4 0
3 years ago
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Estimate 1.3 - (-2.5)
Helen [10]

Answer:

3.8

Step-by-step explanation:

8 0
4 years ago
Indicate whether the function represents an exponential growth or decay.
svetoff [14.1K]

Answer:

1) decay

2) growth

3) growth

Step-by-step explanation:

A generic exponential function can be written as:

f(x) = A*(r)^x

Where:

A is the initial amount of something.

r is the rate of growth.

x is the variable, usually, represents time.

if r > 1, we have an exponential growth.

if r < 1, we have an exponential decay.

1) f(x) = (3/4)^x

in this case we have:

A = 1

r = (3/4) = 0.75

Clearly, r < 1.

Then this is an exponential decay.

2) f(x) = (1/6)*4^x

In this case we have:

A = (1/6)

r = 4

Here we have r > 1.

Then this is an exponential growth.

3) f(x) = (1/4)*(5/2)^x

in this case we have:

A = 1/4

r = 5/2 = 2.5

here we have r > 1, then this is an exponential growth.

8 0
3 years ago
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Tcecarenko [31]

Answer:

shouldn't there be a pictures with this Question

Step-by-step explanation:

3 0
3 years ago
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