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Alinara [238K]
3 years ago
15

Please PLEASE HELP me

Mathematics
2 answers:
Phantasy [73]3 years ago
6 0
It has to be the first one
SCORPION-xisa [38]3 years ago
4 0

Answer:

The answer is option 2.

Step-by-step explanation:

You can find it using Pythagoras Theorem' :

{c}^{2}  =  {a}^{2}  +  {b}^{2}

Let a be 15 units,

Let b be 14 units,

{c}^{2}  =  {15}^{2}  +  {14}^{2}

{c}^{2}  = 421

c =  \sqrt{421}

c = 20.5 \: units \: (3s.f)

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Answer:

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decimal form: 0.6

Step-by-step explanation:

4 0
3 years ago
The linear function f(x) = 0.9x + 79 represents the average test score in your math class, where x is the number of the test tak
Levart [38]

Given:

The linear function for average test score in your math class is

f(x)=0.9x+79

where x is the number of the test taken.

The linear function g(x) in the given table represents the average test score in your science class, where x is the number of the test taken.

To find:

Part A: The test average for your math class after completing test 2.

Part B: The test average for your science class after completing test 2.

Part C: Which class had a higher average after completing test 4?

Solution:

Part A:

We have,

f(x)=0.9x+79

Put x=2 in the above function, to find the test average for your math class after completing test 2.

f(2)=0.9(2)+79

f(2)=1.8+79

f(2)=80.8

Therefore, the test average for your math class after completing test 2 is 80.8.

Part B:

From the given table it is clear that g(x) =79 at x=2.

Therefore, the test average for your science class after completing test 2 is 79.

Part C:

Put x=4 in f(x), to find the test average for your math class after completing test 4.

f(4)=0.9(4)+79

f(4)=3.6+79

f(4)=82.6

From the table it is clear that the value of g(x) is increased by 1 as x is increased by 1. So, the value of function g(x) at x=4 must be 1 more than 80.

g(4)=81

It is clear that,

82.6>81

Therefore, math class had a higher average after completing test 4.

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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=3.5

7 0
3 years ago
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