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SpyIntel [72]
3 years ago
6

Calculate the length of the unknown side of this right angled triangle

Mathematics
1 answer:
Murrr4er [49]3 years ago
3 0

Answer:

≈ 12.05

Step-by-step explanation:

Pythagora

x = √(9² + 8²)

= √(81 + 64)

= √145

≈ 12.05

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Solve using ELIMINATION (with step by step explanation) Please<br><br> 3x+y=-9<br> y=5x+7
Yuki888 [10]

Answer:

<h2>x = -2 (verified by algebra) ✅</h2>

Step-by-step explanation:

Since we are given the value of y, we can replace it with 5x + 7.

We now have: 3x + 5x + 7 = -9

We can now simplify by adding 3x and 5x to get 8x.

8x + 7 = -9

We can subtract 7

8x = -16

And now, we divide by 8

x = -2

We can check to make sure we are correct

3(-2) + 5 (-2) + 7 = -9

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7 0
3 years ago
Mai is filling her fish tank. Water flows into the tank at a constant rate. Complete the table and answer the question below.
kvasek [131]

Answer:

r = 1.6

Step-by-step explanation:

Given

x   -----   y

0.5. --- 0.8

1. --- 1.6

3.--- 4.8

25. --- 40

Required

Determine the constant of proportionality

This can be calculated using the following formula:

y = rx ; Where r is the constant of proportionality;

Solve for r

r = \frac{y}{x}

When x = 0.5; y = 0.8

r = \frac{0.8}{0.5}

r = 1.6

When x =  1; y =1.6

r = \frac{1.6}{1}

r = 1.6

When x =  3; y = 4.8

r = \frac{4.8}{3}

r = 1.6

When x =  25; y = 40

r = \frac{40}{25}

r = 1.6

Notice that the value of r is constant throughout;

Hence:

r = 1.6

5 0
3 years ago
Max is organizing a trip to the airport for a
LuckyWell [14K]

Answer:

<em>$738</em>

Step-by-step explanation:

Uber X costs $40

Max orders 9

$40.00·9=$360.00

Uber XL costs $63

Max orders 6

$63.00·6=$378

$360.00+$378.00=<em>$738</em>

<u>Hope this is helpful :-)</u>

3 0
2 years ago
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