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3 years ago

Help me PLEASE quick I will give you brainliest

Mathematics

2 answers:

Tema [17]3 years ago

8 0

Answer:

56. Someone correct me if I'm wrong.

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean Theorem, which is a² + b² = c²

a and b are the legs, and c is the hypotenuse. Here, we know the length of one leg and the hypotenuse. So...

a² + 42² = 70²

First, we need to square these numbers. 42² is 1764. 70² is 4900. So...

a² + 1764 = 4900

Now, we can subtract 1764 from both sides.

a² + 1764 - 1764 = 4900 - 1764

That would give us...

a² = 3136

Now, we square root 3136.

So...

$\sqrt{3136}$ = 56

The missing side <em>should be</em> 56.

slamgirl [31]3 years ago

5 0

68 i am pretty sure.

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If 40% of a number is 56. What was the original number

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3 years ago

Please I need help!!!!

liberstina [14]

Answer:

x = 19/3

Step-by-step explanation:

Solve for x:

30 x = 12 x + 22 + 23 (1 + 3)

Hint: | Evaluate 1 + 3.

1 + 3 = 4:

30 x = 12 x + 22 + 4 23

Hint: | Multiply 23 and 4 together.

23×4 = 92:

30 x = 12 x + 22 + 92

Hint: | Group like terms in 12 x + 22 + 92.

Grouping like terms, 12 x + 22 + 92 = 12 x + (92 + 22):

30 x = 12 x + (92 + 22)

Hint: | Evaluate 92 + 22.

92 + 22 = 114:

30 x = 12 x + 114

Hint: | Move terms with x to the left hand side.

Subtract 12 x from both sides:

30 x - 12 x = (12 x - 12 x) + 114

Hint: | Combine like terms in 30 x - 12 x.

30 x - 12 x = 18 x:

18 x = (12 x - 12 x) + 114

Hint: | Look for the difference of two identical terms.

12 x - 12 x = 0:

18 x = 114

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 18 x = 114 by 18:

(18 x)/18 = 114/18

Hint: | Any nonzero number divided by itself is one.

18/18 = 1:

x = 114/18

Hint: | Reduce 114/18 to lowest terms. Start by finding the GCD of 114 and 18.

The gcd of 114 and 18 is 6, so 114/18 = (6×19)/(6×3) = 6/6×19/3 = 19/3:

Answer: x = 19/3

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

What is the answer to<br> 2/3x = − 1/2x + 5

umka2103 [35]

Answer:

x = 30/7

Step-by-step explanation:

2/3x = − 1/2x + 5

multiply by 6 to clear the fractions

4x = -3x + 30

add 3x to both sides

7x = 30

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x = 30/7

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3 years ago