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Novay_Z [31]
3 years ago
9

Solve. d + 4 = –1 A. –5 B. –3 C. 3 D. 5

Mathematics
2 answers:
Marina86 [1]3 years ago
8 0
The answer is A. -5 there is a site called Symbolab that solves them for you.
77julia77 [94]3 years ago
7 0
The answer to your question is -5
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A right triangle has a hypotenuse length of 12, and one side length of 9. find the missing side length. do the side lengths form
Rina8888 [55]

Use the Pythagorean theorem:

a^2+b^2=c^2

c - a hypotenuse

a, b - legs

We have: a = 9 and c = 12. Substitute:

9^2+b^2=12^2

81+b^2=144               <em>subtract 81 from both sides</em>

b^2=63\to b=\sqrt{63}\\\\b=\sqrt{9\cdot7}\\\\b=\sqrt9\cdot\sqrt7\\\\ \boxed{b=3\sqrt{7}}

A Pythagorean triple consists of three positive integers a, b and c, such that

a^2+b^2=c^2.

b=3\sqrt{7} is not positive integer.

<h3>The sides of the triangle do not form a pythagorean triple.</h3>
5 0
3 years ago
Hey hey u guyss 60 pointsss<br><br><br>-6.1(-4.1) +6.8=<br><br><br>btw hurry im timed plss :)
xenn [34]

Answer:

31.81

Step-by-step explanation:

-6.1 * -4.1 = 25.01

+ 6.8 = 31.81

4 0
2 years ago
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I really need help with these 2 questions
igor_vitrenko [27]
The question 6 is 2,150 meters question 7 is length 10w+64 meters
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A model car is 3 3/4 inches long.using a scale of 1/2 inch=2 feet,find the actual length of the car
MaRussiya [10]

Answer:

14.25 because for every 1/2 inch, the car is 2 feet.

Step-by-step explanation:

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3 years ago
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Serhud [2]

Answer:

5

Step-by-step explanation:

Plug in x = 2 into the equation 2x + 1

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5

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3 years ago
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