3 years ago

Pls help I really need this help I’ll try to give extra points

Mathematics

1 answer:

kicyunya [14]3 years ago

3 0

Answer:

Step-by-step explanation:

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What is the approximate distance between the points (-3, -4) and (-8, 1) on a coordinate grid? A. 11.40 units B. 7.07 units C. 3

Blizzard [7]

The formula of the distance between two points:

$A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}$

We have:

$A(-3;-4);\ B(-8;\ 1)$

substitute:

$|AB|=\sqrt{(-8-(-3))^2+(1-(-4))^2}=\sqrt{(-8+3)^2+(1+4)^2}\\\\=\sqrt{(-5)^2+5^2}=\sqrt{25+25}=\sqrt{25\cdot2}=\sqrt{25}\cdot\sqrt2\\\\=\boxed{5\sqrt2\approx7.07}$

Answer: B. 7.07

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3 years ago

Julie has 5/6 pounds of peanuts. She triples the amount, and then divides it into two equal piles.

lukranit [14]

1.25 because 5/6 times 3 is 2.5 and that divided by 2 is 1.25

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3 years ago

Read 2 more answers

The sum of the digits of a two-digit number is 12. The number formed by interchanging the digits is 54 more than the original nu

MArishka [77]

Let's call the digits of the number ab a and b. Then the information in the question can be expressed as

a+b=12 => b=12-a
a*10+b + 54 = b*10+a => 9a + 54 = 9b

9a + 54 = 9(12-a) => 18a = 54 => a=3

b=12-a; b=9

39 swapped gives 93, 39+54=93

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4 years ago

❤️ i need this last question

spayn [35]

Answer: $10\left(\cos90^{\circ}+i\sin90^{\circ}\right)$