Allie and Javier collect coins from different countries. Allie collected three times the difference of

Mathematics

1 answer:

Drupady [299]3 years ago

4 0

Answer:

Step-by-step explanation:

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Please help me with #'s 5&6

Fynjy0 [20]

$5.\\(x+3)^2+7=-2\qquad|-7\\\\(x+3)^2=-9 < 0\\\\\text{NO REAL SOLUTION}\\\\(x+3)^2=-9\to x+3=\pm\sqrt{-9}\\\\x+3=-3i\ \vee\ x+3=3i\qquad|-3\\\\\boxed{x=-3-3i\ \vee\ x=-3+3i}$

$6.\\4(x-10)^2=25\qquad|:4\\\\(x-10)^2=\dfrac{25}{4}\to x-10=\pm\sqrt{\dfrac{25}{4}}\\\\x-10=-\dfrac{\sqrt{25}}{\sqrt4}\ \vee\ x-10=\dfrac{\sqrt{25}}{\sqrt4}\\\\x-10=-\dfrac{5}{2}\ \vee\ x-10=\dfrac{5}{2}\\\\x-10=-2.5\ \vee\ x-10=2.5\qquad|+10\\\\\boxed{x=7.5\ \vee\ x=12.5}$

7 0

4 years ago

What is the relationship between the expression 1/4 divided by 4 and 1/4 X 1/4? Explain.

Vinil7 [7]

The relationship would be that 1/4 ÷ 4 and 1/4 × 1/4 are the same.

This is because, if you were going to work out 1/4 ÷ 4, you would start with writing it as 1/4 ÷ 4/1.
Then, the rule for dividing fractions is you flip the second fraction and change the divide sign to a multiply sign, so that gives you 1/4 × 1/4.

I hope this helps!

5 0

3 years ago

Aiman has 6 pizzas to share at a party. If each person will eat Three Eighths of a pizza, how many people can share the pizza? T

nikklg [1K]

Answer: 9

Step-by-step explanation:

8 0

3 years ago

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The height of a triangle is twice it's base. If the area of the triangle is 40 cm squared, what is the measure of it's height

bagirrra123 [75]

A = bh/2
40 = x(2x)/2
80 = 2x²
40 = x²
x = sqrt40
x = +/- 2sqrt10
Measurement cannot be negative therefore x = 2sqrt10
Height = 2x = 2(2sqrt10) = 4sqrt10
The height of the triangle is 4sqrt10 cm or approximately 12.65cm.

4 0

3 years ago

A line passes through the point (8,4) and has a slope of -3/4 Write an equation in slope-intercept form for this line.

Leokris [45]

Step-by-step explanation:

Hey there!

Given;

The line passed through point (8,4) and made slope (-3/4).

Note: Use one-point formula.

$(y - y1) = m(x - x1)$