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2 years ago

What is the ratio of the circumferences for two circles with areas 6pi m2 and 150pi m2?

Mathematics

2 answers:

kramer2 years ago

8 0

Answer:

Step-by-step explanation:

andreev551 [17]2 years ago

8 0

This would be 1:25 (C)

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A restaurant customer left $1.65 as a tip. The tax was 4 % and the tip was 15% of the after tax cost. Which information is not

Fed [463]

You dont need the percentage of tip. to calculate the bill, divide 100 by 15, then multiply that number by 1.65, you will get the total of the bill afer tax. if you add 1.65 to the total you get the total after tax and tip

8 0

2 years ago

Answers for both boxes please

adelina 88 [10]

Answer:

3,0

Step-by-step explanation:

7 0

2 years ago

What is the area of the composite figure

deff fn [24]

to find the area of the figure, you first need to find the area of the separate figures: a triangle and a square.

first, find the area of the triangle:

multiply 13 and 5 to get 65.

divide 65 by 2.

32.5.

then, find the area of the rectangle:

multiply 5 and 14 to get 70.

add those answers up, and you get:

102.5

3 0

3 years ago

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
$x$

to both sides of the equation to get,

${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

${(x + 2)}^{2} = - 1$

We now take square root of both sides to get;

$x + 2 = \pm \sqrt{ - 1}$

We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

Show me quadrilaterals shapes

Volgvan

Anything with 4 sides is a quadrilateral like a rhombus square trapezoid and diamond

8 0

3 years ago

Read 2 more answers