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3 years ago

There are 30 marbles in a bag. There are 11 red, 12 blue, and 7 green.

Mathematics

2 answers:

andreev551 [17]3 years ago

7 0

Answer: D.) 23%

Step-by-step explanation:

There is a 7/30 chance of selecting a green marble.

7/30 as a percent is 23.33333% and D is the closest answer.

azamat3 years ago

7 0

Answer:

I’m pretty sure it’s D

Step-by-step explanation:

Please mark brainliest.

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Write as a sum, difference or multiple of logarithms. In(8x) = [ ? ]8+ [ ]x

deff fn [24]

Answer:

In(8x)=[In]8 + [In]x

Step-by-step explanation:

By product rule:

$In(8x)=[In]8 + [In]x$

8 0

2 years ago

Solve the following system of equations algebraically: y = x^2+7x−4 y = −x−4

oksian1 [2.3K]

Y = x² + 7x - 4
y = -x - 4

x² + 7x - 4 = -x - 4
+ x + x
x² + 8x - 4 = -4
+ 4 + 4
x² + 8x = 0
x(x) + x(8) = 0
x(x + 8) = 0
x = 0 or x + 8 = 0
   - 8 - 8
x = -8

  y = -x - 4
  y = -0 - 4
  y = 0 - 4
  y = -4
(x, y) = (0, -4)
or
y = -x - 4
y = -(-8) - 4
y = 8 - 4
y = 4
(x, y) = (-8, 4)

The solutions are (0, -4) and (8, -4).

7 0

3 years ago

Read 2 more answers

The ratio of money in Terry's bank account to Faye's bank account was 3:7. Terry then put £220 in his account and Faye withdrew

Nesterboy [21]

Answer:

£910

Step-by-step explanation:

let 3x and 7x be the initial amounts in their accounts, then after alterations

Terry has 3x + 220

Faye has 7x - 300

After these changes the amounts are equal, hence

7x - 300 = 3x + 220 ( subtract 3x from both sides )

4x - 300 = 220 ( add 300 to both sides )

4x = 520 ( divide both sides by 4 )

x = 130

Faye initially had 7 × £130 = £910 in her account

3 0

3 years ago

For quadrilateral ABCD, determine the most precise name for it. A(-2,3), B(9,3), C(5,6) and D(2,6). Show your work and explain.

horsena [70]

To solve this problem you must apply the proccedure shown below:

1. You have the following points given in the problem above:

A(-2,3), B(9,3), C(5,6) and D(2,6)

2. When you plot them, you obtain the figure shown in the graph attached.

3. Therefore, as you can see, the answer is: the figure is a trapezoid, which is define as a quadrilateral with two parallel sides.

8 0

3 years ago

In this lesson, you learned new formulas to find the area of a triangle. How are these formulas different from the commonly know

Yuki888 [10]

Aside from the conventional formula for triangle, A=½bh which is only applicable to problems where the base and height are already given and the triangle is a right triangle having a degree of 90. There are some formulas in getting the area of a triangle:

>Given three sides of the triangle, use Heron's Formula
A= sqrt(s(s-a)(s-b)(s-c))
s= (a+b+c)/2
>Given two sides with an included angle
Area = 1/2 ab sin (tetha)
tethat should be in degrees

3 0

3 years ago