1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
borishaifa [10]
2 years ago
11

The probability that you randomly select a red marble from a group of 40 marbles is 7/20 . How many are red marbles?

Mathematics
2 answers:
Vladimir79 [104]2 years ago
7 0
14 i think. Since 7/20 is 35%, it’s 40-65%(100%-35%) and so it is 14 red marbles.
Masteriza [31]2 years ago
5 0
There are 14 red marbles
You might be interested in
Simplify.<br><br> 4 x (8 + 5) + 9 can someone help me out plz
Xelga [282]

Step-by-step explanation:

4x(8+5)+9

=52x+9

=52x+9

Description:

The first step is to simplify the equation provided. So in this case the equation is 4 x (8 + 5) + 9.  After that you will get your answer as =52x+9. So in this case 4 x (8 + 5) + 9 = =52x+9.

Answer: =61

Hope this helps.

8 0
2 years ago
Read 2 more answers
I need help a problem 11
Dimas [21]

Answer:

x=5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The sum of two numbers is x. If one of the numbers is 12, what is the other ?
Vlad1618 [11]
If the sum of two numbers is x

Then the equation is like this:

a+b = x

Then it says one of the number is 12. Change either a or b into 12

12 + b =x

If we want to find the other number, we need the make it into the subject

b = x - 12

Hope that help.
6 0
3 years ago
Read 2 more answers
Given: F(x) = x + 2 and G(x) = 3x + 5<br><br> (F*G) (x) =
vovangra [49]

Answer:

\boxed{(f \times g)(x) = 3 {x}^{2}  + 11x + 10}

Given:

f(x) =  x + 2 \\  \\ g(x) =  3x + 5

To Find:

(f \times g)(x) = f(x) \times g(x)

Step-by-step explanation:

=  > f(x) \times g(x) = (x + 2)( 3x + 5) \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   =x( 3x + 5) + 2(3x + 5)  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   =3 {x}^{2}  + 5x + 6x + 10\\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   =3 {x}^{2}  + 11x + 10

5 0
3 years ago
Read 2 more answers
are any two regular polygons similar. The area of the smaller figure is about 390 cm^2. choose the best estimate of the area of
galben [10]

Answer:

The best estimate of the area of the larger figure is 693\ cm^{2}

Step-by-step explanation:

step 1

<em>Find the scale factor</em>

we know that

If two figures are similar, then the ratio of its corresponding sides is equal to the scale factor

Let

z----> the scale factor

x-----> the corresponding side of the larger figure

y-----> the corresponding side of the smaller figure

so

z=\frac{x}{y}

we have

x=12\ cm

y=9\ cm

substitute

z=\frac{12}{9}=\frac{4}{3} -----> the scale factor

step 2

<em>Find the area of the larger figure</em>

we know that

If two figures are similar, then the ratio of its  areas is equal to the scale factor squared

Let

z----> the scale factor

x-----> the area of the larger figure

y-----> the area of the smaller figure

so

z^{2}=\frac{x}{y}

we have

z=\frac{4}{3}

y=390\ cm^{2}

substitute and solve for x

(\frac{4}{3})^{2}=\frac{x}{390}

(\frac{16}{9})=\frac{x}{390}

x=390*16/9=693.33\ cm^{2}

4 0
2 years ago
Other questions:
  • Can some help me with this algebra problem. I have done it several times but it seems to be wrong everytime
    8·1 answer
  • Jack is purchasing a stock that pays an annual dividend of $3.42 per share. If he purchases 400 shares for $53.18 per share, wha
    14·1 answer
  • Explain how you can use a quick picture to find 3x2.7
    13·1 answer
  • 6x-2y=24<br> how do u solve for y
    13·2 answers
  • If mZBGF = 152°, what is m ZAGE?<br> A<br> B<br> 88°<br> F<br> G<br> с<br> E<br> D
    5·1 answer
  • Matthew made slightly larger blanket that was 8 Ft long. Its area is 64 sq ft what is its perimeter?
    12·1 answer
  • Please and Thank You ​
    13·2 answers
  • Find the area of the shaded part of the triangle below. Round to the nearest tenth if needed.
    11·2 answers
  • Can anyone help me please I'm not good at math:(​
    9·1 answer
  • Please answer for both lateral and total :)
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!