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
Viktor [21]
3 years ago
15

If two thirds of a number is decreased by 4, the result is 56. find the number

Mathematics
2 answers:
nikitadnepr [17]3 years ago
6 0
56+4=60\\\\60\times3=180\\\\180:2=\fbox{90}\\\\CHECK:\\\frac{2}{3}\times90-4=2\times30-4=60-4=56

=================================================

128-38=90\\\\90\times9=810\\\\810:5=\fbox{162}\\\\CHECK:\\\\38+\frac{5}{9}\times162=38+5\times18=38+90=128

=================================================

14.6-2.3=12.3\\\\12.3\times5=61.5\\\\61.5:3=\fbox{20.5}\\\\CHECK:\\\\\frac{3}{5}\times20.5+2.3=3\times4.1+2.3=12.3+2.3=14.6
tresset_1 [31]3 years ago
3 0
Let the number be x
There are actually 3 different statements - 

1. two-thirds of a number decreased by 5 is 56
2*x/3 - 4 =56
2*x/3=60
x=90

2. 38 added to 5/9 of number gives 128
i.e 5*x/9 + 38 = 128
5*x/9 = 90
x = 162

3. sum of 2.3 and 3/5 of number gives 14.6
i.e 2.3 + 3*x/5 = 14.6
3*x/5 = 12.3
x = 4.1*5
x = 20.5
You might be interested in
Which coordinate in this ordered pair is the X coordinate? (5,-8)
stepladder [879]

Answer:

5

Step-by-step explanation:

The x coordinate is always listed first

7 0
3 years ago
The issue of corporate tax reform has been cause for much debate in the United States. Among those in the legislature, 27% are R
Ilia_Sergeevich [38]

Answer:

The probability Democrat is selected given that this member favors some type of corporate tax reform is 0.6309.

Step-by-step explanation:

Let us suppose that,

R = Republicans

D = Democrats

I = Independents.

X = a member favors some type of corporate tax reform.

The information provided is:

P (R) = 0.27

P (D) = 0.56

P (I) = 0.17

P (X|R) = 0.34

P (X|D) = 0.41

P (X|I) = 0.25.

Compute the probability that a randomly selected member favors some type of corporate tax reform as follows:

P(X)=P(X|R)P(R)+P(X|D)P(D)+P(X|I)P(I)\\= (0.34\times0.27)+(0.41\times0.56)+(0.25\times0.17)\\=0.3639

The probability that a randomly selected member favors some type of corporate tax reform is P (X) = 0.3639.

Compute the probability Democrat is selected given that this member favors some type of corporate tax reform as follows:

P(D|X)=\frac{P(X|D)P(D)}{P(X)} =\frac{0.41\times0.56}{0.3639}=0.6309

Thus, the probability Democrat is selected given that this member favors some type of corporate tax reform is 0.6309.

5 0
3 years ago
Eloise has 3/4 -pound of bird seeds. Each day, she feeds the birds in her yard 1/8 -pound of seeds. For how many days will she b
bulgar [2K]

Answer:

6 days

Step-by-step explanation:

First, we make common denominators:

3 *2  =  6

_  ->     _

4 *2  =  8

and we get 6/8

6/8 divided by 1/8 will be 6 days

3 0
2 years ago
Solve <br> x=1001+75.55x
gregori [183]

x=1001+75.55x

Simplify

x=<span><span>75.55x</span>+1001</span>

Subtract

x−<span>75.55x</span>=<span><span><span>75.55x</span>+1001</span>−<span>75.55x</span></span>

−<span>74.55x</span>=1001

Divide

<span><span>−<span>74.55x/</span></span><span>−74.55 = </span></span>

<span><span><span><span><span>1001/<span>−74.55</span></span><span><span>your answer is:</span></span><span>x=<span>−<span>13.42723</span></span></span></span></span></span></span>


8 0
3 years ago
Read 2 more answers
A group of students made trees out of paper for a scene in a school play. The trees are shaped like square pyramids. The base is
Readme [11.4K]

Answer:

26.4ft²

Step-by-step explanation:

I first converted the centimeter values to feet

140Cm x 30.48 = 4.59

70cm x 30.48 = 2.3

the paper required is approximately equal to the area of the pyramid.

area of pyramid is equal to area of triangle + base²

Are of triangle = 1/2 x b xh

= 4 x 1/2 x4.59x2.3 + (2.3)²

= 2 x 4.59 x 2.3 + 5.29

= 26.4 feet²

therefore it will take 26.4 feet² paper to make each tree, including the bottom.

8 0
3 years ago
Other questions:
  • Please help me solve this problem
    10·1 answer
  • Regroup through thousands
    15·2 answers
  • What is answer to 48+54=_(8+9)?​
    14·1 answer
  • Please help me fast :) I'll give brainly and you'll get 15 points
    14·1 answer
  • What is the value of X in the figure below? In this diagram.
    14·1 answer
  • I need to know the answer ASAP please
    14·1 answer
  • The ordered pairs (1.3) and (3.7) lie on the line the slope of that line is
    13·1 answer
  • Which pair of triangles can be used to show that the slope of line a is the same anywhere along the line?
    11·1 answer
  • Find the area of square Park with the side of 15 1/5
    5·1 answer
  • Ben is showing his work in simplifying (3.9 − 9.4) − 0.6 + 6.1. Identify any error in his work or reasoning.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!