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
Alekssandra [29.7K]
3 years ago
6

PLEASE ANSWERRR I WILL GIVE TEN POINTS ITS EASY I SWEAR IM JUST NOT CAPABLE BECAUSE OF MY OTHER ASSIGNMENT PLES IM BEGGING

Mathematics
1 answer:
kvv77 [185]3 years ago
4 0

1) In order to add or subtract fractions denominator must be equal

\frac{1}{4}  +  \frac{2}{5}

Lcm of denominator is 4×5=20 since they are co primes

\frac{1}{4}  \times  \frac{5}{5}  +  \frac{2}{5}  \times  \frac{4}{4}

Now the denominator becomes same

\frac{5 + 8}{20 }  =  \frac{13}{20}

2)

\frac{3}{8}  -  \frac{1}{2}

Lcm =8

\frac{3}{8}  \times  \frac{1}{1}   -  \frac{1}{2}  \times  \frac{4}{4}

\frac{3 - 4}{8}  =  \frac{ - 1}{8}

3)

We just need to add the fractions

\frac{1}{4}  +  \frac{1}{3}

Lcm=12

\frac{1}{4}  \times  \frac{3}{3}  +  \frac{1}{3}  \times  \frac{4}{4}

\frac{3 + 4}{12}  =  \frac{7}{12}

hope it helps :)

plz mark as brainliest

You might be interested in
At a manufacturing plant where switches are made, it is a known fact that 2% of all switches are defective. If two switches are
olchik [2.2K]

Answer:

The probability that exactly one switch is good is

P(x) =0.0392

Step-by-step explanation:

The probability that a switch is defective is:

P(D) = \frac{2}{100} =0.02

The probability that a switch is not defective is

P(D') = 1-P(D)=0.98

Therefore, if two switches are selected, the probability that exactly 1 is good is:

P(1=1)=P (D) P (D ') + P (D') P (D)

P(x)=(0.02)(0.98) + (0.98)(0.02)

P(x) =0.0392

6 0
4 years ago
Read 2 more answers
Twice the difference of a number and 3 is 5.​
Xelga [282]

Answer:

2(3-n)=5

Step-by-step explanation:

7 0
3 years ago
Mona wants to buy carpet for a floor in her house.
Musya8 [376]

Answer:

13.05

Step-by-step explanation:

8 0
3 years ago
What times 8 equals 64
Vsevolod [243]
8 times 8 is 64.

The square root of 64 is 8.
7 0
3 years ago
Read 2 more answers
Use the data in the table below and a graphing calculator to describe how a linear model compares to a quadratic model. Analyze
Delvig [45]

The quadratic model and the linear model of the table of values are the same

<h3>The linear model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • Sum of X = 0
  • Sum of Y = 113
  • Mean X = 0
  • Mean Y = 22.6
  • Sum of squares (SSX) = 10
  • Sum of products (SP) = 28

The regression equation is

y = mx + b

Where

m = SP/SSX = 28/10 = 2.8

b = MY - bMX = 22.6 - (2.8*0) = 22.6

So, we have:

y = 2.8x + 22.6

See attachment for graph (1)

<h3>The quadratic model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • a = 0
  • b = 2.8
  • c = 22.6

0 X^2 +2.8 X +22.6

The regression equation is

y = ax^2 + bx + c

So, we have:

y = 0x^2 + 2.8x + 22.6

See attachment for graph (1)

<h3>Why both graphs look the same</h3>

The graphs look the same because when the quadratic model is simplified, it gives the linear model.

This in other words mean that:

The quadratic model and the linear model of the table of values are the same

Read more about regression at:

brainly.com/question/7656407

#SPJ1

7 0
2 years ago
Other questions:
  • Graphing these functions
    5·1 answer
  • If cot0= 1.5 find tan0
    14·1 answer
  • PLEASE HELP 10 points plus brainliest!
    6·1 answer
  • Due to the increase of posts on social media, the number of flip cell phones is in exponential decline. Data collected from 2009
    5·1 answer
  • Anyone know how to do the first one
    14·2 answers
  • A colonoscopy is a screening test for colon cancer, recommended as a routine test for adults over age 50. A new study provides t
    11·1 answer
  • Line C passes through the points (-6, -2) and (3,8). Line Fis perpendicular to Line C. What is the slope of Line F?
    14·1 answer
  • Need help with algebra
    12·1 answer
  • Please help me, What is 640.31 written in expanded form?
    13·2 answers
  • Big Mack buys meat for the family reunion cookout. He needs to buy 11 packagesof meat. A package of hotdogs costs $2.59, and a p
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!