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
Lorico [155]
3 years ago
12

Expand and simplify (x + 3)(x + 5)​

Mathematics
2 answers:
Fittoniya [83]3 years ago
7 0

Answer:

xsquared+8x+15

Step-by-step explanation:

xsquared+3x+5x+15

xsquared+8x+15

ozzi3 years ago
6 0
1 *(x+3) * 1*(x+5)

1x+3 1x+5

combine like terms

2x+8
You might be interested in
Yara saved 440$. She spent 3/4 of it on a tablet. How much money did yara spend on the tablet
TiliK225 [7]
440 times 3/4=330
$330
5 0
3 years ago
Read 2 more answers
I’m literally struggling like can someone hel me plz this is due tomorrow
KonstantinChe [14]

Check the picture below.

4 0
3 years ago
Given the number 2464829438 what is the next number?
malfutka [58]
2464829438
The next number is 2,464,829,439
5 0
3 years ago
Read 2 more answers
I don’t understand the polynomials
Serhud [2]
Polynomial comes from poly- (meaning "many") and -nomial (in this case meaning "term") ... so it says "many terms"

A polynomial can have:

constants (like 3, −20, or ½)
variables (like x and y)
exponents (like the 2 in y2), but only 0, 1, 2, 3, ... etc are allowed
that can be combined using addition, subtraction, multiplication and division ...

... except ...

... not division by a variable (so something like 2/x is right out)

So:

A polynomial can have constants, variables and exponents,
but never division by a variable.

Also they can have one or more terms, but not an infinite number of terms.

These are polynomials:

3x
x − 2
−6y2 − ( 79 )x
3xyz + 3xy2z − 0.1xz − 200y + 0.5
512v5 + 99w5
5
(Yes, "5" is a polynomial, one term is allowed, and it can be just a constant!)



These are not polynomials

3xy-2 is not, because the exponent is "-2" (exponents can only be 0,1,2,...)
2/(x+2) is not, because dividing by a variable is not allowed
1/x is not either
√x is not, because the exponent is "½" (see fractional exponents)


But these are allowed:

x/2 is allowed, because you can divide by a constant
also 3x/8 for the same reason
√2 is allowed, because it is a constant (= 1.4142...etc)
7 0
3 years ago
An urn contains a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles d
Umnica [9.8K]

Answer:

We  can reject the hypothesis at the 0.05 significance level.

 

Step-by-step explanation:

given that an urn contains  a very large number of marbles of four different colors: red, orange, yellow, and green. A sample of 12 marbles drawn at random from the urn revealed 2 red, 5 orange, 4 yellow, and 1 green marble.

H0: All colours are equally likely

Ha: atleast two colours are not equally likely

(Two tailed chi square test at 5% significance level)

color                  Red           Orange      Yellow      Green         total

Observed  O         2                     5                  4           1              12    

Expected   E         3                     3                   3          3              12

(O-E)^2/E             0.3333            5.3333        0.3333  5.3333     11.3333

chi square = 11.3333

df =3

p value = 0.010055

Since p < 0.05 we reject H0

We  can reject the hypothesis at the 0.05 significance level.

 

3 0
3 years ago
Other questions:
  • two golfers completed one round of golf. the first golfer had a score of +6 and the second golfer had a score of -3. how many mo
    6·1 answer
  • How to solve this? I know how to do the Pythagorean theorem but this only gives 1 side
    12·1 answer
  • What pattern follows 444,000
    5·1 answer
  • Can someone help me figure this out plz? Thank you!!!
    15·1 answer
  • What’s the answer to the problem in the picture?
    11·1 answer
  • What's the difference of the two polynomials? (9x²+8x)-(2x²+3x)<br>A)7x²+5x​
    11·1 answer
  • Sissy wants to enlarge a picture of a princess so that she can put it on the wall in her daughter’s room. What will be the area
    15·2 answers
  • Two schools start with 1000 students. The first school's enrollment increase 20% in 2012 and then decreases 20% in 2013; the sec
    10·1 answer
  • A scientist is performing a study on mosquitoes. She collects water with mosquito larvae and places it in an enclosed container
    6·1 answer
  • Help!!!!!!!!!!!!!!!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!