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Andreyy89
3 years ago
13

Factorize3a⁴+18a²-21-2b-3b²​

Mathematics
2 answers:
I am Lyosha [343]3 years ago
7 0

Answer:

The closest thing i can get to here is

38a^4-21- 7b^2

Step-by-step explanation:

thats the smallest i could get it to hope it helps <3

Gnom [1K]3 years ago
3 0

Answer:

the expression is not factorable with rational numbers.

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Marcy has 567 earmuffs in stock if she can put 18 earmuffs on each shelf, about how many shelves does she need for all of the ea
Nitella [24]

It would be: 567/18 = 31.5

So, she needs atleast 32 shelves....

8 0
3 years ago
Read 2 more answers
Really need you guys help on this problem... please help me
erma4kov [3.2K]
Here it is.. you need to calculate some numbers

3 0
3 years ago
% of 6,000 = 4,500<br> Please help
babymother [125]

Answer:

450

Step-by-step explanation:

Solution for What is 75 percent of 600:

75 percent * 600 =

(75:100)* 600 =

(75* 600):100 =

45000:100 = 450

Now we have: 75 percent of 600 = 450

Question: What is 75 percent of 600?

Percentage solution with steps:

Step 1: Our output value is 600.

Step 2: We represent the unknown value with $x$x​.

Step 3: From step 1 above,$600=100\%$600=100%​.

Step 4: Similarly, $x=75\%$x=75%​.

Step 5: This results in a pair of simple equations:

$600=100\%(1)$600=100%(1)​.

$x=75\%(2)$x=75%(2)​.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

600

x​=

100%

75%​​

Step 7: Again, the reciprocal of both sides gives

x

600​=

75

100​

Therefore, $75\%$75%​ of $600$600​ is $450$

7 0
3 years ago
A cyclist travels 7.7 km in 30 minutes. <br> What is his average speed in km/h?
NARA [144]
60 min = 1 hr
30 times 2 = 60 minutes
7.7 times 2 = 15.4 km
15.4 km per hr is the answer

PLEASE MARK BRAINLIEST
4 0
2 years ago
Consider the following system of equations. -10x2-10y2=-300 5x2+5y2=150 Which statement describes why the system has infinite so
scoundrel [369]

Answer:

The equations represent circles that result in the same graph.

Step-by-step explanation:

we have

-10x^{2}-10y^{2}=-300

Divide by -10 both sides

x^{2}+y^{2}=30 -----> equation A

This is the equation of a circle centered at origin with radius r=\sqrt{30} \ units

and

5x^{2}+5y^{2}=150

Divide by 5 both sides

x^{2}+y^{2}=30 -----> equation B

This is the equation of a circle centered at origin with radius r=\sqrt{30} \ units

equation A and equation B are equal

therefore

The system has infinite solutions, because the equations represent circles that result in the same graph.

4 0
3 years ago
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