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Anarel [89]
2 years ago
14

Need help with homework plz and thank u :)

Mathematics
2 answers:
olga2289 [7]2 years ago
7 0

Answer:

For part a you need to factor. X to the power of 2 is 2x. when you add it its turns into 2x+10x+16=0

2x+10x=12x

12x+16 will be your final answer

Step-by-step explanation:

Vinil7 [7]2 years ago
7 0
To factorise you have to find what multiplies to the number without an x and adds to the number with x
What times to 16 and add to 10?
8 and 2
Put these in brackets with x
(x+8)(x+2)=0
To find what x is you need to make both bracket equal zero
The easy way to do this is to flip the sign
x=-8
x=-2
The solutions represent the roots of the graph which is when it crosses the x-axis. The two solutions represent what x would equal when y=0 in this equation.
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PLEASE HELP!!!<br><br> CHOOSE THE SOLUTION TO FOLLOWING INEQUALITY (in picture)
Helga [31]

Answer:

the last one is the answer of it

6 0
3 years ago
There are 40 nickels in a roll. If you have 250 rolls of nickels, how many nickels do you have?pls help me
gayaneshka [121]

Answer:

10,000 nickles

Step-by-step explanation:

Since there are 40 nickles in a roll and you have 250, think that you have 250 sets of 40. This means that this question is a multiplication problem.

Multiply 40 x 250. This would give you 10,000.

Don't forget units.

7 0
3 years ago
Read 2 more answers
If the radius of mars is about 13.7% of neptune's radius, what is the radius of neptune?
Marianna [84]
The volumetric mean radius of Mars is about 3389.5 km. We know that it's 13.7% of Neptune's mean radius, so we can write it down as:

3389.5 = 13.7% of x (where x is Neptune's radius)
3389.5 = 13.7% x
3389.5 = 137/1000x                / * 1000 (both sides)
3389500 = 137x                       / ÷ 137 (both sides)
x = 24740.87591240876
x ≈ 24740.88

Answer: The mean radius of Neptune is about 24740.88 km.
6 0
3 years ago
I need help on my math
bekas [8.4K]
The answer is the second choice I believe
8 0
3 years ago
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The dimensions of a rectangles are 8cm and 12cm. What is the ratio of its length to its perimeter?
kari74 [83]

Answer:

Dimensions = 8 CM and 12 CM

length = 12 CM

width = 8 cm

perimeter = 2 ( length + width)

= 2( 12 + 8)

= 2 ( 20)

= 40 CM

ratio = 12/40

= 6/20

= 3/10

<h2>= 3 : 10 </h2>
3 0
2 years ago
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