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Amanda [17]
3 years ago
5

Help please !!! i don’t understand

Mathematics
1 answer:
lana66690 [7]3 years ago
6 0

Answer:

The correct answer is C.

2x² + 7x - 30 is equal to (2x−5)(x+6)

Step-by-step explanation:

2x² + 7x - 30

= 2x² − 5x + 12x − 30

= (2x−5)(x+6)

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Anyone please help me with last two I'll vote brainliest!! :))
Alja [10]

Answer:

7. y= x + 12   8. y= -1 + 4x

Step-by-step explanation:

for 7 all you need to do is subtract x from both sides to get y= 12- x, and to make it perpendicular you need to make the current slope it’s exact opposite so in this case that’s just changing the “-” symbol to an “+”.

for 8 you do the same first step you did in 7 and subtract 4x from both sides to get -y= 1 - 4x. Next you divide everything by -1 (because it’s the number in front of the Y) and you get Y= -1 + 4x

7 0
3 years ago
Shu Yi can't resist a sale. She recently bought a dress for $93 after it had been discounted 25%. She also purchased shoes that
faust18 [17]
First divide 93 by 3 to get 25% of the original price: 31. Then multiply it by 4 to get the whole original price, which is $124. Now onto the shoes. 
Divide 119 by 17 to get 7, which is 5% of the original price for the shoes. Then multiply 7 by 20, which is $140 for shoes. 
Subtract 124-93 to get 31, the savings on the dress and also subtract 
140-119 to get 21, savings on the shoes. Then add them together to get a grand savings total of $52 in savings. Hope this helps!
7 0
3 years ago
6x5x7xfreepoints5x7x8x6x45x6x8x7x55x6x6x6x6x0=
Liula [17]

Answer: 0

Yurrrrrrr

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Can somone explain pythagorous
AleksAgata [21]

Answer:

x=6

Step-by-step explanation:

Pythagorean Theorem: AC^2+BC^2=AB^2

BC= x

AB= 10 cm

AC= 8 cm

~

Now, Substitute

8^2+x^2=10^2

64+x^2=100

100-64=x

\sqrt{36}=x^2

Square root x^2= x, √(36)=6

x=6

Therefore, the length of x = 6

~

8 0
2 years ago
4% is equivalent to what fraction in reduced terms?
AnnZ [28]

Answer:

1/25

Step-by-step explanation:

4/100 = 2/50 = 1/25

6 0
3 years ago
Read 2 more answers
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