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prohojiy [21]
3 years ago
13

Which ones are right? (20 points)

Mathematics
2 answers:
klemol [59]3 years ago
8 0

Answer:

A D E and F

Step-by-step explanation:

Nadya [2.5K]3 years ago
7 0

Answer:

A, D, E, F

Step-by-step explanation:

the y-intercept is the b part of the equation of a line : y=mx+b.

so, for example, A. y=3x-8 has a y-intercept of -8

and B. y=3x-9 has a y-intercept of -9

and C. y= 3x+8 has a y-int of 8

and so on.

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Jill has 120 feet of fencing to use for her horse paddock. To increase the area she can enclose, she plans on using the side of
Margarita [4]
Answer: <span>-x2 + 120x = 1,800
</span><span>
She plans on using the side of the barn as one side of her paddock so it has 3 sides. Since the width is shorter, it will be more efficient to have 2 widths (1 lengths and 2 widths). Because J</span><span>ill has 120 feet of fencing to use, you can get this equation:
120ft= 1L +2W
</span>1L= 120-2W

If you insert it into area formula it would be:
area= L*W
area= (120-2W) *W
area= 120W- 2W^2
-2W^2+120W= area

<span>Since x represent the width of the paddock and the area is 1800 the equation become
</span>-2X^2+120X= 1,800
8 0
3 years ago
During a football game, the team lost 6 yards and then another 3 yards. How many yards behind the line of scrimmage are they?
Vika [28.1K]

Answer:

They are 9 yards behind

Step-by-step explanation:

Lost 6 yards: -6

Lost another 3 yards: -3

Add them together:

-6 + -3 = -9

They are 9 yards behind

6 0
4 years ago
Susan's cell phone plan allows her to use 950 minutes per month with no additional charge she has 188 minutes left for this mont
arsen [322]
950 - 188 = 762
Susan used 762 minutes in this month already.
6 0
4 years ago
Write the expression 2i^15-i^7 in the standard form a + bi
elixir [45]
\bf 2i^{15}-i^7\qquad &#10;\begin{cases}&#10;i^2=\sqrt{-1}\cdot \sqrt{-1}\implies \sqrt{(-1)^2}\implies -1\\\\&#10;i^4=i^2\cdot i^2\implies -1\cdot -1\implies 1&#10;\end{cases}\\\\&#10;-----------------------------\\\\&#10;2i^{4+4+4+2+1}-i^{4+2+1}\implies 2i^4i^4i^4i^2i^1-i^4i^2i^1&#10;\\\\\\&#10;(2\cdot 1\cdot 1\cdot 1\cdot -1\cdot i)-(1\cdot -1\cdot i)\implies -2i-(-i)&#10;\\\\\\&#10;-2i+i\implies -i\implies \boxed{0-i}
7 0
3 years ago
I will give Brainliest. URGENT!!!
Sergio039 [100]

Answer:

RZ = 71

SW = 142

x = 22

Step-by-step explanation:

3x + 5 + 3x + 5 = 7x - 12 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 6x + 10 = 7x - 12 \\  \frac{ - 7x \:  \:  \:  \:  \:  \:  \:  =  - 7x}{ - 1x + 10 =  - 12}  \\  \frac{  \:  \:  \:  \:  \:  \:  \:  \:  \: - 10 =  - 10}{  \frac{ - 1x}{ - 1}  =  \frac{ - 22}{ - 1} }  \\  \\ x = 22

6 0
3 years ago
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