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RideAnS [48]
3 years ago
8

Y'all can you answer these? 8th grade algebra 1-10 Q's??

Mathematics
2 answers:
Nadya [2.5K]3 years ago
4 0

Answer:

This is 8th grade? I learned this in 7th grade

Step-by-step explanation:

1. Slope= 3/4x (MAKE SURE TO PUT THE X) Y intercept = +7 (MAKE SURE YOU PUT A + IF IT IS POSITIVE AND - IF NEGATIVE

2. Slope = 5x  Y intercept = 8 (I think this was a trick question?)

3. Slope = -2x Y intercept = 0 (So just keep it empty or say 0 if your teacher is like that)

4. Slope = x Y intercept = +12

I can't see the full question so sadly I can't help with the otherones

Oxana [17]3 years ago
3 0

Answer:

1. slope= 3/4x Y-intercept= 7

2. slope= 5x Y-intercept=8

3. slope= -2x Y-intercept=0

4. slope= 0 Y-intercept=12

*the table ones are difficult to type out but sorry if it doesnt make sense*

5. X Y=3x+4. Y

0 y=3(0)+4 4

1 y=3(1)+4 7

2 y=3(2)+4 10

3 y=3(3)+4 13

4 y=3(4)+4 16

6. X y=1/2x-1. Y

-2 y=1/2(-2)-1 -2

1 y=1/2(1)-1 1.5

4 y=1/2(4)-1 2

6 y=1/2(6)-1 3

9 y=1/2(9)-1 3.5

7. X. Y=5-2x Y

0 y=5-2(0) 5

1 y=5-2(1) 3

2 y=5-2(2) 1

3 y=5-2(3) -1

4 y=5-2(4) -3

I believe you need the graph for the last 3

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Mashcka [7]

Answer:

a° = 118° , b° = 49° , c° = 144° , d° = 98°

Step-by-step explanation:

* Lets study the figure and take the information to solve the question

- There is a circle

- There is an inscribed triangle in the circle

- Each vertex of the triangle is an inscribed angle in the circle

- Each vertex subtended by an arc

- The measure of any inscribed angle is half the measure of its

  subtended arc

* Now lets solve the question

- The sum of the measures of the interior angles of a triangle is 180°

∵ The triangle has angle of measure 59° and another angle of

   measure 72°

∴ The measure of the third angle = 180° - (59° + 72°) = 49°

∵ b° is the measure of the third angle in the triangle

∴ b° = 49°

- The arc of measure a° is intercept the angle of measure 59°

∵ The measure of the angle is half the measure of the arc

∴ 1/2 a° = 59° ⇒ multiply both sides by 2

∴ a° = 118°

- The arc of measure c° is intercept the angle of measure 72°

∵ The measure of the angle is half the measure of the arc

∴ 1/2 c° = 72° ⇒ multiply both sides by 2

∴ c° = 144°

- The arc of measure d° is intercept the angle of measure 49°

∵ The measure of the angle is half the measure of the arc

∴ 1/2 d° = 49° ⇒ multiply both sides by 2

∴ d° = 98°

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3 years ago
5y(4y^2−2y)+3y(−2y^2+4y)<br><br>Please help
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Answer:

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Step-by-step explanation:

5 0
3 years ago
(17 PTS)<br> GEOMETRY QUESTIONS, PLEASE HELP!
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14. 
Angles 4 and 6 are supplementary, because they are on the same line. Supplementary angles add up to 180 degrees, and a line must be 180 degrees.

15.
Angles 1 and 8 are congruent, because they are alternate exterior angles

16.
m = y2 - y1 / x2 - x1
m = 7 - 2 / 4 - 5
m = 5 / -1
m = -5

17.
m = 3 - 3 / 7 - (-5)
m = 0 / 12
m = 0

18.
m = 1 - (-2) / 5 - (-4)
m = 3 / 9
m = 1/3

19.
A = (0, 3) - B = (3,0)
m = 0 - 3 / 3 - 0
m = -3 / 3
<em>m = -1</em>
C = (0, -2) - D = (4, 2)
m = 2 - (-2) / 4 - 0
m = 4 / 4
<em>m = 1</em>
Perpendicular, because the slopes are opposite reciprocals.

20.
E = (1, 2) - F = (0, 0)
m = 0 - 2 / 0 - 1
m = -2 / -1
<em>m = 2</em>
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Neither, because the slopes are different.

21.
I = (0, 1) - J = (2, -4)
m = -4 - 1 / 2 - 0
<em>m = -5/2</em>
K = (-1, -2) - L = (4, 0)
m = 0 - (-2) / 4 - (-1)
<em>m = 2/5</em>
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22.
M = (-2, 2) - N = (2, 2)
Horizontal line
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Horizontal line
<em>m = 0
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<em>
</em>23.
Angle 2 is congruent to angle 1 because of the alternate exterior angle theorem.
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7 0
3 years ago
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Bethany paid $408.75 for a pair of diamond stud earrings. The sale price was $375. What is the Percent of Sales Tax she paid for
9966 [12]

Answer:

She paid 9% of sales tax

Step-by-step explanation:

The sale price of diamond = $375

Let x be percent of sales tax

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So, Amount including tax = 375+3.75x

We are given that Bethany paid $408.75 for a pair of diamond stud earrings.

So, 375+3.75x=408.75

3.75x=408.75-375

x=\frac{408.75-375}{3.75}

x=9

Hence She paid 9% of sales tax

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3 years ago
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Anastasy [175]

Answer:

B. $19.90

Step-by-step explanation:

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