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sleet_krkn [62]
3 years ago
7

I need help me with number 7

Mathematics
1 answer:
Lina20 [59]3 years ago
4 0
-7=-9+n/8
Add 9 to both sides
2=n/8
Multiply 8 on both sides
Final Answer: 16=n
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Is it scalene isosceles or equilateral then write acute obtuse or right thx
almond37 [142]
It's scalene because it has different sides and obtuse because root 40²+30²=50
110>50
4 0
3 years ago
Slove by using elimination <br> 3x+7y=27 <br> -3x+y=21
tankabanditka [31]

Answer:

x = -5

y = 6

Step-by-step explanation:

3x + 7y = 27      --------------(I)

-3x + y = 21        -----------(II)

Add equation (I) & (II) and so x will be eliminated and we can find the value of y.

(I)      3x + 7y = 27    

(II)    <u> -3x + y = 21  </u>      {add}

                8y = 48

                   y = 48/8

                   y = 6

Plugin y = 6 in equation (I)

3x +7*6 = 27

3x + 42 = 27

       3x = 27 - 42

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         x = -15/3

x = -5

8 0
3 years ago
IF YOU ANSWER RIGHT I MIGHT GIVE BRAINLIST!!!
Pie

Answer:

1. Positive, 1+2=3

2. Negative, -1-2=-3

Step-by-step explanation:

If you look at both in a graphing perspective, the point (1,2) is in Quadrant I. likewise, adding 2 to the x-coordinate will also result in the point (3,2), also in Quadrant I, where the x coordinate is positive. The point (-1,2) is in Quadrant II, and adding -2 to the x coordinate keeps it in Quadrant II, where the x-coordinate is negative.

8 0
3 years ago
Read 2 more answers
Keveni can travel 221/2 miles in 1/3 hours what is his average speed in miles per hour
Alborosie

So I have 2 answers here they are.

key: 1/3hours =20 min

221÷2=110.5÷20=5.525

221.5÷20=11.075

I hope this helps!

6 0
3 years ago
How many more equal angles does a square have than a rectangle?
leva [86]
A rectangle, is a quadrilateral with all angles at 90°.

a square is a quadrilateral with all equal sides, and right-angles all around.

now, the rectangle as well as the square, have all right-angles, the only difference is that the square has all equal-length sides, whilst a rectangle can have pairs of sides that vary in length.
5 0
3 years ago
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