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Illusion [34]
3 years ago
13

Helppp i dont understand

Mathematics
1 answer:
pshichka [43]3 years ago
8 0

Answer:

3

Step-by-step explanation:

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1-10 just the answer not a really big explanation please
goblinko [34]

Answer:

Step-by-step explanation:

1) Isosceles triangle

2) Right angled triangle

3) Scalene triangle

4) Equilateral triangle

5) Right angled triangle

6) Scalene triangle

7) Equilateral triangle

8) Scalene triangle

9) a) Equilateral triangle

9) b) Scalene triangle

9) c)  Isosceles triangle

9) d) Right angled triangle

Note: Right angled triangle - If one angle is right angle, then it is Right angled triangle

Isosceles triangle: If two angles or two sides are equal, then it is Isosceles triangle.

Scalene triangle: If all three sides or three angles have different measurement, then it is Scalene triangle.

Equilateral triangle: If all the three sides are equal or all the three angles are equal, then it is Equilateral triangle

7 0
3 years ago
<333
Gnom [1K]
(210+200+190+180+300+150+90+x)/8=200
(1320+x)/8=200 /*8
1320 +x=1600
X=1600-1320
X= 280
6 0
3 years ago
16. Let W be the set of all vectors in R3 of the form a+2b b -3a Find a basis for Wand state the dimension of W.
Yuki888 [10]

Answer:

W=\{\left[\begin{array}{ccc}a+2b\\b\\-3a\end{array}\right]: a,b\in\mathbb{R} \}

Observe that if the vector x=\left[\begin{array}{ccc}x\\y\\z\end{array}\right] is in W then it satisfies:

\left[\begin{array}{ccc}x\\y\\z\end{array}\right]=\left[\begin{array}{c}a+2b\\b\\-3a\end{array}\right]=a\left[\begin{array}{c}1\\0\\-3\end{array}\right]+b\left[\begin{array}{c}2\\1\\0\end{array}\right]

This means that each vector in W can be expressed as a linear combination of the vectors \left[\begin{array}{c}1\\0\\-3\end{array}\right], \left[\begin{array}{c}2\\1\\0\end{array}\right]

Also we can see that those vectors are linear independent. Then the set

\{\left[\begin{array}{c}1\\0\\-3\end{array}\right], \left[\begin{array}{c}2\\1\\0\end{array}\right]\} is a basis for W and the dimension of W is 2.

7 0
3 years ago
For the polynomial below, -2 is a zero.
Harlamova29_29 [7]

Answer:

Step-by-step explanation:

please note -2 is not a zero ,it should be 2 is a zero.

by synthetic division

2|  1  4 -10 -4

  |      2  12  4

  |----------------

     1  6   2  | 0

x²+6x+2=0

x=\frac{-6 \pm \sqrt{36-8} }{2} \\or~x=\frac{-6 \pm2\sqrt{7} }{2} \\or ~x=-3\pm \sqrt{7} \\h(x)=(x-2)(x^2+6x+2)=(x-2)(x-3+\sqrt{7} )(x-3-\sqrt{7})

7 0
3 years ago
Landon and Vanessa are at an arcade. Landon scored 48,827 points on a video game. Vanessa scored 62,919 on the same game. What w
DochEvi [55]

Answer: 111,746 points

Step-by-step explanation: To find there combined score add Landon's points and Vanessa's arcade points together.

48,827 + 62,919 = 111,746 total arcade points.

6 0
3 years ago
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