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Alexxx [7]
2 years ago
8

Simplify: −3−2[4−1].

Mathematics
1 answer:
jasenka [17]2 years ago
8 0
-3-2 (4-1) simplified is -9
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Please answer this question now
inn [45]

Answer:

t = 17.3

Step-by-step explanation:

The following data were obtained from the question:

Angle T = 87°

Opposite T = t =?

Opposite V = v = 14

Opposite U = u = 11

The value of t can be obtained by using cosine rule formula as shown below:

t² = v² + u² – 2vu CosT

t² = 14² + 11² – 2 × 14 × 11 × Cos87°

t² = 196 + 121 – 308 × Cos87°

t² = 317 – 16.119

t² = 300.881

Take the square root of both side

t = √300.881

t = 17.3

Therefore, the value of t is 17.3

6 0
3 years ago
Consider the parabola represented by the equation -2y^2=4x
stepan [7]
Part 1: The general form for this matches y^2 = -4cx, which implies that this opens to the left. (Imagine assigning any value of y, whether positive or negative, which would result in a positive left-hand value. Then to match this sign, the value of x must be negative so that the right-hand side becomes positive as well.)

Part 2: The distance from the vertex to the directrix is given by c. This equation has its vertex at the origin (0, 0). If it opens to the left, the directrix is a vertical line to the right of the origin. This equation is y^2 = -4(1/2)x, so c = 1/2, and the directrix has the equation x = 1/2.

Part 3: The focus is inside the parabola, but it is the same distance from the vertex as the directrix. This distance is 1/2 units, and it will be to the left of the vertex. So the focus is at (-1/2, 0).
5 0
3 years ago
Solve for x: 21x - 3| + 1 = 7
Andreas93 [3]

Answer:

x=6

Step-by-step explanation:

distribute 2 to x and 3..you get 2x -6 +1. add 6 and subtract one to cancel it out and bring it to the other side. 2x=12...simplify x=6

4 0
3 years ago
Which ratios are equivalent to 3 parts silver paint to 4 parts green paint?
Zigmanuir [339]

Answer:

6/8, 9/12

Step-by-step explanation:

6 0
3 years ago
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Barbara bought a new mango tree and planted it in her backyard. She drew the table below to show the growth of her new tree
Nookie1986 [14]

Answer:

2.3 cm per year

Step-by-step explanation:

4 0
3 years ago
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