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neonofarm [45]
3 years ago
15

Which is a solution -2x-y=1 and -4x-2y=-1

Mathematics
1 answer:
grin007 [14]3 years ago
7 0

Answer:

No solutions.

Step-by-step explanation:

-2x -  y = 1

-4x - 2y = -1 Multiply the first equation By  -2:

4x + 2y = -2  Adding:

0 = -3

which is absurd so there are no solutions.

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To input your angle measures in degrees, use the functions sind, cosd and tand, instead of sin, cos and tan. Zach stands at the
kramer

Answer:

  about 2949 feet

Step-by-step explanation:

The geometry of the situation can be modeled by a right triangle. The height of the cliff can be taken to be the side opposite the given angle, and the distance to the coyote will be the side adjacent to the given angle. The relation between these values is the trig function ...

  Tan = Opposite/Adjacent

__

<h3>setup</h3>

Filling in the known values, we have ...

  tan(6°) = (310 ft)/(distance to coyote)

<h3>solution</h3>

Multiplying by (distance to coyote)/tan(6°) gives ...

  distance to coyote = (310 ft)/tan(6°) ≈ 310/0.105104 ft

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The coyote is about 2949 feet from the base of the cliff.

6 0
2 years ago
Given: -16 = m/5 -18; <br> Prove: m=10
spayn [35]

Answer:

I have proven m is 10. have a good day and give brainliest if possible.

3 0
2 years ago
Please help <br> The diagram shows a 5ft student standing near a tree
Novosadov [1.4K]

Answer:

25 ft

Step-by-step explanation:

The diagram shows two triangles that are similar.  Similar triangles have equal angles and sides that are proportional to each other.  Since the base of each triangle is given, we can find the proportion of the sides:

\frac{smaller}{larger}=\frac{8}{40}=\frac{1}{5}

Given the ratio of the smaller to larger triangle, we can set up a proportion to find the missing height of the larger triangle:

\frac{1}{5}=\frac{5}{x}, where 'x' represent the height of the tree

cross-multiply:  x = (5)(5) or 25 ft

8 0
3 years ago
On a map, if one centimeter represents 25 kilometers, how many kilometers does 7 centimeters represent?
Elena-2011 [213]

Answer:

x = 175 km

Step-by-step explanation:

We can use ratios to solve this problem.  Put the map distance over the real life distance.

1 cm      7 cm

--------  = ---------

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Using cross products.

1 * x = 7 * 25

x = 175 km

4 0
3 years ago
AABC with vertices A(- 2, 3), B(3, - 3) , and C(- 2, - 3) is shown below.
kicyunya [14]

Answer:

ab= 7.8

ac= 6

bc=5

Step-by-step explanation:

4 0
2 years ago
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