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Lynna [10]
2 years ago
15

Please help asap!!!!

Mathematics
1 answer:
Leya [2.2K]2 years ago
6 0

Answer:

z = 25

Step-by-step explanation:

adjacent angles in a rhombus are supplementary

3z - 15 + 7z - 55 = 180

10z - 70 = 180

10z = 250

z = 25

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Write an equivalent expression<br>8x - 6x + 10y + 6 + 4y + 9 = ?x + ?y + ?​
k0ka [10]

Answer: 2x + 14y + 15

Step-by-step explanation:

8x - 6x + 10y + 6 + 4y + 9

Bring like terms together

8x - 6x  + 10y + 4y + 6 + 9

Combine like terms

2x + 14y + 15

Hope this helped!

7 0
2 years ago
two vertical cliffs are on opposite sides of a 90 foot wide river. From point A at the top of the shorter cliff, the angle of el
Sedbober [7]
Answer: The tall cliff is 118.20 feet tall and the short cliff is 70.32 feet tall.

If you draw a picture with 2 cliffs and a river in the middle, you have find 2 right triangles. In each triangle the adjacent side to our known angle is the river of 90 feet. And the unknown side is the opposite leg.

Therefore, we can set up a tangent equation.

From the top of the short cliff to the top of the tall cliff, we can right and solve the following trig equation:

tan(28) = x /90
x = 47.88

From the top of the short cliff to the bottom, we can right and solve the following trip equation.

tan(38) = x/90
x = 70.32

The 70.32 is also the height of the short cliff. And adding the two answers together will give you the height of the tall cliff.

5 0
3 years ago
Classify each triangle by its angles and sides.<br><br>ABE<br><br>BEC<br><br>DEF<br><br>CDF​
lapo4ka [179]

Answer:

scalene right

isosceles obtuse

equilateral equilateral

scalene acute

7 0
2 years ago
A civil engineer is designing a public parking lot for the new town hall. The number of cars in each row should be six less than
Alexandra [31]
The new parking lot must hold twice as many cars as the previous parking lot. The previous parking lot could hold 56 cars. So this means the new parking lot must hold 2 x 56 = 112 cars

Let y represent the number of cars in each row, and x be the number of total rows in the parking lot. Since the number of cars in each row must be 6 less than the number of rows, we can write the equation as:

y = x - 6             (1)

The product of cars in each row and the number of rows will give the total number of cars. So we can write the equation as:

xy = 112           (2)

Using the above two equations, the civil engineer can find the number of rows he should include in the new parking lot.

Using the value of y from equation 1 to 2, we get:

x(x - 6) = 112       (3)

This equation is only in terms of x, i.e. the number of rows and can be directly solved to find the number of rows that must in new parking lot.
6 0
3 years ago
A coin is tossed 5 times. Find the probability that none are heads. Find the probability that at most 2 are heads.
kiruha [24]
1- the answer is 1/32


each time we flip a coin the whole probabilities are 2
if we flip it 5 times
2*2*2*2*2=32

6 0
2 years ago
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