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4 years ago

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Mathematics

1 answer:

Helga [31]4 years ago

8 0

Answer:

angle 1= 70 degrees

angle 2= 65 degrees

angle 3= 65 degrees

angle 4 = 115 degrees

angle 5= 45 degrees

angle 6= 45 degrees

angle 7= 45 degrees

Step-by-step explanation:

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PLS HELP. this is due soon, only answer if you actually know it; no guessing for points please

OLga [1]

Answer:

102

Step-by-step explanation:

x = 180 - (4x - 2) - 78

x = 180 - 4x + 2 -78

5x = 180 + 2 - 78

5x = 104

x = $20\frac{4}{5}$ .

So, angle UTW is 4 * $20\frac{4}{5}$ - 2 + $20\frac{4}{5}$ = 5 * $20\frac{4}{5}$ - 2 = 104 - 2 = 102

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3 years ago

on a piece of paper, graph this system of equations. y = - x - 10 y = x^2 - 2x - 3 then determine which answer choice matches th

olasank [31]

Answer:

Option D. No solution

Step-by-step explanation:

We have the equation of a line:

$y = - x - 10$

We find their cut points.

Cut point with the y axis. (x = 0)

$y = -(0) -10\\y = -10$

Cut point with the x axis. (y = 0)

$0 = -x -10\\x = -10$ .

The line cuts to the x-axis at $x = -10$ and cuts the y-axis at $y = -10$

We have a parabola

$y = x ^ 2 - 2x - 3$

We can factor this quadratic equation by looking for 2 numbers that when multiplied give as result -3 and that when adding these numbers as a result -2. These numbers are -3 and 1.

Then the factors are:

$(x-3)(x + 1) = 0$

The zeros are 3 and -1. So the parabola cuts to the x axis at points 3 and -1.

Now we find the cut points with the y axis. (x = 0)

$y = (0-3)(0 + 1)\\y = -3.$

The parabola cuts to the axis y in y = -3.

Now we can graph the line and the parabola. Observe the attached image.

The system has no solution because the line and the parabola never intersect or touch each other. The answer is the option D

8 0

3 years ago

The radius of a circle is 7 inches. What is the area?

Basile [38]

Answer:

21.98

Step-by-step explanation:

7*3.16=21.98

3 0

3 years ago

Read 2 more answers

Which shows the expression x^2-1/x^2-x in simplest form

____ [38]

Answer:

$\large\boxed{\dfrac{x+1}{x}=1+\dfrac{1}{x}}$

Step-by-step explanation:

$\dfrac{x^2-1}{x^2-x}=(*)\\\\x^2-1=x^2-1^2\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\=(x-1)(x+1)\\\\x^2-x=(x)(x)-(x)(1)\qquad\text{use the distributive property}\\=x(x-1)\\\\(*)=\dfrac{(x-1)(x+1)}{x(x-1)}\qquad\text{cancel}\ (x-1)\\\\=\dfrac{x+1}{x}=\dfrac{x}{x}+\dfrac{1}{x}=1+\dfrac{1}{x}$

4 0

4 years ago

Read 2 more answers

Sketch. Kite qrst has a short diagonal of qs and a ling diagonal of rt. The diagonals intersect at point p. Side qr=5 m and diag

In-s [12.5K]

Answer
4m

Explanation
Δqrp is a right triangle.
If ps = 6m then, qp = 3m. So we can find line pr using pythagoras theorem.
rp = √(5²-3²) = √16 = 4m

The Δqrp≡Δqtp.

3 0

4 years ago