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3 years ago

Help Me need help please it is due today please help ASAP

Mathematics

2 answers:

Leni [432]3 years ago

5 0

There are 47 minutes for soccer.

andriy [413]3 years ago

5 0

Answer:

Step-by-step explanation:

you subtract 3:32-2:45

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What is the following quotient

Likurg_2 [28]

Answer:

Rationalize the denominator by multiplying by the conjugate of (1 + √3), namely (1 - √3). this gives us

(1 - √3) / (1 - 3) or (1 - √3) / -2, which can be rewritten as

(-1 + √3)/2, the last answer choice.

7 0

3 years ago

Can anyone help me on that question too its math plsss

Assoli18 [71]

Answer:

2x= 40°

5x= 100°

Step-by-step explanation:

2x on opposite angle because it is an isosceles triangle

2x+ 2x+ 5x = 180° (angles of a triangle)

9x= 180

x= 180/9

x= 20°

Sub

2(20)= 40°

5(20)= 100°

7 0

3 years ago

PLS HELP THANK UUU!!!

Svetach [21]

Answer:

47.45754235

31.46697634

Hey do you need to show your work for these? I found an answer key

Step-by-step explanation:

We need to use law of cosines

c²=a²+b²-2abcos(C)

let x= angle xzy

plugging in what we have the equation looks like

17²=22²+20²-2*22*20*cos(x)

289=484+400-880cos(x)

.676136364=cos(x)

x=47.45754235

b.)

The smallest angle should be opposite to the smallest side

Using the law of cosines again we get

9²=13²+17²-2*13*17*cos(x)

81=458-442cos(x)

.852941176=cos(x)

x=31.46697634

6 0

3 years ago

Write the quadratic function f(x) = x2 - 5x + 3 in vertex form.

mixer [17]

So the vertex formula is A(X - H)^2 + K so find the vertex and plug all numbers in

this gives you (x - 2.5)^2 -3.25 = f(x)

4 0

3 years ago

2. y = -2x² + 8x<br>Axis of Symmetry:<br>Vertex:<br>Domain:<br>Range:

worty [1.4K]

Answer:

Part 1) The axis of symmetry is x=2

Part 2) The vertex is the point (2,8)

Part 3) The domain is all real numbers

Part 4) The range is all real numbers less than or equal to 8

Step-by-step explanation:

we have

$y=-2x^{2}+8x$

This is a vertical parabola open downward (because the leading coefficient is negative)

The vertex represent a maximum

step 1

Find the vertex

Convert the quadratic equation in vertex form

Factor -2 leading coefficient

$y=-2(x^{2}-4x)$

Complete the square

$y=-2(x^{2}-4x+4)+8$

rewrite as perfect squares

$y=-2(x-2)^{2}+8$

The vertex is the point (2,8)

step 2

Find the axis of Symmetry

we know that

In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex

the vertex is the point (2,8)

therefore

The axis of symmetry is x=2

step 3

Find the domain

The domain of the quadratic equation is the interval ------> (-∞,∞)

The domain is all real numbers

step 4

Find the range

The range of the quadratic equation is the interval ------> (-∞,8]

$y\leq 8$

The range is all real numbers less than or equal to 8

5 0

3 years ago