10 points:) please help i keep getting the wrong answer

Answer:

The amplitude is 3 and the period is 10π/9.

Step-by-step explanation:

The standard cosine function is in the form:

[tex]y=a\cos(b(x-c))+d[/tex]

Where |a| is the amplitude, 2π/b is the period, c is the phase shift, and d is the vertical shift.

We have the function:

[tex]f(x)=\displaystyle 3\cos\frac{9}{5}t[/tex]

We can rewrite this as:

[tex]\displaystyle f(x)=(3)\cos\left(\frac{9}{5}\left(t-0\right)\right)-(0)[/tex]

Therefore, a = 3, b = 9/5, c = 0, and d  = 0.

Hence, our amplitude is |3| = 3.

Our period will be:

[tex]\displaystyle \text{Period}=\frac{2\pi}{9/5}=2\pi \cdot \frac{5}{9}=\frac{10\pi}{9}[/tex]

Answer:

The answer is below

Step-by-step explanation:

Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, dilation and translation.

Translation is the movement of a point either up, down, right or left in the coordinate plane. If a point A(x, y) is moved a units up and b units right, then the new point is at A'(x + b, y + a).

Given that the knight is moved from (3, 2) to (5, 1), hence it is moved 2 squares right and 1 square down.

If the knight is moved from (5, 1) to (6, 3), it is moved 1 square right and 2 squares up.

Answer:

7x + 6 = - 48

Step-by-step explanation:

Given

[tex]\frac{7}{8}[/tex] x + [tex]\frac{3}{4}[/tex] = - 6

Multiply through by 8 ( the LCM of 8 and 4 ) to clear the fractions

7x + 6 = - 48 ← same equation without fractions

Answer: Graph D

Step-by-step explanation:

v= 8 km

refer to the attachment for explaination

Answer:

x = 3

Step-by-step explanation:

8x- 5= 19

8x= 19+5

8x= 24

x= 24/ 8

x= 3

Answer:

x = 21

Hope that this helps!

Answer:

x+4 + 3x +2

x+3x+4+2

4x+6

4x+6=90

4x=90-6

4x=84

4x/4 = 84/4

x= 21

[tex] - \frac{2}{3} a + 6 = - 14[/tex]

[tex](3)( - \frac{2}{3} a + 6) = ( - 14)(3)[/tex]

[tex] - 2a + 18 = - 42[/tex]

[tex] - 2a + 18 - 18 = - 42 - 18[/tex]

[tex] - 2a = - 60[/tex]

[tex] - 2a \div - 2 = - 60 \div - 2[/tex]

[tex]a = 30[/tex]

Explanation:

Vertical angles are always opposite one another, and they form after intersecting two lines. Vertical angles are always congruent (i.e. the same measure).

Answer:

x = 40

Step-by-step explanation:

Given 2 secants from an external point to the circle, then

The product of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant, that is

8(8 + x) = 12(12 + 20)

8(8 + x) = 12 × 32 = 384 ( divide both sides by 8 )

8 + x = 48 ( subtract 8 from both sides )

x = 40

Answer:

Step-by-step explanation:

f(x)= x²

the shape of f (x ) and g( x ) is same.

and those graphs lower point is ( 0 , 0 )

therefore,

will, g(x) = kx²    (k ∈ real numbers)

the g(x) graph goin through the point ( 1 , 4 )

therefore,

4 = k × 1²

k = 4

∴ g(x) = 4x²

Answer:

Slope = rise/run

Rise = 0

So zero divided by any run is 0.

B

Answer:

B

Step-by-step explanation:

slope or gradient = rise/run

rise=0 0/anything= 0

Line B has no graidient so it is considered as 0.

Answer:

the solution is the whole line y = -x + 7

Step-by-step explanation:

both equations are identical

2y = 14 - 2x

=> y = 7 - x

which is exactly the same information as y=-x+7

so, there is no single crossing point. they are exactly covering each other. what "remains" is simply the whole line.

Answer:

B. Decreasing

Step-by-step explanation:

From the table, we can see that as variable x increases, variable y decreases relatively.

If the data points are plotted on a scatter plot, the trend line would be sloping downwards from our left to our right. This shows that the trend line is decreasing because the sloping downwards from the left to the right shows implies a decrease.

Answer:

Step-by-step explanation:

125=2x+17(being vertically opposite angle)

125-17=2x

108/2=x

54=x

Answer:

graph b represents a function.

Answer:

graph b

Step-by-step explanation:

both triangles are isosceles

done!

Answer:

(-infinity, -2) and (0, 4)

Step-by-step explanation:

If the graph is above the x-axis, the function is positive; if below, negative.

The function shown in the graph is positive on the intervals (-infinity, -2) and (0, 4).

Answer:

b

Step-by-step explanation:

that's easy dubs sjdidueieiei

Answer:

this is a trapezoidal prism

Answer:

1

Step-by-step explanation:

Yes the answer is just 1

Since the power of 2 in the inside will be multiplied by the power of the 4 in the outside will be 8 (The number 11 doesn't change)

A power divided by a power that is equivalent to it is 1

Answer:

The answer would be C. hope it helps goodluck

Answer:

[tex]\text{5. } 22\text{ gallons},\\\text{6. }8.5344\:\text{m or }8.5\text{ m rounded to the nearest tenth},\\\text{7. }49^{\circ}\mathrm{C}[/tex]

Step-by-step explanation:

Question 5:

Use the conversion [tex]1\:\mathrm{liter}=0.264172\:\mathrm{gallon}[/tex] to convert from liters to gallons:

[tex]85\cdot 0.264172\approx \boxed{22\:\text{gallons}}[/tex]

Question 6:

Use the conversion [tex]1\text{ foot}=0.3048\text{ meters}[/tex] to convert from feet to meters:

[tex]28\cdot 0.3048=\boxed{8.5344\:\mathrm{m}}[/tex]

Question 7:

Use the conversion [tex]x^{\circ}\text{F}\implies \frac{5}{9}(x-32)^{\circ}\text{C}[/tex] to get:

[tex]120^{\circ}\text{F}=\frac{5}{9}(120-32)^{\circ}\text{C}=\frac{5}{9}(88)^{\circ}\text{C}\approx \boxed{49^{\circ}\text{C}}[/tex]

Answers:

============================================================

Explanation:

Let's use the slope formula to get

m = (y2-y1)/(x2-x1)

m = (6-4)/(5-2)

m = 2/3

The slope of the line is 2/3.

We can see that the responses for choices 1 and 3 are "no" because they involve a slope of 3/2.

-------------

Recall that y-y1 = m(x-x1) represents the point slope form. The m is the slope and (x1,y1) is the point the line goes through.

If we plugged the point (x1,y1) = (2,4) , along with the slope m = 2/3, then we'll get to what choice 2 is saying

If we tried the other point (5,6), and kept m the same, then we'd get to choice 4.

That makes choices 2 and 4 "yes" responses.

Answer:

3 hours 39 minutes

Step-by-step explanation:

6 to 10 = 4 hours

35 to 14 = -21

4 x 60 = 240

240 - 21 = 219

220 to hours and minutes = 3 hours and 39 minutes

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Given:

The two points C(2,-1) and D(5,3) on a coordinate plane.

To find:

The distance from C to D.

Solution:

The distance between two points is defined by the distance formula.

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

The two points are C(2,-1) and D(5,3). Using the distance formula, we get

[tex]CD=\sqrt{(5-2)^2+(3-(-1))^2}[/tex]

[tex]CD=\sqrt{(3)^2+(3+1)^2}[/tex]

[tex]CD=\sqrt{(3)^2+4^2}[/tex]

On further simplification, we get

[tex]CD=\sqrt{9+16}[/tex]

[tex]CD=\sqrt{25}[/tex]

[tex]CD=5[/tex]

The distance from point C to D is 5 units. Therefore, the correct option is A.

Answer:

85 square inches

Step-by-step explanation:

[tex]5*5=25[/tex]

[tex]5*6=30*2=60[/tex]

[tex]25+60=85[/tex]

Hope this is helpful

Step-by-step explanation:

for me u need to change in grams

so

3kg=3000g

1.5kg+850g=2350g

so take

(3000-2350)g

ans=650g

Answer:

The answer should be m < -2.5

Step-by-step explanation:

I was taught this before and my teacher always said if its a open circle then its > or < if its a closed circle then it should have the line under it, and the line is going down so it would be Less than sign