Guys, Can you please help me with these questions

Answer:

  256.10

Step-by-step explanation:

You want the original price given the total amount is 307.32 and the tip rate is 20%.

Adding a tip multiplies the original price by (1 +tip rate). We can divide the total amount by this factor to find the original price:

  307.32/(1+0.20) = 256.10

The original price was 256.10.

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Answer:

Your answer should be A) 0.34.

Step-by-step explanation:

Look at the other 3 triangle above and compare it to the below triangle that only has 70°.

One of the triangles is similar to the triangle below that has 70°.

Using the Side Length value we get 3.4/10 = 0.34.

Answer:

Give performance an unfair advantage

The measurements that would work for the box is 10cm for the length, 15cm for the width and 5cm for the height.

The candy box has the shape of a rectangular prism. A rectangular prism is a is a three-dimensional shape with six faces, twelve sides and six verticies.

Volume = length x width x height

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Pull terms out from under the radical, assuming positive real numbers.

56

Have a good one :)

Answer:

39.74 %

Step-by-step explanation:

12 years - 11.5  = .5 years

.5 / 1.9 = .2631 S.D   above the mean

  From z-score table this corresponds to .6026

          60.26 are BELOW this life span

             39.74 % are above 12 years

I can only solve no.2

Step-by-step explanation:

CAB=ABC(ISCOSCELES TRIANGLE)

SO REPRESENT THEM BY X BECAUSE YOU DON'T KNOW THEM

THEIR SUM =180

SO,CAB+ABC+ACB=180

SUBSTITUTE THEIR VALUES

X+X+120=180

2X+120=180

2X=180-120

2X=60

[tex] \frac{2x}{2x} = \frac{60}{2 } [/tex]

cancel

so x is 30 degrees

Trust me

Answer: 2 and 4

Step-by-step explanation: They both have 3 x's

Answer:

Okay the mode means the most repeating number.

So if you write this all out:

1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4

You can now see that 3 is the most repeating number.

So 3 is the mode.

Step-by-step explanation:

Hope this helps!

From your neighborhood softie :)

Answer:

1548 unit^2

Step-by-step explanation:

The area each of the 2 bases

= width * height

=  17 * 12

= 204 unit^2

2 have area 408 unit^2

Area of the lateral rectangles = 2 * 13 * 19 = 494 unit^2

Area of the top and bottom  rectangles = 2 * 17 * 19 = 646 unit^2

Total surface area = 408 + 494 + 646

= 1548 unit^2.

The time taken by the rock to reach the lake below is 5.123 sec

t= 5.123 sec

A quadratic equation is an algebraic expression of the second degree in x. The quadratic equation in its standard form is [tex]ax^{2} +bx+c=0[/tex] where a, b are the coefficients, x is the variable, and c is the constant term.

It is given that,

H= [tex]-16t^{2} +32t+256[/tex], which represent the height of the rock

Also, we have given that the height of the cliff is 256 feet.

Now to find the time taken by the rock, take H=0

[tex]-16t^{2} +32t+256[/tex]=0

[tex]-16(t^{2} -2t-16) = 0[/tex]

[tex]t^{2} -2t-16 = 0[/tex]

[tex]t= \frac{-(b)\pm\sqrt{(b)^{2}- 4 *a*c } )}{2*a}[/tex]

From above equation, a=1, b=-2, c=-16

So,

[tex]t= \frac{-(-2)\pm\sqrt{(-2)^{2}- 4 *1*(-16) } )}{2*1}[/tex]

[tex]t= \frac{2\pm\sqrt{(4+64 } )}{2}[/tex]

[tex]t= \frac{2\pm\sqrt{(68 } )}{2}[/tex]

There will be two value one with positive [tex]t= -2+\sqrt{(68 } )[/tex] and another with negative [tex]t= -2-\sqrt{(68 } )[/tex]

We will neglect negative value because time can't be negative.

[tex]t= \frac{2+\sqrt{(68 } )}{2}[/tex]

[tex]t= \frac{2+8.246}{2}[/tex]

[tex]t= \frac{10.246}{2}[/tex]

t= 5.123 sec

The time taken by the rock to reach the lake below is t= 5.123 sec

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Answer:

interferances of the blood preser

Step-by-step explanation:

To solve this problem, we have to write out the simple harmonic motion equation and then use the respective formula to solve. The maximum kinetic energy, maximum potential energy and the maximum mechanical energy is equal to 7.56J.

The given equation of the simple harmonic motion is

[tex]x = 3.5sin(\frac{\pi}{2t} + \frac{5\pi}{4})\\[/tex]

Data;

Solving this

[tex]\frac{dx}{dt} = \theta = -3.5 * \frac{\pi}{2} cos (\frac{\pi }{2}t + \frac{5\pi}{4})\\[/tex]

Let's calculate the maximum velocity.

[tex]V_m = \frac{3.5\pi}{2}[/tex]

This is only possible when cos θ = -1

The maximum kinetic energy is

[tex]K_m = \frac{1}{2}mv_m^2 = \frac{1}{2}* \frac{500}{1000} * (\frac{7\pi}{4} )^2\\K_m = 7.56J[/tex]

The maximum kinetic energy is 7.56J

The maximum potential energy can be calculated as

[tex]\omega^2 = \frac{k}{m} \\k = \omega^2 m \\k = \frac{\pi^2}{4} * \frac{500}{1000}\\ k= 1.254 N/m[/tex]

Using the value of spring constant, we can find the maximum potential energy

[tex]P.E = \frac{1}{2}kx^2\\P.E = \frac{1}{2} * 1.234 * 3.5^2\\P.E = 7.56J[/tex]

The maximum potential energy is 7.56J

The maximum mechanical energy is equal to the sum of maximum potential energy and the maximum kinetic energy.

[tex]ME = P.E + K.E\\ME = 7.56J[/tex]

The reason ME is equal to 7.56J is because when x is at maximum, v = 0 and makes kinetic energy equal to zero.

ME = 7.56J

From the calculations above, the maximum kinetic energy, maximum potential energy and the maximum mechanical energy is equal to 7.56J.

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Answer:

(3,-9)

Step-by-step explanation:

Please give brainliest please and good luck :)

A circular cake pan that measures 8 inches across and 2 inches high. thus, the volume of a circular cake pan is 100.84 cubic inches.

The volume of the circular shape can be calculated as the product of the area and the height.

Given; a circular cake pan that measures 8 inches across and 2 inches high.

The radius will be 4.

The area of the circle = [tex]\pi r^{2}[/tex]

[tex]\pi \times 4^2\\\\3.14\times 16\\\\50.24[/tex]

The volume of a circular cake pan = area x height

                                                     [tex]50.24 \times 2\\ \\100.48[/tex]

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Answer:

140kilo in 1hr and 280kilo in 2hr and 420kilo in 3hr and 28kilo in 20 min.

Answer:

Area = 1

Step-by-step explanation:

I;ve attached my work below

Hope it helps, Let me know if you have any questions/concerns !

Have a nice rest of your day :)

Answer: 40x

Step-by-step explanation: addion multiplcation and divion

Answer:

Step-by-step explanation:

We note that the graph crosses the x- axis at the point (6 , 0)

Thus , g(6) = 0.

Answer:

15% of eighty is equal to twelve

Considering the parabolic equation, the equation for the directrix is given by x = 4.9375.

The equation of a horizontal quadratic function, of vertex (h,k), is given by:

(y - k)^2 = 4p(x - h)

The directrix is given by:

x = h - p.

In this problem, the equation is given by:

(y - 2)² = 0.25(x - 5).

Hence h = 5, p = 0.25/4 = 0.0625, hence the directrix is:

x = h - p = 5 - 0.0625 = 4.9375.

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Answer:

12.25.

Step-by-step explanation:

1) the formula of the volume given in the condition is:

V=2*2/7*10x.

2) If V=70, then

2*2/7*10x=70, where x=12.25.

Answer:

(10x)(7/4)(2)=70

=10x=70/7/4/2

=10x=20

x=2

Answer: 2

Step-by-step explanation:

Answer: Mean - 93.8571428571, round however you need to

Median - 75

Mode - 65

Range - 205

Step-by-step explanation: Order the numbers first. 45,65,65,75,77,80,250.

Find the mean. 45 + 65 + 65 + 75 + 77 + 80 + 250 is 657. Divide by 7 is 93.8571428571.

Median is middle. It is 75.

Mode is the most common. - 65

Range is the highest subtracted by the lowest. 250 - 45 is 205.

Answer:

[tex]x=\sqrt{15,} -5[/tex]

Step-by-step explanation:

Answer:

x=7 and y=3

Step-by-step explanation:

Step: Solve x−3y=−2 for x:

x−3y=−2

x−3y+3y=−2+3y(Add 3y to both sides)

x=3y−2

Step: Substitute3y−2for x in x+3y=16:

x+3y=16

3y−2+3y=16

6y−2=16(Simplify both sides of the equation)

6y−2+2=16+2(Add 2 to both sides)

6y=18

6y

6

=

18

6

(Divide both sides by 6)

y=3

Step: Substitute3foryinx=3y−2:

x=3y−2

x=(3)(3)−2

x=7(Simplify both sides of the equation)

Answer:

x=7 and y=3

Answer:

Step-by-step explanation:

2x = 14

x = 7

7 + 3y = 16

3y = 9

y = 3

(7, 3)

answer is A

Answer: 103, 134, 165, 196

Step-by-step explanation:

Second term: 72+31 = 103

Third term: 103+31 = 134

Fourth term: 134+31 = 165

Fifth term: 165+31 = 196

Answer:

tobe specific, it is 53.33%, but if you want just a whole #, it is 53%

Answer:

53.33%

Step-by-step explanation:

or 53% if rounded to the nearest whole

Answer:

Step-by-step explanation:

This question is based on the of expression. Therefore, the correct option is (A) that is, .

Given:

Expression :

We have to determined the expression is equivalent to the given expression.

According to the question,

It is given, to be assume that denominator does not equal zero.

Now by given expression, i.e.

Now, divide denominator by numerator we get,

Therefore, the correct option is (A) that is,