Simplify 4 (x3 – 3y2) – 2 (3x3 – 5y2)

Answer:

x=4

Step-by-step explanation:

here's our equation: 3x=x+8

Our goal: to isolate x onto one side with nothing else on that side.

x is on both sides; we can subtract x from both sides to make the variables and numbers be on different sides

2x=8

Now we can divide by 2

x=4

Hope this helps! :)

3x = x + 8

Step 1: Subtract x from both sides.

3x−x=x+8−x

2x=8

Step 2: Divide both sides by 2.

2x /2  =  8 /2

x = 4

Answer:

x = 4

Answer:

There are 659 blocks

Step-by-step explanation:

The number of blocks has 9 in the ones place.

The number in the hundreds place is one more that the number in the tens place.

Let the number in the tens place is x.

Number in the hundreds place = 1+x

These two numbers equal 11.

ATQ,

x+1+x = 11

2x + 1 = 11

2x = 10

x = 5

No in the tens place = 5

No. in the hundreds place = 1+5 = 6

Hebnce, the number is 659.

Answer:

okay, so you put 14/20 as a fraction, and find out the percent. that is 70%. then you find 70% of 100, which is 70.

Answer:

non linear

Step-by-step explanation:

This situation can be represented as y=x^3 where y is the volume of the cube x is the length of its side. We find that the slope for this curve(change in y/change in x) is not constant for all points on the curve. Thus it is a non linear function.

Answer:

138

Step-by-step explanation:

5x+2+6x+90=180

11x+92=180

11x=88

x=8

5(8)+2. = 42

180-42= 138

Answer:

the rate of change is 7.

Step-by-step explanation:

The rate of change of the balance of the student's savings account in dollars and cents per week is 7.

Suppose that we have to measure the rate of change of y as x changes, then we have:

[tex]Rate = \dfrac{y_2 - y_1}{x_2 - x_1}[/tex]

Remember that, we have to divide by the change in an independent variable so that we get an idea of how much the dependent quantity changes as we change the independent quantity by 1 unit.

We have given the table of saving accounts, then the rate will be;

[tex]Rate = \dfrac{39 - 32}{1 - 0}\\Rate = \dfrac{7}{1 }[/tex]

Therefore, the rate of change of the balance of the student's savings accounts in dollars and cents per week is 7.

Learn more about the rate of change here:

https://brainly.com/question/19167959

#SPJ6

Answer:

never heard of them

and the answer is choice B.

Step-by-step explanation:

alternate exterior angles have the same measure

Answer:

It is located 3 to the right and 4 up or in the second quadrant

Step-by-step explanation:

Answer:

See the image that has been attached.

Step-by-step explanation:

On a coordinate plane, the x value is always first in a coordinate pair. The y value is second.

This means that -3 is the x value. X values go left and right, so -3 is three left from 0,0.

The same goes for the y value. Since the y value is 4, the y value is 4 is 4 up from 0,0.

Answer:

a

Step-by-step explanation:

Answer:

Step-by-step explanation:

C

40*.20=8

40-8=32

32*.05=1.60

32-1.60=30.4

Answer:

Step-by-step explanation:

From the given right-angle triangle

The angle = ∠60°

The hypotenuse = 6

Using the trigonometric ratio

cos 60° = adjacent / hypotenuse

substituting adjacent = x and hypotenuse = 6

cos 60° = x / 6

6 × cos 60° = x

x = 3

Thus, the value of x is:

And using the trigonometric ratio

sin 60° = opposite / hypotenuse

substituting opposite = y and hypotenuse = 6

[tex]sin\:60^{\circ }\:=\:\frac{y}{6}\:[/tex]

[tex]y=6\:\times\:sin\:60^{\circ }[/tex]

   [tex]=6\times \frac{\sqrt{3}}{2}[/tex]                   ∵ [tex]\sin \left(60^{\circ \:}\right)=\frac{\sqrt{3}}{2}[/tex]

   [tex]=3\sqrt{3}[/tex]

Therefore, the value of y is:

Summary:

Answer:

x = 136.73 feet

Step-by-step explanation:

Given that,

Henry is flying a kite. The kite makes an angle of 43 with the ground. If henry is standing 100 feet from a point on the ground directly below the kite.

We need to find the length of the kite string. It can be calculated by using trigonometry.

The length of the string will be hypotenuse, 100 feet is the base.

The relation between the hypotenuse, base and angle with the ground is given by :

[tex]\cos\theta=\dfrac{\text{base}}{\text{Hypotenuse}}\\\\\cos(43)=\dfrac{100}{x}\\\\x=\dfrac{100}{\cos(43)}\\\\x=136.73\ \text{feet}[/tex]

So, the length of the kite string is 136.73 feet.

Answer:

A

Step-by-step explanation:

[tex]\sqrt{22}[/tex] · 5[tex]\sqrt{2}[/tex] = 5 [tex]\sqrt{44}[/tex] = 5 [tex]\sqrt{4}[/tex]·[tex]\sqrt{11}[/tex] = 10[tex]\sqrt{11}[/tex]

Answer:

The answer is C

Answer:

= 0.0016

Step-by-step explanation:

anything times one is the same number

Answer:

its the first one

Step-by-step explanation:

Answer: 3/5, because there are 2 even numbered papers and 3 odd numbered papers

Answer:

60%

Step-by-step explanation:

You first divide the amount you have (5) from 100. You end up with 20 and then you multiply 20 by the number of odd numbers (3) and you end up with 60%

Answer:

23(2+7y-())=0

Step-by-step explanation:

(10+13)(2+7y=)

We move all terms to the left:

(10+13)(2+7y-())=0

We add all the numbers together, and all the variables

23(2+7y-())=0

Answer: something +9

Step-by-step explanation:

Answer:

The height is 3791 ft.

Step-by-step explanation:

You need to make a drawing. Start with a vertical segment, 2 inches long, on the left side of the page. Label the top point A and the bottom point B. At the bottom endpoint, draw a longer horizontal segment, 4 inches long, to the right. Label the bottom right endpoint C. Connect A and C with a segment. Angle C is the original angle of elevation. On the bottom horizontal side, approximately 1 inch to the left of C, draw point D. Connect D and A with a segment. DA = 1000 ft. m<C = 34.8°. m<ABD = 40.4°. We are looking for AB, the height of the volcano.

We can work on triangle ADC.

m<C = 34.8°

Angles ADB and ADC are a linear pair, so m<ADC = 180° - 40.4° = 139.6°

m<DAC + m<ADC + m<C = 180°

m<DAC + 139.6° + 34.8° = 180°

m<DAC = 5.6°

Using the law of sines, we can find AC.

[tex] \dfrac{\sin A}{a} = \dfrac{\sin B}{b} [/tex]

[tex]\dfrac{\sin 5.6^\circ}{1000} = \dfrac{\sin 139.6^\circ}{AC}[/tex]

[tex]AC = \dfrac{1000\sin 139.6^\circ}{\sin 5.6^\circ}[/tex]

[tex] AC = 6642~ft [/tex]

Now we use triangle ABC. AC = hypotenuse. AB = opposite leg. <C is known angle.

[tex] \sin C = \dfrac{opp}{hyp} [/tex]

[tex]\sin 34.8^\circ = \dfrac{AB}{6642~ft}[/tex]

[tex]AB = 6642~ft \times \sin 34.8^\circ[/tex]

[tex] AB = 3791~ft [/tex]

Answer: The height is 3791 ft.

Answer:

$156.25

Step-by-step explanation:

$125. × 25% = $31.25

$125.00+$31.25=$156.26

Answer:

156.25

Step-by-step explanation:

(125*0.25)+125=x=156.25

Answer:

Reflection

Step-by-step explanation:

Answer:

i think its c

Step-by-step explanation:

Hope this helps!!

in right angle traingle two angle are equal

so.x=y

in triangle

x+y+90=180(sum of interior angle of triangle)

2x=180-90

x=90/3=45°

Answer:

C

Step-by-step explanation:

Answer:

okay that's not a question

Step-by-step explanation:

so no

Answer:

y=0

Step-by-step explanation:

Answer:

I just need popints

Step-by-step explanation:

I just need points

Answer: R=3 Bracelets per HR

O=2 Bracelets per HR

Step-by-step explanation: She can go faster

Answer:

48

Step-by-step explanation:

Given that:

[tex]A \ score \ of \ 60 \ falls \ two \ standard \ deviations \ above \ the \ mean \\ \\ A \ score \ of \ 42 \ falls \ one \ standard \ deviation \ below \ the \ m ean[/tex]

The interval for score = 60 - 42 = 18

If we divide it by the 3 standard deviations; the interval result into

= 18/3

= 6

So, the standard deviation is 6, and the mean = 42 + 6

= 48

Answer:

51

Step-by-step explanation:

Answer:

99/34 i believe

Step-by-step explanation: