what’s 2/7x-7 = 9x-4

Answer:

12 42

Step-by-step explanation:

Answer:

The instantaneous velocity at t = 1 will be:

Step-by-step explanation:

Given the position of an object at a time [tex]t[/tex]

[tex]s\left(t\right)=-8-9t[/tex]

As we know that determining the derivative of the position function with respect to time t would give us the instantaneous velocity, so

[tex]\frac{ds}{dt}=\frac{d}{dt}\left(-8-9t\right)[/tex]

Applying the sum/difference rule:

[tex]\left(f\pm g\right)'=f\:'\pm g'[/tex]

[tex]\frac{ds}{dt}=-\frac{d}{dt}\left(8\right)-\frac{d}{dt}\left(9t\right)[/tex]

as

[tex]\frac{d}{dt}\left(8\right)=0[/tex]    ∵ [tex]\frac{d}{dx}\left(a\right)=0[/tex]

and

[tex]\frac{d}{dt}\left(9t\right)=9[/tex]   ∵ [tex]\mathrm{Take\:the\:constant\:out}:\quad \left(a\cdot f\right)'=a\cdot f\:'[/tex]  and [tex]\frac{d}{dt}\left(t\right)=1[/tex]

so the expression becomes

[tex]\frac{ds}{dt}=-\frac{d}{dt}\left(8\right)-\frac{d}{dt}\left(9t\right)[/tex]

   [tex]=-0-9[/tex]

   [tex]=-9[/tex]

As the derivative is constant.

Therefore, the instantaneous velocity at t = 1 will be:

Answer:

2 over 4

Step-by-step explanation:

First you find a point on the line that is a whole number then look for the next one on the line and us rise over run to find slope

Answer:

12

Step-by-step explanation:

Answer:

8x^2-6a+9b+14

Step-by-step explanation:

P=(12a^2 + 5a + 9b + 16)

(4a^2 + 9a - 8)+ (2a + 2b + 10) +(x)= (12a^2 + 5a + 9b + 16)

(4a^2+11a+2)+(x)=(12a^2 + 5a + 9b + 16)

subtract (4a^2+11a+2) from both sides

x= 8x^2-6a+9b+14

Answer:

ello luv

Step-by-step explanation:

Answer:

Michelle is closer to the treasure chest.

Step-by-step explanation:

If you didn't know, the smallest angle is opposite the smallest line, and it goes the same way for larger angles.

65 degrees is opposite Michelle's line, making her line shorter.

Answer:

18

Step-by-step explanation:

60% 0f 30 is 18

D. 18

Answer:

First of all, we can see that this shape have 4 90° angles.

Secondly, since x = 5 we have:

 3 × 5 -2 = 15 - 2 = 13 (cm)

And: 5 + 8 = 13 (cm)

=> The two adjacent sides that make up the angle is equal to each other

So this shape is a quare.

=> This shape is a square.

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

81%  or .81

Explanation:

243 ÷ 300 = .81

Answer:

Once an expression has been factored, use the Distributive Property to expand the expression. The expanded expression should be the original expression.

Step-by-step explanation:

The distributive property for any binary operation Ф under * in the given set S where a, b, c ∈ S

The binary operation a * (b Ф c) = (a * b) Ф (a * c) .

The operation * distributes over the operation Ф.

Now, when factoring, suppose we have an expression ab + ac. To factor this, we have a(b + c).

To check that our answer is correct, since the expression has been factored, we then distribute the multiplication over the addition to check if the factorization is correct.

So, a(b + c) = ab + ac which is our initial expression.

So, to use the distributive property to check work when factoring, once an expression has been factored, use the Distributive Property to expand the expression. The expanded expression should be the original expression.

The way to use the Distributive Property to check your work when factoring is;

Option D; Once an expression has been factored, use the Distributive Property to expand the expression. The expanded expression should be the original expression.

The distributive property in algebra is expressed as; a(b + c) = ab + ac

Now, to use the distributive property to check the work when factoring, we have to expand the factored form first.

For example, we have; 2(3 + 4)

From distributive property, we have;

(2 × 3) + (2 × 4) = 14

This should be the same with the original factored expression; 2(7) = 14

Thus, the method is Once an expression has been factored, use the Distributive Property to expand the expression. The expanded expression should be the original expression.

Read more about distributive property at; https://brainly.com/question/2807928

Answer:

The distance between the starting point and the end point

Step-by-step explanation:

Answer:

120+ 4(square root)15

120+15.49=135.49

135.49 is the perimeter

The perimeter of the triangle having two angles 60 degrees, 60 degrees, and one side [tex]4\sqrt{15}[/tex] is, [tex]12\sqrt{15}[/tex] or 46.47

Perimeter is a mathematical term, which means total outer boundary of a figure, we define it only for two dimensional figures.

Perimeter = Sum of length of the all the sides

Given that,

the triangle having two angles 60 degrees, 60 degrees,

and one side

It is known that, total sum of all the angles of triangle is 180°

A = 60°

B = 60°

C = ?

A + B + C = 180°

60° + 60° + C =  180°

C =60°

Hence, it is a equilateral triangle

And for equilateral triangle length of all sides are equal

a =  [tex]4\sqrt{15}[/tex]

b =  [tex]4\sqrt{15}[/tex]

c =   [tex]4\sqrt{15}[/tex]

Perimeter =  [tex]4\sqrt{15}[/tex] +  [tex]4\sqrt{15}[/tex] +  [tex]4\sqrt{15}[/tex]

Perimeter = 12√15

So, the perimeter is 12√15

To know more about Perimeter check:

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#SPJ1

Answer:

C

Step-by-step explanation:

Answer:

40%

Step-by-step explanation:

0.15+0.25=0.40 which equals 40%

Answer:

Man I wish I knew

Step-by-step explanation:

Answer:

The first answer is not helpful at all

Answer:

D. 2

Step-by-step explanation:

5(2x-6) + 20 = 10

10x - 30 + 20 = 10

10x - 10 = 10

10x = 20

x = 2

Answer:

B

Step-by-step explanation:

Answer:

The question has two correct answers A and B.

Step-by-step explanation:

A is the component form of a vector

B is words

Answer:

[tex]\huge\boxed{\text{18 boys}}[/tex]

Step-by-step explanation:

This is basically just a ratio. If the ratio between the amount of girls to the amount of boys is 8 to 6, then we can create a fraction (girls/boys)

[tex]\frac{8}{6}[/tex]

Using what we know about the second statement (24 girls) we can make a ratio like this (also assuming girls/boys)

[tex]\frac{24}{x}[/tex]

Since the ratios must be equal, we can set them equal to each other.

[tex]\frac{8}{6} = \frac{24}{x}[/tex]

We can cross multiply to find x.

[tex]24 \cdot 6 = 144\\\\144 \div 8 = 18[/tex]

So there are 18 boys.

Hope this helped!

Answer:

76.1

Step-by-step explanation:

y = ice cream

z = Tempreature

y = 1.8(85) - 76.9

1.8(85) = 153

153 - 76.9 = 76.1

Answer:

76

Step-by-step explanation:

y = 1.8(85) - 76.9

y = 153 - 76.9

y = 76.1

and when you round to the nearest whole number,

y = 76

Answer:

10% chance

Step-by-step explanation:

Answer:

Random numbers can be quickly and easily generated by using the graphing calculator.

Step-by-step explanation:

Answer:

I can’t really answer this because you didn’t show a picture. Here’s a thought though. Look up a shape chart on google and work from there. Hope this helps you out

Answer:

23

Step-by-step explanation:

supplementary angles: 180-85 = 95

95 = 5x-20 ( i forgot the name of the rule, something relating to same side interior angles i think)

115 = 5x

23= x

hope that helped

Answer:

B. The square root of 34 is an irrational number.

Step-by-step explanation:

The square root of 34 is a rational number if 34 is a perfect square.

Since 34 is not a perfect square, it is an irrational number.

Since the square root of 34 is not a perfect square, hence, the square root of 34 is an irrational number: Option B is correct.

Irrational numbers are numbers that cannot be written as a ratio of two integers.

Since the square root of 34 is not a perfect square, hence, the square root of 34 is an irrational number.

Learn more here: https://brainly.com/question/11864029

Answer:

m∠ACB = 39°

m∠BCD = 81°

m∠ACE = 60°

Step-by-step explanation:

From the picture attached,

m∠ACD = 120°

Since, m∠ACD = m∠ACB + m∠BCD

x + (2x + 3) = 120°

3x + 3 = 120

3x = 117

x = 39

Therefore, m∠ACB = 39°

m∠BCD = (2x + 3) = 2(39) + 3

             = 81°

Since, m∠ACE +  m∠ACB + m∠BCD = 180° [Angles formed at a point on a straight line]

m∠ACE + 39 + 81 = 180

m∠ACE = 180 - 120

m∠ACE = 60°

Answer:

9 is your answer. It's a simple equation.

Answer:

Step-by-step explanation:

when you have a negative exponent, you are going to have a fraction. Example: 2^4 * 2^-4= 2^4 is 16 2^-4 is 1/16.

You get the 16 but because it was a negative exponent, the 16 goes on the bottom. 16 as a fraction is 16/1.

When you multiply 16/1 and 1/16. It comes up to 16/16 or 1.

Does this help?

Answer:

below

Step-by-step explanation:

We can use the product rule of exponents to solve [ x^y * x^z = x^y+z ].

x^4 * x^-4 = 1

x^4+(-4) = 1

x^0 = 1

1 = 1

Best of Luck!

Answer:

x=7 A=41

Step-by-step explanation:

You do 180-69=111. You know that 11x-7 goes inside and then you do 11x-7+4x+13=111. You get x=7. Multiple 4x7=28+13=41