MATHEMATICS MIDDLE SCHOOL

What is a related equation to this equation?18/a = 7

A. a = 7/18

B. a + 7 =18

C. a = 18/7

D. a = 18 * 7

Answers

Answer 1
Answer: Simple.....

you have (18)/(a) =7

to find what a is....simplify/multiply both sides....

a* (18)/(a) =7*a

simplifying it too....

18=7a

(18)/(7) = (7a)/(7)

(18)/(7) =a

Thus, your answer, C.

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The formula for the volume of a cone is V = 1/3 b × h... b is the area of the base of the cone. The base of the cone is a circle, so we have to use the area of a circle formula... A = pi × radius^2 So first let's find the area of the base... a = pi × radius^2 a = 3.14 × 12^2 (diameter is 24 so radius is 12) a = 3.14 × 144 a = 452.16 in^2 Now we can plug that into the volume of a cone formula... v = 1/3 b × h v = 1/3×452.16 in^2 × 10 in v = 150.72in^2 × 10 in V = 1507.2 in^3

4x + 12 = -7y
-y + 12 = 4x
Solve with elimination

Answers

Take the second equation and flip it around so the y on the left ends up on the right and the 4x on the right ends up on the left.  This makes all negatives positive and all positives negative.   -4x   + 12  = y 

Then add the first equation to the second equation 
4x   +12   = -7y
-4x   + 12  = y    this eliminates the x's
          24 = - 6y            then divide by - 6
           - 6     - 6
         - 4    = y

So if you know that y = negative 4, you can substitute into either equation.  I pick the second one because I am a lazy person.  
  -y  + 12  = 4 x
-(-4) + 12 = 4 x     combine your numbers
     16      = 4 x        then divide by 4
       4      =  x
So your solution is: x = 4 and y = -4 or this is also written (4, -4)

Does that work for you?
\begin{cases}4x + 12 = -7y \n -y + 12 = 4x \end{cases} \n \n\begin{cases}4x + 7y = -12 \n -4x-y =-12 \end{cases} \n+ ------- \n6y=-24\ \ /:6\n \ny=-(24)/(6)\n \ny=-4

4x+12=-7y\n \n 4x+12=-7*(-4)\n \n4x=28-12\n \n4x=16\ \ /:4\n \nx=(16)/(4)\n \n x=4 \n \n \begin{cases}x=4 \n y=-4 \end{cases}

Find the sine angle of Y.

Answers

Answer:

15/17

Step-by-step explanation:

sin theta = opposite side/ hypotenuse

sin y = 30/34

Divide top and bottom by 2

sin Y =15/17

Answer:

(15)/(17)

Step-by-step explanation:

sinY = (opposite)/(hypotenuse) = (30)/(34) = (15)/(17)

A farmer needs to mix 12 ounces of fertilizer for every 10 pounds of soil. How many pounds of fertilizer fill the farmerneed to make a mix that contains 120 pounds of soul?
2304

Answers

100lbs of soil= 120 oz of fertilizer
20lbs of soil= 24oz of fertilizer
120+24= 144oz of fertilizer
120lbs of soil needs 114oz of fertilizer

Answer:

100lbs of soil= 120 oz of fertilizer

20lbs of soil= 24oz of fertilizer

120+24= 144oz of fertilizer

120lbs of soil needs 114oz of fertilizer

According to exponent rules, when we raise the power to a power we ____ the exponentsa.add
b.subtract
c.multiply
d.divide

Answers

According to the exponent rules, when you raise a power to another power, you c. multiply the exponents. So, the correct option is c. multiply.

According to the exponent rules, when we raise a power to another power, we multiply the exponents.

This fundamental rule is known as the "Power of a Power Rule" in exponentiation. It can be expressed as:

Where:

a is the base.

m is the exponent of the base raised to another power.

n is the exponent to which the previous result is raised.

This rule demonstrates how to simplify expressions where a base is raised to an exponent, and that result is further raised to another exponent. Instead of adding or subtracting the exponents, you multiply them together. This makes intuitive sense when you consider that exponentiation represents repeated multiplication.

for such more question on exponent rules

brainly.com/question/11975096

#SPJ2

Answer:

According to exponent rules, when we raise a power to a power we multiply the exponents.

Step-by-step explanation:

Example:

(3³)² = 3³*² = 3⁶

When baking a cake, you have a choice of the following pans:a round cake pan that is 2 inches deep and has a 7 inch diametera 6 inch x 9 inch rectangular cake pan that is 2 inches deepa. Which of these pans has the larger volume? Justify your answer.b. Excluding the bottom of the cake, what is the surface area ofeach cake that willbe covered by frosting? Justify your answer.

Answers

So, Lets Find The Volumes. Lets Find The Rectangular Pan's First. We Have To Do 6*9*2 For The Volume. 6*9 = 54. Now, Lets Multiply By Two. 54*2 = 108. So, The Rectangular Pan Is 108 in.^3. Now, Lets Do The Cylinder. We Do 3.14*(7/2*7/2) * 2. 7/2 = 3.5. 3.5*3.5 = 12.25. Now, Do 12.25*3.14. This Gives You 38.465. Now, Multiply By 2. This Gives You 76.93. Now, We Have Found A To Be The Bigger Cake Volume Would Be Made In The Rectangular Pan. 
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