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cricket20 [7]
3 years ago
8

Im really struggling. please help me ​

Mathematics
2 answers:
butalik [34]3 years ago
6 0

Answer:

Heya here is your answer

Step-by-step explanation:

a) 3x = 18

  x = 18/3

  x = 6

b) 2x = 9

   x = 4.5

   x  = 4 1/2 ( in Mixed fraction)

c) x/5 = 7

   x = 7 x 5

   x = 35

d) x/2 = 6.5

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

   X/2 = 6.5 // - 6.5

   X/2-6.5 = 0

    1/2 X -6.5 = 0  + 6.5

    1/2X = 6.5  : 1/2

    X = 6.5/1/2

    X = 13

Hope this answer satisfies you

     

Wittaler [7]3 years ago
5 0

Answer:

A. x=6   B. x=4.5   C. x-35   D. x=13

Step-by-step explanation:

For A and B, divide the numbers you have. For C and D, multiply the numbers you have.

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Answer:

2.10 s, 10.40 s.

Step-by-step explanation:

We know that the height of the rocket is given by the function:

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The last is a quadratic equation, which can be put in the form at^2+bt+c=0 and solved applying the formula:

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So, let's put the equation on the form at^2+bt+c=0 adding 16t^2 and subtracting 200t to each side of the equation; the result is:

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So, we note that a=16, b=-200, and c=350.

Then,

t_1=\frac{200-\sqrt{200^2-4*16*350} }{2*16}=2.10

t_2=\frac{200+\sqrt{200^2-4*16*350} }{2*16}=10.40

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The growth of the plant last year was 25 inches if the normal growth was ten inches more than twice the amount of last year.

<h3>What is linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

The normal yearly growth of a plant is 60 inches.

Let's suppose the growth of the plant last year was x

The normal growth was ten inches more than twice the amount of last year.

From the above statement:

10 + 2x = 60

2x = 50

x = 25 inches

Thus, the growth of the plant last year was 25 inches if the normal growth was ten inches more than twice the amount of last year.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

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