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3 years ago

What is the valuable of x in the equation 1.8-3.7x=-4.2x+0.3

Mathematics

1 answer:

Mumz [18]3 years ago

4 0

Answer:

x = 3

Step-by-step explanation:

1.8 - 3.7x = -4.2x + 0.3

add -4.2x to both sides

1.8 - 0.5x = 0.3

subtract 1.8 from both sides

-0.5x = 0.3 - 1.8

-0.5x = -1.5

divide by -0.5 on both sides

x = 3

GREAT JOB!!!! YOU GOT IT!!! =)

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A 14- inch pepperoni pizza is sliced into 8 equal pieces. One slice contained 352 calories. Write and solve a division equation

tankabanditka [31]

<em><u>Division equation is:</u></em>

$\frac{c}{8} = 352$

There are 2816 calories in whole pizza

<em><u>Solution:</u></em>

Given that,

A 14- inch pepperoni pizza is sliced into 8 equal pieces

One slice contained 352 calories

Therefore,

1 slice = 352 calories

Let "c" be the calories

Given that there are 8 equal pieces

<em><u>Therefore, calories in 8 pieces are:</u></em>

Calories in 8 pieces = 8 x calories in 1 piece

$c = 8 \times 352$

Thus the division equation is:

$\frac{c}{8} = 352$

Therefore,

$c = 352 \times 8 = 2816$

Thus there are 2816 calories in whole pizza

8 0

3 years ago

How many thirds are there in 10

Inessa [10]

Answer:

There are three and 1/3

Step-by-step explanation:

it is simple plainly obvious

3 0

3 years ago

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Isaac keeps track of the miles per gallon his car gets per week. He has accumulated the following data:

ipn [44]

we know that

A <u>geometric sequence</u> is a sequence of numbers in which the ratio between consecutive terms is constant

Let

$a1=24 \ a2=24.48\ a3=24.97\ a4=25.47$

$\frac{a2}{a1} = \frac{24.48}{24}= 1.02$

$a2=a1*1.02$

$\frac{a3}{a2} = \frac{24.97}{24.48}= 1.02$

$a3=a2*1.02$

$\frac{a4}{a3} = \frac{25.47}{24.97}= 1.02$

$a4=a3*1.02$

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<u>the answer is</u>

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3 years ago

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V125BC [204]

Answer:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or m = 2/3 - (π n_2)/18 for n_2 element Z

Step-by-step explanation:

Solve for m:

-cos(7 m + 2) sin(12 - 18 m) = 0

Multiply both sides by -1:

cos(7 m + 2) sin(12 - 18 m) = 0

Split into two equations:

cos(7 m + 2) = 0 or sin(12 - 18 m) = 0

Take the inverse cosine of both sides:

7 m + 2 = π n_1 + π/2 for n_1 element Z

or sin(12 - 18 m) = 0

Subtract 2 from both sides:

7 m = -2 + π/2 + π n_1 for n_1 element Z

or sin(12 - 18 m) = 0

Divide both sides by 7:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or sin(12 - 18 m) = 0

Take the inverse sine of both sides:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or 12 - 18 m = π n_2 for n_2 element Z

Subtract 12 from both sides:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or -18 m = π n_2 - 12 for n_2 element Z

Divide both sides by -18:

Answer: m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or m = 2/3 - (π n_2)/18 for n_2 element Z

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3 years ago

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borishaifa [10]

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