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kkurt [141]
3 years ago
11

14 What value of x makes this equation true? 12x - 15 = 6 - 3x Plsss help me and hurry

Mathematics
1 answer:
rodikova [14]3 years ago
5 0

Answer:

1.4

Step-by-step explanation:

12x+3x=15+6

15x=21

X=21/15

X=7/5 or 1.4

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Will give brainliest! 20 Points!<br> Hi! Some help with these problems would be great thank you!
erica [24]

Answer:

<u>Question 1:</u>

Draw a line that crosses the largest number of dots. Then use the line to check the best prediction of the number of baseballs that will be used if 275 pitches are thrown.

<u>Question 2:</u>

A). y = 1.2x - 6

<u>Question 3:</u>

J). y = \frac{9}{4}x - 81

<u>Question 4:</u>

F). f(n) = -3n + 24 *<em>Although it doesn't work when f(n) = 6 and n = 6*</em>

<u />

Step-by-step explanation:

<u>Question 2:</u>

The line passes throught point (5, 0) and is parallel to the line whose equation is y = 1.2x + 3.8

For parallel lines, their values of slope is the same.

So our line, that passes through point (5, 0), also has a slope of 1.2

Taking another point (x, y) on our line;

Slope = change in y ÷ change in x

1.2 = \frac{y - 0}{x - 5}

y = 1.2x - 1.2(5)

y = 1.2x - 6

<u>Question 3:</u>

The line passes x-axis at point (36, 0)

The line is perpendicular to another line whose equation is y = -\frac{4}{9}x + 5

For perpendicular lines, the product of their slopes = -1

Let's say the slope of our unknown line is a ;

Given: The slope of our second line is -4/9

So,

a × -4/9 = -1

a = -1 × -9/4 = 9/4

Taking another point (x, y) on our unknown line;

Slope = change in y ÷ change in x

9/4 = \frac{y - 0}{x - 36}

Cross-multiplying that you get;

y = \frac{9}{4}x - 81

<u>Question 4:</u>

The function that model that situation is f(n) = -3n + 24 though it doesn't work when f(n) = 6 and n = 6

3 0
4 years ago
Read 2 more answers
HELP ME ASAP PLEASE!!
fomenos

Answer:

x>1

Step-by-step explanation:

Make a line put number like

__________|____________________

-4 -3  -2  -1  0 1  2  3  4  5  6  7  8  9  10

4 0
3 years ago
Which expression is equivalent to -7/9
atroni [7]

The expression from the given options that is equivalent fraction -7/9 is -14/18.

<h3>What is a fraction?</h3>

Fraction can be described as the expression of numbers, which usually have the numerator and the denominator, and this do contains two integers arranged on each other.

From the given fraction,-7/9 if start o test the options by reducing them int their simplest form we will deduced that option B is correct because if we divide 14 by the factor of 2, and 18 by the factor of 2, then it will give us  -7/9 which is a negative value of fraction in the question.

Therefore, option B is correct.

Learn more about fraction at:

brainly.com/question/11562149

#SPJ1

Check the complete options

A. 14/18

B. -14/18

C.21/27

D.35/45

5 0
1 year ago
How many 3 digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is re
creativ13 [48]

Number of 3 digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is repeated is 20

A permutation is an act of arranging the objects or numbers in order. Combinations are the way of selecting the objects or numbers from a group of objects or collection, in such a way that the order of the objects does not matter.

Given,

The digits = 2,3,5,6,7 and 9

The number should be divisible by 5 and the digits cannot be repeated

When the unit digit of the number is either 5 or 0, then the number will be divisible by 5.

Number of possible ways to fill the unit place = 1

Number of possible ways to fill the tens place = 5

Number of possible ways to fill the hundredth place = 4

Number of three digit number can be formed =4×5×1=20

Hence, the number of 3 digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is repeated is 20

Learn more about permutation and combinations here

brainly.com/question/13387529

#SPJ4

3 0
2 years ago
The average weight of 7 potted plants is 23 pounds. An 8th potted plant is added to the pallet,
cluponka [151]

Answer:

The weight of the 8th plant is 39lb

Step-by-step explanation:

Given:

Average Weight of 7 plants = 23lb

Average Weight of 8 plants = 25lb

Required:

Weight of the 8th plant

To solve this, the total weight of the initial 7 plants need to be calculated;

Average = \frac{Sum-of-weights}{Number-of-Plants}

Substitute 23 for Average and 7 for Number of plants

23 = \frac{Sum-of-weights}{7}

Multiply both sides by 7

7 * 23 = \frac{Sum-of-weights}{7} * 7

161 = Sum-of-weights

Hence, the 7 plants weigh 161

Represent the weight of the 8th plant with E

When the 8th plant is added;

The sum of the weight becomes 161 + E

And the number of plants becomes 8

The average is calculated as thus

Average = \frac{Sum-of-weights}{Number-of-Plants}

25 = \frac{161 + E}{8}

Multiply both sides by 8

8 * 25 = \frac{161 + E}{8} * 8

200 = 161 + E

Subtract 161 from both sides

200  -161 = 161 - 161 + E

39 = E

Reorder

E = 39

Hence, the weight of the 8th plant is 39lb

6 0
3 years ago
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