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serg [7]
3 years ago
7

Simplify -4(6x-7)-3(4+2x). What's the answer?

Mathematics
2 answers:
damaskus [11]3 years ago
8 0

Answer: The answer to the question is -30x + 16

algol133 years ago
5 0

Answer:

x = -16/-30 or x = .54

Step-by-step explanation:

-4(6x - 7) - 3(4 + 2x)

-24x + 28 - 12 - 6x

combine like terms

-30x + 16

subtract 16 from both sides

-30x = -16

divide by -30

x = -16/-30 0r x = .54

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DEF with vertices D(2, 5), E(6, 4), and F(3, 3), is reflected across the line y=x
snow_tiger [21]
The student's answer is wrong. When a point (a, b) is reflected across the line y=x, the coordinates of the new point is reversed to (b, a). So D(2, 5) would become (5, 2), E(6, 4) would become (4, 6), and F(3, 3) is still (3, 3). None of the new points is (2, -5).
4 0
3 years ago
The Johnsons want to cover their backyard with new grass. Their backyard is rectangular, with a length of 3x – 5 feet and a widt
kolezko [41]

Answer:

Step-by-step explanation:

The formula for determining the area of a rectangle is expressed as

Area = length × width

Their backyard is rectangular, with a length of 3x – 5 feet and a width of 4x – 10 feet. This means that the area of the backyard is

(3x - 5)(4x - 10)

= 12x² - 30x - 20x + 15

= (12x² - 50x + 15) square feet

Their rectangular swimming pool, along with its surrounding patio, has dimensions of x + 8 by x – 2 feet. This means that the area occupied by the swimming pool and its surrounding patio is

(x + 8)(x - 2)

= x² - 2x + 8x - 16

= x² + 6x - 16

Assuming the swimming pool and its surrounding patio will not be covered with new grass, then the area of the region of the yard that they want to cover with new grass is

12x² - 50x + 15 - (x² + 6x - 16)

= 12x² - 50x + 15 - x² - 6x + 16

= 12x² - x² - 50x - 6x + 15 + 16

= 11x² - 56x + 31 square feet

3 0
3 years ago
a flower garden contains 2 roses , 6 tulips , and 4 daffodil. what percentage of the flower are tulips?
Eva8 [605]
50 percent of the flowers are tulips
3 0
3 years ago
What exponential has a value of 729?
zimovet [89]

Answer: There are infinitely many.

For example, 5314410.5 or 93. You are probably looking for (3)^6 tho

3 0
2 years ago
what are the mean variacne and standard deviatioon of the values? round to the nerates tenth. 11,11,3,1,11
alexdok [17]

Answer:

Mean = 8

Variance = 22

Standard deviation = 4.6904

Step-by-step explanation:

To find out Mean the formula is : total sum of data set / number of values

(11 + 11 + 3 + 1 + 11 + 11) / 6 = 48 / 6 = 8

Mean = 8

Now for variance we will form a table

x                  11     11     3      1      11      11

(x - Mean)    3     3    -5     -7      3      3  

(x - Mean)²   9     9    25    49    9      9

Now we the formula of variance =

Variance = (9+9+25+49+9+9)/(6-1) = 110/5 = 22

Variance = 22

Now we know Standard deviation = √(variance)

Therefore standard deviation = √22 = 4.6904

Hope this helps!<3

4 0
2 years ago
Read 2 more answers
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