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DochEvi [55]
3 years ago
10

Write this number in word form. 284,028

Mathematics
1 answer:
natali 33 [55]3 years ago
7 0
Two hundred eighty-four thousand, twenty-eight.
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Brian needs to find the value of a number, a, so that when (x^2+3x) is added to the binomial (3x^2+ax), the sum simplifies to 4x
Julli [10]

Answer:

a = 9

Step-by-step explanation:

First we need to add  (x^2+3x)  to (3x^2+ax),

(x^2+3x)+(3x^2+ax)

Expand

= x^2+3x+3x^2+ax

Collect the like terms

= x^2+3x^2+3x+ax

= 4x^2 + 3x + ax

= 4x^2+(3+a)x

Equate the solution to 4x^2+12x

4x^2+(3+a)x = 4x^2+12x

Comparing the like terms on both sides

(3+a)x =12x

3 + a = 12

a = 12 - 3

a = 9

Hence the value of a is 9

6 0
3 years ago
What is the y intercept of the line 2x + 3y - 9 = 0
Sindrei [870]
\hbox{y-intercept: } x=0 \\
2 \times 0+3 y -9=0 \\
3y-9=0 \\
3y=9 \\
y=\frac{9}{3} \\
\boxed{y=3}
4 0
3 years ago
A sheet of bad paper is cut into 12 equal parts. What percent of the whole is 3 parts?
11Alexandr11 [23.1K]
25%

Divide 12 by 3 and you'll get 4.
That means 1/4 or a quarter of the 12 is 3.
(Convert the fraction to its percentage form)
1/4 or 1 divided by 4 equals 0.25
Multiply 0.25 by 100 and you'll get 25%
3 0
3 years ago
Read 2 more answers
PERSEVERE Find the values of x and y,
Vlad [161]

y² = 8y - 15 (alternate angles are equal)

y² - 8y + 15 = 0

(y - 5)(y - 3) = 0

y = 5 or 3

x + 8y - 15 = 180 (angles in a straight line add up to 180)

when y = 5

x + 40 - 15 = 180

x = 155°

when y = 3

x + 24 - 15 = 180

x = 171°

8 0
3 years ago
The points (0,0), (3,8) and (9,24) are on the graph of a proportional relationship. Determine a fourth point that belongs on the
Alex73 [517]

Answer:

(6, 16)

Step-by-step explanation:

This is a linear graph with equation y=8/3x

Just plug in any value of x to get another value of y

Look at the two graphs below

The equation y=8/3 contains the given points (0,0), (3,8), and (9,24) All you need to do is select another point on that line

7 0
3 years ago
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