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vovangra [49]
3 years ago
8

The balance of Susu's savings account can be represented by the variable b. The inequality describing her balance is b greater-t

han 30 dollars. Which could be a solution to the inequality? $15 $20 $30 $35
Mathematics
2 answers:
Sphinxa [80]3 years ago
8 0

Answer:

$35

Step-by-step explanation:

b is greater than 30

35 is the only value greater than 30

kompoz [17]3 years ago
3 0
$35 it is there only value larger than 30
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The graph of a quadratic function having the form f(x) = ax? + bx + c passes
insens350 [35]

Answer:

  f(-3) = -20

Step-by-step explanation:

We observe that the given x-values are 3 units apart, and that the x-value we're concerned with is also 3 units from the first of those given. So, a simple way to work this is to consider the sequence for x = 6, 3, 0, -3. The corresponding sequence of f(x) values is ...

  34, 10, -8, ?

The first differences of these numbers are ...

  10 -34 = -24

  -8 -10 = -18

And the second difference is ...

  -18 -(-24) = 6

For a quadratic function, second differences are constant. This means the next first-difference will be ...

  ? -(-8) = -18 +6

  ? = -12 -8 = -20

The value of the function at x=-3 is -20.

_____

The attachment shows using a graphing calculator to do a quadratic regression on the given points. The graph can then be used to find the point of interest. There are algebraic ways to do this, too, but they are somewhat more complicated than the 5 addition/subtraction operations we needed to find the solution. (Had the required x-value been different, we might have chosen a different approach.)

5 0
3 years ago
6. The area of a rectangular sheet of paper is 300 cm squared. The length is 5 cm more than the width
konstantin123 [22]

Answer:

Step-by-step explanation:

width = x

length= x + 5

a)  x + 5

b) x * (x+5) = 300

x^2 + 5x = 300

x^2 + 5x - 300 = 0

Δ = 25 + 1200 = 1225

width = (-5 + 35)/2 = 15 cm

lenght = 15 + 5 = 20 cm

8 0
3 years ago
Read 2 more answers
What is the y- intercept of the line shown?
timofeeve [1]
Y-intercept when x = 0
so 
y = 4
8 0
3 years ago
WHATS THE FRACTION FOR 6 DOLLARS AND 14 CENTS
Jet001 [13]

Answer:

6\frac{14}{100}

Step-by-step explanation:

First, you make fourteen a fraction.

\frac{14}{100}

Then, make it a mixed fraction by adding a six.

6\frac{14}{100}

Lastly, have a great day! :)

3 0
3 years ago
Pamela’s age is three times Jiri’s age. The sum.of their ages is 48. What is jiris age
kap26 [50]

Answer:

Jiri is 12 years old

Step-by-step explanation:

To start off we need to make an equation. Since we know both of their ages add up to 48 and that Pamela's age is 3 times Jiri's age we can say x(Jiri's Age) + 3x(Pamela's age) =48 --> x+3x=48

Now we have the equation x+3x=48, and we need to solve it.

First combine like terms

4x=48

Now divide both sides by 4

x=12

And now since we are using Jiri's age as x we know Jiri is 12 years old.

5 0
3 years ago
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