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nikklg [1K]
3 years ago
10

Richard is $15 overdrawn on his checking account. He writes a check for $7. What is the balance in his checking account now?​

Mathematics
1 answer:
Annette [7]3 years ago
5 0
Since he’s already at -15, if he writes a check for 7 then he’s subtracting more from his account.
So, -15-7=-22
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Explanation + answers

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7. An example for using estimation would be:
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Guessing the number of pennies in a jar
4 0
2 years ago
Read 2 more answers
PLEASE ANSWER ASAP
Nastasia [14]

Answer:

y = 4 (2)^{x}

Step-by-step explanation:

For an exponential function in standard form

y = a (b)^{x}

To find the values of a and b, use ordered pairs from the table

Using (0, 4 ), then

4 = ab^{0} ( b^{0} = 1 ), so

a = 4

y = 4b^{x}

Using (1, 8 ), then

8 = 4b^{1} = 4b ( divide both sides by 4 )

2 = b

Thus

y = 4 (2)^{x} ← exponential function

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To compute the area of a rectangle, you need to use the formula A=l.w if the length is 2 3/4 inches and the width is 4 1/2 inche
blagie [28]

Answer:

12 3/8

Step-by-step explanation:

A = 2 3/4 x 4 1/2

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Find the roots of the polynomial equation.
True [87]

Answer:

3 ± i5

Step-by-step explanation:

Here we're given four sets of possible roots of the given polynomial.   Each set consists of two complex quantities and 1 real quantity.

First, we determine whether +4 is a root, then whether -4 is a root.  Let's use synthetic division to do that:

     -----------------------

4   /  1   -2    10   136

             4      8    72

    ---------------------------

        1     2    18    208     Since the remainder is not zero, 4 is not a root.

Eliminate the first two possible answer choices, and assume that -4 is a root.

Let's check this out to be certain:

     -----------------------

-4  /  1   -2    10   136

             -4   24  -136

    ---------------------------

        1     -6    34    0

Since the rem. is zero, -4 is a root, and the coefficients of the 2nd-degree quotient are 1, -6 and 34.

In other words, a = 1, b = -6 and c = 34.

Let's apply the quadratic rule to find the roots:

       6 ± √(36 - 4[1][34] )       6 ± √ (-100)

x = ------------------------------ = ----------------------- = 3 ± i5

                     2                                   2

So the correct answer is the last one of the four given possible answers:

3 ± i5

3 0
3 years ago
Read 2 more answers
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