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solong [7]
4 years ago
7

Plz help me with this math ​

Mathematics
1 answer:
erma4kov [3.2K]4 years ago
5 0

Answer:

$68.13

Step-by-step explanation:

$7.29x3=$21.87

$5x2=$10.00

$21.87 + $10.00=$31.87

$100.00-$31.87=$68.13

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If g(x)=4x2-16 were shifter 5 units to the right and 2 down, what would the new equation be?
Tatiana [17]
G(x)=4x^2-16

To shift to the right we have to subtract from the value of x, in this case by 5 units...

h(x)=4(x-5)^2-16

h(x)=4(x^2-10x+25)-16

h(x)=4x^2-40x+100-16

h(x)=4x^2-40x+84

Now to shift the function downwards by 2 units we must subtract the constant 2 from h(x)

h(x)=4x^2-40x+84-2

h(x)=4x^2-40x+82
6 0
3 years ago
2 At Bea's Pet Shop, the number of dogs, d, is initially five less than twice the number of cats, c. If she decides to add three
KatRina [158]

Let D be dogs and C be cats

<em>dogs, d, is initially five less than twice the number of cats, c</em>

D + 5 = 2C

<em>If she decides to add three more of each, the ratio  of cats to dogs will be</em>

D + 8 = 2C + 3

<em>Could Bea's Pet Shop initially have 15 cats and 20 dogs?</em>

Simply plug in the numbers

20 + 5 = 2(15)

This is clearly not true: 25 does not equal 30

<em />

<em />

6 0
3 years ago
One root of a third degree polynomial function f(x) is -5 + 2i. Which statement describes the number and nature of all
Sauron [17]

Answer:

f(x) has two imaginary roots and one real root.

Step-by-step explanation:

Complex roots:

I a complex number a + bi is a root of a polynomial, it's conjugate a - bi is also a root.

One root of a third degree polynomial function f(x) is -5 + 2i.

This means that -5 - 2i is another root of the polynomial, and thus, 2 of the roots are complex.

Third degree, so it has three roots, which means that the third root is real(not possible to have a complex root without it's conjugate), and thus, the correct answer is:

f(x) has two imaginary roots and one real root.

7 0
3 years ago
In a poll, 44% of the voters say they plan to reelect the mayor. The poll has a margin of error of ±3 percentage points. Use a m
Amanda [17]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Percentage of voters who plan to re-elect mayor = 44%

Margin of Error in measurement = ±3 % points

The absolute value inequality to find the lowest and greatest percent of points :

X = mid value

44% = estimated percentage

≤3 = error margin

Hence,

|mid value - estimate| ≤ error margin

|x−44|≤3

Hence,

-3 ≤ x - 44 ≤ +3

-3 + 44 ≤ x ≤ 3 + 44

41 ≤ x ≤ 47

Hence,

Least percentage point = 41

Greatesr percentage point = 47

3 0
3 years ago
1/5 of 400 showing work
pychu [463]
1/5 of 400 = 80
400 x 1/5 = 400/5
400/5 = 80
6 0
3 years ago
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