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Ugo [173]
3 years ago
12

HOW DO I DO THISSS:(((

Mathematics
2 answers:
laiz [17]3 years ago
4 0
4. added,

2. $957.44
Nadya [2.5K]3 years ago
4 0

Answer:

1. A

2. C

3. A

4. B

Step-by-step explanation:

To solve 1-3 you just take the percent and divide it by 100. Ex: 57%/100 = 0.57. Then you take that number and multiply it by the cost of it. Ex: 0.57 * 899 = 512.43. 512.43 is 57% of 899. I hope this helps :)

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The length of a rectangle is 19 centimeters less than six times its width. Its area is 20 square centimeters. Find the width and
anzhelika [568]

Answer:

If the width is 5 cm and the length is 4 cm it satisfies both parts.

6 x 4 = 24

24 - 5 = 19

5 x 4 = area of 20

Step-by-step explanation:

8 0
3 years ago
The solution to -6+1/4w=-4
Svetllana [295]

So firstly, add both sides by 6: \frac{1}{4}w=2

Next, multiply both sides by 4, and your answer will be w=8

6 0
3 years ago
Read 2 more answers
Which expression calculates the speed in meters per second of an object that travels a distance of 40m every 10s
ddd [48]

Answer:

s = 40/10

Step-by-step explanation:

s = speed, d = distance, t = time

d = 40m, t = 10s

s = 40m/10s

5 0
2 years ago
Read 2 more answers
Without dividing,estimates the quotient for 3,328 divide by 6
Katarina [22]

Answer:

For this equation let's round the 3328 to a 3300.

Step-by-step explanation:

If we remove the 2 zeros, we remain with a 33. 33/6 is 5.5 Now if we add back 2 places we get 550. I know this is written badly, but I hope it helped.

7 0
3 years ago
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Finding a polynomial of a given degree with given zeros
galben [10]

Since f(x) is a polynomial with 3rd degree, then it will have 3 roots (zeroes)

One of them is real and the other two are complex conjugate roots

Since the real root is 4, then

x = 4

Since the complex root is (1 - i), then

The other root will be the conjugate of it (1 + i)

x = (1 - i)

x = (1 + i)

To find f(x) we will multiply the three factors of it

We can get the factors from the zeroes

x=4

Subtract 4 from both sides

\begin{gathered} x-4=4-4 \\ x-4=0 \end{gathered}

The first factor is (x - 4)

\begin{gathered} x=1-i \\ x-(1-i)=(1-i)-(1-i) \\ x-1+i=0 \end{gathered}

The second factor is (x - 1 + i)

The third factor is (x - 1 - i)

f(x)=(x-4)(x-1+i)(x-1-i)

We will multiply them to find f(x)

\begin{gathered} (x-1+i)(x-1-i)= \\ x^2-x-ix-x+1+i+ix-i-(i^2)= \\ x^2-2x+1-(-1)= \\ x^2-2x+1+1= \\ x^2-2x+2 \end{gathered}

Multiply it by (x - 4)

\begin{gathered} f(x)=(x-4)(x^2-2x+2) \\ f(x)=x^3-2x^2+2x-4x^2+8x-8 \\ f(x)=x^3-6x^2+10x-8 \end{gathered}

The answer is

f(x)=x^3-6x^2+10x-8

5 0
1 year ago
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