MATHEMATICS HIGH SCHOOL

• Buyers are charged a shipping fee of $4.75 for each scarf order.Which expression can you use to find the total price of a scarf order?
48s - 4.75
4.758 - 48
48s + 4.75
4.75s + 48
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Answers

Answer 1
Answer:

Answer: 48s + 4.75

Step-by-step explanation:

Each scarf is sold for $48 which is why the total price of buying s scarves is 48s or 48*s.

Assuming a single order of scarves can contain more than one scarf then that means that for s scarves, the shipping fee will remain the same at $4.75.

Should this be the case then the expression for an order of scarves will be;

= 48s + 4.75

This shows the price of ordering s number of scarves plus the shipping cost of $4.75 for the order comprising s number of scarves.

Answer 2
Answer:

Answer:

48s + 4.75

is the answer i did the quiz and got it correct

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The perimeter of a square is 48 centimeters. What is its area?

Answers

the area is 144 units.

area is length × width

squares have an equal lenght and width, and 4 sides. if a square's perimeter is 48, we need to divide that by 4 to get the size of each side.

48 ÷ 4 = 12

each side is 12 units. to get the area, we need to mutliple length × width, in this case 12 × 12, which equals 144 units.
Each side would equal 12 centimeters then, and the way to find the area is by multiplying the height and width. So, the area would be 144 centimeters!
I hope this helps!! :)
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1a) Which equation demonstrates the commutative property of addition for complex numbers? A: (5 - 10i)[(0 - 10i) +(5 +0i)] = [(5 - 10i)(0 - 10i)]+[(5 - 10i)(5 +0i)]


B: (10 - 5i) + (5 - 10i) = (5 - 10i) +(10 – 5i)

C: (5+ 10i)+(- 5 - 10i) = 0+ Oi

D: [(0 - 5i)+(5-i)] +(5 +i) = (0 - 5i)+[(5 - i) +(5+i)]

1b) Which of the following demonstrates the commutative property of multiplication?

A: (8+6i)(4+2i)=(4+2i)(8+6i)

B: (7-6i)(0+2i)=(7+2i)(0-6i)

C: (2+8i)(2-8i)=20

D: (-5+3i)(-1+i)=(5-3i)(1+i)

Answers

Answer:

The answer to 1a is B and the answer to 1b) is A.

Step-by-step explanation:

I got my answer right on the quiz. So, it's actually a lot easier than it seems. Imagine 4+2=2+4 or (8)(4)=(4)(8). That is commutative property of addition and multiplication just simper. In this case B and A are the same thing just with complex numbers.

Round 45,122 to the nearest ten thousand

Answers

Rounded to the nearest 10,000, 45,122 is 50,000. This is because the 5 has been reached and so it is rounded up.

To round to the nearest  ten thousand, we look at the last four digits. If these digits are 5000 or greater, then we round the thousands digit up, and if they are less than 5000, then we round down, keeping the ten  thousand's digit the same.

The question is asking to Round 45,122 to the nearest ten thousand .

The last 4 digits are 5122.

This is greater  than 5000.So  we round up .

45,122 to the nearest ten thousand is 50,000.

Factor the following equation to solve for "x"; x^{2} - 8x - 20 = 0

Answers

x² - 8x - 20 = 0

Factor the left side:

(x + 2) (x - 10) = 0

That's a true statement if (x = -2) or if (x= 10), so those are your solutions.

x = -2
x = 10

By the way ... you don't factor an equation. You can only factor an expression.

work the area of a rectangle out but already knowing the area and needing to know the length as it is two centermeters more than the width, area being 469

Answers

the area of a rectangle is the length times width:
a = l*w
the length is 2 centimeters more than the width:
l = w + 2
express area in terms of width
a = l*w
a = (w + 2)w
a = w^2 + 2w
w^2 + 2w = 469
w^2 + 2w - 469 = 0
we can solve using the general quadratic formula:
w = (-2 +- √(4 + 1876))/2
w = (-2 +- 43.36)/2
we use the positive solution:
w = (-2 + 43.36)/2
w = 20.68
thus the width is 20.68 cm
l = w + 2 = 20.68 + 2
l = 22.68
and the length is 22.68 cm

One positive number exceeds 4 times another positive number by 3. The product of the two numbers is 351. What are the two numbers? A) 6 and 9
B) 6 and 24
C) 9 and 39
D) 25 and 29

Answers

Hello,
Answer C 9 and 39.

Let a the first and b the second
a=4b+3
a*b=351

==>b*(4b+3)=351
==>4b²+3b-351=0
Δ=9+4*4*351=5625=75²
==>b=(-3-75)/8 =-9.75 ==>a=4*(-9.75)+3=-36 (excluded) a>0
or b=(-3+75)/8=9 and a=4*9+3=39
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