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3 years ago

How do simplify 2(4× + 5y)

Mathematics

1 answer:

olganol [36]3 years ago

4 0

Please answer for clarification is that 2(4× + 5y) as in 4 to the power of x?

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Abel rented a jet ski. He paid $27 for each hour and $15 to rent a life jacket for the day. He returned the items after 4 hours.

marissa [1.9K]

Answer:

123

Step-by-step explanation:

27 x 4 + 15

6 0

3 years ago

15 point to the one that answers

riadik2000 [5.3K]

If you use PEMDAS, you’ll start with multiplication. so 54*96=5,184. 6*2=12.
so now the problem would be 96+5,184+32/98-12.
from here you would divide.
so, 32/98=0.33 (rounded up)
now you add.
96+5,184+0.33=5,280.33
so, 5,280.33-12=5,268.33.
the answer is:
5,268.33
hope this helped!!

6 0

3 years ago

Julie is 12 ounce of cheese in her potato soup recipe yields 8 servings and Julie needs enough for 20 servings how many pounds o

inysia [295]

12oz= $\frac{8}{20}$ or $\frac{2}{5}$ of what she needs.
we can now multiply
12oz * $\frac{5}{2}$ = 30 oz
but we need to know pounds and a pound is 16 oz so 2 pounds should be enough

8 0

3 years ago

Consumer Math

liraira [26]

Answer:

Correct answer is B.

Step-by-step explanation:

Amount deducted for social security = 6.2 % annually

Amount deducted for medicare tax = 1.45 % annually

Total deduction = 6.2 +1 .45 = 7.65 %

Tax on given amount = 7.65 * 37890 = 2898.59

Therefore amount deducted annually will be $2898.59/-

5 0

3 years ago

PLS HELP ILL GIVE BRAINLIEST

inysia [295]

<h3>Answer: 14x - 8</h3>

=======================================================

Explanation:

I'll use the quadratic formula to find the roots or x intercepts. This slight detour allows us to factor without having to use guess-and-check methods.

The equation is of the form ax^2+bx+c = 0

a = 12
b = -11
c = -5

This leads to...

$x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-11)\pm\sqrt{(-11)^2-4(12)(-5)}}{2(12)}\\\\x = \frac{11\pm\sqrt{361}}{24}\\\\x = \frac{11\pm19}{24}\\\\x = \frac{11+19}{24} \ \text{ or } \ x = \frac{11-19}{24}\\\\x = \frac{30}{24} \ \text{ or } \ x = \frac{-8}{24}\\\\x = \frac{5}{4} \ \text{ or } \ x = -\frac{1}{3}$

Now use those roots to form these steps

$x = \frac{5}{4} \ \text{ or } \ x = -\frac{1}{3}\\\\4x = 5 \ \text{ or } \ 3x = -1\\\\4x - 5 =0 \ \text{ or } \ 3x+1 = 0\\\\(4x-5)(3x+1) = 0$

Refer to the zero product property for more info.

Therefore, the original expression factors fully to (4x-5)(3x+1)

Use the FOIL rule to expand it out and you should get 12x^2-11x-5 again.

----------------------------------------------

We did that factoring so we could find the side lengths of the rectangle.

I'm using the fact that area = length*width

L = length = 4x-5
W = width = 3x+1

The order of length and width doesn't matter.

From here, we can then compute the perimeter of the rectangle

P = 2(L+W)

P = 2(4x-5+3x+1)

P = 2(7x-4)

P = 14x - 8

6 0

3 years ago