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2 years ago

Can someone please help me f(x) = -3x + 20; f(8)

Mathematics

2 answers:

Andreyy892 years ago

4 0

You take 8 & drop it in wherever x appears

-3x + 20
= -3(8) + 20
= -24 + 20
= -4

Anvisha [2.4K]2 years ago

3 0

Answer:

-4

Step-by-step explanation:

the function simplified is -4 i have no way to explain just trust

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13.58 8% of sale tax

Ganezh [65]

is 12.5 ok I think ,......................,,,,,,

5 0

3 years ago

Read 2 more answers

which of the following best describes 4^2/3? a. sq root of 16, b. cube root of 4, c. sq root of four, d. cube root of 16

son4ous [18]

Answer: D) cube root of 16

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

Explanation:

The rule we use is

$x^{m/n} = \sqrt[n]{x^m}$

In this case, x = 4, m = 2 and n = 3.

So,

$x^{m/n} = \sqrt[n]{x^m}\\\\\\4^{2/3} = \sqrt[3]{4^2}\\\\\\4^{2/3} = \sqrt[3]{16}\\\\\\$

Showing that the original expression turns into the cube root of 16.

4 0

2 years ago

If there were 48 alligators and 5/6 were sleeping, how many are asleep?

Sergio039 [100]

5/6

6*8=48

5*8=40

The answer is 40

4 0

3 years ago

Constance wants to purchase an school jacket. She saw the same jacket at a few stores. Store A had the jacket for 15% off the or

soldi70 [24.7K]

Store A will be the better buy.

The price will be $53.70 after sales tax at store A.

Step-by-step explanation:

Price of Jacket at store A = $59.60

Discount = 15%

Discount Amount = $\frac{15}{100}*59.60\\$

Discount Amount = $0.15*59.60=\$8.94$

Price after discount = Original price - Discount amount

Price after discount = 59.60 - 8.94 = $50.66

Price of Jacket at store B = $50.99

The price at store A becomes less than store B after discount, therefore, buying from store A is better.

Sales tax = 6%

Sales tax amount = $\frac{6}{100}*50.66$

Sales tax amount = $0.06*50.66=\$3.0396$

Price after sales tax = Discount price at store A + Sales tax amount

Price after sales tax = 50.66 + 3.0396 = $53.6996

Rounding off to nearest hundredth;

Price after sales tax = $53.70

The price will be $53.70 after sales tax at store A.

Keywords: percentage, addition

Learn more about percentages at:

#LearnwithBrainly

8 0

2 years ago

SHOW YOUR WORK!!<br><br> What is the distance between point A (-3, -2) and Point B (4, -7)?

gulaghasi [49]

Answer: $\bold{\sqrt{74}}$

<u>Step-by-step explanation:</u>

$\text{Use the distance formula: }d_AB=\sqrt{(x_A-x_B)^2+(y_A-y_B)^2}\\where\ (X_A, y_A)=(-3, -2)\\and\ (x_B,y_B)=(4, -7)\\\\\\d_AB=\sqrt{(-3-4)^2+[-2-(-7)]^2}\\\\.\quad =\sqrt{(-7)^2+(5)^2}\\\\.\quad =\sqrt{49+25}\\\\.\quad =\boxed{\sqrt{74}}$

3 0

3 years ago