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4 years ago

Evaluate the expression 1/3 (4+18)-2 2nd degree

1 answer:

3 0

Answer: 10/3

Explanation:

I will rewrite the expression using the math editor just to make it more understandable.
<span />
$( \frac{1}{3} )(4+18)-2^2$

Now, I will show the solution step-by-step

1) Solve the parenthesis:

=> $\frac{1}{3} .22-2^2$

2) Calculate the product of the fraction 1/3 times number 22 and rais 2 to the power 2:

=> <span> $\frac{1.22}{3.1}-4 = \frac{22}{3}-4$

3) Subtract 4 from the fraction 22/3

$\frac{22}{3} -4= \frac{22-4.3}{3} = \frac{22-12}{3} = \frac{10}{3}$ </span>

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A chef makes a fruit salad using pears and mangos. Pears and mangos each cost $2.25 per fruit. The chef buys x pears and y mango

GrogVix [38]

Answer:

P=2.25x-----------1

M=2.25y----------2

Step-by-step explanation:

Step one:

given data

we are told that the cost of pears= $2.25 each

and cost of mango= $2.25 each

Step two:

the chef bought x pears and y mangoes

let the total cost of pears be P

and for mango be M

P=2.25x-----------1

M=2.25y----------2

3 0

3 years ago

A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is la

Minchanka [31]

The exponential function which represented by the values in the table is $f(x)=4(\frac{1}{2})^{x}$ ⇒ 3rd answer

Step-by-step explanation:

The form of the exponential function is $f(x)=a(b)^{x}$ , where

a is the initial value (when x = 0)
b is the growth/decay factor
If k > 1, then it is a growth factor
If 0 < k < 1, then it is a decay factor

The table:

→ x : f(x)

→ -2 : 16

→ -1 : 8

→ 0 : 4

→ 1 : 2

→ 2 : 1

∵ $f(x)=a(b)^{x}$

- To find the exponential function substitute the value of x and f(x)

by some values from the table to find a and b, at first use the

point (0 , 4) to find the value of a

∵ x = 0 and f(x) = 4

∴ $4=a(b)^{0}$

- Remember that any number to the power of zero equal 1

except the zero

∵ $b^{0}=1$

∴ 4 = a(1)

∴ a = 4

Substitute the value of a in the equation

∴ $f(x)=4(b)^{x}$

- Chose any other point fro the table to find b, lets take (1 , 2)

∵ x = 1 and f(x) = 2

∴ $2=4(b)^{1}$

∴ 2 = 4 b

- Divide both sides by 4

∴ $b=\frac{2}{4}=\frac{1}{2}$

- Substitute the value of b in the equation

∴ $f(x)=4(\frac{1}{2})^{x}$

The exponential function which represented by the values in the table is $f(x)=4(\frac{1}{2})^{x}$

Learn more:

You can learn more about the logarithmic functions in brainly.com/question/11921476

#LearnwithBrainly

8 0

3 years ago

Read 2 more answers

How much will it cost if 12 people come to the party?

saveliy_v [14]

Answer:

y=5x+25

y=5(12)+25

y=85

Step-by-step explanation:

6 0

3 years ago

WILL GIVE THE BRAINIEST AND 20 POINTS!!!!!!! Find the distance between each pair of points.

salantis [7]

A (5, 4) and B( 5, -2) is 6 units

E(-2, -1) and F(-2, -5) is 4 units

G(3, -5) and H(6, -5) is 3 units

C(-4, 1) and D(1, 1) is 5 units

8 0

3 years ago

A sphere and a cylinder have the same radius and height. The volume of the cylinder is 21 meters cubed.

LenaWriter [7]

Answer:

28 meters cubed.

Step-by-step explanation:

Since we know that the volume of a sphere is 4/3 the volume of a cylinder, we can multiply 21*4/3. 21*4 will equal 84 and 84/3 would be 28. So the volume of the sphere would be 28 meters cubed.

5 0

3 years ago

Read 2 more answers