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3 years ago

What is the value of (4 minus 2) cubed minus 3 times 4? Negative 20 Negative 4 4 20

Mathematics

2 answers:

Mamont248 [21]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

(4-2)^3 - 3*4

PEMDAS

P arentheses

(2)^3 - 3*4

E xponents

8 -3*4

MD multiply and divide from left to right

8 - 12

AS add and subtract from left to right

-4

trasher [3.6K]3 years ago

5 0

Answer:

-4

Step-by-step explanation:

When solving an expression, use PEMDAS!

4-2 = 2

2^3 (Cubed means to the 3rd) = 8

3 x 4

8-12 = -4

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Can I please get help in number 13.

igomit [66]

-230 because it is farther away from 0

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3 years ago

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A chef plans to mix 100% vinegar with Italian dressing. The Italian dressing contains 12%

Hitman42 [59]

Answer:

Amount of vinegar. 100% : 20 milliliters

Amount of Italian dressing: 140 milliliters

Step-by-step explanation:

Let's call A the amount of vinegar. 100%

Let's call B the amount of Italian dressing . 12% vinegar

The resulting mixture should have 23% vinegar, and 160 milliliters.

Then we know that the total amount of mixture will be:

$A + B = 160$

Then the total amount of pure antifreeze in the mixture will be:

$A + 0.12B = 0.23 * 160$

$A + 0.12B = 36.8$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -1 and add it to the second equation:

$-A -B = -160$

$A + 0.12B = 36.8$

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

$-0.88B = -123.2$

$B = \frac{-123.2}{-0.88}$

$B = 140\ milliliters$

We substitute the value of B into one of the two equations and solve for A.

$A + 140 = 160$

$A = 20\ milliliters$

7 0

3 years ago

Which equation best represents a trend line for the scatter plot? These are fractions BTW.

kenny6666 [7]

(1, 8) and (7,1)
slope = (8-1)/(1-7) = -7/6
y = mx + b
b = y - mx
b = 8 - (-7/6)(1)
b = 8 + 7/6
b = 55/6

equation
y = -7/6(x) + 55/6

answer
<span>y=−7/6 x+55/6 </span>

6 0

2 years ago

Read 2 more answers

Find the missing factor. Write your answer in<br> exponential form.<br> 6^-8 = blank 6^7

Keith_Richards [23]

Answer:

6^ (-15) = x

Step-by-step explanation:

6^-8 = blank 6^7

6^-8 = x* 6^7

Divide each side by 6^7

6^-8 / 6^7 = x 6^7 / 6^7

6^-8 / 6^7 = x

Since the bases are the same, we can subtract the exponents

6^ ( -8-7) = x

6^ (-15) = x

6 0

2 years ago

A city has a population of 280,000 people. suppose that each year the population grows by 4.5% . what will the population be aft

Anastasy [175]

Given that population of the city is 280000.

Rate of growth of the population = r = 4.5% = 0.045

We have to find population after 15 years so time

t = 15

We can use growth formula to find the required population which is given by :

$A=P(1+r)^t$

Where P= starting population = 280000

r= rate of growth = 0.45

t= time = 15

now plug these values into above formula.

$A=280000(1+0.45)^{15}$

$A=280000(1.45)^{15}$

$A=280000(263.34194176)$

$A=73735743.6928$

Hence population after 15 years will be approx 73735743.

8 0

2 years ago