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mr_godi [17]
1 year ago
12

Evaluate 6x ^ 2 - 4x - 7 when x = 2

Mathematics
1 answer:
Afina-wow [57]1 year ago
5 0

The numerical value of the expression (6x² - 4x - 7) when x =2 is 9

<h3>What is the numerical value of the expression when x=2?</h3>

Given the expression in the question;

6x² - 4x - 7

x = 2

To determine the numerical value of the expression when x =2, replace all the occurrence of x with 2 in the expression and simplify.

6x² - 4x - 7

6(2)² - 4(2) - 7

24 - 8 - 7

24 - 15

9

Therefore, the numerical value of the expression (6x² - 4x - 7) when x =2 is 9

Learn more Algebra Problems here: brainly.com/question/723406

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A well of diameter 4m is dug 14m deep. The earth taken out is spread evenly all around the well to form a 40cm high embankment.
dimulka [17.4K]

Answer:

82.72m

Step-by-step explanation:

Volume = πr2h

= 3.142*7*7*14

= 2,155.41m³

Now that we hav the volume of earth, we go on to find the raduis of the spread

2155.41m³ = 3.142*r²*0.4

2155.41m³ = 1.26r²

r² = 1,710.64

r = 41.36m

Width = diameter = 2r = 82.72m

8 0
3 years ago
in recent years 17.7% of households watched the finals of a popular reality series. There are 110.2 million households in the Un
prisoha [69]
17.7%            x
-------- = -----------------
100%     110,200,000

If 110.2 million households equals 100%, then you just cross multiply to solve for what households are 17.7% - which is 19,505,400.
6 0
3 years ago
The cost of a babysitting service on a cruise is $10for the first hour and $12 for each addition hour. If the total cost of baby
lana66690 [7]

Answer:5hours

Step-by-step explanation:

58-10 = 48 dollars remain after the first hour

48/12 = 4 hours after the first hour

1+4=5 total hours

3 0
3 years ago
Read 2 more answers
What is the slope of the line passing through the points (-3, 4) and (2, - 1)?
dimaraw [331]

Answer:

slope = -1 or -x

Step-by-step explanation:

Do y2-y1/x2-x1

Plug in

-1 - 4/ 2 - -3 = -5/5

(Simplify)

-1 so the slope is

-1 or -x

If you want to find the equation use one of the points you have.

4 = -1(-3) + b

4 = 3 + b (subtract 3 on each side)

1 = b

y = -1x + 1 is the equation

6 0
3 years ago
Read 2 more answers
Find a number such that 10 less than two thirds the number is one fourth the number
Ivan

Answer:

the number is 24

Step-by-step explanation:

10 less than two thirds the number is one fourth the number

Let the unknown number be x

two third of the number is \frac{2}{3} x

10 less than two third the number becomes

\frac{2}{3}x-10

one fourth the number becomes \frac{1}{4}x

10 less than two thirds the number is one fourth the number

\frac{2}{3}x-10=\frac{1}{4}x

We need to solve for x

LCD is 3*4 = 12

Multiply the whole equation by 12

\frac{2*12}{3}x-10*12=\frac{1*12}{4}x

8x - 120 = 3x

add 120 on both sides

8x = 3x + 120

Subtract 3x on both sides

5x = 120

divide by 5 on both sides

x= 24




3 0
3 years ago
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