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tigry1 [53]
2 years ago
6

What is the answer of this question

Mathematics
1 answer:
shepuryov [24]2 years ago
6 0

Answer:

If you need to simplify this equation, you will get 2x-2, if you are solving for the value of x, your answer will be x=6

Step-by-step explanation:

always work through your equations following the order of operations.

The first thing you will do is the multiplication of 3 and (x+4):

3 x (x+4)= 3x+12

once you have multiplied the 3 into the brackets, your equation will be:

5x-(3x+12)

Your next step will be to remove the brackets by carrying the subtraction sign over to each of the terms in the brackets, you will then have the equation:

5x-3x-12

Group your like terms (so simplify the 5x-3x) to get:

2x-12

This is the last step if the question is only asking you to simplify the expression, if you are solving for the variable then you will move one of the terms to the opposite side of the equals sign and will get:

2x=12 (since to swap the side you add 12 to both sides which cancels out the -12)

Simplify the expression by dividing both sides by 2 and you will be left with:

x=6

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Find the surface area of the pyramid shown to the nearest whole number. The base is a regular hexagon.
Fiesta28 [93]
The surface area of the pyramid will be given as follows:
Area of triangles:
A=1/2×base×height
A=1/2×12×18
A=108 m²
Area of 6 triangles is given by:
A=108×6=648 m²

Area of the hexagon:
A=6×1/2×12×6√3
A=374.123m²

Total surface area:
SA=648+374.123
SA=1022.123 m²~1022 m²

Answer: C] 1022 m²

8 0
3 years ago
At 7 p.m,the temperature was 10 °
Mandarinka [93]
It went from 10 to -2, so you need to find the difference. The way you'd do this is: 10 - (-2). Do you know how to subtract a negative number from a positive number?

3 0
3 years ago
SOMEONE PLS HELP :( I WILL CHOOSE BRAINLIEST!!!
Nikolay [14]

Answer:

x -3y = - 3

Step-by-step explanation:

Slope of line m = (0 -1 )/(-3 - 0) = 1/3

y - intercept b = 1

Equation of line in slope-intercept form is given as:

y = mx + b

Plugging m = 1/3 and b = 1 in the above equation, we find:

y = 1/3 x + 1

-> 3y = x + 3

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This is the required equation of line.

7 0
2 years ago
Montega and Luisa are rewritting the scale 1 inch=2 feet in a:b form. who is right?​
vitfil [10]

The correct representation of the scale is 1 inch:2 feet

<h3>What are scale ratios?</h3>

Scale ratios are used to show the relationship between quantities of different measurements

The scale is given as:

1 inch = 2 feet

Represent the above scale, as ratio

Ratio = 1\ inch:2\ feet

Hence, the correct representation of the scale is 1 inch:2 feet

Read more about scales at:

brainly.com/question/24579126

6 0
2 years ago
Compound interest of $1000 is invested at 10% compounded continuously, the future value s at any time t in years is given by s=1
crimeas [40]

Answer: 6.93 years

Step-by-step explanation:

Given

Rate of interest is r=10\%

Future value is given by s=1000e^{0.1t}

For the investment to double itself, i.e. s=2000

\Rightarrow 2000=1000e^{0.1t}\\\Rightarrow 2=e^{0.1t}\\\\\text{Taking log both sides}\\\\\Rightarrow \ln 2=0.1t\\\\\Rightarrow t=\dfrac{\ln 2}{0.1}\\\\\Rightarrow t=6.93\ \text{years}

It takes around 6.93 years to double the investment.

8 0
3 years ago
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