B) a soma das medidas dos ângulos internos de um polígono de 13 lados.
C) a medida do ângulo interno de um octógono regular.
D) a medida dos ângulos externos de um decágono regular.
E) a soma das medidas dos ângulos externos de um polígono regular de 12 lados.
Como posso calcular estas questões?
Answer:
The pounds of mulch the store sells are 108 and the pounds of gravel the store sells are 72.
Step-by-step explanation:
Let
x -----> pounds of mulch the store sells
y ----> pounds of gravel the store sells
we know that
-----> equation A
Remember that
so
-----> equation B
solve the system by substitution
substitute equation B in equation A
solve for y
Find the value of x
The solution is the ordered pair (108,72)
therefore
The pounds of mulch the store sells are 108 and the pounds of gravel the store sells are 72.
Answer:
Length of lady bug in meters is:
0.02
Step-by-step explanation:
A ladybugs length measures 2 cm.
We have to express this measurement in meters.
We know that 1 m=100 cm
1 cm= 1/100 m
=0.01 m
2 cm=2×0.01 m
=0.02 m
Hence, Length of lady bug in meters is:
0.02
The measurement in meters is .
Further explanation:
The centimetre and metre are the units of measurement to calculate the length of an object.
“Centi” is first introduced in metric system that means one hundredth of a unit.
Therefore, meter is or we can say a centimetre is one-hundredth of a meter.
It can be mathematically expressed as follows:
Procedure used:
Conversion from centimetre to metre.
1) First divide the unit (cm) by .
2) Now represent the resultant fraction into decimal form by moving the decimal two times to the left.
Given:
The length of ladybug is .
Calculation:
Step 1:
The length of ladybug is .
Use the above procedure to convert into meters.
First divide the number by .
Step 2:
Now follow the second step of the procedure.
The first digit on the right of decimal known as tenths or can say .
The second digit on the right of decimal known as hundredth or can say .
The resultant fraction can be convert into decimal form as follows:
Here, we shifted the decimal two times to the left in the digit .
Therefore, the unit of in meters is .
Thus, the measurement in meters is .
Learn more:
1. Learn more about the representation of the graph brainly.com/question/2491745
2. Learn more about the graph of the quadratic function brainly.com/question/2334270
3. Learn more about graphed below of the function brainly.com/question/9590016
Answer details:
Grade: Junior school
Subject: Mathematics
Chapter: Units and measurement
Keywords: Measurement, unit, decimal, fractions, ones tens, tenth, hundredth, position, numbers, centimetres, meters, numbering system, denominator, conversion, rational number, whole numbers, left side, ladybug, length.
Answer:
x f(x) g(x)
1 15 3
2 16 4
3 15 5
4 12 6
5 7 7
6 0 8
f(x) = g(x) when x = 5
Step-by-step explanation:
f(x) = -x² + 4x + 12
f(1) = -(1)² + 4(1) + 12 = 15
f(2) = -(2)² + 4(2) + 12 = 16
f(3) = -(3)² + 4(3) + 12 = 15
f(4) = -(4)² + 4(4) + 12 = 12
f(5) = -(5)² + 4(5) + 12 = 7
f(6) = -(6)² + 4(6) + 12 = 0
g(x) = x + 2
g(1) = 1 + 2 = 3
g(2) = 2 + 2 = 4
g(3) = 3 + 2 = 5
g(4) = 4 + 2 = 6
g(5) = 5 + 2 = 7
g(6) = 6 + 2 = 8
The solution to the equation f(x) = g(x), where f(x) = −x² + 4x + 12 and g(x) = x + 2, is x = 5. To find this, set the equations equal to each other, simplify, and then factor to solve for x.
To find the solution to the equation f(x) = g(x), we need to set the formulas given for each function equal to each other and then solve for x. We are given f(x) = −x² + 4x + 12 and g(x) = x + 2, so we write out the equation as follows:
−x² + 4x + 12 = x + 2
Now we need to solve this equation for x. First, let's simplify by gathering all terms to one side of the equation:
−x² + 4x - x + 12 - 2 = 0
This simplifies to −x² + 3x + 10 = 0
Next, we'll factor this quadratic equation to solve for x: -(x – 5)(x + 2) = 0.
Setting each factor equal to zero gives the solution: x = 5, x = -2. Looking back at the original options, only x = 5 is a viable option.
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