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Soloha48 [4]
3 years ago
13

What is the value of x? x = ___

Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0
<h2>Greetings!</h2>

Answer:

x = 8°

Step-by-step explanation:

Because this triangle is an equilateral triangle, as indicated by the lines which say all lines are congruent, it means every angle, R S and T, are exactly the same amount. 60°

This means that angle S = 60 so:

7x +4 = 60

Simply move the 4 over to the other side, making it a negative:

7x = 60 - 4

7x = 56

So now simply divide both sides by 7:

\frac{7x}{7} = \frac{56}{7}

x = 8

<h3>So the value of x is 8°!</h3>
<h2>Hope this helps!</h2>
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R is equal to the sum of twenty-one and y *
stiks02 [169]

Answer:

r=21+y

Step-by-step explanation:

its telling you that r is going to be equal to the rest of the equation, so we start with

r=

then, it mentions the sum of 21 and y, so this would be represented as

21+y

since r is equal to the sum of 21 and y, your answer is

r=21+y

(because of comutitive property, r=y+21 is also an acceptable answer.)

8 0
3 years ago
Ecuaciones lineales , El valor de x , x+7 = 2 necesito saber el reasultado de este ejercicio.​
Ratling [72]

Answer:

x = -5

Step-by-step explanation:

x+7=2

-7 | -7 -7 from both sides

x= -5

3 0
3 years ago
The population of the world was about 5.3 billion in 1990. Birth rates in the 1990s range from 35 to 40 million per year and dea
frosja888 [35]

Answer:

  24.1 billion

Step-by-step explanation:

One way to write the logistic function is ...

  P(t) = AB/(A +(B-A)e^(-kt))

where A is initial value (P(0)), and B is the carrying capacity (P(∞)). We are told to use relative population growth in the 1990s as the value for k.

In billions, we have ...

  A = 5.3

  B = 100

  k = 0.02/5.3 ≈ 0.003774 . . . . . relative growth rate at 20 M per year

  t = 2450 -1990 = 460

  P(t)=\dfrac{530}{5.3+94.7e^{-0.003774t}}\\\\P(460)=\dfrac{530}{5.3+94.7e^{-1.73604}}\approx \boxed{24.1\quad\text{billion}}

8 0
3 years ago
4x+y=10 what is the missing value
Mandarinka [93]

Answer:

o

Step-by-step explanation:

if x = 0 ,y =10

4×0+10

=10

if x = 1, y = 6

=4×1 + 6

=4 +6

=10

if x = 2, y = 2

=4×2 +2

=8 + 2

=10

u can substitute any value for x and y ...i have only used positive values here

3 0
3 years ago
How does the volume of a sphere compare to that of the volume of a cylinder? What would you say the scale factor for Vol sphere:
borishaifa [10]

Answer:

The volume of a sphere is 2/3 times the volume of a similar cylinder

Scale factor : 2/3

Step-by-step explanation:

Let us consider a sphere of radius r. The volume of the sphere will be given as

V_{s}=\frac{4}{3} \pi r^{3}

Similarly, let us consider a cylinder with its height being twice the radius of the sphere. We will have its volume given as:

V_{c}=\pi r^{2}h

but h = 2r

Hence we have

V_{c}= 2\pi r^{3}h

We can divide the two volumes to get a constant that links them together

\frac{V_{s}}{V_{c}}=\frac{\frac{4}{3} \pi r^{3}}{2\pi r^{3}h}

this will give us 2/3

Hence the scale factor for Vol sphere: Vol cylinder is 2/3

3 0
3 years ago
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