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2 years ago

Please help me with this 3x=9

Mathematics

2 answers:

fenix001 [56]2 years ago

6 0

Answer:x = 3

Step-by-step explanation:

X =9/3

X=3

Julli [10]2 years ago

5 0

First you get the variable to one side of the equals sign (in this case it already is) then you divide the number next to the variable and divide it by the number on the other side of the equals side. So the answer is 3

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the utility industry has 428.5 thousand jobs in 2010 and is expected to decline at an average rate of 3 thousand jobs per year f

Aleksandr-060686 [28]

Answer: 7%

Step-by-step explanation:

Given: Initial jobs = 428.5 thousand

Average rate of declining of jobs from 2010 to 2020 = 3 thousand jobs per year

From 2010 to 2020 , there are 10 years.

Total jobs declines till 2020 = 10 x (3 thousand)

= 30 thousand (Change in jobs)

Now, utilities percent change for 2010 to 2020 : $\dfrac{change \ in \ job\ numbers}{Initial\ jobs}\times 100$

$=\dfrac{30}{428.5}\times100\\\\\approx7.00\%$

Utilities percent change for 2010 to 2020 = 7 %

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2 years ago

Solve for the variable b. 5a(b - c ) = d

anyanavicka [17]

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2 years ago

Calcula el área lateral total de una pirámide hexagonal de 16 cm de arista básica y 28 cm de arista lateral

JulsSmile [24]

Answer:

Srry I need points to see answers :(

Step-by-step explanation:

3 0

2 years ago

You are 5 feet tall and cast a 10-foot shadow. A flagpole nearby casts a shadow that is 28 feet. Which equation can you use to s

tekilochka [14]

H= s/2
S is shadow
So
h=10/2 = 5

4 0

3 years ago

I dont really know how to do soh cah toah. please help me find x.

Ipatiy [6.2K]

First notice that the triangle with sides $x,y,a$ and the triangle with sides $z,a+b,x$ are similar. This is true because the angle between sides $x,y$ in the smaller triangle is clearly $30^\circ$ , while the angle between sides $y,z$ in the larger triangle is clearly $60^\circ$ . So the triangles are similar with sides $x,y,a$ corresponding to $a+b,z,x$ , respectively.

Now both triangles are $30^\circ-60^\circ-90^\circ$ , which means there's a convenient ratio between its sides. If the length of the shortest leg is $\ell_1$ , then the length of the longer leg is $\ell_2=\sqrt3\ell_1$ and the hypotenuse has length $\ell_3=\sqrt{{\ell_1}^2+{\ell_2}^2}=2\ell_1$ .

Since $x$ is the shortest leg in the larger triangle, it follows that $a+b=2x$ , so $a+b=15=2x\implies x=\dfrac{15}2$

4 0

3 years ago