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Goshia [24]
3 years ago
14

What is 5x+7=-3-9 what does x represent

Mathematics
1 answer:
Verizon [17]3 years ago
7 0
5x + 7 = -3 - 9

First, simplify -3 - 9 to get -12. / Your problem should look like: 5x + 7 = -12
Second, subtract 7 from both sides. / Your problem should look like: 5x = -12 - 7
Third, simplify -12 - 7 to get -19. / Your problem should look like: 5x = -19
Fourth, divide both sides by 5. / Your problem should look like: x =  -\frac{19}{5}

Answer as fraction: x = - \frac{19}{5}
Answer as decimal: x = -3.8

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Help me with this pleaae
marissa [1.9K]

Answer:

(D) 30pi inches

Step-by-step explanation:

First, we use the given volume, the given height, and the formula of the volume of a cylinder to find the radius of the base. Then we use the radius of the base to find the circumference of the base.

volume = \pi r^2 h

volume = 6750 \pi~in.^3

We set the formula equal to the volume and replace h with 30 in.

\pi r^2 h = 6750 \pi~in.^3

\pi r^2 \times 30 ~in. = 6750 \pi~in.^3

Divide both sides by 30pi in.

r^2 = 225 ~in.^2

Take the square root of each side.

\sqrt{r^2} = \sqrt{225 ~in.^2}

r = 15~in.

The radius of the base is 15 in.

Now we use the radius of the base and the formula of the circumference of a circle to find the answer.

circumference = 2 \pi r

circumference = 2 \pi \times 15~in.

circumference = 30 \pi ~in.

6 0
3 years ago
Quick plz help asap marking brainliest for first answer as long as you include steps !!!
Akimi4 [234]

Answer:

a=2.48

c=9.52

Step-by-step explanation:

a+c=12

4a+7.5c=72.5 Given


a+c=12

-4a-7.5c=-72.5 multiply the equation by negative 1


-3a-6.5c=-60.5 simplify


-3a=-60.5+6.5c add 6.5c to both sides


a=-20.17+2.17c divide it by 3

now you would take that equation and plug it into an equation you already have since you have something to plug in for a, the easiest one to do is a+c=12

(-20.17+2.17c)+c=12 plug in the equation


-20.17+3.17c=12 simplify by solving for c


3.17c=30.17 add 20.17 to both sides


c=9.52 divide both sides by 3.17

now since you have found c, you can plug it in to you equation to solve for a now (use the ones from the second step).  I am using the equation a+c=12.

a+9.52=12 plug in the variable and solve for a


a=2.48 subtract 9.52 to both sides


a=2.48

c=9.52

7 0
3 years ago
What is the quadratic factorization of <br>x^2+5x+6=?​
dolphi86 [110]

Answer:

(x+3)(x+2)

Step-by-step explanation:

I can't explain it well, but I call it "reverse foil."  

3 0
3 years ago
Read 2 more answers
A pie is 3/4 and 2/3 of the pie is eaten what is left
Sidana [21]
Answer:
1/12 is left

Step by step explanation:
Find the common denominator which is 12 then you would get 9/12 (Originally 3/4) and 8/12 (Originally 2/3) and then you subtract which gets you 1/12
4 0
2 years ago
Use the rule to write the first five terms of the pattern . rule :add 8, subtract 4. first term :13
Gnesinka [82]
1. 17  
2. 21
3. 25
4. 29
5. 33
Just take the 13, then add 8, then subtract 4, then with what you got keep going on to the next term.
3 0
2 years ago
Read 2 more answers
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