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Stolb23 [73]
3 years ago
9

Solve the equation b/4 +2=-1

Mathematics
1 answer:
Tema [17]3 years ago
5 0

Answer:

b = -4

Step-by-step explanation:

\frac{b}{4} + 2 = 1\\\\\frac{b}{4} = -1\\\\b = -4

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3:4 because both numbers can be divided by 3
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What is x-3=?<br>February ​
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Step-by-step explanation:

8 0
3 years ago
Solve for x. Use the completing the squares
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3 years ago
Please help me I'm stumped on this​
Sladkaya [172]

Answer: 1300 cm^3, 850 cm^2

Step-by-step explanation:

With a triangular prism, you need to calculate the surface area of the triangle first and then the length. Here's how to solve for the volume (A):

Triangles is b*h/2, plug in the equation

10*13/2

130/2

65

Now use the length of the rest of the shape, which is 20 cm.

65*20=1300

the volume is 1300 cm^3.

for B, finding the surface area requires you to analyze each individual part of the shape.

Each part colored in represents a different shape:

Red:

10*20=200

Blue:

13*10/2=65

65*2=130 (Two triangles)

Green:

13*20=260

260*2=520 (Two rectangles)

Add them all up together.

200+130+520= 850 cm^2

8 0
3 years ago
The sum of two numbers is 9 . one number is nine less than twice the other. find the two numbers.
dimulka [17.4K]
Hello!

To solve this problem, we will use a system of equations. We will have one number be x and the other y. We will use substitutions to solve for each variable.

x+y=9
x=2y-9

To solve for the two numbers, we need to solve the top equation. The second equation shows that x=2y-9. In the first equation, we can replace 2y-9 for x and solve.

2y-9+y=9
3y-9=9
3y=18
y=6

We now know the value of y. Now we need to find x. We can plug in 6 for y in the second equation to find x.

x=2·6-9
x=12-9
x=3

Just to check, we will plug these two numbers into the first equation.


3+6=9
9=9

Our two numbers are three and six.

I hope this helps!
7 0
3 years ago
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