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2 years ago

2x+8y=5 24x-4y=-15 the solution to the system is ( , ) ( , )

Mathematics

1 answer:

kicyunya [14]2 years ago

3 0

[-½, ¾]; use either "Substitution" or "Elimination" to do this, and you'll see that this answer is correct.

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Write an equation of a line parallel to y=1/2x+3 that passes through (2,5)

tamaranim1 [39]

$y=\frac{1}{2}x+3 \parallel y=mx+b$

Two lines are parallel when their slopes are the same.
$m=\frac{1}{2} \\ y=\frac{1}{2}x+b \\ \\ (2,5) \\ x=2 \\ y=5 \\ \Downarrow \\
5=\frac{1}{2} \times 2 + b \\ 5=1+b \\ b=4 \\ \\ \boxed{y=\frac{1}{2}x+4}
$

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2 years ago

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A function is defined by f(x)=x/4, what is f(-8)

barxatty [35]

F(x) = x/4
so
f(-8) = -8/4 = -2
answer
f(-8) = -2

4 0

3 years ago

Read 2 more answers

PLEASE ANSWER THIS? WHAT IS EG

crimeas [40]

It's the points of the triangle E----------G
They are the twin points

5 0

2 years ago

Use the quadratic formula to solve x2+7x+3. Show all of your work. Then describe the solution.

Mariana [72]

Answer:

Step-by-step explanation:

The coefficients of the quadratic x^2 + 7x + 3 are a = 1, b = 7 and c = 3.

The discriminant is b^2 - 4ac, or 49 - 4(1)(3), or 49-12, or 37.

Because the discriminant is positive, we know that this quadratic equation has two real, different solutions.

-7 ± √37

x = --------------- => x = (-7 + √37)/2 and x = (-7 - √37)/2

In words: This quadratic equation has two real, unequal solutions involving the radicand 37.

7 0

2 years ago

The surface area of a given cone is 1,885.7143 square inches. What is the slang height?

nasty-shy [4]

This question is not complete. This is because it lacks the appropriate diagram containing necessary information to solve this question.

Please find attached the appropriate diagram to solve for this question

Complete Question :

The surface area of a given cone is 1,885.7143 square inches. What is the slant height?

Answer:

25 inches

Step-by-step explanation:

In the diagram, we are given the following information

Height of the cone = 20 inches

Radius of the cone = 15 inches.

The formula for the slant height of a cone represented by l =

l² = r² + h²

l = √(r² + h²)

l = √(15² + 20²)

l = √(225 + 400)

l = √625

l = 25 inches

Therefore, the slant height of this cone = 25 inches

3 0

2 years ago