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zubka84 [21]
2 years ago
7

Solve the system of equations.

Mathematics
1 answer:
KatRina [158]2 years ago
5 0
Solve by Substitution
Answer:
x = -5
y = -2
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What is the slope of the line that contains the points (-2,5) and (6, -3)?
mel-nik [20]

Answer:

-1

Step-by-step explanation:

Attached is a picture of slope formula:

1) Apply slope formula given two points:

(5--3)/(-2-6)

2) Simplify:

8/-8

3) Divide:

-1

3 0
3 years ago
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sashaice [31]

Answer:

An 8-pack of frozen waffles costs $6.91. What is the unit price, rounded to the nearest cent?

Step-by-step explanation:

it is jashdsdhkjasdhjsd

6 0
3 years ago
Cathy cut 2 apples into 6 slices each she ate 9 slices which expresion matches the words
iogann1982 [59]
The expression to go with the words is 2x6-9 

3 0
3 years ago
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Given: ∆ABC, m∠C = 90° CB = 8, m∠B = 38º Find the area of a circumscribed circle. Find the area of the inscribed circle.
vitfil [10]

Answer:

Circumscribed circle: Around 80.95

Inscribed circle: Around 3.298

Step-by-step explanation:

Since C is a right angle, when the circle is circumscribed it will be an inscribed angle with a corresponding arc length of 2*90=180 degrees. This means that AB is the diameter of the circle. Since the cosine of an angle in a right triangle is equivalent to the length of the adjacent side divided by the length of the hypotenuse:

\cos 38= \dfrac{8}{AB} \\\\\\AB=\dfrac{8}{\cos 38}\approx 10.152

To find the area of the circumscribed circle:

r=\dfrac{AB}{2}\approx 5.076 \\\\\\A=\pi r^2\approx 80.95

To find the area of the inscribed circle, you need the length of AC, which you can find with the Pythagorean Theorem:

AC=\sqrt{10.152^2-8^2}\approx 6.25

The area of the triangle is:

A=\dfrac{bh}{2}=\dfrac{8\cdot 6.25}{2}=25

The semiperimeter of the triangle is:

\dfrac{10.152+6.25+8}{2}\approx 24.4

The radius of the circle is therefore \dfrac{25}{24.4}\approx 1.025

The area of the inscribed circle then is \pi\cdot (1.025)^2\approx 3.298.

Hope this helps!

6 0
3 years ago
Given that f(x)=x/2+5,<br> a)find f(2)<br> b)find f^-1(x)<br> c)find f^-1(5)
Aleks04 [339]
A) 6
b) x/f
c) 5/f

Mark brainliest please


Hope this helps you
8 0
2 years ago
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