The four steps for solving linear systems are;
Graphical methodBy substitution methodBy elimination methodBy augmented matrixSolving linear systemsA variety of ways for solving linear systems exist which include;
Graphical method by seeking the point of intersection.Substitution method involving making a variable the subject of the formula and substituting accordingly.Elimination involves manipulation to get rid of a variable by means of subtraction or addition.Augmented matrices are used to solve linear systems.Read more on solving linear systems;
https://brainly.com/question/384631
Answer:
graphing
algebraic methods
using inverse matrices
transforming an augmented matrix to reduced row echelon form
Cramer’s rule
Step-by-step explanation:
Simplify expression giving brainliest to first correct answer
Answer: a
Step-by-step explanation:
Answer:
-360
Step-by-step explanation:
Use PEMDAS
unit 8 right triangles and trigonometry homework 1
Answer:
x = 31.8
Step-by-step explanation:
From the picture attached,
By applying Pythagoras theorem in right ΔADC,
AC² = AD² + CD²
(22)² = AD² + (16)²
AD² = 484 - 256
AD = √228
= 2√57
Now we apply Pythagoras theorem in right ΔADB,
AB² = AD² + DB²
x² = 228 + (44 - 16)²
x² = 228 + 784
x² = 1012
x = √1012
= 31.81
≈ 31.8
The side x is an hypotenuse side to one of the right triangles formed by
altitude of the given triangle that has solid lines.
x is approximately 31.812
Reasons:
The figure shows a triangle with an altitude that forms two triangles inside
the main triangle.
By Pythagoras's theorem, we have;
For the right triangle on the left;
22² = h² + 16²
h² = 22² - 16² = 228
h² = 228
h = √228 = 2·√57
h = 2·√57
In the right triangle to the right, we have;
The length of the top base, b = 44 - 16 = 28
The square of the hypotenuse, x² = h² + b²
∴ x² = 228 + 28² = 1012
x = √(1012) = 2·√253
x = 2·√253 ≈ 31.812
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Hellp pls. This is not a test, so pls do not report.
What is the area of the unshaded portion of this figure?
Answer:
its D 162
Step-by-step explanation:
First, subtract 12 by 18 to find the length that gives you 6 then do 6x9 to find the area of the square then divide by 1/3 to find the triangle
Choose the measure that is approximately equivalent to 9 kilometers.
A.4.5 mi
B.5.6 mi
C.7.39 mi
D.14.5 mi
9 miles is approximately equivalent to 5.6 miles.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
We know 1 mile is approximately equivalent to 1.6 kilometers or 1.6 kilometers is equivalent to 1 mile.
∴ 9 kilometers is equivalent to (9/1.6) miles.
= 5.6 miles.
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If AB bisects 2 CAF, and angle EAF = 66°, then the angle BAF =
Answer:
33
Step-by-step explanation:
Natalie borrowed money from her parents to pay for a trip
Answer: wow nice
Step-by-step explanation:
6.
Marci has 30 fish in her aquarium. Only 6 of the fish are
guppies. The rest of the fish are black mollies. Which
fraction shows the ratio of guppies to black mollies in the
aquarium?
Answer:
6/24
Step-by-step explanation:
Which relation is not a function?
Which are vertical angles to 4?
Answer: Angle 1 only
Vertical angles are angles formed when we cross two lines like this. They are opposite one another. The other pair of vertical angles are angle 2 and angle 3.
help and u get the brain thing
Answer:
16%
Step-by-step explanation:
An airplane can ascend at a rate of meters in of a second. How many meters can the airplane ascend in one second?
A. 35
B. 52 1/2
C. 78 3/4
D. 39 3/4
Answer:
78 3/4 I think is the answer
3x > 2x - 5
What is the answer?
Answer:
inequality form
x > - 5
for interval notation
(-5 , ♾️) .
42 is what percent of 70
What is 42% of 70 ?
Answer:
29.4
Step-by-step explanation:
42%= 0.42
70*0.42=29.4
Answer:
60%29.4Step-by-step explanation:
42 / 70 = 0.6 * 100% = 60%
Turn the percentage into a decimal.
42% = 0.42
Multiply.
70 * 0.42 = 29.4
Best of Luck!
Find y'' for y = e 10x + y
What number can be added to -2 to get a sum of 0? A-2 B0 C 2
Answer:
C) 0
Step-by-step explanation:
-2+2=0
how many $20 dollar bills equal $1,000?
Answer:
50 $20 bills equals $1,000
Step-by-step explanation:
1000 / 20=50
50 $20 bills equal $1000
What is the unitary method?The unitary method is a method in which you find the value of a unit and then the value of a required number of units.
Given here $1000 bill to find its $20 equivalent we divide the amount with 20 thus $20 equivalent of $1000 is $1000/20=50
Hence, $1000 bill equivalent of $20 is 50
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the graph shows a proportional relationship between a person's total savings in dollars and the number of weeks they have been saving write an equation that models the savings.
the equation y=__ models the savings
Answer:
54x
Step-by-step explanation:
The equation y = 45 models the saving.
What is the point-slope form of a line?If m is the slope of the line that passes through the point (x₁, y₁), then the equation of the line is y - y₁ = m (x - x₁).
Given the graph of the equation.
Note that the graph passes through points (0,0) and (2,90).
The slope of the line is:
m = (90 - 0)/(2 - 0)
m = 45
The equation of the line with a slope of m = 45 and passes through (0,0) is:
y -0 = 45(x - 0)
y = 45x
Hence, the equation y = 45 models the saving.
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Let the graph of g be a vertical shrink by a factor of 1/5 followed by a translation 8 units down of the graph of f(x) = x^2
Write a rule for g.
g(x) =
Using translation concepts, it is found that the rule for g is:
[tex]g(x) = \frac{x^2}{5} - 8[/tex]
--------------------------------
The parent function is: [tex]f(x) = x^2[/tex].Shrinking a function f(x) vertically by a factor of [tex]0 < a < 1[/tex] is equivalent to: [tex]a \times f(x)[/tex]f(x) by a factor of 1/5:[tex]\frac{1}{5} \times f(x) = \frac{1}{5} \times x^2 = \frac{x^2}{5}[/tex]
Shifting a function down a units is the same as finding [tex]f(x) - a[/tex].Down 8 units, then, the rule for g is:[tex]g(x) = \frac{x^2}{5} - 8[/tex]
A similar problem is given at https://brainly.com/question/11000713
Josie has $ 47 left on her checking account. if she writes for $55, what will Josie' s balance be?
Answer:
$102
Step-by-step explanation:
1
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3
4
5
7
9
10
Which graph shows the solution set for 2x+3 >-9?
8 -7
-2 -1 0 1 2
→
6 -5 -4 -3 -2 -1 0 1 2
-8 7 6 5 4 3 2
0
1 2
-8 -7 -6
-3 -2 -1 0
1
2.
Answer:
6 -5 -4 -3 -2 -1 0 1 2
Step-by-step explanation:
Multiply 16.852 × 0.86
Answer:
14.49272 or 14.5 (when rounded)
Step-by-step explanation:
what is equevelent to 5/7
The picture below has got me stuck
Answer:
X=42
Step-by-step explanation:
when the question says that ABCD ~ EFGH that's just saying that they are equal.
AB = 16 FE = 10 the first shape has sides that are 6 longer than the second shape.
next, to find X in FG, it's going to be BC - 6 = X - 4 = FG (aka 30 - 6 = 42 - 4 = 20).
i hope thought this out right for you, and hope that helps. :)
Today, 6 friends went out for lunch. Their total bill was $28.86, including tax and gratuity. They decided to split the bill equally and each paid with a $10 bill. How much money will each person get back?
Answer:
5.19
Step-by-step explanation:
first do 28.86 / 6 to find out how much each paid. then subtract that number (4.81) from 10
Answer - Every Person should get $5.19
Step-by-step explanation:
what i did is 6 x 10 = 60 then 60 - 28.86 = 31.14 / 6 = 5.19 Your welcome.
Who tryna okay among us??
Answer:
(7i^17+42.628%*1037)(437^2-281i)^19
Step-by-step explanation:
Itll all make sense
M e e e e e ??
Hope you have a great day!
Someone please help me with this (look at the image above)
9514 1404 393
Answer:
a) base: 29.4377 cm
b) hypotenuse: 30.7827 cm
c) area: 132.470 cm²
d) perimeter: 69.2204 cm
Step-by-step explanation:
a) The mnemonic SOH CAH TOA reminds you that ...
Tan = Opposite/Adjacent
tan(17°) = (9 cm)/base
base = (9 cm)/tan(17°) = 29.4377 cm
__
b) The sine relation could be used in the same way to find the hypotenuse:
hypotenuse = (9 cm)/sin(17°) ≈ 30.7827 cm
However, we're instructed to use the Pythagorean theorem. So, we have ...
hypotenuse = √(base² +(9 cm)²) ≈ √(886.577 +81) cm ≈ 30.7827 cm
__
c) The area is half the product of the base and height:
A = 1/2bh
A = (1/2)(29.4377 cm)(9 cm) ≈ 132.470 cm²
__
d) The perimeter is the sum of side lengths:
P = base + hypotenuse + height
P = (29.4377 +30.7827 +9) cm = 69.2204 cm
What does “No values of x make the equation true.” Mean?
Answer:
It means that there is no solution to the equation
Step-by-step explanation:
Step-by-step explanation:
There are some equations for which there is no value of x that can make both of them true at once.
Take [tex]\frac{1}{x+3} +\frac{1}{x-3} =\frac{6}{x^2-9}[/tex] as an example. Let us see what happens when we try to solve for x.
[tex]\frac{1}{x+3} +\frac{1}{x-3} =\frac{6}{x^2-9} \\\\\frac{x-3}{x^2-9} +\frac{x+3}{x^2-9} =\frac{6}{x^2-9} \\\\\frac{2x-6}{x^2-9} =0\\\\\frac{2(x-3)}{(x+3)(x-3)} =0\\\\\frac{2}{x+3} =0\\\\2=0(x+3)\\\\2=0[/tex]
As you can see, the end of our "solution" gave us 2=0, which is not true. This means that there are no solutions to this equation. Therefore, there are no values of x to make this equation true.
if there are 1 ,200 calories in 8 oz of hot fudge, how many calories are in 3 caloz of hot fudge?
Answer:
450!
Step-by-step explanation:
1200/8=150
150x3-450
Which of the following is a polynomial?
Answer:
C
Step-by-step explanation:
Only C is a polynomial function. It is recognizable as such by the positive, integer power x^4. The others have negative powers, which eliminates them.