Help me please
It about linear equations
Answers
Answer:
plant 1 i think
Step-by-step explanation:
Answer:
Plant 2 grew faster
Step-by-step explanation:
The slope of plant 1 is 3
(each day the plant grew 3cm)
The slope of plant 2 is 5
(each day the plant grew 5cm)
The slope of plant 3 is 1.5
(each day the plant grew 1.5cm)
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Which sequence is geometric and has 1/4 as its fifth term and 1/2 as the common ratio?…, 1, 1/2, 1/4, 1/8, … …, 1/4, 1/2, 1, 2,… …, 1/72, 1/36,1/18, 1/9, … …, 8, 4, 2, 1, …
Ans is 16/9 . But I want the method
be
?
The baker can make 28 cakes
in 7 days. How many cakes can
the baker make in 5 days?
B
Enter your text here
Answers
Answer:
20 cakes
Step-by-step explanation:
Given
28 cakes in 7 days
Required
Determine the number of cakes in 5 days
Represent the required with x. The question illustrates proportionality.
First, we need to represent the given and required as a ratio
Convert ratios to fraction
Solve for x
(Use the letter to represent the variable.)
?=0
Answers
The quadraticequation is 4x² - 20x - 24 = 0 whose roots are-1 and 6.
What is a quadratic equation?
The quadratic equation is defined as a function containing the highest power of a variable is two.
The roots are given in the question, as follows:
-1 and 6
As we know that the standard quadratic equation ax² + b x + c = 0.
Since the leading coefficient of the quadratic equation is 4
So, a = 4
The sum of roots = -b/a
-1 + 6 = -b/4
5 = -b/4
b = -20
The multiplication of roots = c/a
-1 × 6 = c/4
c = -24
So, the quadratic equation is 4x² - 20x - 24 = 0.
Learn more about quadratic function here:
#SPJ2
You've got a=4
-b/a=sum=-1+6=5 so b=-20
c/a=product=-1*6=-6 so c=-6
Final equation:
B.x2 + 4
C.9x2 – x – 36
D.25x2 – 36
Answers
Answer
D.25x2 – 36
Explanation
A. x² – 16x + 64
product = 64
sum = -16
factors: -8 and -8
x² – 16x + 64 = x² - 8x - 8x + 64
= x(x - 8) - 8(x - 8)
= (x - 8)(x-8) = (x-8)² ⇒ Not a difference of squares
B.x² + 4 = (x² + 2²) ⇒ Not a difference of squares
C.9x² – x – 36
product = - 324
sum = -1
Factors: none
9x² – x – 36 ⇒ Has no perfect roots.
D.25x² – 36
25x² – 36 = (5x)² - 6² ⇒ This is the difference of squares.
Answer D
25x²-36=(5x)²-6²
x - y = 3
( ______ , ______ )
Answers
x - y = 3 ⇒ x = 3 + y
4 (3+ y) + y = 2
12 + 4y + y = 2
12 + 5y = 2
5y = 2- 12
5y = -10
y = -10/ 5
y = -2
x = 3 + y ⇒ 3 + (-2) ⇒ 3 - 2 = 1
(1, -2)
Answers
Answer:
x=11
Step-by-step explanation:
x-7=4
x-7+7=4+7
x=11