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lubasha [3.4K]
2 years ago
13

HURRY PLEASE

Mathematics
1 answer:
vodomira [7]2 years ago
5 0
Y = 1x -70
I think this is ittt
You might be interested in
Write the explicit rule of the arithmetic sequence that has a first term of 3 and a fourth term of 18
mr Goodwill [35]

Answer:

a_{n} = 5n - 2

Step-by-step explanation:

The nth term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given a₄ = 18 , then

a₁ + 3d = 18 , that is

3 + 3d = 18 ( subtract 3 from both sides )

3d = 15 (divide both sides by 3 )

d = 5

Then

a_{n} = 3 + 5(n - 1) = 3 + 5n - 5 = 5n - 2 ← explicit rule

5 0
3 years ago
9x2 − 16x + 60 = 0
Anton [14]
A. that is b^2-4ac
for
ax^2+bx+c
the deterimant (part under the radicand)
is b^2-4ac
if it is
1. less than 0 then there are no real solutions
2. eqal to 0 then there is 1 real solution
3. greater than 0, there are 2 real roots
9x^2-16x+60
b^2-4ac=(-16)^2-4*9*60=256-2160<0
no real solutions




B. grouping
ac method
4 times -5=-20
what 2 numbers multiply to get -20 and add to get 8?
-2 and 10
seperate the middle number to get that
4x^2-2x+10x-5=0
(4x^2-2x)+(10x-5)=0
2x(2x-1)+2(2x-1)=0
(2x-1)(2x+2)=0
set equal to 0

2x-1=0
2x=1
x=1/2

2x+2=0
2x=-2
x=-1

x=1/2 or -1
3 0
3 years ago
A recipe that makes 6 biscuits uses 2 cups of flour. Complete the scale line to find the number of cups of
Vanyuwa [196]
My apologies this is only for a reward to ask questions myself .
8 0
3 years ago
If Serena selects 4 samples from the table, which row
defon

Answer: 1: row 3

2: Row 2

3: 6 and 10

Step-by-step explanation:I just did it

8 0
4 years ago
Read 2 more answers
The hyperbola with center at (4, 5), with vertices at (0, 5) and (8, 5), with b = 2.
galina1969 [7]
The standard form of hyperbola is:
(x-h)²/a²-(y-k)²/b²=1
center:(4,5)
Length of the horizontal transverse axis: 8-5=3=2a
thus
a=3/2
a²=9/4
b=2
b²=4

Hence the equation will be:
(x-4)²/(9/4)-(y-5)²/4=1
simplifying this we get:
[4(x-4)²]/9-(y-5)²/4=1
8 0
4 years ago
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