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irinina [24]
3 years ago
15

A) 4x + 1

Mathematics
1 answer:
tia_tia [17]3 years ago
6 0

Answer:

a) 4x + 1  expression

b) C = 15+ 3n  “it might be a Formula”

c) 3x + 4 = 13 equation

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harry is trying tq solve the equation y=2x^2 -x-6 using the quadratic formula he has made an error in one of the steps below
Sergeeva-Olga [200]

Answer:

Hello :

y = 2x² - x -6

y = 2 ( x² - 1/2 x - 3)

y = 2 (x² -1/2 x + 1/16 -1/16 -3)

y = 2 (( x - 1/4 )² - 49/16).....  the quadratic formula

y = 0 :  ( x - 1/4 )² - 49/16 = 0

( x - 1/4 )² - (7/4)² = 0

( x -1/4-7/4)( x -1/4+7/4)=0

(x -2)(x + 3/2) = 0

x - 2 = 0 or x + 3/2 =0

x = 2 or x = - 3/2



3 0
3 years ago
The image shows a geometric representation of the function f(x) = x2 – 2x – 6 written in standard form. An algebra tile configur
Over [174]

Answer:

f(x)=(x-1)^2-7

Step-by-step explanation:

Standard form:

f(x)=x^2-2x-6

Vertex form:

y=(x-h)^2+k

(h, k) is the vertex

x is the coordinate of the vertex

To find x use the formula:

x=\frac{-h}{2a}

f(x)=x^2-2x-6

a=1

b=-2

c=-6

Substitute:

x=\frac{-(-2)}{2(1)}=1

Substitute x in equation:

f(x)=1^2-2(1)-6\\f(x)=1-2-6\\f(x)=-7

h=1

k=-7

Substitute h, and k into the vertex formula:

f(x)=(x-1)^2-7

3 0
3 years ago
Read 2 more answers
Mrs. Blake's bill at a restaurant was $42.75. She wants to leave the waiter an 18% tip. How much will she pay in all, including
svlad2 [7]
The quick way to do this is to multiply the bill by 1, mult. it again by 0.18, and then add the two results together.  

Better and faster:  Mult. the bill amount ($42.75) by 1.18:

1.18($42.75) = $50.45 (answer)


4 0
3 years ago
5n= 10 2 please help with instructions
pychu [463]
5n = 10^2
n = 20 Because 5 × 20 = 100
8 0
3 years ago
Find sin q if q is an angle in standard position and the point with coordinates (4, 3) lies on the terminal side of the angle.
jolli1 [7]
<span>Let’s say we have a starting point (0,0), the point (4,3) are distance apart at 90 degrees, hence the hypotenuse to those two distance will be 5. Therefore sin q = 4/5.</span>
4 0
3 years ago
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