Answer:
x2 + 8x – 65 = 0
Step-by-step explanation:
Complete question
A square picture with a side length of 4 inches needs to be enlarged. The final area needs to be 81 square inches. Which equation can be used to solve for x, the increase in side length of the square in inches? x2 + 4x – 81 = 0 x2 + 4x – 65 = 0 x2 + 8x – 65 = 0 x2 + 8x – 81 = 0
Given the initial side length = 4in
Initial area = L²
L is side length of the square
Initial area = 4²
Initial area = 16 square inches
Area of the enlarged square = 81 square inches
To get the constant term of the expression, we will find the difference in the areas
Difference = 85 - 16
Difference = 65 square units
The coefficient of x will be the 2 *initial area of the square
Given the standard form of an expression as
ax^2 + bx + c
a = 1, b = 2*4 = 8, c = -65
Substitute
x^2 + 8x - 65
This gives the required expression
Answer:
C) x2 + 8x – 65 = 0
Step-by-step explanation:
edge
PLZZZ HELP ASAP LAST ONE TYSM
Answer:
answer: 31.4
Step-by-step explanation:
the formula to finding circumference is just diameter × pi we arent given the diameter so we have to figure it out but what we do know is the radius is half of the diameter so 5 x 2 = 10 so now that we have the diameter we just multiply by pi so 10 × 3.14 = 31.4 Hope this helps!
Answer:
10 π m
Step-by-step explanation:
Given,
Radius ( circle ) = 5 m
To find : Circumference ( circle ) = ?
Formula : -
Circumference ( circle ) = 2πr
Circumference ( circle )
= 2 x π x 5
= 10 π m
Write 5.5 as a mixed number.
Answer:
5 1/2 :)
Step-by-step explanation:
Each state can set its own minimum wage. If the federal and state minimum wages are different, the highest minimum wage is used.
True
False
Answer:
True
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
Wages are usually identified as the money you are paid per hour. For instance, the current minimum wage in the United States, meaning the least per hour an employer can pay a worker, is $7.25 an hour. Minimum wage is determined by the Federal Department of Labor. Individual states can set a higher minimum wage for its citizens. In those instances where the federal and state minimum wages are different, the higher minimum wage is used.
Solve for X
show me what steps to do for this one
Answer:
x = 24
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
120° is an exterior angle of the triangle, then
2x + 3x = 120
5x = 120 ( divide both sides by 5 )
x = 24
Answer:
here ig ..this is all
Step-by-step explanation:
sry if I got wrong
stay safe ...
Which is the ordered pair of represents point d
Answer:
D. (3,2)
Step-by-step explanation:
Answer:
(3, 2)
Step-by-step explanation:
Use the net to find the size of the base and the height of each triangular face of this square pyramid.
z = 6 + 8i
Use the photo for the answer choices
r = 10
θ = tan^-1 (4/3)
Radius = 56.00
θ = 27.00o = 0.47 radians
z = 10 × (cos 53°7'48″ + i sin 53°7'48″)
z = 10[cos(53.13) + i sin (53.13]
A seems like the best option
If the expression above is rewritten in the form a+bi, where a and b are real numbers, what is the value of a?
Answer:
......................................,........
Let's try this again also bots dont respond.
Jonathon kicks a kickball into the air. The height of the ball in feet can be determined using the equation h(t) = 32t - 16t^2 where t is time in seconds. To determine how long the ball is in the air, he would need to calculate what? minimum maximum y-intercept x-intercepts
Which equation is a step in finding the solution to how long the ball is in the air? h(0)=32(0)-16(0)^2
0=16t(2-t)
h(t)=-16(t-1)^2+16
h(3)=32(3)-16(3)^2
Write a number using the following clues:
a multiple of 4
greater than 30 but less than 100
Answer:
Theres a lot of numbers you can choose from 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96,
Step-by-step explanation:
Distance between (-5,2) and (-5,-4)
Answer:
The distance between these two points is 6
Step-by-step explanation:
distance formula
Help me it is due in 30min
Choose the equation of the horizontal line that passes through the point (-5,1)
Answer:
[tex]y = 1[/tex]
Step-by-step explanation:
Every point on a horizontal line has the same y-value. Use the y-value of the point to find the equation of the horizontal line.
Hope it is helpful....Step-by-step explanation:
the line is passing through the point -5,1
the y-coordinare is 1
so y=1
simplify the product (2u-4)(u^2+2u-7) pls don't just give me the answer bc i know the answer but can you pls explain how you got the answer
Answer:
2 • (u - 2) • (u2 + 2u - 7)
Step-by-step explanation:
2.1 Pull out like factors :
2u - 4 = 2 • (u - 2)
Trying to factor by splitting the middle term
2.2 Factoring u2 + 2u - 7
The first term is, u2 its coefficient is 1 .
The middle term is, +2u its coefficient is 2 .
The last term, "the constant", is -7
Step 1: Multiply the coefficient of the first term by the constant 1 • -7 = -7
Step 2: Find two factors of -7 whose sum equals the coefficient of the middle term, which is 2 .
-7 + 1 = -6
-1 + 7 = 6
Right triangle A B C. Side A C is 10 meters, side B C is 20 meters, and hypotenuse A B is blank.
Find the area of the triangle.
a.
620 sq. m
c.
100 sq. m
b.
200 sq. m
d.
180 sq.m
Answer:
C) 100 sq. meters
Step-by-step explanation:
please help i’ll give brainliest
Answer:
Step-by-step explanation:
The answers are 1, 3, and 4 hundred percent sure it is correct
Emily is encouraged to read more than 4 hours each week. It takes her 45 minutes to finish her first book. She divides the remainder of the time equally amongst the other six days. What is the minimum number of minutes she should read each day? Write and solve an inequality. put this is an inequality pls!!
Step-by-step explanation:
x > 4 hours/week
4 hours is 240 minutes
45 minutes/ 1st book
4 hours minus 45 minutes is 3 hours and 15 minutes
3 hours and 15 minutes = 195 minutes
195 minutes ÷ 6 = 32.5 minutes
make the formula working backwards
(240 - 45) ÷ 6 > x
Which graph represents the function f(x) = 4|x|?
Answer:
es la b
Step-by-step explanation:
Use quadratic regression to find
the equation of the parabola
going through these 3 points.
(3,-12), (-2,43), (2,-5)
Answer: y = 1x^2 - 12x + 15
Step-by-step explanation:
help plz 30 points and brainliest! <3
Keisha's teacher gives her the following information:
• m, n, p, and q are all integers and p = 0 and q +0
• A= and B=;
What conclusion can Keisha make?
Answer: b
Step-by-step explanation: b
1st answer gets brainliest!!!
The surface area of this regular pyramid is 1040 cm2. The base is a regular pentagon with side b = 16 cm and slant height l =15 cm. Find its apothem (a).
PLEASE show work :))
a business has the following entires in their budget: $45 expense, $980 income, $249 income, $780 expense, $437 expense. what is the balance of the business's budget?
In the equation y = 1/3x - 1, when x is 9, what is y? *
Answer:
y is 2
Step-by-step explanation:
plug in 9 for x and you get y is 2
Answer:
2
Step-by-step explanation:
Substitute 9 for x and calculate the y value:
y = (1/3)(9) -1 = 2
Can some please help me with this question
9514 1404 393
Answer:
423 in²
Step-by-step explanation:
The area is given by the formula ...
A = 1/2·xy·sin(W)
A = 1/2(32 in)(96 in)sin(16°) ≈ 423.379 in²
The area of ∆WXY is about 423 square inches.
Find the circumference of a circle with radius 4 m. Use a = 3.14.??
Answer:
4 x 2 x 3.14 = 25.12
Step-by-step explanation:
Formula of circumference:
2(just use this number whenever finding circumference) x pi(3.14 or 22/7 depending on what they tell you to use for pi) x radius(half of your diameter or your given radius).
2πr
how do u do that? i dont understand it
Answer: look at the picture
Step-by-step explanation: Hope this help :D
Natalie can bike 10 kilometers per hour faster than Aaron. By the time
Natalie travels 60 kilometers, Aaron has gone 40 kilometers. Find the speed
of Natalie and Aaron.
Please help with this questions
expand -9(9-p)
...................................
Answer:
35
Step-by-step explanation:
Answer:
-81+9p
Step-by-step explanation:
-9(9-p)
-9×9-9×-p
-81-9×-p
-81-(-9p)
-81+9p
9p-81