Answer:
0
Step-by-step explanation:
4 + 0 = 0
Graph the equation y = -x^2+ 8x – 15 on the accompanying set of axes. You must plot 5 points including the roots and the vertex. Using the graph, determine the roots of the equation –x^2 + 8x – 15 = 0.
Answer:
Graph below
Step-by-step explanation:
Graph of the Quadratic Function
We are given the function:
[tex]y=f(x)=-x^2+8x-15[/tex]
Select 5 values of x={2,3,4,5,6}
And calculate the corresponding values of y:
[tex]f(2)=-2^2+8*2-15=-4+16-15=-3[/tex]
[tex]f(3)=-3^2+8*3-15=-9+24-15=0[/tex]
[tex]f(4)=-4^2+8*4-15=-16+32-15=1[/tex]
[tex]f(5)=-5^2+8*5-15=-25+40-15=0[/tex]
[tex]f(6)=-6^2+8*6-15=-36+48-15=-3[/tex]
We have obtained the points
(2,-3) (3,0) (4,1) (5,0) (6,-3)
Now we plot them in the graph below.
It can be noted three remarkable points:
The vertex is located at (4,1)The roots are located at (3,0) and (5,0)The roots of the equation
[tex]-x^2+8x-15=0[/tex]
Are x=3 and x=5.
What is the value of y? Show you’re work
Answer:
Y = 32
Step-by-step explanation:
First traingle is 180 degrees
So 180 - 52 = 128
Then 2y + 2y = 4y
So now 128/4 = 32
If you wanna checl ur answer just put the number in and check if it equal to 180
A subway car travels at a rate of 32 meters per second. How far does it travel in 16 seconds? Use d= r x t *
Answer:
distance= 16×32
d= 512
got it?
Please help
Due asap SHOW a workings please
Answer:
A
Step-by-step explanation:
1) first there are a few rules we need to know:
a) the sum of any two sides of a triangle is always larger than the 3rd side
b) the difference between any two sides of a triangle is always smaller than the 3rd side;
hence,
3+4=7
4-3=1
triangle 3,4,5 follows all the rules,
triangle 13,2,11:
11+2=13
the sum of any two sides must always be GREATER than the 3rd side-so this is not an option
triangle 10,4,5
5+4=9
9<10
not an option
lead has a density of 11.35g/cm'3. a lead ball weighs about 2kg. what is the radius of this ball
Answer:
The radius of the ball is 3.48 cm
Step-by-step explanation:
Density
The density of a substance is the mass per unit volume. The density varies with temperature and pressure.
The formula to calculate the density of a substance of mass (m) and volume (V) is:
[tex]\displaystyle \rho=\frac{m}{V}[/tex]
The density of lead is \rho=11.35\ g/cm^3 and the mass of a ball of lead is m=2 kg=2,000 g. We can calculate the volume by solving for V:
[tex]\displaystyle V=\frac{m}{\rho}[/tex]
[tex]\displaystyle V=\frac{2000\ g}{11.35\ g/cm^3}[/tex]
[tex]V=176.2115\ cm^3[/tex]
Since the shape of the object is a sphere, and the volume of a sphere of radius r is:
[tex]\displaystyle V=\frac{4}{3}\cdot \pi\cdot r^3[/tex]
We can solve for r and obtain:
[tex]\displaystyle r=\sqrt[3]{\frac{3V}{4\pi}}[/tex]
Substituting:
[tex]\displaystyle r=\sqrt[3]{\frac{3*176.2115}{4\pi}}[/tex]
[tex]\displaystyle r=\sqrt[3]{42.0674}[/tex]
[tex]\boxed{r=3.48\ cm}[/tex]
The radius of the ball is 3.48 cm
Marcel and Floyd are playing games at an arcade. Marcel has $8.25 and is only playing $0.25 games. Floyd has $9.75 and is only playing $0.75 games. Jorge wants to find the number of games after which Marcel and Floyd will have the same amount of money remaining. Jorge’s work is shown below.
Let x = the number of games played.
Equation: 8.25 minus 0.25 x = 9.75 minus 0.75 x. Step 1: negative 1.50 minus 0.25 x = negative 0.75 x. Step 2: negative 1.50 = 0.50 x. Step 3: negative 3 = x.
Jorge knows his answer is incorrect because it does not make sense to have a negative number of games. What is Jorge’s error?
The variable x should represent the amount of money left.
From Step 1 to Step 2, Jorge did not add 0.25x correctly to both sides.
The equation should have sums on both sides.
From Step 2 to Step 3, Jorge should have subtracted 0.50x from both sides.
Answer:
The variable x should represent the amount of money left.
Step-by-step explanation:
im not sure but this one makes sense
Answer:
The Answer to this problem is (A)
St)ep-by-step explanation:
The variable x should represent the amount of money left.
What single decimal multiplier would you use to decrease by 19% followed by a 17% decrease?
Answer:
0.81 & 0.83
Step-by-step explanation:
I need help what is the diameter of this circle?
Answer:
14cm
Step-by-step explanation:
the diameter is 2x the radius
What is the product?
Answer:x=45.6
Step-by-step explanation:
Answer:
(x^2 - 5x^2 + 4x) / 2x + 8
Step-by-step explanation:
(x^2 - 16) / 2x + 8 * (x^3 - 2x^2 + x) / (x^2 + 3x -4)
(x^5 - 2x^4 - 15x^3 + 32x^2 -16x) / 2(x - 1)(x + 4)(x + 4)
x(x-1)(x-1)(x+4)(x-4) / 2(x - 1)(x + 4)(x + 4)
(x^3 -5x^2 +4x) / 2x + 8
Line k is parallel to line l. Lines k and l are parallel. Lines m and n intersect to form 2 triangles. The top triangle has angles 1, 2, 3 and the bottom triangle has angles 4, 5, 6. Which angle is congruent to Angle 4? Angle 1 Angle 2 Angle 5
Answer:The line that is congruent to angle 4 is angle 1
hope this helped :)
Answer:
a
Step-by-step explanation:
Solve for a missing factor,
1. ____ x 10 = 320
2. 10 x 17 = ____
3. ____ tens = 290
Answer:
1. 32
2. 170
3. 29
Step-by-step explanation:
1. is just 10 divided by 320, which gives you 32
2. is 10 times 17 which is 170
3. you need 29 tens to get 290.
−2(x + 9) + 25 = 14 − 3x
(step by step pls)
Answer:
-2x+18+25=14-3x
collect like terms
-2x+3x=14-25-18
x=29
Kevin bought a used guitar at a garage sale
for $150. He fixed it up and sold it for
$200. What was the approximate percent of
increase?
Answer:
34%
Step-by-step explanation:
Answer
33.3%
Step-by-step explanation
PLEASE PLEASE HOW MANY TIMES CAN I SAY PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer like
Answer 1.___________
Answer 2.___________
Answer 3.___________
Answer 4.___________
Answer 5.___________
Solve the quadratic equation 3x^2-9x+1=0.
Please help.
Answer:
Exact Form-9+√69÷6
Decimal form-2.88443731
Step-by-step explanation:
helpppppppppppppppp i dont know this
Answer:
f(- 3) = - 16
Step-by-step explanation:
To evaluate f(- 3) with x = - 3 in the interval x ≤ - 2, then
f(- 3) = 5x - 1 = 5(- 3) - 1 = - 15 - 1 = - 16
Quick whoever gives the right answer gets brainliest
Answer:
The independent variable (IV) is the amount of hamburgers
Step-by-step explanation:
The amount of hamburgers influence the sale amount.
5(x-2)= 3(x+4)
What is the answer to this equation?
Answer:
x = 11
Step-by-step explanation:
5x-10=3x+12
5x-3x=12+10
2x=22
x =11
Example #2: Solve for d:
cd = 10
Answer:
Step-by-step explanation:
All you can do is solve for d in terms of C.
Divide both sides by c
cd/c = 10 / c
The c s cancel.
d = 10/c
PLEASE HELP ITS IMPORTANT omll
Answer:
F(x)= 3x-4
Step-by-step explanation:
To find the slope use the formula y2-y1
x2-x1
(2,2)
(0,-4)
-4-2 = -6 = 3x
0-2 -2
Please answer this question its easy.
Answer:
ok if its wrong then dont ask on period
Step-by-step explanation:
Fill in the blanks below in order to justify whether or not the mapping shown
represents a function.
Set A: 1,2,9
Set B: 0,4,6,5
Answer:
wheres the picture?
Step-by-step explanation:
If the camper leader has 12 campers, how much does she spend on books?
Answer:
bro how she got 12 campers
Step-by-step explanation:
HELP ME PLS...................TY
Answer:
E
Step-by-step explanation:
the only one where all the pieces of the equation have the same signs
Help me pleasee .. the question is in the picture.. please and thank you
Answer:
y = -4x+5
Step-by-step explanation:
Goes up the y-axis by +5, then, remember: rise over run for slope. In this case, you go down 4 and to the right 1, so -4/1 which is -4.
helpp ill mark u as brain list
Answer:
6
Step-by-step explanation: if im wrong then sorry i couldnt really see
Answer:
They are each one off
Step-by-step explanation:
Please can i get help
Answer:
[tex]\frac{1}{3}x+\frac{1}{2}[/tex]
Step-by-step explanation:
hope this helps :)
i need help with these asap i will award brainleast for whoever gets it right *ONLY ANSWER IF U KNOW PLEASE*
Answer:
Q1) a = 60
Q2) A = 64
Q3 = A =
Samantha buys a shirt that costs $28.50. She uses a
30% coupon. What will Samantha pay for the shirt?
Which is the better buy on potatoes?
3 lbs. for $.90
5 lbs. for $1.60
Answer:
3 pounds for 90 cents.
Step-by-step explanation:
The 5 pound bag costs 32 cents a pound
The 3 pound bag is 30 cents a pound
