Answer:
no
Step-by-step explanation:
y=x
Substitute the point into the equation
8=7
This is not a true statement, so the point is not a solution
nahhhhhhhhhhhhhhhhhh
A new car is purchased for $42,000 and over time its value depreciates by one half
every 7 years. How long, to the nearest tenth of a year, would it take for the value of
the car to be $5,800?
Answer:
t=20
Step-by-step explanation:
delta math blessed.
Answer:
t=20
Step-by-step explanation:
I do not have one, I apologise.
Help me plzzzz, thanks If you do
hope it's helpful ❤❤❤❤
THANK YOU.
Find the area and perimeter of the shaded region. Stuck on this one can someone help me
Answer:
perimeter-
perimeter outer rectangle = 2 (l+b)
=2×8+9
= 2×17
2×17 =34 cm sq.
perimeter of inner rectangle = 2 (l+b)
= 2×5+3
=2× 8
= 16 cm sq.
perimeter of shaded portion= 34 - 16
= 18 cm sq.
area-
area of inner rectangle =l×b
l×b = 3×5
3×5=15
15 cm sq.
area of outer rectangle =l×b
l×b= 9×8
9×8= 72
72 cm sq.
area of shaded portion = 72 -15 =57 cm sq.
hey there! In second method i have done first area of inner rectangle but you have to do first area of outer rectangle...
hope it helps you....
Answer:
Let A1 = be the large rectangle and A2 the small rectangle
=> Area A1: S1 = a1.b1 => S1 = 8 x 9 = 72m2
=> Area A2: S2 = a2.b2 => S2 = 3 x 5 = 15 m2
=> Area of the remaining surrounding square: S1-S2 = 72-15 = 67m2
=> Perimeter A1: P1 = 2 (a1 + b1) = 2 (9 + 8) = 34m
=> Perimeter A2: P2 = 2 (a2 + b2) = 2 (3 + 5) = 16m
=> Perimeter of the surrounding square: P1-P2 = 34-16 = 18m
Step-by-step explanation:
I need to know what the answer is :)
Which of the equations are true identities?
A. (9k – 8)(9k + 8) = 81k2 + 64
B.(3m +2n)(6m – 4n) = 18m²
18m2 – 8n?
Choose 1 answer:
Answer:
We have two expressions, let's see if they are true or not:
A: (9k - 8)*(9k + 8) = 81*k^2 + 64
To prove this, we only need to start in the left side and see if we can construct the right side:
(9k - 8)*(9k + 8) = (9k)*(9k) + (9*k)*8 - (9k)*8 + 8*(-8)
= (9k)^2 - 8^2
= 9^2*k^2 - 64 = 81*k^2 - 64
This is different than the thing in the original equation, then this one is not an identity.
B) (3m +2n)(6m – 4n) = 18m^2 – 8n
Same as before, we start at the left side and work it out.
(3m + 2n)*(6m - 4n) = (3m)*(6m) + (3m)*(-4n) + (2n)*(6m) + (2n)*(-4n)
= 18*m^2 -12*m*n + 12*m*n - 8*n^2
= 18*m^2 - 8*n^2
Notice that here we have an "n^2" while in the original equation we have only an "n".
This may be an error in the question and the exponent is missing, in that case, this equation would be an identity, but it is not as how is written in the question.
Then neither A nor B are correct.
Answer:
only b
Step-by-step explanation:
(-5, -3); slope = -3/5
turn into y intercept equation please
Alejandro makes donations in the amount of $100 every December to
5 of his favorite charities. He pays for the donations by check. What is the
change in his checking account balance after making these donations?
Answer:
the balance will decreases by 500
-500 represents his account balance
Step-by-step explanation:
B
C
TIMED URGENT! REALLY APPRECIATE SOME HELP! BRAINLIEST!
Calculate the slope of the line passing through the points (-1, -5) and (-9, -1)
a) undefined
b) 0
c) -0.5
d) -2
Answer:
C
Step-by-step explanation:
(y2-y1)/(x2-x1) = slope
y2-y1 = (-1)-(-5) = 4
x2-x1 = (-9)-(-1) = -8
slope = 4/(-8) = -0.5
Charles buys 20 packs of pens.
There are 15 pens in each pack.
Each pack costs £2.50.
Charles sells each pen for 65p but he only manages to sell į of the pens.
How much profit did he make?
Answer:
their will be at least $159
Please help with questions will give brainlsest
Answer: 1. x=3 and y=7
2. x=10 and y=35
3. x=-2/3 y=-2/3 (fraction)
Step-by-step explanation:
After riding the stationary bike for just 8 minutes, Betty had burned 50
calories. How long must she ride if she wants to burn 325 calories?
Answer:
She has to ride for 52 minutes!
Step-by-step explanation:
50/8=6.25
325/6.25=52
6.25*52=325
Answer:
52 minutes
Step-by-step explanation:
50/8=6.25
325/6.25=52
6.25*52=325
Georgia buys 4 books online. Each book is the same price. She has a discount code
for $5 off the entire purchase. She pays a total of $60.
In a survey of 800 people, 32% preferred cats and 27% preferred dogs. How many more people preferred cats than preferred dogs?
Calculate the amount of people on both sides.
32% preferred cats
32% of 800
0.32 × 800 = 256 people
27% preferred dogs
27% of 800
0.27 × 800 = 216 people
So 256 people preferred cats and 216 people preferred dogs.
256 - 216 = 40 people
40 more people preferred cats than preferred dogs
40 people preferred cats more than preferred dog.
What is percentage?Percentage is a measurement to find value of given number out of hundred.
Given that,
Total number of people participated in survey = 800.
Percentage of people who preferred cats = 32%,
And percentage of people who preferred dogs = 27%.
The percentage of people who preferred cats more than preferred dogs
= 32 - 27
= 5 %
The number of people preferred cats more than preferred dogs
= 800 x 5/100
= 40.
There are 40 more people preferred cats than dog.
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HELP ME PLEASEEEE I NEED IT ASAP
Answer:
X = 6
Step-by-step explanation:
Am tired 2 show the work
Answer:
=-6
Step-by-step explanation:
Move all terms containing x to the left side of the equation.
x−4=−10
Move all terms not containing x to the right side of the equation.
Add 4 to both sides of the equation.
x=−10+4
Add −10 and 4
X=-6
I need help multiplying fraction s what is 1/2 * 1/2 and can you add a explanation
Answer:
2 1/2
Step-by-step explanation:
since it two halves multiplied, it'd be 2 1/2. you can also mulitpy decimals to get ur answer
breainliest pls
Marcy wants to paint the sides of the wooden storage chest shown below gray except the white lid. What is the surface area?
Answer:
Surface area = 2,160 in²
Step-by-step explanation:
Given:
Length of box = 15 in
Width of box = 30 in
Height of box = 24 in
Find:
Surface area
Computation:
Surface area = 2h[l+b]
Surface area = 2(24)[30 + 15]
Surface area = 48 x 45
Surface area = 2,160 in²
PQ=RQ
b
140°
P
R
b = [? ]°
pls help me besties
Answer:
b=40 I just took this quiz
Answer:b=40 a=100
Step-by-step explanato a line is 180 degrees, the outside of the triangle is 140 degrees so the inside must be 40 to make 180 and a is also 40 because the triangles sides are the same
to find a we now know that both angles on the bottom 40+40 will add up to 80 and to make a complete triangle we need 180 so the measure of a is 100 degrees
a=100
b=40
Describe at least two events where the probability is 0.
Answer:
world peace, and ending world hunger. Human kind is far too cruel to fix these areas.
Step-by-step explanation:
Being in space without oxygen has a 0% probability of survival.
Cooking noodles is boiling water has a 0% chance of the noodles not cooking.
These may be odd examples but they are accurate.
-Northstar
Solve each equation by factoring.
1) 7x² + 63x = -126
what is the answer for y=__x+__
Answer:
y=1/-4x+4
Step-by-step explanation:
hey
Step-by-step explanation:
Slope (x) is rise/run. From one intersecting point to the next, we find it is moving 4 y down and 1 x over. Using this we conclude the slope is -4/1x (or -4x)
The second number in the system is b, or y-intercept. The line intercepts at 4y. If we combine these together, the outcome is y = -4x + 4
what is 4.0 x 10 by the 2nd power
Find the area of the shape below. All measurements are in miles.
6
8
1
15.23
1
1
The distance traveled by a snowball thrown straight down from the top of a bluff can be calculated with the equation d=ut+12gt2, where d is the distance traveled in meters, u is the initial velocity in meters per second, t is the time in seconds, and g is the acceleration due to gravity, which is 9.8ms2. If the snowball traveled 200 meters in 5 seconds, what was its initial velocity?
Answer:
15.5 m/s
Step-by-step explanation:
Using the equation, d = ut+1/2gt² where all the variables have meaning as given above, making u subject of the formula, we have
d = ut+1/2gt²
d - 1/2gt² = ut
d/t - 1/2gt²/t = u
u = d/t - 1/2gt
Since d = 200 m, t = 5 s and g = 9.8m/s², substituting the values of the variables into the equation, we have
u = d/t - 1/2gt
u = 200 m/5 s - 1/2 × 9.8m/s² × 5 s
u = 40 m/s - 49 m/s ÷ 2
u = 40 m/s - 24.5 m/s
u = 15.5 m/s
So, the initial speed of the snowball is 15.5 m/s
Can someone please help me?
Answer:
The angle between the two sides of the right triangle is aproximately 31.003º.
Step-by-step explanation:
From image attached on question we infer that we need to find the angle between sides of lengths 6 (adjacent leg) and 7 (hypotenuse) in the right triangle. The angle can be found by means of this trigonometric ratio:
[tex]\cos \alpha = \frac{6}{7}[/tex]
[tex]\alpha = \cos^{-1} \frac{6}{7}[/tex]
[tex]\alpha \approx 31.003^{\circ}[/tex]
The angle between the two sides of the right triangle is aproximately 31.003º.
The path of a diver diving off a 10-foot platform can be represented by the function h(x) = - 0.5(x^2 - 4x - 21) where h is the diver's height above water and x is the horizontal distance from the platform (in feet).
What does the positive zero represent?
Answer:
x = -3 and 7
Step-by-step explanation:
Given the path of a diver expressed as;
h(x) = - 0.5(x^2 - 4x - 21)
The positive zero occur at when h(x) = 0
Substitue
0 = - 0.5(x^2 - 4x - 21)
-0.5x^2 + 2x + 10.5 = 0
Multiply through by -10
5x^2 - 20x - 105 = 0
x^2 - 4x - 21 = 0
x^2 - 7x+3x - 21 = 0
x(x-7)+3(x-7) = 0
(x+3)(x-7) = 0
x = -3 and 7
Hence the positive zero displacement occurs at x = -3 and 7
JUST ONE MORE PLEASE PLEASE! IF YOU DUNNO DONT ANWSER I NEED THIS CORRECT OR IM OGNNA BE GETTING A F
Answer:
8
Step-by-step explanation:
-3 + 11 = 8
blank = 8
[tex]\huge\purple {\mid {\fbox {\tt {Solution!}}\mid}}[/tex]
[tex] \longmapsto- 3 + 11 \\ \longmapsto8[/tex]
5 - 9.5 = 5 + __
^^ Enter a number in the space provided to make the equation true.
The complete equation,
5 - 9.5 = 5 - 9.5.
What is an equation?Two algebraic expressions having same value and symbol '=' in between are called as an equation.
Given:
An equation,
5 - 9.5 = 5 + __.
Let the missing number is x.
Simplifying,
-4.5 = 5 + x
x = -9.5
Therefore, the missing term is x = -9.5.
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Tracy began her career making an annual salary of $26,262, and after each year, she has received a 4% raise. if she has been working for 12 years, which of these expressions can be used to calculate how many dollars she made in total during this time?
Answer:
D.
Step-by-step explanation:
You can check with this equation 26262(1.04)^12. gets you the same answer as D.
What is the approximate diameter of a sphere with a volume of 268 cm3?
A. 4 cm
B. 8 cm
C. 12 cm
D. 16 cm
Answer:
B. 8cm
Step-by-step explanation:
radius = 4cm
volume = 4/3 π r³
volume = 4/3 *3.14 *4³ (π = 3.14)
volume = 268cm³
hope it is help you
what is 4.17 x 10 -5 =
Answer: 36.7
Step-by-step explanation:
4.17 x 10 -5 =
41.7-5
=36.7