Answer:
We know that if
y ∝ x²
∴ y = k · x²
Now
y = 8 , x = 4
From above y = k · x²
⇒ 8 = k · 4²
∴ k = 1/2
Again ....
x = 5 , y = ?
y = k·x²
y = 1/2 × 5²
= 25/2 = 12.5
Step-by-step explanation:
The price of a cell phone was marked down by $35. The original price of the cell phone was $212. What was the percentage rate of the discount
Given:
The price of a cell phone was marked down by $35.
The original price of the cell phone was $212.
To find:
The percentage rate of the discount.
Solution:
We have,
Price marked down by= $35
Original price = $212
Now, the percentage rate of the discount is
[tex]Discount\%=\dfrac{\text{Price marked down by}}{\text{Original price}}\times 100[/tex]
[tex]Discount\%=\dfrac{35}{212}\times 100[/tex]
[tex]Discount\%=\dfrac{3500}{212}[/tex]
[tex]Discount\%=16.509434[/tex]
[tex]Discount\%\approx 16.51[/tex]
Therefore, the rate of discount in percentage is 16.51%.
Find the slope and the y-intercept of the line.
y= -5x + 7
A. The slope is..
B. The slope is undefined
Answer:
the slope of y= -5x+7 is m= -5.
Answer:
A. The slope is -5, y-intercept is 7
Step-by-step explanation:
if y=mx+b, and m is the slope, then the slope is negative 5
if y=mx+b, and b is the y-intercept, then the y-intercept is 7
It rained 0.8 inches on Monday. On Tuesday, it rained 0.34 inches less than on Monday. How much did it rain on Tuesday?
The Meyer family spent $65 on dinner and left a 20% tip. What was the total cost of their meal?
A.$85
B.$78
C.$67
D.$13
x+2y=6 5x+3y=2
solve using elimination
express your answer as a coordinate
Answer:
(-2,4)
Hope this helps
CAN SOMEONE HELP FOR THE FIRST TWO QUESTIONS???
Answer:
the equation for the new one would be
y= -3/4 + 3
Step-by-step explanation:
just shift the entire slope by 2 on the Y axis
Give the value of each expression.
7.1- 3.35=___
5/8 + 2/3 - 1/8 =___
6- 2 & 1/2=___
8.9- 4 & 2/5
Answer:
1. 3.75
2. 7/6
3. 7/2 / mixed number 3 and 1/2
4. 4.5
8657.182 in which place is the 2
Answer:
Its in the Thousandths place
The two is in the thousandths
I added a picture for future questions like this
What is the base in the expression 4⁵?
1.4
2.5
3.9
4.20
Answer:
1.4
Step-by-step explanation:
base is 4 option 1 is correct
What is the distance between the following points:
A (25, 20) , B (5, 20)
Answer:
Distance is 20 units
Step-by-step explanation:
;)
An object is launched vertically upward from a 50 foot platform and is modeled by the functions (t) = -1272 +8t + 50.
The object will fall back to the ground after
Select one
seconds because
Select one
cannot be a solution.
helpppp
Question in the picture. Thanks
Answer:
x=100
Step-by-step explanation:
Simply multiply the 1/5 by 20 to get x, since 5*20, you get 100.
Which of the following could represent the unit side length of right triangle ?
3,4,6
10,11,15
5,12,13
8,12,20
Pleaee help
Answer:
8 , 12,20 I think good luck
Answer:
Your Answer would be 5,12,13
Step-by-step explanation:
Use your Pythagorean Theorem for each individual question.
The model represents an equation. What value of x makes the equation true?
Answer:
A. 2.25
Step-by-step explanation:
-3x + 10 = 5x - 8 (Given)
10 = 8x - 8 (Added 3x on both sides)
18 = 8x (Added 8 on both sides)
2.25 = x (Divided 8 on both sides)
There are approximately, 18 men for 2 women in the armed forces. In a group of 90 military personnel, how many would you expect to be women?
Answer: 10 women
Step-by-step explanation:
From the question, we are informed that there are 18 men for 2 women in the armed forces. This gives us a fraction of: 2/18 = 1/9
In a group of 90 military personnel, the number that'll be expected to be women will be:
= 1/9 × 90
= 10 women
Give me weird things to send to a gc
Answer:
ehsbs sbshab abhaba. aabanjajaanaa
2y - 7+ 5y = 0
Step by step work
Answer:
y=1
Step-by-step explanation:
2y+5y-7=0
Combine y: 7y-7=0
Move 7 over: 7y=7
Divide by 7:y=1
. Which of the following equations is(are)
perpendicular to the equation 3x + 5y =- 10?
A. y -- {x-2
B. y = {x+2
C. 5x – 3y =-15
D. y = x+1
Answer:
C . 5x-3y=-15
Step-by-step explanation:
Solve the system of equations.
- 5y + 3x = 3
- 8y + 9x = -12
Point from:
(-4, -3)
Equation Form:
x = -4, y = -3
Jose practiced piano 5 days this week. He practiced 3/4 of an hour each day.
How many hours did jose practice piano this week?
( i wasted all my points for this question)
Answer:
3 hours and 15 min is how long he practiced
On tuesday there were 23 students absent from school. The total number of students at school that day was 372 students. How many students attend the school.
Answer: The number of students attend the school = 349
Step-by-step explanation:
Given: Number of students absent on Tuesday = 23
Total number of students = 372
Number of students attend the school that day = (total students) - (Number of students absent )
= 372-23
= 349
Hence, the number of students attend the school that day = 349
Nancy is replacing the mat on her trampoline
The circular mat has a diameter of 18 feet. What
is the area of the trampoline mat to the nearest
square foot?
18 ft
F. 57 square feet
G. 254 square feet
H. 113 square feet
J. 1,017 square feet
At football practice on Monday, Brandon threw a football into the target 5 times. The next Monday, he tripled the number of targets he hit. On the following Monday, his hits double that of the week before. Write and evaluate a numerical expression to find how many times he hit the target during those three weeks.
Answer:
in all he hit the target 50 times
Step-by-step explanation:
first week he hits 5
second week hits 15=5x3
third week hits 30=15x2
The number of times he hit the target in three weeks is 50.
Definition of a numerical expressionA numerical expression is a mathematical statement that consist of integers joined together by operation symbols. Examples of operation symbols are addition, subtraction, multiplication and division. An example of a numerical expression is 5 + 3.
Numerical expressions that represent the number of times the ball was hitNumber of times the ball hit the target in the first week = 5 times Number of times the ball hit the target in the second week = 5 x 3 = 15 Number of times the ball hit the target in the third week = 15 x 2 = 30Total sum = 30 + 15 + 5 = 50 times
To learn more about numerical expressions, please check: https://brainly.com/question/787279
please help me please will give brainliest to anyone who is right
Answer:
C
Step-by-step explanation:
you have a total of 18 data values which means you have to find the average of the 9th and 10th values; these values would be in the 3000 - 5999 because this interval contains data values 5 through 10
2.05×5 with shown work
Answer:
10.25
Step-by-step explanation:
205 × 5 = 1025
2.05 has 2 decimal places
5 has 0 decimal places
Therefore, the answer has 2 decimal places
1025
10.25
Can you form a right triangle with the three lengths given? Why or why not?
7 in., 24 in., 25 in.
yes; 7 + 24 = 25
no; 72 + 242 ≠ 252
no; 7 + 24 ≠ 25
yes; 72 + 242 = 252
Answer:
Yes, 7^2+24^2=25^2
Step-by-step explanation:
If a right triangle then:
is 7^2+24^2=25^2
rewritten: 49+576=625 then yes
Zac has a fair coin and a six-sided number cube with a number, 1 through 6, on each side. He flips the coin and rolls the number cube. What is the probability that the coin shows tails, and the number cube is more than 2?
Answer:
1/3
Step-by-step explanation:
1/2 * 4/6 = 1/2 * 2/3 = 1/3
thank, 5 star, and brainliest if helpful!
Mr. Suarez orders a cube of clay for his art class. The height of the cube is 12 inches. Write and simplify an exponential expression to find how much clay Mr. Suarez ordered. show work
Answer:
1728 inches Total
Step-by-step explanation:
Cubes have the same height width and depth therefore the Question is 12 X 12 X 12, 12 X 12 = 144 X 12 = 1728.
Which is the correct answer choice?
Mike owns a candy shop.
Mike has 140.8 kg of candy.
He needs to put the candy into bags that each hold 0.8 kg.
How many bags will be filled?
Answer:
176
Step-by-step explanation:
140.8/0.8=176
Hope it helps
