Answer:
30 - 3t ≤ 20
Step-by-step explanation:
Given that :
Pool is open when high temperature is higher than 20°C
From 30°C ; temperature decreased at a constant rate in the next three days ; that is the daily fall in temperature for 3 days is the same.
Let the fall or decrease in temperature = t
Constant decrease for 3 days = 3t
Change in temperature over 3 days :
Initial temperature - constant decrease
30°C - 3t
Hence, inequality to determine rate of temperature decrease :
30 - 3t ≤ 20
3х – 2
= 2х – 8
4
I don’t know how to do this
Answer:
x=17.2
Step-by-step explanation:
here a picture of how i did it cause its hard to expialn
Which ordered pair is a solution of the equation y=-3x+1?
A. (-4,-31)
B.(10,-26)
C.(2,-5)
What to use? Pick two points from the table and
use the slope formula to find the slope.
Example: The table below has a constant rate of
change. Find the slope.
Х
Y
- 1
4
0
6
1
8
2
10
3
12.
4.
14
Answer:
The slope is 1/2
Step-by-step explanation:
AS seen in the graph I provided you can see that the points are increasing by 1/2
3x+1 = 5x-9. what is the value of x?
Answer:
X equals 5
Step-by-step explanation:
3x+1=5x-9
3(5)+1=5(5)-9
15+1=25-9
16=16
Newton has 10 more dimes than nickels. He has
twice the number of quarters than nickels. If he
has $6.20, how many of each coin does he have?
Given:
Newton has 10 more dimes than nickels.
He has twice the number of quarters than nickels.
Total amount he has = $6.20.
To find:
The number of each coin.
Solution:
Let the number of nickels be x.
Newton has 10 more dimes than nickels.
Dimes = x+10
He has twice the number of quarters than nickels.
Quarters = 2x
We know that, 1 nickel = $0.05, 1 dime = $0.10 and 1 quarter = $0.25.
Total amount he has is $6.20.
[tex]x\times 0.05+(x+10)\times 0.10+2x\times 0.25=6.20[/tex]
[tex]0.05x+0.10x+1+0.50x=6.20[/tex]
[tex]0.65x=6.20-1[/tex]
[tex]0.65x=5.20[/tex]
Divide both sides by 0.65.
[tex]x=\dfrac{5.20}{0.65}[/tex]
[tex]x=8[/tex]
Now,
Number of nickels = 8
Number of dimes = 8 + 10 = 18
Number of quarters = 2(8) = 16
Therefore, the number of nickels, dimes and quarters are 8, 18 and 16 respectively.
Help me pleasee............
Answer: 30
Step-by-step explanation:
100-70=30
POSSIBLE POINTS 6
Jamal has a plan to save money for a trip Today, Jamal deposits $10.00 into the savings account Each week, Jamal will add $5.00 to the amount that
is deposited into the savings account. The table below shows the relationship between the number of weeks and how much money, in dollars, Jamal
deposits into the savings account
Week
0 1 2. 3 4
Deposit (dollars) 10 15 20 25 30
Let f ()represent the amount of money Jamal deposits into his savings account at the end of 2 weeks. Based on the table, what is f(10)
A
0
С
50
B
10
D 60
Answer:
D 60
Step-by-step explanation:
f(5)=35
f(6)=40
f(7)=45
f(8)=50
f(9)=55
f(10)=60
Answer:
d 60
Step-by-step explanation:
The result of adding 1 to 5 times a number is 31. Find the number
Answer:
5 times 6 plus 1 is equal to 31. so the answer is 6
Step-by-step explanation:
5*x+1=31
31-1=30
30/5=6
Answer: 6
Step-by-step explanation: The equation is 5x+1=30
-1 -1
5x=30
X=6
Find the y intercept of 12x-6y=36. No ordered pair. Numeric value only. pls help!!
Answer:
The y-intercept is (0,-6), but the way they want it written the answer is y intercept= -6
Step-by-step explanation:
You have at most $3.65 to make copies for a school project. Each copy costs $0.25. Write and solve an inequality that represents the number of copies you can make.
The equation for the problem is [tex]0.25x[/tex] ≤ [tex]3.65[/tex]
Hope it helps!
You can make the maximum number of copies would be 14.6 which is determined by the inequality 0.25x ≤ 3.65 where x represents the number of copies.
What is inequality?Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.
You have at most $3.65 to make copies for a school project. Each copy costs $0.25 which is given in the question.
As per the given condition, the required inequality would be:
⇒ 0.25x ≤ 3.65
Here x represents the number of copies
⇒ 0.25x ≤ 3.65
Divided by 0.25 both sides of the inequality, and we get
⇒ x ≤ 3.65/0.25
⇒ x ≤ 14.6
Therefore, you can make the maximum number of copies would be 14.6.
Learn more about inequalities here:
brainly.com/question/20383699
#SPJ2
1.2.8 -0.9+y
Your answer
Triangle ABC has the following angle measures; The measure of angle B is 38, the measure of angle C is 56, what is the angle measure for angle A?
How do I round up this number 86,088
Answer:
86,000
Step-by-step explanation:
You look at the 88 and 88 would round up to one, but since 1 is less than four the number becomes 86,000
Find x: 2(4x − 3) − 8 = 4 + 2x
Solve the inequality 5x + 3 > 48
Answer:
Step-by-step explanation:
5x + 3 > 48
5x > 48 - 3
5x > 45
x > 45/ 5
x > 9
Answer:
x = 9
Step-by-step explanation:
5x + 3 > 48
Subtract 3 to both sides
5x > 45
Divide by 5 to both sides
x = 9
To check if the answer is correct, you can always plug in 9 instead of x and solve the equation.
Hope this helps and pls do mark me brainliest if you can:)
An item is regularly priced at $40. It is on sale for 20% off the regular price. How much (in dollars) is discounted from the regular price?
Answer:
5$ is discounted from the regular price.
what is wrong with the equation?
Answer:
I think X=3
Step-by-step explanation:
When adding fractions you have to find a common denominator, the easiest way is to use the other number for it. So with [tex]\frac{x}{2}[/tex] you would multiply the top and bottom by 6, and with [tex]\frac{x}{6}[/tex] you would multiply both the top and bottom by 2. You should then have [tex]\frac{6x}{12}[/tex]+[tex]\frac{2x}{12}[/tex]. You add the tops together which will leave you with 8x and the bottom stays the same. Then you multiply the the 2 by the 12, and when doing this the 12 will cancel out. leaving you with 8x= 24. Finally you divide 24 by 8 and X is 3.
7x= 5 + y write the standard form of the equation
Answer:
7 * x = 5 + y
Step-by-step explanation:
hope this helps!, you can correct me if I'm wrong.
what is the area of a trapezoid with side lengths of 13,13,20,30 and a height of 12 cm
Answer:
Area = [tex]156cm^{2}[/tex]
Step-by-step explanation:
A=a+b
2h=13+13
2·12=156cm²
I hope this helps you :)
if it took 2 hours to clean 4 houses how many houses could be cleaned in 3 hours
Answer:
6
Step-by-step explanation:
it would be six in one hour he would clean 2 houses in two 4 houses then in three it would be six
Answer:
I think you can clean 6 houses.
6. What is the equation in point-slope form of the line that passes through the points (-2, 18) and
(1, -3)?
A. y +3 = -7(x - 1)
B. y -3 = -7(x + 1)
C. y+3 = 7(x + 1)
D. y - 3 = 7(x - 1)
PLEASE HURRY ITS A TIMED TEST!!!!!
Answer:
B) y-3= -7(x+1)
Step-by-step explanation:
Find the lowest common multiple of 15 and 12
Answer:
its 60
Step-by-step explanation:
Nitrogen and oxygen are the most abundant gases in Earth’s atmosphere. A nitrogen molecule is 0.00000000003 meters larger than an oxygen molecule.
Which statements describe writing 0.00000000003 in scientific notation? Check all that apply.
Answer:
3 x 10 to the 11th
Step-by-step explanation:
move the decimal to the right, keeping it positive, 11 times to make it 0.3
Answer:
The exponent represents the number of places the decimal moves.
The decimal moves to the right.
The exponent is negative.
Step-by-step explanation:
Solve the system x+2z=30 y+z=12 z=1
Answer:
x=28 y=11 z=1
Step-by-step explanation:
plug in 1 for z in x+2z=30 to get x+2(1)=30. Then you should get x+2=30 which is x=28.
Then, plug 1 in for the second equation of y+z=12 so you get y+1=12. Then you should get y=11.
-7 1/3 > -11 1/4
true or false?!?
PLZ HELP! Oliver is 8 feet above the surface of the water. There is a school of fish 10 feet below the surface. A ledge with some seashells is 18 feet below the surface, and even deeper, there is a shipwreck 32 feet below the surface. Answer parts a and b.
a. How many feet will Oliver have to travel to get to the seashells?
Oliver will have to travel ? feet down
Answer:
26 feet, Oliver will have to travel 26 feet deep.
Step-by-step explanation:
8 feet added to 18 feet will be your answer.
Answer:26 feet, Oliver will have to travel 26 feet deep.
Step-by-step explanation:Okay so if you draw a line graph going vertical and you number it 1-32 ( this is if you have to show work ) a is a 11 feet deeper and b is 23 feet deeper
Diana usually drives at average rate of 30 mph.
If Diana drives with the average rate x mph, how long would it take her to get to Tony's house?
Answer:
12/x hours
Step-by-step explanation:
d=12
s*t=d
t=d/s
t=12/s
Hope this helps pls if it help u mark me BRAINLIST pls thank u.
Answer:
12
Step-by-step explanation:
no
Classify the following polynomial: 3x² + 7x - 5
Answer:
trinomial
Step-by-step explanation:
Since this polynomial has 3 different terms, this is, in fact, a trinomial.
Hope this helps :)
Given quadrilateral DEFG is an isosceles trapezoid. Find DE.
D
4x - 2
E
2x + 5
3x + 2
G
5x - 3
Answer:
n n n n n n n n n
Step-by-step explanation:
b b b b b b b b b b b b b b b b b
The sum of two numbers is 48. If the second number is 6 less than the first, what
is the value of EACH of the numbers?
Answer:
let the first no. be x
then the second no. = x - 6
their sum is 48
therefore,
[tex] = > x + (x - 6) = 48 \\ = > 2x = 48 + 6 \\ = > 2x = 54 \\ = > x = \frac{54}{2} \\ = > x = 27[/tex]
The value of first no. = x = 27
The value of second no. = x - 6 = 27 - 6
= 21