Answer:
11:15PM
Step-by-step explanation:
The difference between 4.6°C and -2.1°C is 6.7
0.75×?=6.7
?=9
This is 9 half hours, which is equal to 4 1/2 hours.
Hope it helped! Please give brainliest, thank me and rate it 5 please. :)
The time at which the temperature was -2.1°C is 5:05 PM
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
The temperature is changing at a constant rate of = -0.75° C every half hour
So ,
30 min = -0.75° C
Divide by 3 on both sides , we get
10 min = -0.25°C
So , temperature is changing at a constant rate of = -0.25° C every 10 minutes
Now , the temperature at 6:45 PM = -4.6°C
So ,
The temperature at 6:15 PM = -4.6 + 0.75
= -3.85°C
The temperature at 5:45 PM = -3.85 + 0.75
= -3.1°C
The temperature at 5:15 PM = -3.1 + 0.75
= -2.35°C
Now , for it to be -0.25°C , the time elapsed will be 10 minutes
So ,
The temperature at 5:05 PM = -2.35°C + 0.25°C
= -2.1°C
Hence , the time at which the temperature was -2.1°C is 5:05 PM
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I need halp with this-
Z=9
Answer:
81 + 81 + 10 aka 172
Step-by-step explanation:
Answer:
172
Step-by-step explanation:
z = 9
9 to the second power is 81
9 times 9 is 81
plus 10
= 172
hope this helps dude
Make b the subject of the formula a = Vb + 6
Answer:
b = (a - 6)/V
Step-by-step explanation:
a = Vb + 6
Subtract 6 from both sides:
a - 6 = Vb
b = (a - 6)/V
Identify an equation in point-slope form the line parallel to y=-2/3x+8 that passes through(4, -5).
A. y+5=-2/3(x-4)
B. y-5=-2/3(x+4)
C. y+5=3/2(x-4)
D. y-4=2/3(x+5)
Answer:
The equation of line in point slope form is: [tex]\mathbf{y+5=-\frac{2}{3} (x-4)}[/tex]
Option A is correct option.
Step-by-step explanation:
We need to identify an equation in point-slope form the line parallel to y=-2/3x+8 that passes through(4, -5).
The general equation of point slope form is: [tex]y-y_1=m(x-x_1)[/tex]
where m is slope of the equation.
Finding slope of the equation.
Since the two lines are parallel so, both lines have same slope.
Equation of given line: y=-2/3x + 8
This equation is in slope-intercept form, comparing with general equation [tex]y=mx+b[/tex] where m is slope , we get the value of m= -2/3
So, slope of given line = m = -2/3
Slope of required line = m =-2/3
Now, writing equation in point-slope form:
We are given point (4,-5) so, we have [tex]x_1=4, y_1=-5[/tex] and slope is: m=-2/3
So, equation of line in point-slope form is:
[tex]y-y_1=m(x-x_1)\\y-(-5)=-\frac{2}{3}(x-4)\\y+5=-\frac{2}{3}(x-4)[/tex]
So, the equation of line in point slope form is: [tex]\mathbf{y+5=-\frac{2}{3} (x-4)}[/tex]
Option A is correct option.
Answer:
The answer is A.
Step-by-step explanation:
Solve the inequality.
q - 12 ≥ -13
q ≥ 1
q ≥ -1
q ≥ 25
q ≥ -25
Answer:
[tex] - 12 \geqslant - 13 \\ \geqslant - 13 + 12 \\ \geqslant - 1 [/tex]
The required solution to the given inequality q - 12 ≥ -13 would be q ≥ -1. The correct answer would be an option (B).
What is inequality?Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.
The inequality is given in the question, as follows:
q - 12 ≥ -13
We have to determine the solution to the given inequality
As per the question, we have
⇒ q - 12 ≥ -13
Add 12 on both sides of the above inequality
⇒ q - 12 + 12 ≥ -13 + 12
⇒ q ≥ -1
Therefore, the required solution to the given inequality would be q ≥ -1.
Hence, the correct answer would be an option (B).
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A group of friends decided to share
4 chocolate bars. If each friend only
ate 2/3 of a chocolate bar, how many
friends shared the chocolate bars?
Answer:
6
Step-by-step explanation:
mark me brainliesst please
is y=4x-5 proportional or no proportional
Answer:
non proportional
Step-by-step explanation:
you're a customer with an everyday checking account. indicate which statement below is TRUE.
Answer:
The first choice
Step-by-step explanation:
I know this because I have one, but also, it says in the options to avoid monthly fee section.
Which of the following best describes the equation below?
y = -3x - 15
A.nonlinear
B. both linear and non linear
C.linear
D.neither linear or nonlinear
pls help
estimate 5/11 + 5/16 . use the benchmarks 0,1/2 and 1
a. 1/2
b. 1 1/2
c. 2
d. 1
pls help
Answer:
D
Step-by-step explanation:
5/11 and 5/16 = 80/176 + 55/176 which equals 135/176 which simplifies into 0.76 which is closest to 1
the slope of a line is -4/5 what is the rise if the run is 20?
Answer:
rise= -16
Step-by-step explanation:
Please see the attached picture for the full solution.
HURRY!!!!!!!!! THIS QUESTION IS 50PTS.
Option 1: $10.00 every day
Option 2: $3.00 on the first day, $3.50 on the second, $4.00 on the third, and so on, increasing by $0.50 per day
Option 3: $0.01 on the first day, $0.02 on the second, $0.04 on the third, and so on, doubling each day.
For option 1,2 and 3 Write a formula to find how much you would make on any day.
Here is a list of numbers:
-11, -5, 16, -19, 2, 10, 0, -11, -1
State the median.
Answer:
-1
Step-by-step explanation:
First, order the list of number from least to greatest:
-19 , -11 , -11 , - 5 , -1 , 0 , 2 , 10 , 16
Next, note the definition of a median. The median number is the number in the middle of a given set of numbers. In this case, it is -1.
-1 is your median.
~
Which answer choice shows 21.97 written in expanded form? A. 2 + 1 + 9 + 7 B. 20 + 1 + 0.9 + 0.7 C. 20 + 10 + 0.9 + 0.07 D. 20 + 1 + 0.9 + 0.07
Answer:
20 + 1 + 0.9 + 0.07
Step-by-step explanation:
Given the number 21.97 ;
To wite in expanded form:
Tens ___ Unit ____ tenth ____ hundredth
2_______ 1 _______ 9_________ 7
2 = 20
1 = 1
9 = 0.9
7 = 0.07
Hence,
20 + 1 + 0.9 + 0.07
when 832 is divided by n, the result is 16
Find the lcm using the prime fatorisation of 40 and 56
Answer:
LCM: 280
Step-by-step explanation:
;)
WILL GIVE BRAINLIEST
A new car cost $18,000.00. It is expected to depreciate at an average rate of 15% per year. Find the value of the car in 5 years. Show work.
Answer: $1.37
Step-by-step explanation:
[tex]c (t) = 18,000 (0.15)^{t}[/tex]
t = amount of years
[tex]c (5) = 18,000 (0.15)^{5}\\c (5) = 18,000 * 0.0000759375\\c (5) = 1.366875\\[/tex]
1.366875 ≈ 1.37
c (5) = 1.37
In 5 years, the value of the car should be approximately $1.37
Hope I helped!
Round the number 2.72603 to 2 decimal places.
Answer:
2.73
Step-by-step explanation:
You round 6 up to get 2.73
Please give brainliest and thank me if it helped
I need help finding Z
Answer:
the angle is 80° ,, for sure .
A. 4x(-1)=
B. 4x(-2)=
C. 4x(-3)=
Explain please
Compare using >,=, or <.
a. 3_ -3
C. -12_ -24
b. 12_24
d. 5__-(-5)
Answer:
a. 3 > -3
C. -12 > -24
b. 12< 24
d. 5 = -(-5)
Step-by-step explanation:
Help!!!!!!!!!!!!!!!!!!!!
Answer:
Step-by-step explanation:
It would be D I think...
30 POINTSSS HELPPP
A yellow marble, a green marble, a red marble, a blue marble and a brown marble are dropped into an empty jar in the order given. The process is repeated until there are 88 marbles in the jar. How many of the marbles are red?
A 15
B 16
C 17
D 18
E 20
Answer:
18
Step-by-step explanation:
Because 85 divided by 5 is 17 add 1 for the missing 3 boom 18.
Answer:
D) 18 marbles will be red
Step-by-step explanation:
We know that the order is Yellow, green, red, blue, brown due to it saying “in the order given”
We can say that every time 1 of each marble of these colors are dropped in we can make that a set and since and we know there are 5 marbles a set.
Now we know there are 88 marbles so we divide
88/5= 17 Remainder: 3
Now 17 sets so we know there are at least 17 of each marble In the jar
Now the remainder of 3
Following the order
1 would go into yello, 1 to green, and the last one to red
So thats an extra plus 1
Now we have
Yellow: 17+1=18
Green: 17+1=18
Red: 17+1=18
Blue: 17
Brown: 17
So there are 18 red marbles
CHECK:
We add all the final results and see if we get 88
18*3 (becuase there are 3, 18s)
18*3+17*2 (same for 17s, ther are 2 17s)
18*3=54
17*2=34
54+34=88
So its true
In △ABC, m∠A=23°, a=10, and b=13. Find c to the nearest tenth.
9514 1404 393
Answer:
c ∈ {3.4, 20.6}
Step-by-step explanation:
The law of cosines can be used to write a quadratic equation in c.
a^2 = b^2 + c^2 -2bc·cos(A)
10^2 = 13^2 + c^2 -2(13)c ·cos(23°)
c^2 -23.933c +69 = 0 . . . . . subtract 100 to put into standard form.
c = (-(-23.933) ±√((-23.933)^2 -4(1)(69)))/(2(1))
c ≈ 11.967 ± √74.199
c ≈ {3.4, 20.6}
_____
Additional comment
The given angle is opposite the shorter of the two given sides, so we expect two solutions. We could use the law of sines, but this works just as well and gives the two solutions directly, without having to find angle B.
Determine whether the given set is a function or not. Explain.
{(6,-1), (-4,2), (5,2), (4,6), (6,5)}
Answer: No.
Step-by-step explanation: A function means that for every x, there is only ONE y value. In this case, 6 can be either -1 or 5, which is more than one value.
Answer:
The given set is NOT a function
Step-by-step explanation:
A function is a given set of data in which no x values repeat, where y values may or may not repeat. Since this given set does have a x value that repeats, it is not a function!
Another one!
I don´t get how to solve it please explain
Answer:
B. 16.9
Step-by-step explanation:
Reverse Pythagoreans theorem C^2 - B^2 = A^2 so
7^2 - 5^2 = c^2 and it comes out to
49-25 = 24 the square root of that is 4.9 (rounded)
But we are lookign for the perimeter so
4.9 + 7 + 5 = 16.9
the two triangles shows the congruent ABC LMN. based on this information which of the following is a true statement
Answer:
It's D I think.... Line up B and C with M,N
PLEASE HELP ME I WILL MARK BRAINLIEST
Answer:
[tex]a_n = 1 + 5(n-1)[/tex]
$36
Step-by-step explanation:
I think the part that is confusing you is how to read the math syntax.
The part that says "[tex]a_n=1, if\ n=1[/tex]" just means that a=1 is your starting number. The n=1 is the first iteration.
The part that says "[tex]a_{n}=a_{n-1}+5\ , if\ n>1[/tex]" just means that you add 5 to the previous number every iteration.
They want you to find the number at 8th iteration, n=8. So lets work it out.
n=1: a= 1
n=2: a= 1+5 = 6
n=3: a= 6+5 = 11
n=4: a= 11+5 = 16
n=5: a= 16+5 = 21
n=6: a= 21+5 = 26
n=7: a=26+5 = 31
n=8: a= 31+5 = 36
Or you can use the shortcut:
You're always adding by 5 each time and starting with 1, so:
[tex]a_n = 1 + 5(n-1)[/tex]
where n=8 for the 8th round.
[tex]a_n = 1 + 5(8-1) = 36[/tex]
8 + 2/3(12b +15)
Who ever answers correctly I will mark brainliest
Answer:
Simplify: 8b+18
Step-by-step explanation:
Answer:
8b+15
Step-by-step explanation:
this is simplified
have a good day or night
Which number line represents the solution set for the inequality - 2x2 4? -10 -8 6 -4 -20 2 4 6 8 10 -10 -8 6 + -2 0 2 -4 6 + -10 -8 6 -4 -2 0 2 68 10 -10 -8 -6 -4 -2 0 6 810
Answer:
Option (2)
Step-by-step explanation:
Given inequality is,
[tex]-\frac{1}{2}x\geq 4[/tex]
⇒ [tex]\frac{1}{2}x\leq -4[/tex]
⇒ x ≤ -8
When we plot this inequality on a number line,
An arrow starting with a solid point from x = -8 and arrow directing towards negative numbers will represent the given inequality.
Option (2) will be the answer.
Answer:
[tex] - \frac{1}{2} x \geqslant 4 \\ - x \geqslant 2 \times 4 \\ - x \geqslant 8 \\ \boxed{\ x \leqslant - 8}[/tex]
x→{-∞,-8]
Number line :---
Arrow which represents solid sphere directed from (-8) moving towards left (-∞) will be the answer
2nd one is the right answer.Please help me with this homework
Answer:
linear
Step-by-step explanation:
if you have access to a graphing calculator then enter the equation and you can see it forms a line
if you have graph paper, create some coordinates, plot and connect them
example of some ordered pairs could be:
(0, 7)
(2, 6)
(-2, 8)