Answer:
B
Step-by-step explanation:
A mine worker is in a tunnel 25 feet below the ground. He descends another 13 feet. What is his final position? i already know that part of the answer is -25 -
but is it -25 - 13 or -25 - -13
Answer: -25 - 13
This simplifies to -38
So the worker's final position is 38 feet below the ground.
A diagram is shown below.
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Explanation:
Draw a vertical number line. Plot 0 on it to indicate the ground level, or surface level. Then plot -25 on it, which is below 0. This is 25 feet below the ground.
To move 13 further feet downward, we will subtract 13 from -25. Subtracting a positive means we move downward.
For example, start at the 30th of a building. This is marked as +30 or just 30 on the vertical number line. Subtract off 13 to go down 13 floors and we have 30-13 = 17. So after going down 13 floors, we're at the 17th floor now.
Going back to the problem at hand, we start at -25 and subtract off 13 to get the final answer -25 - 13
The answer is not -25 - -13 and it is not -25 - (-13). This is because the two negatives cancel to be a positive. So -25 - (-13) becomes -25+13. Here we're starting at -25 but then going up 13 feet. Instead we want to go down 13 feet.
------------------------------------
After we determine the expression is -25 - 13 we will effectively add the positive versions of those numbers like so
25+13 = 38
But the final answer is negative because we're starting underground and moving further underground.
We can write it like this
-25 - 13 = -(25+13) = -(38) = -38
Therefore, if the worker starts off 25 feet underground, and moves 13 feet downward, then the worker ends up 38 feet underground. Again, use the vertical number line to help see this.
Check out the diagram below.
Consider a cube that measures 1 inch on each side. We can think of a cubic foot as a dilation of the cubic inch by a factor of 12. What is the volume, in cubic inches, of a cubic foot? *
The volume of the cube is 1 cubic foot.
Volume of cube:Given that, each side of cube is 1 inch.
When dilation of the cubic inch by a factor of 12. Then each side of cube became 12 inches.
As we know that,
[tex]12inch=1 foot[/tex]
So that, each side of cube become 1 foot.
Volume of cube [tex]=(side)^{3}[/tex]
[tex]Volume=1^{3}=1ft^{3}[/tex]
Learn more about the volume of cube here :
https://brainly.com/question/1972490
Answer:
its 1728
Step-by-step explanation:
complete the equation of the line through (-8,-2) and (-4,6). use exact numbers. We need to find out what y=?
Answer:y = 2x + 14
Step-by-step explanation:
First, you have to find the slope by using
In other words,
The slope is 2.
Then you plug the rest into point-slope form (you can use either of the points, I used the first one)
Remember that m is the slope.
Distribute the slope to the par
Step-by-step explanation: first you do this then that then this then that then this
Evaluate - 3x + 2y when x = 2 and y = 3
Answer:
the answer is 0
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
-3x + 2y
-3(2) + 2(3) ## Substitution
-6 + 6 ## Distributive
0 ## Addition
Your doctor told you to eat 25 25 grams of fiber each day. You had 4 4 grams of fiber for breakfast. What percent of the 25 25 grams of fiber have you eaten so far?
Answer: 16%
Step-by-step explanation:
Grams of fiber recommended by doctor = 25 grams
Grams of fiber had for breakfast = 4
Percentage of gram ate = Grams had for breakfast / Grams recommended by doctor × 100
= 4/25 × 100
= 4 × 4
= 16%
Answer: 16%
Step-by-step explanation:
find the linear relationships
Answer:
everytime the x goes up by 3, the y goes down by 3
Step-by-step explanation:
-7n=35
what does n equal and show your steps and ur solution plz thx
reply or answer asap
Answer:
n = - 5
Step-by-step explanation:
The expression is given as ;
-7n = 35
Divide both sides by -7
-7n/-7 = 35/-7
n= -5
The value of n is -5
Find the Circumference of the circle.
30 points for whoever answers this
Answer:
87.92
Step-by-step explanation:
(2)(3.14)=6.28
(6.28)(14)=87.92
2(pi)(r)
I'm confused on this, so please help for 10 points.
Answer:
third one
Step-by-step explanation:
Answer: it would be the third option, (2/5)^4
Step-by-step explanation:
sure thing! so, when all of those fractions in parenthesis, it means they are all going to be multiplied. and, this gets easy! that third option means that all of them are getting multiplied 4 times, which is exactly what the original problem means. hope this helps!
I am struggling with math right now this will help out a lot
Answer:
A car bought every 10 seconds? If that is even true
Step-by-step explanation:
Mike a local auto mechanic charges a certain amount to diagnose and repair car he bases his price on the amount of time that it takes for the car to be repaired what is the rate of change in the graph.
Answer:
200
Step-by-step explanation:
The time spent repairing the car is five hours while the total cost is about 200 bucks
There were 26 students in the classroom. 14 of the students went to the
cafeteria and the rest went to the gym. What percentage of students
went to the cafeteria?
Answer:
53.85%
Step-by-step explanation:
14 of the 26 went to the cafeteria
14/26
7/13
Change to decimal form
.538461538
Change to percent form from decimal form
53.85%
Answer:
54% went to the cafeteria
Step-by-step explanation:
14/26= 0.53846153846 or .54
.54*100= 54%
I hope this helps!!!
Which of these is the standard form of the following function?
f(x) = -9(x + 5)2 + 4
f(x) = 9x2 − 90x − 221
f(x) = -9x2 − 90x − 221
f(x) = 9x2 − 180x + 221
f(x) = -9x2 − 180x − 221
Answer:
the answer is B) -9x2 -90x -221
Clear x.
5x-5 one
———= ——-
X-2 3
Answer:
5x-5 = 5(x−1)
X-23 = =x−23
Step-by-step explanation: hope this help
3.(06.01)
What is the value of the expression 5^2 +2^2? (2 points)
Answer:
29
Step-by-step explanation:
5^2=25
2^2=4
25+4=29
Answer: 29 is the final answer
Step-by-step explanation: Have a nice day - Lily ^_^
DO THESE ON A PIECE OF PAPER! PLEASE HELP! QUICK!!DO ALL OF THEM!!!
Answer:
i cant sseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Step-by-step explanation:
the picture
Answer:
Step-by-step explanation:
It will be a little slanted so i am sorry.
A carpenter sands 1/2 of a dresser in 3/4 hour ,how long does it take the carpenter to sand 1 dresser
Answer:
1.5 hours = 1 hour 30 mins
Step-by-step explanation:
3/4 = 0.75
0.75 x 2 = 1.5
What is the solution to the system of equations?
y = x + 1
y = x - 1
Answer:
No solution I believe
Step-by-step explanation:
Please answer this really fast!
Can you please create me an Order of Operations equations with numbers 5,12,5,11,9. And please give me the answers as well! dont forget to use numbers 5,12,5,11,9. for the equation
THANKS SO MUCH!
Step-by-step answer:
5(12×11)-(5^5)+9
5(12×11)-3,125+9
5(144)-3,125+9
720-3,125+9
-2,405+9
-2,396
Plzzzzz give me Brainliest!!!!!
which is the best estimate for the mass of a desktop computer
a 500 g
b 10 l
c 10 kg
d 100 g
How do I do this please help
Answer:
A
Step-by-step explanation:
is the answer Aaaaaaaaa
this is the question
Answer:(1,1)
Step-by-step explanation:
Its asking where both linear and curve lines are being hit,
(fxg)(0)= 1,1
Anyone know the correct answer?!
Answer: Lower-right corner [tex]3^7 \times \frac{1}{3^4}[/tex]
Explanation:
We use the rule that
[tex]a^{-b} = \frac{1}{a^b}[/tex]
The negative exponent tells us to apply the reciprocal if we want the exponent to be positive.
In this case, a = 3 and b = 4
So,
[tex]a^{-b} = \frac{1}{a^b}\\\\3^{-4} = \frac{1}{3^4}[/tex]
which is why overall,
[tex]3^7\times 3^{-4} = 3^7 \times \frac{1}{3^4}[/tex]
Which expressions are equal to 4y + 8 + 4y + 8?
Answer:
8y + 16
Step-by-step explanation:
Put the like variables together
bro 8.1 • 10-8 is greater than 9.2
Answer:
Your statement is true
Step-by-step explanation:
:|
What is the answer to this question?
Answer:
Step-by-step explanation:
X=-6
Step-by-step explanation:
x= -6
......................
10. If y = -2x + 3, find y when x = -3.
a) 12
b) -2
Answer:
Step-by-step explanation:
y=-2x+3
y=(-2*-3)+3
y=6+3
y=9
How do I find the rule of a linear table ?
Answer:
start by checking that it's a linear relationship that's occurring by having a look at the difference in our X in each step against the difference in our Y in each step.
Step-by-step explanation:
Find the ratio (red to blue) of the perimeters of the similar triangles. Write your answer in simplest form.
Answer:
I think the answer is 9/2
Name the triangle.
please help
Answer:
c. right =90 that's the as