1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yanka [14]
3 years ago
5

3-10-(-15) Show and explain work

Mathematics
1 answer:
Genrish500 [490]3 years ago
3 0

Answer:

3-10-(15) equals 8.

Step-by-step explanation:

3-10 equals -7. Then -(-15) becomes a positive because two negatives make a positives producing +15 so it becomes -7+15 which finally becomes 8.

You might be interested in
Hi! Pls help me with this question:
zimovet [89]

Answer:

PR=8

ST=5

Step-by-step explanation:

2x=8

x=4

PR=2x=8

5z=2z+3

3z=3

z=1

ST=5z=5

8 0
3 years ago
Find the unit rate.<br> 1/3 kilograms : 2/3 foot.
Darya [45]

Answer:

0.5kg per foot

Step-by-step explanation:

1/3 : 2/3

1 : 2

1 kg is 2 feet

0.5 kg/foot

5 0
3 years ago
Read 2 more answers
A train traveled the first 200 miles of its trip at a speed of 50 mph and the next 130 miles at a speed of 65 mph. What was the
12345 [234]
55 miles per hour, to answer questions like these you need to calculate the time (T=D/R) for each individual portion of the trip, add the time together to get total time, and then divide the total distance by the total time in order to get the average velocity in mph.
4 0
3 years ago
The times for three swimmers are 101.85 seconds, 101.6 seconds, and 59.625 seconds. Which is the winning time? how many seconds
bija089 [108]

Hello there! the winning time is 59.625 seconds.

This is the person who completed the lowest amount of time, meaning they finished first. The others too longer so they finished later, meaning they didn't win.

I hope this was helpful and have a great day! :)

3 0
3 years ago
A candy box is made from a piece of cardboard that measures 23 by 13 inches. Squares of equal size will be cut out of each corne
wolverine [178]

Answer:

2.67 inches.

Step-by-step explanation:

Assuming that we represent the size of the squares with the letter y, such that after the squares are being cut from each corner, the rectangular length of the box that is formed can now be ( 23 - 2y), the width to be (13 - 2y) and the height be (x).

The formula for a rectangular box = L × B × W

= (23 -2y)(13-2y) (y)

= (299 - 46y - 26y + 4y²)y

= 299y - 72y² + 4y³

Now for the maximum volume:

dV/dy = 0

This implies that:

299y - 72y² + 4y³ = 299 - 144y + 12y² = 0

By using the quadratic formula; we have :

= \dfrac{-b \pm \sqrt{b^2 -4ac}}{2a}

where;

a = 12; b = -144 and c = 299

= \dfrac{-(-144) \pm \sqrt{(-144)^2 -4(12)(299)}}{2(12)}

= \dfrac{144 \pm \sqrt{20736 -14352}}{24}

= \dfrac{144 \pm \sqrt{6384}}{24}

= \dfrac{144 \pm79.90}{24}

= \dfrac{144 + 79.90}{24} \ \  OR  \ \   \dfrac{144 - 79.90}{24}

= 9.33 \ \  OR  \ \ 2.67

Since the width is 13 inches., it can't be possible for the size of the square to be cut to be 9.33

Thus, the size of the square to be cut out from each corner to obtain the maximum volume is 2.67 inches.

3 0
3 years ago
Other questions:
  • A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 54 marbles in it. At least how many g
    7·2 answers
  • A chess club has 500 members nut is losing 30 members each year. A computer club has 150 members and is gaining 20 members per y
    6·1 answer
  • 2-94. Multiple choice: which of the following numbers could not represent a probability? Write a sentence explaining why they co
    14·1 answer
  • Yolanda completed 14/25 of her math problem before her break and 1/5 of her math problems after break. What fraction of her math
    15·1 answer
  • You need to solve for x and y .
    7·1 answer
  • Which choice is equivalent to the product below when x&gt;0?
    14·1 answer
  • I need help asap :(​
    7·1 answer
  • PLEASE HELP ME <br> #1, please!!!
    15·1 answer
  • For part A and B, the options are positive and negative.
    13·2 answers
  • Which one if these sets of ordered pairs is not a function ? help please
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!