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
larisa86 [58]
3 years ago
9

Find two numbers, if … b Their sum is −7 and their difference is 14

Mathematics
1 answer:
Delicious77 [7]3 years ago
4 0

Answer:

x=0

y=-21/7

Step-by-step explanation:

Let the two unknown be x and y

x+y=-7...(1)

x-y=14...(2)

From (1) make x the subject of formula

x=-7-y...(3)

Substitute (3) into (2)

-7-y-y=14

-7-2y=14

Add 7 to both sides

-2y=21

Add both sides by-2

y=-21/2

Substitute the value of y into (3)

x=-7-(-21/2)

x=-7+21/3

Lcm

x=-21+21/3

x=0/3

x=0

You might be interested in
Can some help me if your good at maths
Annette [7]

Answer:

36=2×3×3×3

<h2>36=2×3³</h2>
4 0
3 years ago
Read 2 more answers
Answer number one asap this is not a joke so please not random cmts thx will report if u do!
STALIN [3.7K]
1. The area of one face of the bar is
.. face area = (50 mm)*(90 mm) = 4500 mm^2
The area of two sides of the bar is
.. side area = (50 mm +90 mm)*(3.5 mm) = 490 mm^2

Together, those areas cover half the bar, so the total paper required is
.. 2*(4500 mm^2 +490 mm^2) = 9980 mm^2 . . . . . . 3rd selection

2. The length of the central rectangle is
.. 8 ft + 6 ft + 10 ft = 24 ft
Its width is 7 ft, so its area is
.. Arect = (7 ft)*(24 ft) = 168 ft^2

Each of the two triangles has a base of 8 ft and a height of 6 ft, so together, they have an area of
.. Atriangles = (8 ft)*(6 ft) = 48 ft^2

Then the total area of the prism is
.. Atotal = Arect +Atriangles
.. = (168 ft^2) +(48 ft^2)
.. = 216 ft^2
8 0
3 years ago
In this equation, y-4/2=10, would i need to get the same denominator<br> y-4/2=10/2 = y-2=5?
Natasha_Volkova [10]
No actually you can just multiply both sides of the equation by 2 and get y-4=20. then add 4 to both sides to get y=24.
3 0
3 years ago
A student rolls a standard number cube. What is the probability the student rolled a 4. given that the number rolled was
Debora [2.8K]

Answer:

A

Step-by-step explanation:

Because on a dice there are only 6 sides meaning there is a 1/6 chance of you to role a 4

3 0
3 years ago
What is the answer to negative 1/4-16 1/5 divided by 6???
Luba_88 [7]

For that last part you can leave your answer as a fraction of -59/20 or you can divide 29 by -59 and you’ll get -2.95.

4 0
3 years ago
Other questions:
  • What is the mean for this list of numbers? 13, 26, 33, 45
    12·2 answers
  • How do you write 0.555... as a fraction
    14·2 answers
  • the angle of elevation from the top of one building to another is 26 degrees. if the shorter building is 400 feet tall and the b
    15·1 answer
  • Can anyone help me with this please ?
    10·1 answer
  • A=pir^2 solve for pi
    8·1 answer
  • In Aunt Melly's attics there are also spiders and ants, the total of 136 legs and 20 heads. If a spider has 8 legs and an ant ha
    10·1 answer
  • When you have to convert 0.25 = to 5ft on a scale
    6·1 answer
  • The scale factor of the volume of two cubes is 8 to 27. What is the scale factor of the sides of the cubes?
    8·1 answer
  • Help me please as soon as possible
    15·2 answers
  • Alda's allowance follows the equation
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!