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
Pachacha [2.7K]
3 years ago
6

I am doing some algebra homework and we are solving equations by expanding brackets. I was going along fine with the positive nu

mbers however I am a bit stuck on these negative ones...
-(6-7)=2
-10(s+1)=-87

Appreciate it if you can help me solve these!
Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
8 0
-10(s + 1) = -87 

The same way you do positive numbers, you do negative number. Multiply whatever is in the parenthesis by what's on the outside, which in this case is -10. So: 

-10*s + -10*1 = -87 
-10s + -10 = -87

To solve, first add -10 to both sides

-10s = -77 

next, divide both sides by -10

s = 7.7 

To check the answer, plug the solution into the original equation
-10(s+1) = -87
-10(7.7 + 1) = -87
-10(8.7) = -87
-87 = -87 

(for the first one, is there a variable involved?)
erica [24]3 years ago
5 0
The first one is incomplete.

-10(s+1)=-87\\
-10s-10=-87\\
-10s=-77\\
s=7.7
You might be interested in
Florence has $400 in a savings account. The interest rate is 5% per year and is not
Sati [7]

Answer:

$20

Step-by-step explanation:

I = 400(.05)(1)

I = 20

3 0
3 years ago
On a treasure map, a X is placed at point (9, -7). if the pirates are currently on point (9,3), how many units away are they?​
Alex_Xolod [135]

Answer:

They are 10 units away from the treasure

Step-by-step explanation:

Notice that the points (9, -7) and (9, 3) are both located at the same x-value (9) while their y-values are in one case 3 units above the x-axis, and in the other 7 units BELOW the x-axis. Therefore thy differ by 3 - (-7) units , which totals 10 units.

8 0
3 years ago
Read 2 more answers
Describe ways you could look at two shapes and tell that one is not the image of the other under a rigid transformation
9966 [12]

Answer:

see below

Step-by-step explanation:

a rigid transformation preserves lengths and angles

if the shapes don't look the same or they are the same shape but smaller or bigger than the other one it's not a rigid transformation

if the corresponding angles are the same that works too

4 0
4 years ago
Find the greatest common factor of each set of numbers 24 40 and 56
Artemon [7]

To get the greatest common factor of a list of numbers, you can use a neat trick.

First, get the greatest common factor of the first two. Then, the greatest common factor of that and the third, and so on.

In this case, we need to get the greatest common factor of 24 and 40.

I'll use Euclid's algorithm (you can look that up in google, it's just a nice way to find the GCF of two numbers)

24, 40

40, 24

24, 16

16, 8

8, 0

So we get 8. Now we need to get the greatest common factor of 8 and 56:

8, 56

56, 8

8, 0

We get 8 again, and that is the greatest common factor of the three numbers.

Hope this helps :)

8 0
3 years ago
Suzy likes to mix and match her 3 necklaces, 2 bracelets, and 6 hats. The colors are listed in the table. On Monday, she randoml
Lisa [10]
<span>Answer: Option D. 1/12

We have:
3 Necklaces (red, green, and gold)
2 Bracelets (red and black)
6 hats (silver, yellow, green, gold, black, and white)

The number total of combinations is:
C=3x2x6→C=36 possible combinations

What is the probability of Suzy choosing a red bracelet and silver hat?
Possible combinations with a red bracelet and silver hat:
C1=1 (red bracelet) x 1 (silver hat) x 3 (necklaces: red, green, and gold)
C1=3 possible combinations with a red bracelet and silver hat

Probability of Suzy choosing a red bracelet and silver hat: P=C1/C
P=3/36

Simplifying the fraction dividing the numerator and the denominator by 3:
P=(3/3) / (36/3)
P=1/12

Answer: The probability of Suzy choosing a red bracelet and silver hat is 1/12</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • A circle has the equation 2x2+12x+2y2−16y−150=0.
    14·1 answer
  • Will make Brainliest/#HelpAsap #MathHelp #Math(2 questions)!
    9·1 answer
  • Which statement best compared the graphs
    13·1 answer
  • A container of oil has spilled on a concrete floor. The oil flow can be expressed with the function n(t) = 7t, where t represent
    11·1 answer
  • The width of a rectangular garden is 9 feet, and its length is 12 feet. Three of these expressions equal the perimeter of the ga
    13·1 answer
  • Is floor(x) periodic?
    8·2 answers
  • Urgent answer with steps
    7·1 answer
  • g Suppose, for simplicity, that three main parts of a laptop are CPU, RAM, and hard drive;so if one of theses components fails,
    15·1 answer
  • What is the maximum value of the function f(x) = -x2 + 4?
    5·1 answer
  • David Egil and frances share money in the ratio 2:7:9 Egil gets £85 more than David work out how much they each get ?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!