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
Sveta_85 [38]
3 years ago
5

What is the value of 1+(-7)-(-2.5)?​

Mathematics
1 answer:
adell [148]3 years ago
4 0
Step 1: remove parentheses
1-7+2.5
step 2:simplify 1-7 to -6
-6+2.5
step 3 :simplify
-3.5
the answer is -3.5
You might be interested in
5x is equal to 8X raise to power - 1/3​
goldenfox [79]

Answer:

No solutions.

Step-by-step explanation:

5x = 8x^-1/3

Divide 8 into both sides.

5/8x = x^-1/3

Divide both sides by x.

5/8 = x^-4/3

Multiply both sides by the exponent -3/4.

5/8^-3/4 = x

1.422624 = x

Plug in 1.422624 for x to check.

It does not work. There are no real solutions.

7 0
3 years ago
Find the equation of the line.
ki77a [65]

Hello,

2 points of the line: (2,0) and (0,3)

\Delta\ y=3-0=3\\\Delta\ x=0-2=-2\\\dfrac{\Delta\ y}{\Delta\ x} =\dfrac{-3}{2} \\\\y-0=\dfrac{-3}{2}*(x-2)\\\\\boxed{y=-\dfrac{3x}{2}+3}\\

3 0
3 years ago
Help me plss need help with theses three
fiasKO [112]
interior angle of a regular 18-gon.
It is easier to calculate the exterior angle of a regular polygon of n-sides (n-gon) by the relation
exterior angle = 360/n
For a 18-gon, n=18, so exterior angle = 360/18=20 °
The value of each interior angle is therefore the supplement, or
Interior angle = 180-20=160 degrees.

Naming of a 9-gon
A polygon with 9 vertices is called a nonagon (in English) or enneagon (French ennéagone, but the English version is sometimes used)
You had a good start with the correct answer.

Exterior angle of a 15-gon
The exterior angle of a 15-gon can be calculated using the relation given in the first paragraph, namely
Exterior angle = 360/15=24 degrees
4 0
3 years ago
Translate into a variable expression.<br> fifteen more than one-half of the square of z
stellarik [79]

Answer:

15 +(1/2)X z²

this is your expression plz brainlist me and follow me

5 0
3 years ago
I'm really bad at math so I need some help explaining.
sergiy2304 [10]
Please let me know if there’s something you don’t understand. Hope this helps!

3 0
2 years ago
Other questions:
  • 5.
    10·1 answer
  • Y=-5x+3 in standard form
    15·1 answer
  • How would I set up the problem "Two trains Leave a stations at 10:00am heading in opposite directions. One train is going 80mph
    15·1 answer
  • Evaluate F(x)=-4x+7 when x is 1
    10·1 answer
  • Write an equation in slope intercept form that passes through the point (3,9) and has a slope of -5
    15·1 answer
  • 5 lbs 4 oz - 12 oz =?​
    14·1 answer
  • Drag each label to the correct location on the table. Each label can be used more than once. Match the attributes to the quadrat
    7·1 answer
  • If (p+2q)/p = 7/5 , find the value of q/p , where p ≠ 0​
    9·2 answers
  • Aaron ran 2 1/4 miles in 20 minutes. Based on this , how fast is he running one mile ?
    5·1 answer
  • If a baseball card appreciates exponentially in value by 50% over 10 years, what is its annual appreciation (growth) rate? Pleas
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!