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Leni [432]
3 years ago
14

How do I do This math....-2.5-(-3.25)=

Mathematics
1 answer:
zhannawk [14.2K]3 years ago
3 0

When you subtract a negative, it changes it to adding a positive.

= -2.5 - (-3.25)

= -2.5 + 3.25

= 0.75

Hope This Helped! Good Luck!

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Suppose the length of each side of a
Ilya [14]

Answer:

The original side length of the square was 9 ft

Step-by-step explanation:

Consider that the square was initially of side length "x" (our unknown). Then the sides were all increased by 5 ft, and now the perimeter (addition of all four sides) of the square render 56 ft.

Let's write an equation that represents the addition of the four sides of this new rectangle, and set it equal to 56 ft. Then solve for the unknown "x":

(x+5)+(x+5)+(x+5)+(x+5)=56\\x+x+x+x+5+5+5+5=56\\4x+20=56\\4x=56-20\\4x=36\\x=9

Therefore, the original side of the square was 9 ft.

3 0
3 years ago
Read 2 more answers
A jar of olive oil is priced $10.08 for 8 ounces. What is the cost per ounce? If Jan wants to buy 5 jars, how much will she spen
Amanda [17]

Answer:

$1.26 per ounce

5 jars=$50.40

Step-by-step explanation:

$10.08/8 ounces=$1.26 per ounce

$10.08/jar x 5 jars=$50.40

3 0
3 years ago
What value of n solves the equation 3^n=1/81 ? = <br> A. –243 <br> B. –27 <br> C. –4 <br> D. 4
meriva
The solution is n=-4.
8 0
3 years ago
Answer please cuz I'm very confused
Anestetic [448]

5x + 3y = - 53

the equation of a line in ' slope- intercept form ' is y = mx + c

where m is the slope and c the y-intercept

rearrange 3x - 5y = - 15 into this form to obtain m → (subtract 3x from both sides)

- 5y = - 3x - 15 → divide all terms by - 5 )

y = \frac{3}{5} x + 3 → in slope-intercept form with m = \frac{3}{5}

given a line with slope m then the slope m₁ of a line perpendicular to it is

m₁ = - \frac{1}{m} = - 1 ÷ \frac{3}{5} = - \frac{5}{3}

partial equation is y = - \frac{5}{3} x + c

to find c substitute ( - 7, - 6) into the partial equation

- 6 = \frac{35}{3} + c ⇒ c = - 6 - \frac{35}{3} = - \frac{53}{3}

y = - \frac{5}{3} x - \frac{53}{3} → in slope intercept form

multiply all terms by 3

3y = - 5x - 53 → ( add 5x to both sides )

5x + 3y = - 53 → in standard form





6 0
3 years ago
Lina is making trail mix for hiking trip she has2 1/2 cups of peanuts, 3 1/4 of raisins and 2 2/3 cups of banana chips how many
Zanzabum

8 5/12 because you have to get the 3 fractions denomenators to be the same. so 3, 4 and 2 all go into 12 then you need go multiply the top by the same number as the bottom

8 0
3 years ago
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