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Finger [1]
3 years ago
5

What is the answer to -2 1/4 + (-3 1/4) =

Mathematics
2 answers:
hram777 [196]3 years ago
5 0
So this is how you do it

Pepsi [2]3 years ago
4 0

−5 1/2

Eliminating a negative and changing our operation.

=−2 1/4−3 1/4

Rewriting our equation with parts separated

=−2−1/4−3−1/4

Solving the whole number parts

−2−3=−5

Solving the fraction parts

−1/4−1/4=−2/4

Reducing the fraction part, 2/4,

−2/4=−1/2

Combining the whole and fraction parts

−5−1/2=−5 1/2

Solution by Formulas

converting mixed numbers to fractions, our initial equation becomes,

−9/4+−134

Applying the fractions formula for addition,

=(−9×4)+(−13×4)4×4

=−36+−5216

=−8816

Simplifying -88/16, the answer is

=−512

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photoshop1234 [79]

Answer:

0.923

Step-by-step explanation:

There are 13 total marbles. (12 Purple Marbles + One Blue Marble)

The total events are 13 and the number of preferred events is 12.

\frac{12}{13}= 0.92307692307 ≈ 0.923

So there should be a 0.923 chance that a purple marble is picked.

3 0
3 years ago
Read 2 more answers
An architect is designing a building.each floor will be 12 feet tall.
Kamila [148]

Answer:

There are four students working on a project in math class. Miguel has completed 1/8 of the project, Gina has completed 13% of the project, Jatziry has completed 0.10 of the project, and Keva has completed 1/9 of the project. Make a list of the students in order from least to greatest by the amount of the project they have completed.

Step-by-step explanation:

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3 0
3 years ago
Geometry!!!!!!!!!!!!!!!!!!!!
svlad2 [7]

Answer:

The two triangles are related by Side-Side-Side (SSS), so the triangles can be proven congruent.

Step-by-step explanation:

There are no angles that can be shown to be congruent to one another, so this eliminates all answer choices with angles (SSA, SAS, ASA, AAA, AAS).

This leaves you with either the HL (Hypotenuse-Leg) Theorem or SSS (Side-Side-Side) Theorem. We could claim that the triangles can be proven congruent by HL, however, we aren't exactly sure as to whether or not the triangles have a right angle. There is no indicator, and in this case, we cannot assume so.

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8 0
3 years ago
The perimeter of a rectangular piece of plastic is 30 millimeters. The area is 54 square millimeters. What are the dimensions of
Delvig [45]

Answer:

6 mm and 9 mm are the dimensions of the piece of plastic.

Step-by-step explanation:

Keep in mind the formulas for the area and perimeter of a rectangle:

A = lw

P = 2 (l + w)

List the factors of 54:

1, 2, 3, 6, 9, 18, 27, 54

POSSIBLE DIMENSIONS of the piece of plastic:

1 mm and 54 mm:

Area - 54 mm^2

Perimeter - 110 mm

2 mm and 27 mm

Area - 54 mm^2

Perimeter - 58 mm

3 mm and 18 mm

Area - 54 mm^2

Perimeter - 42 mm

6 mm and 9 mm

Area - 54 mm^2

Perimeter - 30 mm

The rectangular piece of plastic with the dimensions 6mm and 9 mm corresponds with the area and perimeter of the piece of plastic mentioned. So these are the correct dimensions.

Hope this helps!

6 0
3 years ago
Find the selling price of a $7.50 agenda book with a 15% discount.
tatuchka [14]
The answer is $6.38 hope this helps
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3 years ago
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