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4 years ago

Which expression represents the sum of (2x-5y) and (x+y)?

Mathematics

1 answer:

lawyer [7]4 years ago

3 0

$(2x - 5y) + (x + y) \\ = 2x - 5y + x + y \\ = 3x - 4y$

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Find the slope of the line that passes through each pair of points

nataly862011 [7]

Use photo math they give a graph for each

5 0

3 years ago

Simplify by combining like terms 7x + 3 (2x-6) - 10 - 7x

ruslelena [56]

6x-28 is what I got for this

3 0

3 years ago

Read 2 more answers

Arielle has a collection of grasshoppers and crickets. She has 561 insects in all. The number of grasshoppers is twice the numbe

Daniel [21]

Answer:

Arielle has 374 grasshoppers and 187 crickets

Step-by-step explanation:

Let's set:

x = number of grasshoppers

y = number of crickets

Arielle has a collection of 561 insects, thus:

x + y = 561 [1]

The number of grasshoppers is twice the number of crickets, thus:

x = 2y [2]

Substituting [2] in [1]:

2y + y = 561

Simplifying:

3y = 561

Dividing by 3:

y = 561/3

y = 187

From [2]:

x = 2*187 = 374

x = 374

Arielle has 374 grasshoppers and 187 crickets

7 0

3 years ago

Determine the slope of a

AysviL [449]

Answer:

m = 3/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2-y_1}{x_2-x_1}$
Perpendicular lines are the negative reciprocal of the given line

Step-by-step explanation:

Step 1: Define

Identify

Point G(-2, 3)

Point H(1, -2)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Line GH

Substitute in points [Slope Formula]: $\displaystyle m = \frac{-2-3}{1--2}$
[Fraction] Subtract: $\displaystyle m = \frac{-5}{3}$

Perpendicular line

Negative: $\displaystyle m = \frac{5}{3}$
Reciprocate: $\displaystyle m = \frac{3}{5}$

4 0

3 years ago

Math 6. Grade 6.

AlexFokin [52]

R - 5 1/6 = 10

r - 31/6 = 10
+ 31/6 +31/6

r = 91/6

So, r = 91/6.

And, I am not sure if the second one I am doing in right or wrong, but I am just guessing.
I think you use substitution method here.

8(x-2)+9 = 14
8x-16+9 = 14
8x-7 = 14
+7 +7
8x = 21
x = 21/8

So, the answer is 21/8

HOPE THID HELPS AND I REALLY HOPE THAT THE SECOND ANSWER IS RIGHT!!!!!!

3 0

3 years ago