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3 years ago

What is an expression equivalent to 4b + 5y - 3b + 8y

Mathematics

1 answer:

Advocard [28]3 years ago

5 0

Answer:

b + 13y

Step-by-step explanation:

4b + 5y - 3b + 8y = 4b - 3b + 5y + 8y

I rearranged the like terms together.

4b - 3b + 5y + 8y = b + 13y

Simplify.

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The number of windows on each floor form an arithmetic sequence; 124 windows on the first floor, 116 windows on the second floor

zubka84 [21]

Answer:

Formula is 132 - 8n, and there are 52 windows on 10th floor.

Step-by-step explanation:

difference = 116-124 = -8 ( 8 less windows for every floor you go up)

the first fllor has 124 windows

Formula:

$a_{1} = 124$

$a_{n} = 124 + (-8)(n - 1)$ = 132 - 8n

10th Floor:

$a_{10} = 124 + (-8)(10 - 1) = 124 + (-8)(9) = 124 - 72 = 52 windows$

6 0

3 years ago

What is (x - 3)2 + 2x - 4 for x=5 ?

yuradex [85]

Answer:

$(x - 3)2 + 2x - 4 \\ (5 - 3)2 + 2 \times 5 - 4 \\ (2) \times 2 + 10 - 4 \\ 4 + 10 - 4 \\ 14 - 4 = 10$

7 0

3 years ago

3. An aspirin tablet weights 0.5 grams. How many ounces does it weigh?

maksim [4K]

3. An aspirin weighs 0.018 ounces.
1 gram = 0.035 ounces

4. An aspirin is 500 milligrams.
1,000 milligrams = 1 gram

7 0

3 years ago

If two points on line l above have coordinates (0, A) and (2, −3), and the slope of the line is A, then what is the value of A?

Vlada [557]

Answer:

A = -1

So, option (B) is the correct answer.

Step-by-step explanation:

The two points on line have coordinates: p (x₁, y₁) = (0, A) and q(x₂, y₂) = (2 , -3)

Slope of line = A

Slope of line = $\frac{y_{2} - y_{1}}{x_{2} -x_{1}}$

Now since the slope of line is A and its has two coordinates (0, A) and (2 , -3), ∴

$A = \frac{y_{2} - y_{1}}{x_{2} -x_{1}}$

$A = \frac{-3 - A}{2 - 0}$

$2A = -3 - A$

$2A + A = -3$

$3A = -3$

$A = -1$

So, option (B) is the correct answer.

6 0

3 years ago

Translate the sentence into an algebraic equation. Use x for the variable.

DENIUS [597]

7•x=x-15
I think this would work, if I understood what you were saying correctly.

8 0

3 years ago