Ask question

Ask question

All categories

3 years ago

13

Expression equivalent to -2.5(4x-3)

1 answer:

e-lub [12.9K]3 years ago

6 0

If you distribute, then you get -10x+7.5

Note how -2.5 times 4x = -10x and how -2.5 times -3 = 7.5

The idea is that you multiply the outer term (-2.5) by each term inside

You might be interested in

. The ratio of a circumference to diameter is

Goryan [66]

One of the most fundamental truths of (Euclidean) geometry is that the ratio of the circumference to the diameter of any circle is a constant, and that constant is called pi (denoted by π π). Let C be the (length of the) circumference of a circle, and let d be its diameter. Then, we must have: C d = π C d = π

5 0

2 years ago

Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

Julli [10]

Answer:

$(m + 2)^{2} - m^{2} - 12 = 4(m - 2)$

Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

Step 3: Collect similar terms

$m^{2} - m^{2} + 4m + 4 - 12\\4m - 8$

Step 4: Factor 4 out of the expression to prove that the expression is a multiple of 4.

$Therefore\\4m - 8 = 4(m - 2)\\Hence,\\(m+2)^{2} - m^{2} - 12 is a multiply of 4 because the expression is equal to 4(m-2)$

3 0

2 years ago

Please Help I Will Thank You And Give You 5 Stars

enyata [817]

Answer:

The first blank is m, the rest aren’t very clear

Step-by-step explanation:

6 0

2 years ago

Julia can read 30 pages in 1.5 hours.How many pages can she read per minute?

photoshop1234 [79]

1.5 hours=60+30=90 minutes

30 pages : 90 minutes = 0.3 pages/minute

4 0

3 years ago

What is the expression for "the difference between four times a number and three times that number"

Liono4ka [1.6K]

4x-3x
hope it helps:)

4 0

3 years ago

Read 2 more answers