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3 years ago

Why do you need distributive property

1 answer:

6 0

Because we have to evaluate was in the parenthesis and then solve it, then we need to remember to multiply first before going to the addition

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1. Simplify. 4(2a - 1) - 4 + 7a

daser333 [38]

Answer:

Step-by-step explanation:

Let's simplify step-by-step.

4(2a−1)−4+7a

Distribute:

=(4)(2a)+(4)(−1)+−4+7a

=8a+−4+−4+7a

Combine Like Terms:

=8a+−4+−4+7a

=(8a+7a)+(−4+−4)

=15a+−8

Answer:

=15a−8

hope i helped

-lvr

4 0

3 years ago

(the pic of a graph goes here and is part of the question)

Anna35 [415]

Ur lines are parallel...they never intersect...means there is no solution...
ur answer { } or empty set

6 0

3 years ago

Read 2 more answers

Sum and difference of 5+2.3

professor190 [17]

Answer:

sum: 7.3 difference:2.7

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial

GREYUIT [131]

Answer:

P(0) = 7,917

Step-by-step explanation:

The population of the community is given by the following formula:

$P(t) = P(0)(1+r)^{t}$

In which P(0) is the initial population and r is the growth rate.

The initial population P0 has doubled in 5 years.

This means that

$P(5) = 2P(0)$

Which lets us find r.

$P(t) = P(0)(1+r)^{t}$

$2P(0) = P(0)(1+r)^{5}$

$(1+r)^{5} = 2$

Applying the 5th root to both sides

$1+r = 1.1487$

$r = 0.1487$

$P(t) = P(0)(1.1487)^{t}$

Suppose it is known that the population is 12,000 after 3 years.

With this, we find P(0)

$P(t) = P(0)(1.1487)^{t}$

$12000 = P(0)(1.1487)^{3}$

$1.5157P(0) = 12000$

$P(0) = \frac{12000}{1.5157}$

$P(0) = 7917$

4 0

3 years ago

(x+ delta x)^4 please help me

alexandr402 [8]

The awnser would be , 4x+4adetx

8 0

3 years ago