All categories

3 years ago

Use inverse operations to solve the equations y+3= - 20

Mathematics

1 answer:

Virty [35]3 years ago

4 0

Answer:

Y=-23

Step-by-step explanation:

Move constant to the right side and change the sign

y=-20-3

calculate difference

You might be interested in

Need to find best answer

Genrish500 [490]

Answer:

Step-by-step explanation:

The question is 10b/(2b + 8)

The reciprocal will not make a minus sign. B and C are both wrong. Powers can create a minus sign but not this kind of question

Two terms creating a binomial must stay together. In this case (2b + 8) must be entirely in the top or bottom of the fraction. That makes D wrong.

Answer: A is the correct reciprocal.

6 0

2 years ago

Find f(–3) for f(x) = 4(2)x.

miskamm [114]

Plug in -3 in the x.
4(2)(-3)= -24.

7 0

4 years ago

Read 2 more answers

Factor the expression completely. 25c-5

n200080 [17]

The factorised expression is 5(5c-1)

7 0

3 years ago

If a sum invested gains 10% each year how long will it be before it has doubled its value?

Anika [276]

Using an exponential equation, it is found that it will be 7.3 years before the value is doubled.

The equation for an increasing exponential function is given by:

$A(t) = A(0)(1 + r)^t$

In which:

A(0) is the initial amount.
r is the growth rate, as a decimal.

In this problem:

Gains 10% each year, thus $r = 0.1$ .

The doubling time is t for which $A(t) = 2A(0)$ , then:

$A(t) = A(0)(1.1)^t$

$2A(0) = A(0)(1.1)^t$

$(1.1)^t = 2$

$\log{(1.1)^t} = \log{2}$

$t\log{1.1} = \log{2}$

$t = \frac{\log{2}}{\log{1.1}}$

$t = 7.3$

It will be 7.3 years before the value is doubled.

A similar problem is given at brainly.com/question/23008760

4 0

3 years ago

U+3.65=8.33 solve for u.

Annette [7]

Answer:

Use an algebra calculator ;)

Step-by-step explanation:

it always works for me

3 0

3 years ago

Read 2 more answers