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2 years ago

Which property of equality could be used to solve x - (-6) = 18?

Mathematics

1 answer:

oksian1 [2.3K]2 years ago

8 0

Answer:subtraction property

Step-by-step explanation:

Two a negative and a negative makes a positive so it would be x+6=18 so u do the opposite on both sides so it would be subtraction

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Which expression could be modeled by decimal grid?

faust18 [17]

Answer:

D) 0.80×0.40 so the answer is D

7 0

2 years ago

Which of the following expressions are equivalent to 6.53 - (-4.11) + 7.926.53?

umka21 [38]

Answer:

Choice B and Choise C.

Step-by-step explanation:

Equivalent expressions are those expressions that have the same value but they look different.

Given the following expression provided in the exercise:

$6.53 - (-4.11) + 7.92$

You need to remember the multiplication of signs in order to find the equivalent expressions:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-$

Then:

- Eliminating the parentheses, you get this equivalent expression:

$6.53 +4.11 + 7.92$

- Since the mulplication of two negative signs gives yous a positive sign, you can rewrite the original expression in this form:

$-(-6.53)+4.11-(-7.92)$

This is an equivalent expression to $6.53 - (-4.11) + 7.92$

8 0

2 years ago

Finding Derivatives Implicity In Exercise, find dy/dx implicity.<br> ln xy + 5x = 30

Sphinxa [80]

Answer:

dy/dx = -5y - y/x

Step-by-step explanation:

In xy + 5x = 30

Differentiating xy implicitly

y + xdy/dx

Assuming u = xy

In xy = In u

Differentiating In u = 1/u = 1/xy

Differentiating 5x = 5 and differentiating a constant (30) = 0

1/xy(y + xdy/dx) + 5 = 0

(y + xdy/dx)/xy = -5

(y + xdy/dx) = -5xy

xdy/dx = -5xy - y

dy/dx = = (-5xy - y)/x

dy/dx = -5y - y/x

7 0

2 years ago

Help me pleasee !!!!

Daniel [21]

Answer:

here (edit I made a mistake)

Step-by-step explanation:

9) $y=\frac{3}{5} x +5$

10) y = x - 3

11) $y=-\frac{3}{5} x - 3$

12) $y=\frac{5}{4} x + 2$

these are the slop int forms, my bad...

sorry

3 0

1 year ago

Read 2 more answers

A courier service advertises that its average delivery time is less than six hours for local deliveries. A random sample of size

Diano4ka-milaya [45]

Answer, Step-by-step explanation:

According to the exercise, we evaluate the delivery time of a courier company and we will hypothesize the best case with a sample size of 10, which is:

Small sample T test for single mean

The hypothesis that we will develop will be the following:

null hypothesis = mu> = 6

hypothesis alternativa: <6

3 0

2 years ago