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3 years ago

Which expresion is equivalent to -5 -(-7)? HURRY 20 POINTS

Mathematics

1 answer:

grigory [225]3 years ago

3 0

Answer:

<h2>2 (the answer should have a positive sign.)</h2><h2>The equivalent to -5-(-7) is -5+7.</h2>

Step-by-step explanation:

To solve this problem, use the order of operations.

PEMDAS

Parentheses

Exponents

Multiply

Divide

Add

Subtract

$\sf{-5-(-7)=-5+7}$

$\sf{-5+7}$

Add or subtract.

Solve.

$-5+7=2$

$\large\boxed{2}$

So, the correct answer is 2.

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A man drives from his home at 30 miles per hour to a shopping mall that is 20 miles from his home. On the return trip, he encoun

Sati [7]

First half: 30 miles per hour for 20 miles. Time taken:

$d=st \iff t=\dfrac{d}{s}=\dfrac{30}{20}=1.5$

Second half: 12 miles per hour for 20 miles. Time taken:

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3 years ago

At the beginning of a population study, a city had 370,000 people. Each year since, the population has grown by 6. Let be the nu

Maru [420]

The exponential function that gives the relationship between y and t is:

$y = 370000(1.06)^t$ .

<h3>What is an exponential function?</h3>

An increasing exponential function is modeled by:

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

In which:

A(0) is the initial value.

r is the growth rate, as a decimal.

In this problem, the parameters are given as follows:

A(0) = 370000, r = 0.06.

Hence the equation is:

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

$y = 370000(1 + 0.06)^t$

$y = 370000(1 .06)^t$

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2 years ago

An art gallery is increasing the asking price of its paintings by 60%. A painting now costs $400.00. How much was the painting b

Simora [160]

Answer:

$250

Step-by-step explanation:

The goal here is to find the cost of the painting BEFORE the 60% increase.

To find the cost of the painting, we must take in the information we already have:

Increase percent: 60%

Original price: unknown

Price after increase: $400

$400 is the price of the painting AFTER the increase has been added. So this equals the cost of the painting before the increase, plus the total amount of the increase (which is 60% of the original price).

The total must be (100% + 60% = 160%) 160% of the original painting price.

To find the original price, we must divide the increased price by the new percentage (160%). But how do we get here?

Well, we have 160% and our (fraction) $400/1%. We will have to switch the 160% and the 1%, giving us..

1% $400/160%

We take 400/160, which is 2.5. But this is only 1% of the original price! We want 100%.

So now, we multiply the 2.5 by 100 to get our answer: $250.

8 0

3 years ago

2 = x - 3<br><br> whats the answer?

Effectus [21]

Answer:

x=1

Step-by-step explanation:

Hope this helps and have a wonderful day!!!

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3 years ago

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Help I’ll mark you brainly!

Gnesinka [82]

Pls mark brainleist

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3 years ago