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3 years ago

7.03) An equation is shown below: 5(2x - 8) + 15 = -15 Write the steps you will use to solve the equation and explain each step.

Mathematics

1 answer:

laila [671]3 years ago

4 0

So firstly, I would foil 5(2x - 8). $10x-40+15=-15$

Next, I would combine like terms: $10x-25=-15$

Next, I would add 25 on each side: $10x=10$

Finally, I would divide 10 on each side, and my answer would be x = 1.

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Four people recorded the miles they drove and the time they spent driving. The table below shows

Irina-Kira [14]

Answer:

C: Charles

Step-by-step explanation:

165 miles divided by 6 hours

165/2.5

66 miles in one hour

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3 years ago

A rental car company charges $42.72 per day to rent a car and $0.10 for every mile driven. Zoey wants to rent a car, knowing tha

Colt1911 [192]

Answer:

7 Days

Step-by-step explanation:

Miles cost:

$0.10 * 200 = $20

Daily Cost

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$330 / 42.72 = Roughly 7.72

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3 years ago

In 2000 the total amount of gamma ray bursts was recorded at 6.4 million for a city. In 2005, the same survey was made and the t

ratelena [41]

Let's assume

It started in 2000

so, t=0 in 2000

$P_0=6.4million$

we can use formula

$P(t)=P_0 e^{rt}$

we can plug value

$P(t)=6.4 e^{rt}$

In 2005, the same survey was made and the total amount of gamma ray bursts was 7.3 million

so, at t=2005-2000=5

P(t)=7.3 million

we can plug value and then we can solve for r

$7.3=6.4 e^{r*5}$

$r=0.02632$

now, we can plug back

$P(t)=6.4 e^{0.02632t}$

now, we have

P(t)=1 billion =1000 million

so, we can set it and then we can solve for t

$1000=6.4 e^{0.02632t}$

$t=191.924$

approximately

$t=192$

Year is 2000+192

year is 2192................Answer

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3 years ago

Some one help not sure! i’ll mark brainlest

Anna [14]

Answer:

Ya, Its B.

Step-by-step explanation:

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3 years ago

Read 2 more answers

It's urgent I need help quick pls help me

Stella [2.4K]

Answer:

Step-by-step explanation:

16 - 4 $\sqrt{5}$ + 4 $\sqrt{5}$ - 5

= 16 - 5

= 11

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3 years ago