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umka21 [38]
3 years ago
8

Can someone be helpful

Mathematics
2 answers:
Murrr4er [49]3 years ago
8 0

I would be happy to be helpful!

5 more than the sum of -1 and -12

lets start with the 2nd part, the sum of -1 and -12

sum means adding 2 things together, so -1 + -12 = <u>-13</u>

now lets work on the first part again, it said 5 MORE, more means add as well, so

-13 + 5 = -8

tia_tia [17]3 years ago
8 0

Given

"5 MORE than..." so we need to ADD 5, or "+5 " as the last step, so 3rd and fourth are out.

"the sum of -1 and -12" means we need to see the expression (-1)+(-12), so the second and third are out.

That leaves us with the first, let's check

5 more than the sum of -1 and -12

[-1 + (-12)]+5 => (sum of -1 and -12) add 5 to it......checks.

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Shalnov [3]

Answer:

Read the sentence below, which appears in the brochure “Nanotechnology: Big Things from a Tiny World.” As you read, look for context clues that could help you define any scientific terms.

Scientists have also developed sensors to measure pesticide levels in the field, allowing farmers to use less while still protecting their plants.

According to the context clues provided by the author, what is a pesticide?

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Step-by-step explanation:

Read the sentence below, which appears in the brochure “Nanotechnology: Big Things from a Tiny World.” As you read, look for context clues that could help you define any scientific terms.

Scientists have also developed sensors to measure pesticide levels in the field, allowing farmers to use less while still protecting their plants.

According to the context clues provided by the author, what is a pesticide?

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3 0
3 years ago
I need help im lost on finding n
shepuryov [24]

Answer:

If I read this right

3 (n -12) + 14 = 4 (7 - 5n)

First, remove the parentheses

3 n - 36 + 14 = 28 - 20 n

Combining terms

23 n = 28 - 14 + 36 = 50

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2 years ago
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Julli [10]
The inputs of a relation
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3 years ago
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SVEN [57.7K]

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Step-by-step explanation:

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The distance between two cities is 145 miles. A truck can cover this distance in 2. 5 hours. A car is 1. 5 times as fast as the
Sophie [7]

The relative speed of the car to the truck while moving towards each other is the sum of the speed of both vehicles.

  • The time it takes them to meet is <u>1 hour</u>

Reasons:

The distance between the cities, d = 145 miles

The time it takes a truck to cover the distance = 2.5 hours

The speed of the car = 1.5 × Th speed of the truck

Required:

The time it takes them to meet if they are moving towards each other.

Solution:

  • \displaystyle Speed = \mathbf{ \frac{Distance}{Time}}

\displaystyle Speed \ of \ the \ truck, \ v_{truck} = \frac{145 \ miles}{2.5 \ hours} = \mathbf{58 \ mph}

Therefore;

The speed of the car, v_{car} = 1.5 × 58 mph = 87 mph

At the time<em>, t</em>, the truck and the car meet, we have;

\mathbf{v_{car} \times t + v_{truck} \times t = d}

Which gives;

87 × t + 58 × t = 145

\displaystyle t = \mathbf{\frac{145}{87 + 58}} = 1

  • The time it takes them to meet, <em>t</em> = <u>1 hour</u>

Learn more about distance, time and speed here:

brainly.com/question/17609639

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