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Leto [7]
3 years ago
12

Kerri drives 150 miles to visit her grandmother. She starts off driving 60 miles per hour, but then encounters road construction

and has to drive 20 miles per hour the rest of the way. If she spends the same amount of time at the faster speed as at the slower speed, then how many HOURS did her 150-mile trip take in total?
Mathematics
1 answer:
QveST [7]3 years ago
8 0
I think it would be 2 and a half hours/ 2 hours and 30 minutes.
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Please Show Work 6x(-4) Six times negative four.
Ainat [17]

Answer:

6 x (-4)

= (-24)

Step-by-step explanation:

when multiplying integers, you first need to multiply the numbers. Then you need to look at the signs if both numbers have the same signs or if it doesn't. if the signs are the same, the product is a positive . If the two numbers have different signs, you will get a negative product.

NOTE: if a number doesn't have a sign, it's a positive number

7 0
3 years ago
Which property of soil depends on the size of particles?
seropon [69]

The property of soils which depends on the size of particles is Texture.

<h3>Properties of Soil</h3>

The properties of Soil include colour, odor, temperature, and texture as measured by porosity, mouldability and a host of other texture effects.

  • It is evident that the texture of soil is dependent on the size of the particles as it affects how packed the particles of the soil is.

Read more on properties of soil;

brainly.com/question/26462165

4 0
3 years ago
A population of 120,000 grows 3% per year for 15 years, how much will the population be after 15 years?
Wewaii [24]
270,000 is the answer because you have three over 100 so you do 100 divided by three which give you 0.15 then you do 120,000 times 0.15 to find out how much it grows per year to get 18,000 then you multiply 18’000 by 15 and get 270’000
3 0
4 years ago
-2x^2+5x-4=0 , find the discriminant
BaLLatris [955]

Answer:

The discriminant is -7

Step-by-step explanation:

The discriminant of a quadratic function/equation(ax^2+bx+c = 0) is calculated as:

b^2 -4ac

Here

b is the co-efficient of x

a is the co-efficient of x^2

and c is the constant

Given equation is:

-2x^2+5x-4=0

Here

a = -2

b = 5

c = -4

Putting the values in the formula for discriminant

= b^2 - 4ac\\= (5)^2 - 4(-2)(-4)\\= 25 - 32\\=-7

As the discriminant is negative, the equation has no real solution.

Hence,

The discriminant is -7

5 0
3 years ago
??? Answers please.....
Paha777 [63]
The answer to this problem is 8 I believe. I hope you do good





3 0
3 years ago
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