The weight of an empty pickup truck is 2.1 times the weight of an empty car. if the empty car weighs 1.8 tons, how many tons does the pickup weigh carrying a 0.5 ton load

4.28 tons

Step-by-step explanation:

We are given that

Weight of empty car=1.8 tons

Weight of empty truck =

We have to find weight  of pickup when it carrying 0.5 tons load.

Weight of pickup  when it carrying 0.5 tons load carrying

=Weight of empty pickup truck+ Weight of load

Weight of pickup when it carrying 0.5 tons load

=

Hence, the weight of pickup when it carrying 0.5 tons load=4.28 tons

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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