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Nutka1998 [239]
3 years ago
11

Henrique began to solve a system of linear equations using the linear combination method. His work is shown below: 3(4x – 7y = 2

8) → 12x – 21y = 84 –2(6x – 5y = 31) → –12x + 10y = –62 12x – 21y = 84 + –12x + 10y = –62 –11y = 22 y = –2 Complete the steps used to solve a system of linear equations by substituting the value of y into one of the original equations to find the value of x. What is the solution to the system? ( , )
Mathematics
2 answers:
larisa [96]3 years ago
8 0

Answer:

3.5, 2

Step-by-step explanation:

i took the test or i did the assignment i forgot what it was, but i dont remember the steps .

Naetoosmart
2 years ago
you forgot the negative sign in front of the 2
Digiron [165]3 years ago
4 0

Answer:

( 3.5 , -2 )

Step-by-step explanation:

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It says solution to the equation as a decimal q-1.8+1.8=14+1.8
Zielflug [23.3K]
Q-1.8+1.8=14+1.8= Q=15.8 hope this helps
6 0
3 years ago
The senior classes at High School A and High School B planned separate trips to the county fair. The senior class at High School
elena-s [515]

vans = v, buses = b, students = s

8v + 8b =312s ...eqn 1

9v + 4b = 196s ...eqn 2

divide eqn 1 by 2

4v + 4b = 156s ...eqn 3

eqn 2 - eqn 3

5v = 40s

v = 8s

subst v = 8s in eqn 2

72s + 4b = 196 s

b = 31s

answer

each van holds 8 students and each bus holds 31 students

8 0
3 years ago
A recipe calls for 2 tsp of salt, 1 tsp of pepper, and 4 tsp of garlic powder. How much pepper and garlic powder would you need
MakcuM [25]

Answer:

amount of pepper required= 7.5 tsp

amount of garlic powder required = 30 tsp

Step-by-step explanation:

Given,

amount of salt used for small batch of the recipe = 2 tsp

amount of pepper used for small batch of the recipe = 1 tsp

amount of garlic powder used for small batch of the recipe = 4 tsp

amount of salt used for the larger batch = 15 tsp

                                                             = 2 x 7.5 tsp

                                                             = amount of salt used for small batch the recipe x 7.5

So,

the amount of pepper needed for the larger batch= 7.5 x amount of pepper used for the small batch of recipe

                                                                      = 7.5 x 1 tsp

                                                                       = 7.5 tsp

the amount of garlic powder needed for the larger batch= 7.5 x amount of garlic powder used for the small batch of recipe

                                                                                          = 7.5 x 4 tsp

                                                                                          = 30 tsp

3 0
3 years ago
There are 1,000 cans of cat food produced daily at a factory. in the meeting last week, the
BaLLatris [955]

Using the binomial distribution, it is found that the true statement related to the number of cans of cat food the company expects to be dented is given by:

B. The factory can expect to have an average of 50 cans dented in a day.

<h3>What is the binomial probability distribution?</h3>

It is the probability of exactly<u> x successes on n repeated trials, with p probability</u> of a success on each trial.

The expected value of the binomial distribution is:

E(X) = np

In this problem, we have that there are 1000 cans, each with a probability of 1/20 of being dented, hence:

n = 1000, p = 1/20 = 0.05.

The expected value is then given by:

E(X) = np = 1000 x 0.05 = 50.

Researching the problem on the internet, the correct option is given by:

B. The factory can expect to have an average of 50 cans dented in a day.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

4 0
2 years ago
Victoria has a points card for a movie theater.
SVETLANKA909090 [29]

Answer: she needs to go 12 times

Step-by-step explanation:

7 0
3 years ago
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