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baherus [9]
2 years ago
14

ILL MAKE BRAINLY??!!!?!!!!!

Mathematics
1 answer:
Leno4ka [110]2 years ago
6 0

Answer:

Mizuki here to answer! B is the correct answer!

Step-by-step explanation:

1 - 0.4 = 0.6

2.1 x 0.6 = 1.26

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Use the substitution method to determine the solution to the system of equations below. y-2x+2=1 6x - 3y = 3​
vaieri [72.5K]

Answer:

y = 2x - 1

Step-by-step explanation:

y - 2x + 2 = 1

6x - 3y = 3​

<u />

<u />y - 2x + 2 = 1 \\  +2x  - 2    +2x  - 2\\y = 2x - 1

Plug in for y:

6x - 3(2x - 1) = 3​

6x - 6x + 3 = 3

Simplified, 3 = 3

7 0
2 years ago
Read 2 more answers
A manager of a grocery store wants to determine if consumers are spending more than the national average of $150 with a standard
Semmy [17]

Answer:

A.) The manager calculated mean and not standard deviation

B.) Standard deviation should be calculated with the use of formula.

Step-by-step explanation:

A.) The assumption that his customers do spend more than the national average is wrong because the standard deviation is not calculated and mean cannot be used as a substitute for standard deviation.

B.) Standard deviation tells us how value obtain from group measurement deviates from the average value or expected value of each item of observations.

When standard deviation is low, this show that the value is very close to the expected value or the average value.

If the national average value = $150 and average customer spends $160. 

Deviation = 160 - 150 = 10

This is lower than $30

Or better still, the manager should make use of standard deviation formula. Which is the square root of variance.

8 0
3 years ago
Which of these rate descriptions represent unit rates? Check all that apply. 1. 100 calories for 2 servings 2. $5 for every poun
hjlf

Answer:4

Step-by-step explanation:

5 0
3 years ago
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Austin is riding his dirt bike at a speed of 350 feet per minute. How many yards would he have traveled in 2.5 hours? (HINT: 3 f
Harrizon [31]

Answer:

17,500 yards

Step-by-step explanation:

Speed of Austin's bike = 350 ft per minute

Given 3 feet in 1 yard

Now converting speed from  ft/min to yard per minute

3 feet equal 1 yard  (dividing both side by 3)

1 feet equals 1/3 yards

350 ft equals 350*1/3 yards

350 ft equals 350/3 yards

speed of bike in yards per minute = 350/3 yards per minute

______________________________________

Time for which bike traveled = 2.5 hour

one hour has 60 minutes

2.5 hour has 60*2.5 minutes

2.5 hour has 150 minutes

Time for which bike traveled in minutes = 150 minutes

________________________________________

formula for distance = speed * time

substituting value of  speed and time in above equation we have

distance =  350/3 * 150 = 17,500 yards

Distance traveled by Austin's bike in 2.5 hours is 17,500 yards.

5 0
3 years ago
The angle measures 36°, 62°, 118°, and 144° are written on slips of paper. You choose two slips of paper at random.
Cerrena [4.2K]

1/4 would be the answer. Let me explain why first. You have in total 4 numbers with different out comes when added together. So your equation will start out as 4² = 16 out of the 16 different factors you have 4 sets that equal 180°. Your new fraction would be 4/16 which can be divided by 4 to equal 1/4. Hopes that helps!

6 0
3 years ago
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