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2 years ago

HELPP DESPERATELY

Mathematics

1 answer:

luda_lava [24]2 years ago

4 0

Answer:

Point Q = (3.6, 1.4)

Step-by-step explanation:

The 4:1 ratio should first be changed to 4/5.

y2-y1= 2+1 = 3 which as a fraction is 3/1, now multiply that which the earlier fraction 4/5 to get 12/5 = 2.4

x2-x1= 4-2= 2 which as a fraction is 2/1, do the same as earlier, multiply by 4/5 to get 8/5 = 1.6

now add these to A to get point Q

2+1.6= 3.6

-1+2.4=1.4

Point Q = (3.6, 1.4)

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two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they

Rashid [163]

Answer:

The first mechanic charges $105 per hour, and the second mechanic charges $90 per hour.

Step-by-step explanation:

If x is the rate of the first mechanic, and y is the rate of the second mechanic, then:

10x + 5y = 1500

x + y = 195

Solve the system of equations using elimination or substitution. Using substitution:

10x + 5 (195 − x) = 1500

10x + 975 − 5x = 1500

5x = 525

x = 105

y = 195 − x

y = 90

The first mechanic charges $105 per hour, and the second mechanic charges $90 per hour.

4 0

3 years ago

Which operation should you perform first when you simplify 63 − (2 + 54 × 6) ÷ 5?A addition B division C subtraction D multiplic

miv72 [106K]

Answer:

Multiplication

Step-by-step explanation:

PEMDAS

Parentheses

Exponents

Multiplication

Division

Addition

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-Since there are parentheses you do that first, so multiplication.

7 0

3 years ago

Which transformation will map figure H onto figure H'?

liberstina [14]

Answer: The answer is (B) vertical translation of 10 units.

Step-by-step explanation: We are to select the correct transformations that will map figure H onto figure H'.

We can see from the graph that if the figure H is translated vertically downwards by 10 units, then the new figure will coincide with the figure H'.

So, vertical translation of 10 units will be the correct transformation.

The other three translations - reflection across the y-axis, vertical translation of 15 units and reflection across the x-axis will not map figure H onto figure H'.

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7 0

3 years ago

Read 2 more answers

Please help me with this homework

lorasvet [3.4K]

You get the final solution. You wouldn’t need to simplify anything

6 0

3 years ago

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A vet was interested in seeing if there was a difference in the number of pets that someone owned based on if they spayed or neu

Pachacha [2.7K]

Answer:

The correct option is (a).

Step-by-step explanation:

The (1 - α)% confidence interval for population parameter implies that there is a (1 - α) probability that the true value of the parameter is included in the interval.

Or, the (1 - α)% confidence interval for the parameter implies that there is (1 - α)% confidence or certainty that the true parameter value is contained in the interval.

The 95% confidence interval for the difference between the mean number of pets who were not spayed/neutered from that of those who were spayed/neutered is,

CI = (-2.77, -0.42).

The number of pets who were not spayed/neutered is labelled as Group 1.

The number of pets who were spayed/neutered is labelled as Group 2.

The parameter under study is:

μ₁ - μ₂

The 95% confidence interval for the difference of means implies that there is a 95% confidence that the population mean number of pets owned by people that did not spayed/neutered their pet was between 0.42 to 2.77 pets less than those who did spay or neuter their pet.

Thus, the correct option is (a).

5 0

3 years ago