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nalin [4]
3 years ago
5

ILL GIVE BRAINLIEST Combine like terms. 4x – 7y + 2x – 4 = [ ? ]x + [ ]y + [ ]

Mathematics
2 answers:
maxonik [38]3 years ago
7 0

Answer:

[6x] + [-7y] + [-4]

Step-by-step explanation:

There are only two like terms in this expression "4x" and "2x." Since they are like terms we can combine them by adding the coefficients and keeping the variable attached. Therefore we can combine 4x and 2x into 6x. Since there are no more like terms, this expression can be simplified to 6x - 7y - 4.

kvasek [131]3 years ago
5 0
Answer:

6x - 7y - 4

Step-by-step explanation:

4x - 7y + 2x - 4

Combine like terms (by either subtracting or adding a number with the same variable)

4x + 2x = 6x

Thus, only one like term so the final answer is

6x - 7y - 4
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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
IgorLugansk [536]

Answer:

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

Step-by-step explanation:

Given that;

mean x" = 5.4

standard deviation σ = 0.7  

n = 6

Null hypothesis H₀ : μ = 5.0  

Alternative hypothesis H₁ : μ > 5.0    

∝ = 0.025    

now,

t = ( 5.4 - 5.0) / ( 0.7/√6) = 0.4 / 0.2857 = 1.4

degree of freedom df = n-1 = 6 - 1 = 5

T critical = 2.571

Therefore; t < T critical,

Do no reject null hypothesis.  

Conclusion:

there is no sufficient statistical evidence at 0.025 level of significance to support the claim.

3 0
3 years ago
Six workers can do 9 identical jobs in 3 days. How long will it take 4 workers to do 10 such jobs ???
Delicious77 [7]
6 workers-9 jobs in 3 days
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So. They can do 10 jobs in 5 days
4 0
3 years ago
2203
ale4655 [162]

Answer:

sorry im just answering this cuz need points

Step-by-step explanation:

5 0
3 years ago
9. You are standing on a mountain that is 6842 feet high. You are looking down at your campsite, creating an angle of depression
Mkey [24]

Answer:

<u>8,764.53 feet</u>

Step-by-step explanation:

See the attached figure which represents the question.

Let the distance between campsite and the base of the mountain = d

The total height = 6842 + 5.6 = 6,847.6 feet.

As shown at the graph, the angle x and the depression angle are alternate angles, so they are congruent.

∴∠x = 38°

tan x = opposite/adjacent = (total height)/d = 6847.6/d

So, d = 6847.6/tan x

        = 6847.6/tan 38° = 8,764.53 feet (to the nearest hundredth)

so, the distance between campsite and the base of the mountain = 8,764.53 feet

4 0
3 years ago
Solve this please. It's bit confusing.​
DerKrebs [107]

Answer: Plug in every number in the matrix into the function to form a new matrix

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3 years ago
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