MATHEMATICS HIGH SCHOOL

I REALLY NEED HELP PLEASE The measures of three line segments are given in each set Which set of line segments cannot form a triangle? 0 23.2 m, 58.6 m, 72.1 m O 45.2 m, 45.3 m, 45.4 m 0 20.8 m, 34.5 m, 54.2 m 0 12.6 m, 18.1 m, 30.9 m

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Answer 1

Answer:

Answer:

The Answer is D

Step-by-step explanation:

K12

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V = u + 10t Work out the value of v when u = 10 and t = 7
What is a factor of twenty four?

If the point (7, 3) is on the graph of an equation, which statement must be true?A. The values x = 3 and y = 7 make the equation true.
B. The values x = 7 and y = 3 are the only values that make the equation true.
C. There are solutions to the equation for the values x = 7 and x = 3.
D. The values x = 7 and y = 3 make the equation true.

Answers

Answer:

The value of x=7 and y=3 make the equation true.

D is correct.

Step-by-step explanation:

If the point (7, 3) is on the graph of an equation.

If point lie on any graph then the value of x and y satisfy the equation. It means equation would be true for the given passing point.

First value of point is x and second value is y

For given point: (7,3)

x=7 and y=3

If we put x=7 and y=3 in the graph of the equation then equation must be true.

because it makes equation true.

For true equation left side must be equal to right side.

Hence, The value of x=7 and y=3 make the equation true.

The best answer would be D. because:
1) x = 7 and y = 3 in that specific coordinate
2) if the point is on the graph and is labeled it is 1 of the MANY solutions that make that specific equation true

There is a chance for B. but if its infinate then (7,3) couldn't be the ONLY coordinate that makes it true

moving company a charges 45$ on arrival and $25 an hour. The final bill was $470. How many hours did the movers work?

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17 hours because if it's $25 an hour then you multiply 17 times 25 and you get 425 then you add the arrival money which is $45 then you get $470 :)

A carpenter purchased 50 ft of redwood and 90 ft of pine for a total cost of $274. A second purchase at the same prices include 80 ft of redwood and 50 ft of pine for a total cost of 335. Find the cost per foot of redwood and of pine

Answers

Answer:

Redwood: $3.50 per foot

Pine: $1.10 per foot

Step-by-step explanation:

The manner that should be approach is by using the substitution method.

Therefore using the information from the question:

50 ft of redwood and 90 ft of pine give a total cost of $274

So we use this information and make a equation using x and y, in this case redwood would be x and pine would be y.

$50x + 90y=274$

We do this for the second purchase also...

$80x+50y=335$

Now, we have two equations that are perfect for the usage of the substitution method.

$50x + 90y=274$

$80x+50y=335$

Using one equation, in this case the top one, we must solve for either x or y (in this case we solved for y)

$90y=274-50x$

$(90y)/(90) =(274)/(90) -(50x)/(90)$

$y=(274)/(90) -(50x)/(90)$

Using this equation from above we insert this into the other equation that deals with the second purchase and solve for x now.

$80x+50((274)/(90) -(50x)/(90))=335$

$80x+152.2-27.8x=335$

$80x-27.8x=182.8$

$(52.2x)/(52.2) =(182.8)/(52.2)$

$x=3.50$

This is the cost of redwood so now we use this answer and plug it in either equation in order to get the cost of pine (y).

$50(3.5)+90y=274$

$175+90y=274$

$(90y)/(90)=(99)/(90)$

$y=1.1$

So therefore you get the two costs by using the substitution method!

~~~~Best!!!

10 x 4 ones = how many ones

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The product will be 40 I believe?

Solve using substitution

x = y +3
-3x + 3y = 6

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$\large\bf{\underline{\underline{\mathfrak{Question}:}}}$

Solve using substitution

x = y +3,

-3x + 3y = 6

$\large\bf{\underline{\underline{\mathfrak{Solution}:}}}$

Giventhat,

${\small{\rm{x=y+3}}}$

Equation:

${\small{\rm{-3x + 3y = 6}}}$

So,

By substituting the value of xthat is y+3 in the given equation we get,

$:{\Longrightarrow{\small{\rm{-3(y+3) + 3y = 6}}}}$

$:{\Longrightarrow{\small{\rm{-3y-9+ 3y = 6}}}}$

$:{\Longrightarrow{\small{\rm{\cancel{-3y}-9\cancel{+3y} = 6}}}}$

$:{\Longrightarrow{\small{\rm{x = 6+9}}}}$

$:{\Longrightarrow{\small{\rm{x = 15}}}}$

${\therefore{\small{\rm{Value\:of\:x = 15}}}}$

Now to find the value of Y use the value of x in the givenequation.

$:{\Longrightarrow{\small{\rm{-3(15) + 3y = 6}}}}$

$:{\Longrightarrow{\small{\rm{-45+ 3y = 6}}}}$

$:{\Longrightarrow{\small{\rm{3y = 6+45}}}}$

$:{\Longrightarrow{\small{\rm{3y = 51}}}}$

$:{\Longrightarrow{\small{\rm{y =(51)/(3)}}}}$

$:{\Longrightarrow{\small{\rm{y =17}}}}$

${\therefore{\small{\rm{Value\:of\:y = 17}}}}$

Forverification:

$:{\Longrightarrow{\small{\rm{-3(15) + 3(17) = 6}}}}$

$:{\Longrightarrow{\small{\rm{6= 6}}}}$

Henceverified!

What is the measure of mop

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61 degrees, hope this helps!

I REALLY NEED HELP PLEASE The measures of three line segments are given in each set Which set of line segments cannot form a triangle? 0 23.2 m, 58.6 m, 72.1 m O 45.2 m, 45.3 m, 45.4 m 0 20.8 m, 34.5 m, 54.2 m 0 12.6 m, 18.1 m, 30.9 m​

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Forverification:

Henceverified!

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I REALLY NEED HELP PLEASE The measures of three line segments are given in each set Which set of line segments cannot form a triangle? 0 23.2 m, 58.6 m, 72.1 m O 45.2 m, 45.3 m, 45.4 m 0 20.8 m, 34.5 m, 54.2 m 0 12.6 m, 18.1 m, 30.9 m