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3 years ago

How

Mathematics

2 answers:

aniked [119]3 years ago

8 0

Answer:

Step-by-step explanation:

Let's simplify that before we make the decision, shall we? We'll get rid of the parenthesis by distribution and then combine like terms.

4x - 20 = 3x + 7 and combining like terms and getting everything on one side of the equals sign:

1x - 27 = 0. Since that x has a power of 1 on it (linear), that means we have only 1 solution. If that was an x², we would have 2 solutions; if that was an x³, we would have 3 solutions, etc.

Alecsey [184]3 years ago

5 0

Answer:

A one solution

Step-by-step explanation:

4(x - 5) = 3x + 7

Distribute

4x - 20 = 3x+7

Subtract 3x from each side

4x-3x-20 = 3x+7-3x

x -20 = 7

Add 20 to each side

x -20+20 = 7+20

x = 27

There is one solution

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IceJOKER [234]

Answer:

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Step-by-step explanation:

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Marat540 [252]

The area of triangle BMN is 124.7 square centimeter.

<h3>What are similar triangles?</h3>

Similar triangles are triangles that their corresponding angles are equal and the ratio of their corresponding lengths are equal. They are often similar When at least Two angles are equal or The ratio of any corresponding lengths are same.

Analysis:

AB = AC = BC = 50cm

AH = AC/2 = 50/2 = 25cm

From Δ ABH, using Pythagoras theorem to find BH.

$(BH)^{2}$ = $(AB)^{2}$ - $(AH)^{2}$

$(BH)^{2}$ = $50^{2}$ - $25^{2}$

$(BH)^{2}$ = 2500 - 625

$(BH)^{2}$ = 1875

BH = $\sqrt{1875}$ = 43.3cm

ΔBMN and BHC are similar,

so, BM/BH = MN/HC

BM/43.3 = 12/25

25BM = 12 X 43.3

BM = 519.6/25 = 20.78cm

Area of ΔBMN

= 1/2(MN)(BM) = 1/2 x 12 x 20.78 = 124.7 square centimeter

Learn more about similar triangles: brainly.com/question/2644832

#SPJ1

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1 year ago

Neko [114]

Add the number of miles it takes to get from Austin to Dallas and add that to the number of miles it takes to go from Dallas to Oklahoma. 181+206=387

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2 years ago

Jason had 3/4 pound of salami. He used 1/3 pound for sandwiches.

Olin [163]

<span>Jason had ¾ pound of Salami.
He used 1/3 of it for sandwhich, now find the number of pound of salami left.
=> ¾ - 1/3
=> ¾ - 1/3, since the given equation contains different denomination, find the least common denominator
=> so the LCD is 12
=> ¾ - 1/3 = 9/12 – 4/12
=> 9/12 – 4/12
=> 5/12
Thus, the answer is letter C. 5/12 pounds is left to Jason’s Salami.</span>

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3 years ago

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kodGreya [7K]

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