2 years ago

Help with the first question!! Is it right??

Mathematics

1 answer:

Aloiza [94]2 years ago

6 0

No its 20 u should know that

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For their homecoming parade, the students of U-Math have created a colorful banner, 57 meters in length, that is made of two

BartSMP [9]

Answer:

$Length\ of\ the\ long\ piece=40\ meters\\\\Length\ of\ the\ short\ piece=17\ meters$

Step-by-step explanation:

Let be "s" the length in meters of the short piece and "l" the lenght in meters of the long piece.

Set up a system of equations:

$\left \{ {{s+l=57} \atop {s=l-23}} \right.$

Apply the Substitution Method to solve the system. Substitute the second equation into the first equation and solve for "l":

$(l-23)+l=57\\\\2l=80\\\\l=\frac{80}{2}\\\\l=40$

Susbstitute the value of "l" into the second equation in order to find the value of "s". This is:

$s=40-23\\\\s=17$

6 0

3 years ago

The sum of 27 and seven times a number is 125. Find the number.

zysi [14]

The number is 14

Here's the solution:

Let the number be x

According to the question,

27+7x=125

//Subtract 27 from both the sides

7x=125-27

7x=98

//divide both the sides by 7

x=98/7

x=14

9 0

2 years ago

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I really need help i think my brain died

lyudmila [28]

Same cause school kinda slow bsndndndndnndnfnfnfnfn sorry I need the points

4 0

2 years ago

Olive Garden is only 10 square yards in the watermelon plants she wants to grow require two and a half square yards each how man

aleksandr82 [10.1K]

4 because 2.5 x 4 = 10 :)

5 0

2 years ago

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Plssss helppp meeeee

saw5 [17]

Answer:

the answer should be 152.6 ! just moving the decimal over to the left!!

8 0

1 year ago