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3 years ago

Solve2x^2 + 3x = 5 by factoring

Mathematics

2 answers:

diamong [38]3 years ago

8 0

Downloaded Photomath it’s going to help you a lot, and teaches you step by step, also it’s free try it

hodyreva [135]3 years ago

4 0

Answer:

x = -5/2

x = 1

Step-by-step explanation:

2x² + 3x = 5

2x² + 3x - 5 = 0

(2x + 5)(x - 1) = 0

2x + 5 = 0

2x = -5

x = -5/2

x - 1 = 0

x = 1

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Alex17521 [72]

Answer:

1) 60

2) 60

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Step-by-step explanation:

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3 0

2 years ago

Use prime factorization to find the least common multiple of 54 and 36

irinina [24]

Answer: 108

Explanation:

GCF(36,54) = 18
LCM(36,54) = ( 36 × 54) / 18
LCM(36,54) = 1944 / 18
LCM(36,54) = 108

6 0

2 years ago

Need help with solving a 2x2 system of linear equations<br><br> PLEASE HELP ME

Yakvenalex [24]

$\bf \begin{array}{llll}
-5x-y=5\\
-5x+y=5\\
-------\\
-10x+0=10
\end{array}\implies -10x=10\implies x=-1$

so if x = -1, let's plug that in the second equation

-5(-1)+y = 5
5+y = 5
y = 0

7 0

3 years ago

Ella collects 50 bottles to recycle. Of the bottles she collects, 19 are plastic and the rest are glass.

nekit [7.7K]

QUESTION A

The total number of bottles Ella collected is
$50$

The number of bottles that are plastic is

$19$

The percentage of bottles that are plastic is

$= \frac{number \: of \: plastic \: bottles}{total \: number \: of \: bottes} \times 100\%$

$= \frac{19}{50} \times 100\%$

$= 19 \times 2\%$
$= 38\%$

Therefore 38% of the bottles are plastic.

QUESTION B

The total number of bottles that are glass is
$50 - 19 = 31$

The total number of bottles Ella collected is
$50$

The percentage of bottles that is glass is
$= \frac{number \: of \: glass \: bottles}{total \: number \: of \: bottles} \times 100\%$

$= \frac{31}{50} \times 100\%$

$= 31 \times 2\%$
$= 62\%$

Therefore 62% of the bottles are glass

8 0

2 years ago

The radius of the circular track was 157.64 feet find the circumference of the track

DerKrebs [107]

Before we solve for anything, let's remember what our formula is.

The circumference of a circle is 2PiR (2 x Pi x R).

Our radius is 157.64.
Pi is 3.14 (estimated).

Let's plug our numbers into the formula.

Circumference = 2 x 3.14 x 157.64.
2 x 3.14 = 6.28
6.28 x 157.64 = 989.979 (990 if estimated).

Your circumference is:
989.979 ft^2.

I hope this helps!

7 0

2 years ago