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2 years ago

HELP PLS IM DOING A EXAM!!!!

Mathematics

2 answers:

Misha Larkins [42]2 years ago

4 0

Slopeeeeeeeee is equal to 2

nexus9112 [7]2 years ago

4 0

Answer:

you need to do it yourself.

Step-by-step explanation:

If anyone give you answer and if you pass then , you will cheat yourself

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20 points brainliest!!!!

maksim [4K]

Answer:

c i think

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

What is the value of 5a + 7b <br> if a = 4 and b = 3?? <br> a : 41<br> b : 12<br> c : 43 <br> d : 35

MAXImum [283]

<h3>Answer:</h3><h3>41</h3><h3>Step-by-step explanation:</h3><h3>multiplication and addition</h3><h3>5x4=20</h3><h3>7x3=21</h3><h3>20+21=41</h3>

8 0

2 years ago

Read 2 more answers

Maitri and Aabhas do a work in 12 hours.

tamaranim1 [39]

Answer:

See below ~

Step-by-step explanation:

<u>Given</u>

Maitri and Aabhas do a work in 12 hours
Aabhas and Kavya do the work in 15 hours
Kavya and Maitri do the work in 20 hours

<u>Solving</u>

Take Maitri, Aabhas, and Kavya to be x, y, z respectively
<u>x + y = 12</u> (1)
<u>y + z = 15</u> (2)
<u>x + z = 20</u> (3)

<u>Take Equation 1 and rewrite it so that it is equal to x.</u>

x = 12 - y

<u>Take Equation 2 and rewrite it so that it is equal to z.</u>

z = 15 - y

<u>Now, substitute these values in Equation 3.</u>

x + z = 20
12 - y + 15 - y = 20
-2y + 27 = 20
2y = 7
y = 7/2 = <u>3.5 hours [Aabhas]</u>

<u></u>

<u>Substitute the value of y in Equation 1.</u>

x + 3.5 = 12
x = <u>8.5 hours [Maitri]</u>

<u>Substitute the value of y in Equation 2.</u>

3.5 + z = 15
z = <u>11.5 hours [Kavya]</u>

<u></u>

<u>Add the values of x, y, and z together.</u>

x + y + z
8.5 + 3.5 + 11.5
12 + 11.5
<u>23.5 hours [together]</u>

8 0

1 year ago

Descried how to derive the quadratic formula from a quadratic equation in standard form

Aleks [24]

Answer:

The standard form of a quadratic equation is:

$ax^2+bx+c=0$ , $a\neq 0$

Quadratic Formula Derivation:

$ax^2+bx+c=0\\$

$x^2+\frac{b}{a}x+\frac{c}{a} =0$

$x^2+\frac{b}{a}x = -\frac{c}{a}$

Completing the Square:

$x^2+\frac{b}{a}x +\frac{b^2}{4a^2} = \frac{b^2}{4a^2}-\frac{c}{a}$

$( x+\frac{b}{2a} )^2 = \frac{b^2-4ac}{4a^2}$

Square Root property:

$x+\frac{b}{2a} = \pm \sqrt{ \frac{b^2-4ac}{4a^2}}$

$x = -\frac{b}{2a} \pm { \frac{\sqrt {b^2-4ac}}{2a}}$

$x = \frac{-b\pm\sqrt{b^2-4ac}} {2a} }$

8 0

2 years ago

110$ for 16ft find the unit rate

Neporo4naja [7]

Answer:

6.875 dollars per feet

Step-by-step explanation:

110/16

6.875

8 0

2 years ago