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3 years ago

What is the answer too this (3x+3)(x+4)

1 answer:

7 0

=3x2+15x+12 you can solve this using an algebra calculator

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Joan loves eating fruits. Joan paid $14.20 for apples, and $7.86 for cherries with two $20 bills. How much change did Joan recei

Inga [223]

Joan received $17 and 94 cents ($17.94)

$14.20 + $7.86= $22.06 (her total)

$20+$20= $40 (how much she paid with)

$40- $22.06= $17.94

5 0

3 years ago

Read 2 more answers

The sum of three integers is 12

Liula [17]

The three integers are 5,17 and -10

Step-by-step explanation:

Let x, y and z be three integers then

$x+y+z=12 \ \ \Eqn\ 1$

'The sum of the first and second integers exceeds the third by 32'

$x+y=z+32\ \ \ \ Eqn\ 2$

The third integer is 15 less than the first.

$z=x-15\ \ \ \ Eqn\ 3$

From Eqn 2:

$x+y=z + 32\\x+y-z=32$

Subtracting Eqn 1 from eqn 2

$x+y-z-(x+y+z)=32-12\\x+y-z-x-y-z=20\\-2z=20$

Dividing both sides by -2

$\frac{-2z}{-2}=\frac{20}{-2}\\z=-10$

Putting z=-10 in Eqn 3

$z=x-15\\-10=x-15\\x=15-10\\x=5$

Putting x=5 and z=-10 in Eqn 1

$x+y+z=12\\5+y-10=12\\y-5=12\\y=12+5\\y=17\\$

Hence,

The three integers are 5,17 and -10

Keywords: Linear Equations, Variables

Learn more about linear equations at:

#LearnwithBrainly

3 0

3 years ago

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Find c. Round to the nearest tenth:

emmainna [20.7K]

Answer:

c=56.3

Step-by-step explanation:

Sorry for the bad writing and diagram haha

7 0

3 years ago

Sin30=cos(2x) then x=

Paraphin [41]

Answer:

x = 30.

Step-by-step explanation:

Use the identity sin A = cos (90 - A).

So sin 30 = cos (90 - 30) = cos 60.

cos 2x = cos 60

so x = 30.

8 0

3 years ago

Simplest form 7/8 - 1/6

Tresset [83]

Answer:

17/24

Step-by-step explanation:

hope this helped:)

4 0

3 years ago

Read 2 more answers