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3 years ago

9

(5x + 7)(5x – 7) Foil method

1 answer:

Pavlova-9 [17]3 years ago

6 0

Answer:

25x-49

Step-by-step explanation:

5x×5x=25x 5x×-7= -35x

7×5x=35x 7×-7=-49

(combine like terms)25x+-35x+35x= 25

hope that helped you!

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The solution set of 2-3x/4-8=3x/4

deff fn [24]

Step-by-step explanation:

$\\ \tt{:}\leadsto \frac{2 - 3x}{4 - 8} = \frac{3x}{4} \\ \\ \tt{:}\leadsto 4(2 - 3x) = 3x(4 - 8) \\ \\ \tt{:}\leadsto 8 - 12x = 3x( - 4) \\ \\ \tt{:}\leadsto 8 - 2x = - 12x \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt{:}\leadsto 8 = - 12x + 2x \\ \\ \tt{:}\leadsto 8 = - 10x \\ \\ \tt{:}\leadsto x = \frac{ - 10}{8} \\ \\ \tt{:}\leadsto x = \frac{ - 5}{4}$

6 0

2 years ago

Read 2 more answers

I need help with geometry

swat32

Answer:

6m

Step-by-step explanation:

Set up a proportion:

x/1.5=10/2.5

Cross multiply:

15/2.5=2.5x/2.5

x=6

The palm tree is 6m tall.

Hope this helps!

7 0

2 years ago

PLS TO GOD HELP ME I GOTTA GET ALL OF THIS TURNED IN BY 11:59 IM PANICKING AND TIRED!!!!

nirvana33 [79]

It might be the first one or the second one. i said MIGHT!!

6 0

2 years ago

3.4=21 2.5=7. 4.4=؟

Licemer1 [7]

Answer:

32

Step-by-step explanation:

From the given values

The possible logic could be

if x.y is given

then it is equal to $=\frac{(x+y)\times x}{y-3}$

For 1st example

3.4 $=\frac{(3+4) \times 3}{4-3} =\frac{21}{1} =21$

For 2nd example

2.5 $=\frac{(2+5) \times 2}{5-3} =\frac{7 \times 2}{2} =7$

⇒4.4 $=\frac{(4+4)\times 4}{4-3} =32$

4 0

3 years ago

You earn $28 for washing 4 cars. How much do you earn for washing 3 cars?

a_sh-v [17]

Answer:

21 dollars

Step-by-step explanation:

8 0

3 years ago

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