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crimeas [40]
3 years ago
15

Pleaseeeehow can I do it??

Mathematics
1 answer:
Otrada [13]3 years ago
3 0
7^x+49^{ \frac{x}{2} }=2\cdot  \sqrt[5]{343} \\  \\  7^x+(7^2)^{ \frac{x}{2} }=2\cdot  \sqrt[5]{7^3} \\  \\7^x+ 7^x=2\cdot 7^{ \frac{3}{5} }  \\\\ 2 \cdot 7^x=2\cdot 7^{ \frac{3}{5} } \ \ \ | \div2 \\  \\ 7^x=7^{ \frac{3}{5} }  \\  \\ x= \frac{3}{5}
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I need help completing this problem ASAP
prisoha [69]

Answer:

4\sqrt{5}

Step-by-step explanation:

Prime factorize 20 and 45

\sqrt{20}=\sqrt{2*2*5}=2\sqrt{5}\\\\\\\sqrt{45}= \sqrt{5*3*3}=3\sqrt{5}

\sqrt{20}-\sqrt{5}+\sqrt{45}=2\sqrt{5}-\sqrt{5}+3\sqrt{5}

                           =(2-1+3)\sqrt{5}\\\\\\= 4\sqrt{5}\\

4 0
3 years ago
3.2 geometry worksheet
alekssr [168]

Answer/Step-by-step explanation:

5. 21x + 4 = 22x - 2 (corresponding angles)

Collect like terms

21x - 22x = -4 - 2

-x = -6

divide both sides by -1

x = 6

6. (x + 72) + (x + 132) = 180 (linear pair)

x + 72 + x + 132 = 180

Add like terms

2x + 204 = 180

2x = 180 - 204

2x = -24

x = -12

7. 90 = 22x + 2 (vertical angles)

90 - 2 = 22x

88 = 22x

Divide both sides by 22

4 = x

x = 4

8. 12x + 10 = 13x + 3 (vertical angles)

Collect like terms

12x - 13x = -10 + 3

-x = -7

Divide both sides by -1

x = 7

9. 17x = 16x + 5 (alternate exterior angles)

17x - 16x = 5

x = 5

✔️17x

Plug in the value of x

17(5) = 85°

10. 21x - 6 = 20x (corresponding angles)

Add like terms

21x - 20x = 6

x = 6

✔️20x

20(6) = 120°

3 0
3 years ago
CAN SOMEONE PLS HELP ME!!!
Shkiper50 [21]

Answer:

14

Step-by-step explanation:

trust me.

8 0
3 years ago
Read 2 more answers
If the original price is $55 and the sale price is $46.75 what is the discount?
Ugo [173]
55-46.75= 9.25
the sales discount is $9.25
7 0
3 years ago
How many hundredths are in 445699.38
svlad2 [7]
2 hundreds or 3 i think
5 0
4 years ago
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