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valentina_108 [34]
3 years ago
5

I need help with this and pleases explain this its due today

Mathematics
2 answers:
Gwar [14]3 years ago
7 0

Answer:

1. x= 20/3 or 6.6666 repeating

2. x=3

3. a=39

Step-by-step explanation:

1. subtract 25 by 5 to get 20, then divide 20 by 3 to get x

2. divide 7 by 21 to get x

3. add 8 to 31 to get a equals 39

kolbaska11 [484]3 years ago
5 0

Answer:

x = 6.6 repeating 7

Step-by-step explanation:

subtract 5 on both sides

ur left with 3x = 20

divide by 3 on both sides

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100 is 20% of what number?
Rus_ich [418]

Answer:

500

20%=100

100%= 5×100=500 (cause 100 is 20%, and in 100% is five 20% so...)

8 0
4 years ago
Which is the graph of the function f(x) = one-halfx2 + 2x – 6?
guapka [62]

Answer:

1/2 x^2 + 2x - 6 = 0

(1/2 x - 1)(x + 6) = 0

zeroes are 2 and -6

so the graph intersects x axis at -6 and 2  

The only one to do that is diagram A  

Step-by-step explanation:

5 0
3 years ago
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Find the circumference and area of each. Round to nearest tenth:
patriot [66]

№1. Given: r=8 ft, π≈3.14

C=2×π×r=2×3.14×8=50.24=50.2 ft

A=π×r²=3.14×64=200.96=201 ft²

Answer: 50.2 ft; 201 ft²

№2. Given: D=11 cm, π≈3.14

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C=2×π×r=πD=3.14×11=34.54=34.5 cm

A=π×r²=3.14×(5.5)²=94.985=95 cm²

Answer: 34.5 cm; 95 cm²

8 0
3 years ago
Please help me!!! Select all of the equations for which the solution is 20. A) n-4 B) 10n=20 C) n/5=4 D)7+n=13 Please wander imm
Cerrena [4.2K]
I'm guessing it is C because after you solve for n (you need to multiply the five over to isolate n), you get 20.
8 0
3 years ago
Edwin has $2,325.35 he divided put 2/5 into his bank account how much does he have left for his checking account
alexandr402 [8]
Find \ \frac{1}{5} \ of \ \$2,325.35
\\\ 2325.35/5 = 465.07
\\\ 465.07*2 = 930.14
\\\  2325.35- 930.14 = 1395.21
\\\ \boxed{1395.21}
7 0
3 years ago
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