2 years ago

PLS HELP!!! I WILL GIVE THE FIRST GOOD ANSWER BRAINLIEST!!!

Mathematics

1 answer:

Nutka1998 [239]2 years ago

8 0

미안 해요 영어를 잘 못해요 sorry I can't help

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Plz..... Solve this questions for me...

faust18 [17]

$6.\\\text{We know}\ 9=3^2.\ \text{Therefore}\\\\9^2=(3^2)^2\\\\\text{use}\ (a^n)^m=a^{nm}\\\\9^2=(3^2)^2=3^{2\cdot2}=3^4\\\\\boxed{3^4=9^2}\\=================$

$7.\\METHOD\ 1:\\\\\sqrt{7^4}=\sqrt{7^{2\cdot2}}\\\\\text{use}\ (a^n)^m=a^{nm}\\\\=\sqrt{(7^2)^2}\\\\\text{use}\ \sqrt{a^2}=a\ \text{for}\ a\geq0\\\\=\boxed{7^2}\\\\METHOD\ 2:\\\\\text{use}\ a^\frac{m}{n}=\sqrt[n]{a^m}\\\\\sqrt{7^4}=7^\frac{4}{2}=\boxed{7^2}\\=================$

$8.\\5^a\times5^b=5^{11}\\\\a)\\\text{use}\ a^n\times a^m=a^{n+m}\\\\5^a\times5^b=5^{a+b}\\\\5^{a+b}=5^{11}\Rightarrow a+b=11\\\\11\ \text{is odd. The sum of even and odd is odd. Therefore}\ a\ \text{and}\ b\ \text{can't be even.}\\--------------------\\\\b)\\5\ \text{solutions}\\\\11=5+6\\11=4+7\\11=3+8\\11=2+9\\11=1+10$

3 0

2 years ago

A firework is launched from the ground at a velocity of 180 feet per second. its height after t (t is variable) seconds is given

VMariaS [17]

-16t² + 180t

-16(2)² + 180(2)

-64 + 360

The fireworks height after 2 seconds is 296 feet

7 0

2 years ago

An 11-inch string is cut into 3 equal pieces. Which expression shows the length of each piece?

notka56 [123]

Answer:

A. 11/3

Step-by-step explanation:

11/3 is saying 11 dived by 3, and in the short story the 11-inch string is being cut (divide) into 3 parts.

Hope this helped!

5 0

3 years ago

Read 2 more answers

at fish world,clownfish are on sale for $5 off with a maximum of 6 fish per customer. Rudy buys 6 clownfish on sale plus 3 more

ICE Princess25 [194]

I’m sorry but I don’t know i would honestly like to help u but don’t know

6 0

3 years ago

Someone help pls -……

uysha [10]

Answer:

d) 35ft

e) 6 seconds

f) 250°

Step-by-step explanation:

If it makes one rotation (360°) in 36 seconds, then it turns 10° every second.

36 secs = 360°

⇒ 1 sec = 360/36 = 10°

d) After 9 seconds, it has turned:

9 x 10 = 90°

Therefore, it will be 15 + 20 = 35ft from the wall

e) 60° = 6 seconds

f) 25 seconds = 25 x 10 = 250°

8 0

2 years ago