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3 years ago

Please hellllllllppppppppppppppppppppppppppp

Mathematics

1 answer:

vitfil [10]3 years ago

5 0

Answer:

$21^{10}$

Step-by-step explanation:

First, multiply the 3 and the 7 together, and then "multiply" the exponents -8 and 3. (However, when "multiplying exponents, you're really just adding them together: -8 + 5)

( $21^{-5}$ )^2

Then, multiply the -5 and -2 together, giving you:

$21^{10}$

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PLZ PLZ❓❓❓HELP

Liula [17]

Answer:

22.36

Step-by-step explanation:

20*.86=17.2

12 *.43= 5.16

5 0

3 years ago

PLEASE HELP ME!!! Ms. Jones wants to install a stone border along the flower bed in her rectangular backyard. Which is closest t

Nataly_w [17]

Answer:

use Pythagoras theorem formula $C^{2}$ = $A^{2}$ + $B^{2}$

Step-by-step explanation:

$C^{2}$ = $24^{2}$ + $18^{2}$

$C^{2}$ = 576 + 324

$C^{2}$ = 900

C = $\sqrt{900}$

C = 30

Does that make sense? :|

3 0

3 years ago

Justin deposited $2,000 into an account 5 years ago. Simple interest was paid on the account. He has just withdrawn $2,876. What

RSB [31]

Answer: 8.76%

Step-by-step explanation:

The formula to find the simple interest is given by :-

$I=Prt$ , where P is the principal amount, r is rate of interest () in decimal and t is the time ( in years). (1)

Given : Justin deposited $2,000 into an account 5 years ago.

i.e. P = $2,000 , t= 5 years

He has just withdrawn $2,876. i.e. Future value = $2,876

Interest (I)=$2,876-$2,000=$876 [Subtract Principal value from Future value]

Substitute all the above values of P , t , and I in the formula (1) , we get

$876 =(2000)r(5)\\\\\Rightarrow\ r=\dfrac{876 }{2000\times5}\\\\\Rightarrow r=\dfrac{876}{10000}=0.0876$

In percent , $r=0.0876\times100=8.76\%$

Hence, the rate of interest = 8.76%

6 0

3 years ago

Graph the equation.<br><br> X squared plus y squared equals 9

BartSMP [9]

Answer:

Step-by-step explanation:

This graph is a circle. The general equation for a circle is x² + y² = r², where r is the radius. In this case, the radius is 3 because √9 = 3. Also, the center is (0,0) because the circle is not translated. Therefore, the graph is a circle with center (0,0) and radius 3. If you still need help, the y-intercepts are (0,±3) and the x-intercepts are (±3,0). Hope this makes sense!

7 0

2 years ago

Read 2 more answers

9 + 2r = 21.2 What does r equal?

LenaWriter [7]

R=6.1 Hope this helps

7 0

3 years ago