Sera went to the mall and made four purchases. she spent $2.85,$5.11,$7.89and $4.15 use mental math to determine how much money sera spent at the mall

Sera spent $20 at the mall.

Step-by-step explanation:

Given:

Sera went to the mall and made four purchases.

She spent $2.85,$5.11,$7.89and $4.15.

Now, to determine the money Sera spent at the mall.

Sera made four purchases of:

$2.85,

$5.11,

$7.89,

$4.15.

Now, by adding we get the total money she spent:

Therefore, Sera spent $20 at the mall.

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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