MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer:

₹

Step-by-step explanation:

we know that

The simple interest formula is equal to

where

I is the amount interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

substitute in the formula above

MIDDLE SCHOOL

500 is 1/10 as much as 50

True

I'm not sure what ur asking but if it's T/F. there ya go

I'm not sure what ur asking but if it's T/F. there ya go

If it is true or false it is true

HIGH SCHOOL

Lin ride her bike 20 miles in 15 minutes. If she rode at constant speed what is the unit rate and how do you know ?

HIGH SCHOOL

Althea buys a carton of milk each day at school. The milk costs $0.90. How much does she spend on milk during a typical 5-day week? Justify your answer by using the distributive property?

$0.90×5 days=$4.50

Instead using distributive property

$0.90(3+2)=0.90×3 + 0.90×2

=2.7+1.8

=$4.50

Instead using distributive property

$0.90(3+2)=0.90×3 + 0.90×2

=2.7+1.8

=$4.50

HIGH SCHOOL

Solve for the equation for the interval [0, 2pi). sec x/2 = cos x/2

Sec(x/2) = 1/cos(x/2)

sec(x/2)=cos(x/2) ----> cos^2(x/2)=1 ---> cos(x/2) = -1 and cos(x/2) = 1

Cos(x/2)=1 --- > x/2 = 0, only. x = 0;

cos(x/2)=-1 ----> x/2 = pi -> x = 2pi. But the statement says [0,2pi), so 2pi can not be chosen.

Only x = 0.

In fact, your equation is equivalent to sec(x)=cos(x), for x in [ 0, pi), so yes, only x = 0 .

sec(x/2)=cos(x/2) ----> cos^2(x/2)=1 ---> cos(x/2) = -1 and cos(x/2) = 1

Cos(x/2)=1 --- > x/2 = 0, only. x = 0;

cos(x/2)=-1 ----> x/2 = pi -> x = 2pi. But the statement says [0,2pi), so 2pi can not be chosen.

Only x = 0.

In fact, your equation is equivalent to sec(x)=cos(x), for x in [ 0, pi), so yes, only x = 0 .