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3 years ago

Round to the nearest tenth of a percent $89.54 ÷ $133.78

Mathematics

1 answer:

Verdich [7]3 years ago

7 0

I used math and got

.00

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Need some help with these problems!

LekaFEV [45]

Answer:

h=12, w=24, t=8

Step-by-step explanation:

System of Linear Equations

We have 3 unknown variables and 3 conditions between them. They form a set of 3 equations with 3 variables.

We have the following data, being

w = price of a sweatshirt

t = price of a T-shirt

h = price of a pair of shorts

19.

The first condition states the price of a sweatshirt is twice the price of a pair of shorts. We can write it as

$\displaystyle w=2h$

The second condition states the price of a T-shirt is $4 less than the price of a pair of shorts. We can write it as

$\displaystyle t=h-4$

The final condition states Brad purchased 3 sweatshirts, 2 pairs of shorts, and 5 T-shirts for $136, thus

$\displaystyle 3w+2h+5t=136$

This is the system of equations we need to solve for w,t,h

20.

To solve the system, we replace w in terms of h and t in terms of h. Those relations have been already written, so

$\displaystyle 3(2h)+2h+5(h-4)=136$

Operating

$\displaystyle 6h+2h+5h-20=136$

$\displaystyle 13h=156$

Solving for h

$\displaystyle h=12$

The other two variables are

$\displaystyle w=2h=24$

$\displaystyle t=12-4=8$

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3 years ago

Evaluate the principal square root of 64

anygoal [31]

The square root of 64 is 8 because 8x8 is 64

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balandron [24]

p(80+60)=560

p(140)=560

560/140 = 4 hours

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3 years ago

When written in scientific notation, the number 4,500 will have a Choose... 2 4 3 as the exponent on the power of ten

nexus9112 [7]

The exponent would be 3.
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∠1+∠2=90°

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3 years ago

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