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goldenfox [79]
3 years ago
9

Which is the best first step when solving the following system of equations?

Mathematics
2 answers:
algol [13]3 years ago
8 0
-2 would be your answer




Hope it helps
Nezavi [6.7K]3 years ago
6 0

Answer:

multiply the second equation by - 2

Step-by-step explanation:

Given the 2 equations

5c + 4d = 10 → (1)

3c + 2d = 16 → (2)

Multiplying (2) by - 2 and adding to (1) will eliminate d

- 6c - 4d = - 32 → (3)

Add (1) and (3) term by term to eliminate d

- c + 0 = - 22

- c = - 22 ( multiply both sides by - 1 )

c = 22

Substitute c = 22 into either of the 2 equations and solve for d

Substituting into (2)

3(22) + 2d = 16

66 + 2d = 16 ( subtract 66 from both sides )

2d = - 50 ( divide both sides by 2 )

d = - 25

solution is c = 22, d = - 25

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How much interest will you have to pay for a credit card balance of $1,034 that is 1 month overdue, if a 17% annual rate is char
frosja888 [35]

Ans. Since the annual rate is not compunded (for example, compounded monthly) you will have to pay in interest $27.41, and the total payment is $1,061.41

Step-by-step explanation:

Hi, since the balance is 1 month overdue, it means that you owe 2 months of interest to this obligation, but before we start finding the interest of your credit card, first let´s find the effective monthly equivalent rate for that 17% annual interest rate.

The formula is as follows.

Therefore

So your monthly interest rate is 1.317%. Now let´s find the amount of interests that you have to pay for 2 months. This is the formula.

Where "n" is the period of time in months that you owe to the financial institution. The result of that is:

This way, interest are = $27.41 and the total amount that you will have to pay is:

<h2>Payment=Present Value+Interest=1,034+27.41=1,061.41 </h2>

8 0
3 years ago
Pls help i will get you 15 poins help me this plzzzzz
Gnom [1K]

Answer:

answer is 1 5/12 my sister said she did the quizz and helped me answer this

Step-by-step explanation:

have a good day!!

8 0
3 years ago
Read 2 more answers
QUESTIONS The average price of wheat per metric ton in 2012 was $30575. Demand in millions of metric tons) in 2012 was 672. The
soldi70 [24.7K]

Answer:<u> -0.9 ; inelastic</u>

Explanation:  

Given:

The average price of wheat per metric ton in 2012 = $305.75

Demand (in millions of metric tons) in 2012 = 672

The average price of wheat per metric ton in 2013 =  $291.56

Demand (in millions of metric tons) in 2013 = 700

We will compute the elasticity using the following formula:

ε = \frac{\frac{(Q_{2} - Q_{1})}{\frac{(Q_{2} +Q_{1})}{2}}}{\frac{(P_{2} - P_{1})}{\frac{(P_{2} +P_{1})}{2}}}

ε = \frac{\Delta Q}{\Delta P}

Now , we'll first compute  \Delta Q

i.e.  \frac{\Delta Q}{\Delta P} = \frac{(700 - 672)}{\frac{(700 +672)}{2}}

\Delta Q = 0.04081

Similarly for  \Delta P

i.e. \Delta P = \frac{(291.56 - 305.75)}{\frac{(261.56 +305.75)}{2}}

\Delta P = -0.0475

ε = \frac{0.04081}{-0.0475}

ε = -0.859 \simeq -0.9

\because we know that ;

If, ε > 1 ⇒ Elastic

ε < 1 ⇒ Inelastic

ε = 1 ⇒ unit elastic

<u><em>\because Here , ε = -0.859 \simeq -0.9 </em></u>

<u><em>Therefore ε is inelastic.</em></u>

6 0
4 years ago
40+30+10 in commutative property
Anika [276]

Answer:

10 + 40 + 30

Step-by-step explanation:

Commutative property states that the order in which we add numbers does not affect the answer, so we just need to change the order of numbers

Answered by Gauthmath

3 0
3 years ago
write 25/8 as whole or mixed number in simplest form and write 32/7 as whole or mixed number in simplest form 31/4 as whole or m
ioda

6 1/4 for 25/8

4 4/7 for 32/7

7 3/4 for 31/4

7 0
4 years ago
Read 2 more answers
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