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3 years ago

Solve this system of equations using the substitution method. If the system of equations

Mathematics

1 answer:

sleet_krkn [62]3 years ago

3 0

Answer:

well i dont really get ehat yours saying but the qustions are

3x+y=5

3^1+1=5

and then

4z+2y=20

i think

4^6+2^6=20

Step-by-step explanation:

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Type the expression that results from the following series of steps

Naddika [18.5K]

Answer:

(y-d) × a + c

Step-by-step explanation:

You start with y:

subtract d:

y-d

multiply by a:

(y-d) × a

then add c:

(y-d) × a + c

Hope that helps! :)

5 0

2 years ago

Pls help its not for me but could you still help my brother?

sasho [114]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

I need help on this question

Margaret [11]

500(.25)=125 is the answer

8 0

3 years ago

Write the numbers in scientific notation.

Rasek [7]

Answer:

8)5.1*10⁶

9)6.98*10 to the power of -6

10) 3.000052*10⁰

11)0.006548

3 0

3 years ago

1. Jane saved up 20 coins, all nickels and

kompoz [17]

Answer:

10 nickels and 10 quarters

Step-by-step explanation:

Given

Number of coins: 20

Vaiue of coins = $3.00

Required

Number of Nickels and Quarters;

<em>Let N =Nickels and Q =Quarters</em>

The total coins is represented as:

$N + Q = 20$

1 nickel is equivalent to $0.05 and 1 quarter is equivalent to $0.25; So

$0.05N + 0.25Q = 3$

Make N the subject of formula in the first equation

$N = 20 - Q$

Substitute this in the second equation

$0.05(20 - Q) + 0.25Q = 3$

$1 - 0.05Q + 0.25Q = 3$

Collect like terms

$-0.05Q + 0.25Q = 3 - 1$

$0.2Q = 2$

Multiply both sides by 5

$5 * 0.2Q = 2 * 5$

$Q = 10$

Recall that N = 20 - Q

$N = 20 - 10$

$N = 10$

6 0

3 years ago