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Anastaziya [24]
2 years ago
6

5(-42/-7) + (-15) - (-3)​

Mathematics
1 answer:
siniylev [52]2 years ago
8 0

Answer:

2058

Step-by-step explanation:

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4 2/5 - 1 7/10<br> 2 3/10<br> 2 7/10<br> 3 1/10<br> 2 9/10
elena-s [515]
<span>4 2/5 - 1 7/10
= </span><span>4 4/10 - 1 7/10
= 3</span> 14/10 - 1 7/10
= 2 7/10

answer
<span>2 7/10</span>
3 0
3 years ago
Read 2 more answers
Mary has a collection of nickels and quarters for a total of $4.90. If she has 42 coins in total, how many of each kind are ther
damaskus [11]

Answer:

14 quarters and 28 nickels

Step-by-step explanation:

System of Equations where x = number of quarters and y = number of nickels

(1) equation with value of each coin

    0.25(x)+0.05(y) = 4.90

(2) total number of coins

    x + y = 42

Solve system of equations using either substitution or elimination

(elimination multiplying equation 2 by -0.5)

.25(x) + 0.05(y) = 4.90

-0.05(x) - 0.05(y) = 42 * (-0.05)

(3) Resulting equation

.20(x) = 2.8

x = 14

plug x into equation 2

14 + y = 42

y = 28

There are 14 quarters and 28 nickels in Mary's collection.

5 0
3 years ago
Coefficient What is the coefficient in the equations 8 = 2y + 3 ​
miskamm [114]
2 is the coefficient. Y is 2.5
8 0
3 years ago
Multiplication and division word problems
zubka84 [21]

Answer:

just divide 228 and 6

Step-by-step explanation:

228 divided by 6 is 76

8 0
2 years ago
System of equations- does this have one solution, many solutions or no solution
Alla [95]

Answer:

One solution

Step-by-step explanation:

Let's rewrite y = 6 - 3x as y = -3x + 6

Looking at these two equations, we can see they share a y-intercept

Making our solution 6

We know there is only one solution because the equations are not the exact same, if they were we'd have infinitely many solutions

We also know there aren't no solutions because the lines are not parallel (same slopes with difference y-intercepts)

Best of luck

3 0
2 years ago
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