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drek231 [11]
3 years ago
12

I don’t get this question so can someone please help.!

Mathematics
1 answer:
Svetllana [295]3 years ago
3 0
The answer is B,
see explanation in the attached picture

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Miguel has a total of 27 dimes and nickels. The total value of the coins is $1.80. How many dimes and nickels does he have?
soldi70 [24.7K]

Answer:

There are 9 dimes and 18 nickels.

Step-by-step explanation:

Let d = be the number of dimes

 

     n = be the number of nickels

 

 

    d + n = 27...eq.1

 

   0.10d + 0.05n = 1.80...eq.2

 

Solve the system of equations

 

   d + n = 27

 

10d + 5n = 180  ( multiply eq.2 by 100 )

 

 -5d - 5n = -135

 

      5d = 45

 

       

        d = 9 , there are 9 dimes so,0.90

 

        n = 27 - 9 = 18,   there are 18 nickels so, 0.90

 

To check:   9 dimes + 18 nickels = 27 coins

 

                0.90 + 0.90 = $ 1.80 total value of the coins

5 0
3 years ago
Please help me before 12 noon today.​
masha68 [24]
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8 0
3 years ago
What's the slope-intercept form that passes through the points (0, -1) and (1, 5)?
Rzqust [24]

Answer:

<h2>         y = 6x - 1</h2>

Step-by-step explanation:

\bold{slope\, (m)=\dfrac{change\ in\ Y}{change\ in\ X}=\dfrac{y_2-y_1}{x_2-x_1}}

(0, -1)    ⇒     x₁ = 0,  y₁ = -1

(1, 5)     ⇒     x₂ = 1,  y₂ = 5

So the slope:

                     \bold{m=\dfrac{5+1}{1-0}=\dfrac{6}{1}=6}

The slope-intercept form of the equation of line is y = mx + b, where m is the slope and b is the y-intercept of the line.

(0, -1)    ⇒     x₀ = 0,  y₀ = -1      ⇒   b = -1

Therefore:

                 y = 6x - 1          ←  the slope-intercept form of the equation

5 0
3 years ago
Driving 65 mph, it takes Alicia 2 hours to reach the airport to go on vacation. It then takers her 2 hours to get to her destina
GenaCL600 [577]
Around 765 miles is my guess.
8 0
3 years ago
Read 2 more answers
A parachutist's rate during a free fall reaches 165 feet per second. What is this rate in meters per second? At this rate, how m
Fiesta28 [93]
Assuming that:

1
m
=
3.3
f
t
1m=3.3ft

We can make the conversion from feet per second to meters per second with this procedure:

(
165

f
t
s
)
(
1

m
3.3

f
t
)
=
50

m
s
(165
s
ft
​
)(
3.3 ft
1 m
​
)=50
s
m
​

​
Let
x
x be the amount of meters the parachutist will fall during 15 seconds of free fall

Having that in 1 second the parachutist falls 50 meters, we can calculate
x
x :

x
=
(
50

m
s
)
(
15

s
)
​
x=(50
s
m
​
)(15 s)​


x=750 m
​
3 0
3 years ago
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