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motikmotik
3 years ago
7

Kevin and Randy Muise have a jar containing 53 coins, all of which are either quarters or nickels. The total value of the coins

in the jar is $10.25. How many of each type of coin do they have?
The jar contains ____ quarters.
The jar contains ____ nickels.
Mathematics
1 answer:
lilavasa [31]3 years ago
8 0
So here is how you'll get the answer.
Let x be the number of quarters in the jar. 
Then 53-x is the number of nickels in the jar. 
<span>We also know .25x + 0.05 (53-x) = 10.25
</span>So next, we solve for x.
.25x + 2.65 - 0.05x = 10.25
0.2x +2.65 = 10.25
0.2x = 10.25 -2.65
0.2x = 7.40
x =37
Therefore, there are 37 quarters in the jar.
53-37 is 16. So there are 16 nickels in the jar.
Hope this answer helps.
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What is the volume in cubic meters of 18 MM
9966 [12]
1944 mm Please mark as brainliest if im correct
3 0
3 years ago
How many solutions does the equation below have? 1/(-6-8x) = -3- 1x​
uranmaximum [27]

Answer:

This equation has 2 solutions.

1. x=\frac{-15+\sqrt{89}}{8}

2. x=-\frac{15+\sqrt{89}}{8}

5 0
1 year ago
X-2y=18 2x+y=6 parallel perpendicular or neither
sergey [27]
<h3>Therefore they are perpendicular.</h3>

Step-by-step explanation:

A equation of line is

y =mx +c

Here the slope of the line is m.

Given equations are

x - 2y = 18

⇔-2y = -x +18

\Leftrightarrow y =\frac{1}{2} x -9............(1)

and 2x + y = 6

⇔y = -2x +6 ............(2)

Therefore the slope of equation (1) is(m_1)= \frac{1}{2}

Therefore the slope of equation (2) is(m_2)= -2

If two lines are perpendicular, when we multiply their slope we get -1.

therefore,

m_1. m_2 =\frac{1}{2}. (-2) = -1

Therefore they are perpendicular.

4 0
2 years ago
Determine the number of possible triangles, ABC, that can be formed given angle A = 30°, a = 4, and b = 6.
Sophie [7]

Answer:

Step-by-step explanation:

Alright, lets get started.

using Sine Law,

\frac{sinA}{a}=\frac{sinB}{b}

\frac{sin30}{4}=\frac{sinB}{6}

sinB=0.75

angle B = 48.6

Another angle will be

angle B' = 180-48.6 = 131.4

considering angle B, angle C = 180 - (48.6+30)=101.4

considering angle B', angle C' = 180-(131.4+30)=18.6

\frac{sinA}{a}=\frac{sinC}{c}

\frac{sin30}{4}=\frac{sin101.4}{c}

c = 7.84

Similarly, finding c'

\frac{sinA}{a}=\frac{sinC'}{c'}

\frac{sin30}{4}=\frac{sin18.6}{c'}

c'=2.55

Hence two triangles are possible with below details:  :   Answer

A = 30, B = 48.6, C = 101.4, c = 7.84

A = 30, B' = 131.4, C' = 18.6, c' = 2.55

Hope it will help :)

5 0
2 years ago
Pls help i dont understand :( will give Brainliest + 25 Points
umka21 [38]
It’s D. 4 is the one next to X because that’s what is changing and -3 is the y intercept which comes after X
3 0
3 years ago
Read 2 more answers
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