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bezimeni [28]
3 years ago
8

Roberto has eight coins that are all dimes or nickels. They are worth $0.50. How many dimes and how many nickels does Roberto ha

ve? Equation 1:. Equation 2:
solution:

please help️​
Mathematics
1 answer:
natita [175]3 years ago
7 0

Answer: Roberto has 2 DIMES and 6 NICKELS.

Step-by-step explanation:

<em><u>Equation 1:</u></em> 2 * 10 = 20 cents (Dimes)

<em><u>Equation 2:</u></em> 6 * 5 = 30 cents (Nickels)

<em> </em><u><em>Solution:</em></u><em> </em>30 + 20 = 50 cents

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Write an expression that shows how to multiply 4×362 using place value and expanded form
Elodia [21]
Separate this into, instead of 4*362, 4*300+4*60+4*2, all of which are much easier to solve than the former problem.
4*300=1200
4*60=240
4*2=8
Add these together now!
1200+240+8=1448

Hope this helps!
6 0
3 years ago
What is the solution of the system? use a graph. check your answer. y=2x+4, y=x+2​
vladimir1956 [14]

Answer:

see picture with work shown

4 0
3 years ago
A line passes through the points (2,4) and (-4,-1). Find its equation in slope-intercept form. (2 points, 1 for work, 1 for equa
vovangra [49]
<h2>Hello!</h2>

The answer is:

The equation of the line in slope-intercept form:

y=\frac{5}{6}x+\frac{7}{3}

<h2>Why?</h2>

To find the equation in slope-intercept form, we need to follow the next steps:

Find the slope of the line:

Using the slope formula, we have:

m=\frac{y_2-y_1}{x_2-x_1}

We are given the points:

(2,4)\\(-4,-1)

So, substituting we have:

m=\frac{(-1)-(4)}{-4-2}

m=\frac{-5}{-6}

m=\frac{5}{6}

Find the "b" value:

Now that we know the value of the slope, we can write the equation of the line:

y=\frac{5}{6}x+b

In order to find "b" we need to substituite any of the given points, we know that line is thru both of the given points, so, substituting (2,4) we have:

4=\frac{5}{6}*2+b\\\\4=\frac{10}{6}+b\\\\4=\frac{5}{3}+b\\\\b=4-\frac{5}{3}=\frac{(3*4)-5}3}=\frac{12-5}{3}=\frac{7}{3}

Now that we know the slope and "b", we can write the equation of the line in slope-intercept form:

y=\frac{5}{6}x+\frac{7}{3}

Have a nice day!

5 0
3 years ago
A right triangle is inscribed in a circle as shown. What is the area of the shaded region. Diameter of 12 and 9 cm in triangle
Ksivusya [100]

Answer:

36\pi -18\sqrt{7}

Step-by-step explanation:

Every inscribed right triangle has its hypotenuse as the same size of the Diameter. Assuming that, this is the case check the picture below.

So the hypotenuse= D=2R=12

  1. Shaded Area = Area of the Circle- Area of the Triangle
  • Area of Circle:

A_{circle}=\pi (6)^{2}=36\pi

  • Area of the Triangle:

Finding the Triangle base via the Pythagorean Theorem

a^2=b^2+c^2\\12^2=9^2+c^2\\144-81=c^2\\c=\sqrt{63}\\c=3\sqrt{7}\approx 7.94

Now plugging in the base of the triangle on that formula:

A=\frac{bh}{2}\\A=\frac{3\sqrt{7}*12}{2}\\A=18\sqrt{7}

Finally,

Shaded Area = 36\pi -18\sqrt{7} cm^{2} \approx 65.48 cm^{2}

3 0
3 years ago
HELPPPPPP PLSSSSSSS !!!
Kruka [31]

Answer:

I dont know what shape we are making but fi we were making an isosolece triangle the coordinates would be (8,1)

Step-by-step explanation:

4 0
4 years ago
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