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ch4aika [34]
3 years ago
11

A mom bought her kids 3 cartons of milk for $1.25 each and 6 donuts. The total cost was $6.90. Write an equation to determine th

e cost of a donut.
Mathematics
2 answers:
bogdanovich [222]3 years ago
7 0
6.90 - (1.25 * 3)
answer / 3

Hope it helps!
max2010maxim [7]3 years ago
6 0

$6.90 = 6d - ($1.25 x 3)

Donuts = d

I hope I helped

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HELP!! The measure of two supplementary angles are in the ratio 4:2. Find the two angles.
Colt1911 [192]

Hey there!

<u><em>Supplementary angles</em></u> always equal 180° when combined. We have our ratio which is 4:2. When we combine them, we have six. This is on a different scale than 180, so we need to divide 180 by six to see how much bigger we need to make our ratio so we can find the angles.

180/6=30

As we can see, our parts of the ratio are 1/30 the size of our actual angle. To find our angles now, we multiply each number by 30.

4(30):2(30)=120:60

As you can see, if we add 120 and 60, it equals 80, and if you simplify the ratio it is still 4:2.

Your angles are 120° and 60°.

I hope this helps!

8 0
3 years ago
Write your answer in the form y=mx+b
zaharov [31]

Answer:

y = 9x-8

Step-by-step explanation:

Find y values for x= -3 and x = 3. These will come out to -35 and 19 respectively.

Plug these numbers into the rise/run equation for slope m (y2-y1)/ (x2-x1). Plugging values in and simplifying you will get 54/6, which reduces to 9. This is your m value.

Apply your m value to x = 3 going backwards (x = 2 gives a y value of 10, 1 gives 1, and 0 gives -8). This will give you a y intercept of -8. This is your b value.

Plug the slope and y intercept into the mx + b equation. This will give you   y = 9x-8.

There you go!

3 0
3 years ago
Taco meat costs $5.36 for 2O oz. How much will you pay per ounce for taco meat?
MatroZZZ [7]
Taco meat is .268 cents per oz

$5.36/20 = .268
4 0
3 years ago
The sun casts a 70 foot shadow on a 30 foot tree. Find the angle of elevation to the nearest degree.
Nesterboy [21]

Answer:

23°

Step-by-step explanation:

We apply Pythagorean theorem to determine the missing length, Hypotenuse:

h^2+b^2=H^2\\\\70^2+30^2=H^2\\\\H=\sqrt{5800}\\\\=76.15773\ ft

This hypotenuse corresponds to the right triangle and the tree's height, corresponds to the angle of elevation:

-We apply the law of Sines;

\frac{a}{Sin \ A}=\frac{b}{Sin\ B}\\\\\\\frac{76.15773}{Sin \ 90}=\frac{30}{Sin\  h}\\\\h=Sin^{-1}\frac{30}{76.15773}\\\\=23.19859\approx 23\textdegree

Hence, the angle of elevation is 23°

8 0
3 years ago
Help will give brainiest if right plzzzzzzzzzzz<br><br><br><br> NO LINKS
hammer [34]

Answer:

1.     x >= 5

2.    x > -8

3.    x <  4

4.    x <= 8

Step-by-step explanation:

3 0
3 years ago
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