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lutik1710 [3]
2 years ago
13

Every weekend, jaylon downloads interesting music on his phone from an app. He downloads 15 songs at $1.99 and 7 songs at $2.50.

Write and simplify an expression to represent the cost of downloading the music.
Mathematics
1 answer:
butalik [34]2 years ago
6 0

Answer:

15*1.99

7*2.50

Step-by-step explanation:

I think you would multiply them (im not sure im not very good with math if its wrong im really sorry hope you get it though good luck :) ! )

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Please help me :(
Tanzania [10]

We can solve this problem by correctly analyzing the location of the points.

If the center of rotation is a point outside the triangle, then this would mean that there would be quadrant shift (revolution) of the whole triangle itself. Hence this would mean that the resulting triangle will not touch the pre-image at any point at all.

If the center of rotation is a point on the perimeter of the triangle, this would also result in a quadrant shift (revolution) or movement of the triangle.

Now if the center of rotation is a point inside the triangle, then this would be a simple rotation on its own quadrant hence the resulting image will touch the pre-image at more than one point. Hence the correct points are:

<span>point D and point E</span>

8 0
2 years ago
One factor of mc018-1.jpg is (x + 7). What are all the roots of the function? Use the Remainder Theorem.
mezya [45]
One factor of f(x) = 5x³ + 5x² - 170x + 280 is (x + 7). What are all the roots of the function? Use The Remainder <span>Theorem
</span>

<span>Solution:
</span>
<span><span>The </span>all roots of the function ⇒⇒⇒ -7 , 2 and 4
</span><span>
</span><span>See the attached figure for the detailed solution.
</span>

3 0
2 years ago
Read 2 more answers
Which congruence theorem can be used to prove △BDA ≅ △DBC? Triangles B D A and D B C share side D B. Angles C B D and A D B are
Tomtit [17]

Answer:

A. Hypotenuse-leg (HL) congruence.

HL, when you have 2 right triangles and their hypotenuses are congruent you are able to say HL

Step-by-step explanation:

We know that the hypotenuse-leg theorem states that if the hypotenuse and one leg of a right triangle are congruent to hypotenuse and corresponding leg of another right triangle, then the triangles are congruent.  

hypotenuse(AB) of △BDA equals to hypotenuse (CD) of △DBC.  

BDA and DBC share a common side DB.

Using Pythagorean theorem we will get,

CD^{2}=DB^{2}+BC^{2}...(1)  \\\\AB^{2}=DB^{2}+AD^{2}...(2)

We have been given that CD=AB, Upon using this information we will get,

DB^{2}+BC^{2}=DB^{2}+AD^{2}

Upon subtracting DB^{2} from both sides of our equation we will get,

BC^{2}=AD^{2}\\\\BC=AD

<h3>Therefore, by HL congruence △BDA ≅ △DBC.</h3>
6 0
2 years ago
Read 2 more answers
Round 44677 to the nearest thousand
erma4kov [3.2K]

Answer:

45000

Step-by-step explanation:

7 0
2 years ago
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If mAC 178°, and mBC= 42°, what is m∠BDC? 110° 65° 68° 136°
Viktor [21]
<span>m∠BDC = 1/2(178 - 42)
</span><span>m∠BDC = 1/2(136)
</span><span>m∠BDC = 68

answer
</span><span>68° </span>
4 0
2 years ago
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