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Zielflug [23.3K]
3 years ago
11

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Mathematics
1 answer:
lina2011 [118]3 years ago
5 0
I don’t understand. lol
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I don’t quite understand this problem could someone help me please
ale4655 [162]

Answer:

\frac{7\sqrt{65}}{65}

Step-by-step explanation:

Cosine is the ratio of the side adjacent to the angle and the right triangle hypotenuse.

cos B = \frac{7}{\sqrt{65}} = \frac{7\sqrt{65}}{65}

3 0
2 years ago
Two right triangles are graphed on a coordinate plane. One triangle has a vertical side of 4 and a horizontal side of 10. The ot
Dahasolnce [82]
They are similar triangles because they are both right triangles
4 0
3 years ago
A cell phone store sells the basic model of a phone for $30 and the upgraded model for $100 when a customer signs a two-year agr
mixer [17]
<span>You need to set up 2 equations for this, a system to be exact let x represent the cheaper phone and y represent the upgraded phone for store costs you will have 5x+25y=200 for selling prices you will have 30x+100y=900 set these two equations together 5x+25y=200 30x+100y=900 multiply the first one by -4 and add them -20x-100y=-800 30x+100y=900 10x=100 x=10 10 cheaper phones, plug into any equation again 5(10)+25(y)=200 y=6<<<6 upgraded phones</span>
3 0
3 years ago
If x-5/4 = -9/5, then x =
Lerok [7]

Answer:

[See Below]

Step-by-step explanation:

✦ First change the improper fractions to decimals:

  ✧ ⁵⁄₄ = 1.25

  ✧ -⁹⁄₅ = -1.8

✦ Then divide:

  ✧ 1.25 ÷ -1.8 = -0.69

So x would be -0.69 in decimal form.

~<em>Hope this helps Mate. If you need anything feel free to message me.</em>

8 0
3 years ago
What is the area of the circle ?
Sever21 [200]

Answer:

πr² is the area of a circle

4 0
3 years ago
Read 2 more answers
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