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Lostsunrise [7]
3 years ago
8

Nannette installed a security system in her office for $150 the monthly monitoring fee is $30. So far, Nannette has spent $420 f

or her security system. For how many months has she had the service?
Mathematics
1 answer:
mojhsa [17]3 years ago
5 0

Answer:

9 Months

Step-by-step explanation:420 - 150 = 270

270/30 = 9


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Find the value of 9x + 2 given that -5x-3=2​
Sloan [31]

-5x-3 = 2\\-5x=5\\x = -1

Now plug the x value into 9x + 2

9(-1)+2) = -7

Hope that helps!

7 0
3 years ago
Find the values of x,y, and z. The diagram is not to scale.
vazorg [7]
All the angles must add to 180degrees in a triangle.

180 = 59 + 35 + x
180 = 94 + x
86 = x

Supplementary angles x and z add to 180
180 = x + z
180 = 86 + z
94 = z

Now the last triangle is with angles 11, z, and y
they must add to 180 so...
180 = 11 + z + y
180 = 11 + 94 + y
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Hope this helps!
3 0
3 years ago
find the measures of the numbered angles in the rhombus, will give brainliest ! pls show how you solved it :)))
mylen [45]

Answer:

∠1 = 72°

∠2 = 54°

∠3 = 54°

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Step-by-step explanation:

In the isosceles triangle in which ∠4 is the top vertex angle and ∠3 & 54° are it's base angles. As it is an isosceles triangle , ∠3 = 54°

Using angle sum property of a triangle ,

∠4 + ∠3 + 54° = 180°

⇒ ∠4 + 54°+ 54° = 180°

⇒ ∠4 = 180° - 108° = 72°

Diagonals of a rhombus bisect the vertex angles of a rhombus. So,

∠2 = ∠3 = 54°

Also , opposite vertex angles of a rhombus are equal, So , ∠1 = ∠4 = 72°

6 0
3 years ago
Using the right triangle<br> Find the value of x'<br> 13<br> X<br> 12
sineoko [7]

Answer:

5

Step-by-step explanation:

Apply Pythagorean theorem

13 {}^{2}  = 12 {}^{2}  + x {}^{2}  \\ 169 = 144 + x {}^{2}  \\ x {}^{2}  = 169 - 144 \\ x {}^{2}  = 25 \\ x =  \sqrt{25}  \\ x = 5

4 0
3 years ago
What is the standard form of two hundred ten million, sixty for thousand fifty
stiv31 [10]
The standard form would be 210,640,050.
6 0
3 years ago
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