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fenix001 [56]
3 years ago
9

I’ll mark brainliest

Mathematics
1 answer:
enyata [817]3 years ago
6 0

Answer:

\text{A. }y=1.30x+1.50

Step-by-step explanation:

The two ringtones will cost her a total of 0.75\cdot 2=1.50 and is a fixed amount. The relationship between the cost and number of songs only is y=1.30x and therefore the answer is \boxed{\text{A. }y=1.30x+1.50}. You can also directly find the answer by finding the y-intercept (in this case 1.50), as no other answer choices include the term 1.50, so A must be the correct answer.

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The design of a microchip has the scale 40:1. The length of the design is 18cm, find the actual length of the micro chip?​
zimovet [89]

Answer:

0.45 cm

Step-by-step explanation:

Actual length of the micro chip

=  \frac{1}{40}  \times 18 \\  \\  =0.45 \: cm

4 0
3 years ago
Which point lies on the circle represented by the equation (x+5) + (y-9) = 8
olga_2 [115]

Answer:

(-5,9+√8)

Step-by-step explanation:

There are two ways in which you can find a point that lies in the circle. One of them is to do y the subject of the formula, and another one is to determine the center of the circumference, and with the information of the radius, you can sum this value upward or downward.

the general equation of a circle is:

(x-h)^2+(y-k)^2=r^2

with center at (h,k)

you have the following equation:

(x+5)^2+(y-9)^2=8\\\\h=-5\\\\k=9\\\\r=\sqrt{8}

Then, the center is (-5,9)

if you sum the value of the radius in one of the fourth directions (up, down, left, right), for example upward you have

(-5,9+r)=(-5,9+\sqrt{8})

Then, one point that lies in the circle is (-5,9+√8)

3 0
3 years ago
rosalyn has decided to purchase a $14,000 car . she plans on putting a $200 down toward the purchase, and financing the rest at
garik1379 [7]
$100 is the answer for your question
6 0
3 years ago
2a+2b-2ab+y=6<br><br> I REALLY NEED HELP
Orlov [11]
This is how to solve this

6 0
3 years ago
Identify the congruent triangles in the figure.
Komok [63]

Answer:

The answer would be HFG = KIJ (A)

If we know that the opposite and the adjacent side of the triangle are congruent, then the hypotenuse is congruent too. Therefor, A is correct as we know the opposite side and the adjacent side are congruent.

5 0
3 years ago
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