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iren2701 [21]
3 years ago
9

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?​

Mathematics
1 answer:
zimovet [89]3 years ago
4 0

Answer:

0.45 cm

Step-by-step explanation:

Actual length of the micro chip

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

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Show your work: convert 1/8 into a decimal
lukranit [14]

answer : 0.125

explanation: it’s actually really easy all you have to do is

take the fraction and divide it like :

1/8 = 1 divided by 8 = 0.125
3 0
2 years ago
Solve x2 + 2x + 9 = 0
Keith_Richards [23]
x^2+2x+9=0 \\ \\
a=1 \\ b=2 \\ c=9 \\ b^2-4ac=2^2-4 \times 1 \times 9=4-36=-32 \\ \\
x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-2 \pm \sqrt{-32}}{2 \times 1}=\frac{-2 \pm \sqrt{-16 \times 2}}{2}=\frac{-2 \pm 4i\sqrt{2}}{2}=-1 \pm 2i\sqrt{2}

The answer is D.
8 0
3 years ago
Read 2 more answers
If M is the midpoint of AB, find the coordinate of point B if the coordinate of point A are (7,10) and the midpoint, M is(6,1)
xeze [42]

Answer:

(5, - 18)

Step-by-step explanation:

IN MIDPOINT, WE SUM BOTH X VALUES AND Y VALUES AND DIVIDE BY TWO.

(x+7)/2=6. (y+20)/2=1

X+7=12. Y+20=2

X=12-7. Y=2-20

X=5. Y=-18

B=(5, - 18)

8 0
3 years ago
7. Holly plays pool on Sundays. She pays $6.50 for admission and $3.50 for
ollegr [7]

Answer:

3.50x+6.50=y

Step-by-step explanation:

6 0
2 years ago
In triangle ABC, line A.B.=CB Angle ABC equals 4X -3, and angle CAB equals X -3, what is angle ACB
Soloha48 [4]

Answer:

∠ACB = 28.5

Step-by-step explanation:

In triangle ABC,

angle CAB = x-3

angle ABC = 4X-3

It is also given that AB=CB

We know that if two sides of any triangle are equal then corresponding sides must also be equal.

Hence

angle ACB = angle CAB

angle ACB = x-3    {Given that angle CAB = x-3 }

We know that sum of all three angles of a triangle is 180 degree so let's add given angles

angle ACB + angle CAB + angle ABC = 180

(x-3) + (x-3) + (4x-3) = 180

x-3 + x-3 + 4x-3 = 180

6x-9 = 180

6x = 180+9

6x = 189

x = 189/9

x= 31.5

Now plug value of x into

angle ACB = x-3 = 31.5-3 = 28.5

Hence final answer is

∠ACB = 28.5


3 0
3 years ago
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