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Vanyuwa [196]
3 years ago
6

Y= 15x+55 Solve, please I am new, to this kinda stuff.

Mathematics
2 answers:
ZanzabumX [31]3 years ago
8 0
The slope is 15 & the y-intercept is (0,55)
11Alexandr11 [23.1K]3 years ago
7 0

Answer:

x=-11/3

Step-by-step explanation:

0=15x+55

-15x=55(Divide both sides)

x=-11/3

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antiseptic1488 [7]

Answer:

3/6 or 1/2 meter lomg.

Step-by-step explanation:

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3 years ago
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Solve the quadratic formula for (5x+3)(5x-3)=19X<br><br> Must show all workings
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X=1.09
X=-0.33
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7 0
3 years ago
I have tryed to find this problem and I can't everytime I try the numbers that are to high for the answer what I'm I doing wrong
garri49 [273]

Answer:

1071/2

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3 0
4 years ago
Read 2 more answers
Two vertical poles of heights 60 ft and 80 ft stand on level ground, with their bases 100 ft apart. A cable that is stretched fr
Andreyy89

Answer:

Step-by-step explanation:

Given

height of two Poles are 60 and 80 ft

Distance between them is 100 ft

Let x be the distance of Pole of ht 80 ft from Point of stretch

thus length of rope is given by

L=L_1+L_2

L_1=\sqrt{80^2+x^2}

L_2=\sqrt{60^2+(100-x)^2}

L=\sqrt{80^2+x^2}+\sqrt{60^2+(100-x)^2}

differentiate w.r.t x we get

\frac{\mathrm{d} L}{\mathrm{d} x}=\frac{2x}{2\sqrt{80^2+x^2}}-\frac{2\left ( 100-x\right )}{\sqrt{60^2+\left ( 100-2x\right )^2}}

Put \frac{\mathrm{d} L}{\mathrm{d} x}=0 to get minimum value

\frac{2x}{2\sqrt{80^2+x^2}}=\frac{2\left ( 100-x\right )}{\sqrt{60^2+\left ( 100-2x\right )^2}}

squaring

x^2\left ( (100-x)^2+60^2\right )=(100-x)^2(80^2+x^2)

Rearranging

28x^2-1800x+640000=0

x=\frac{400}{7}

thus L_1=98.312 ft

L_2=73.73 ft

L=172.04 ft  

7 0
3 years ago
In order to conduct an experiment five subjects are randomly selected from a group of 48 subjects how many different groups of f
exis [7]

Answer:

1,712,304 ways

Step-by-step explanation:

This problem bothers on combination

Since we are to select 5 subjects from a pool of 48 subjects, the number of ways this can be done is expressed as;

48C5 = 48!/(48-5)!5!

48C5 = 48!/43!5!

48C5 = 48×47×46×45×44×43!/43!5!

48C5 = 48×47×46×45×44/5!

48C5 = 205,476,480/120

48C5 = 1,712,304

Hence this can be done in 1,712,304ways

3 0
3 years ago
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