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3 years ago

What is the value of x? 4 cm 32 cm 40 cm

Mathematics

2 answers:

Luba_88 [7]3 years ago

7 0

Answer:

x=5

Step-by-step explanation:

Since 32 is 8 times 4 cm, then 40/8=5.

LenaWriter [7]3 years ago

5 0

Answer:

Step-by-step explanation:

The ratio of 40/32=x/4 so by cross multiplying you get 32x=160 so x=5

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Find the equation of the line passing through the points (6,3) and (-4,3)<br> Y=

Molodets [167]

${ \qquad\qquad\huge\underline{{\sf Answer}}}$

Equation of line passing through given points :

Let's proceed with two point form ~

$\qquad \sf \dashrightarrow \: y - y1 = \cfrac{y2 - y1}{x2 - x1} (x - x1)$

Assume :

$\qquad \sf \dashrightarrow \: y - 3= \cfrac{3 - 3}{ - 4 - 6} (x - 6)$

$\qquad \sf \dashrightarrow \: y - 3= \cfrac{0}{ - 10} (x - 6)$

$\qquad \sf \dashrightarrow \: y - 3 = 0$

$\qquad \sf \dashrightarrow \: y = 3$

So, the equation of required line is : y = 3 ~

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1 year ago

Which is the more reasonable measurement of the distance between the tracks on a railroad:

nataly862011 [7]

If you're comparing 1.435 * 10^(-3) mm to 1.435 * 10^3 mm, then the more reasonable measurement is 1.435 * 10^3 mm since,

1.435 * 10^3 mm = 1435 mm = 1.435 meters

1 meter is about 3.28 feet approximately

So 1.435 meters is slightly larger (about 4.708 feet) which is a fairly reasonable distance between the tracks on a railroad.

-------------------

Something like 1.435 * 10^(-3) mm is equal to 0.001435 mm, which is far less than 1 mm.

6 0

3 years ago

find the coordinates of point Z that splits the segment XY located 3/7 of the way between X(-2,1) and Y(4,5)

Drupady [299]

Answer:

Z(-0.2, 2.2).

Step-by-step explanation:

We will use section formula when a point, say P, divides any segment ,say AB, internally in the ratio m:n.

$[x=\frac{mx_2+nx_1}{m+n}, y= \frac{my_2+ny_1}{m+n}]$

We have been given the points of segment XY as X at (-2,1) and Y at (4,5) and ratio is 3:7.

$(x_1, y_1)=(-2,1)$

$(x_2, y_2)=(4,5)$

$m:n=3:7$

Upon substituting coordinates of our given points in section formula we will get,

$[x=\frac{(3*4)+(7*-2)}{3+7}, y= \frac{3*5+7*1}{3+7}]$

$[x=\frac{12-14}{10}, y= \frac{15+7}{10}]$

$[x=\frac{-2}{10}, y= \frac{22}{10}]$

$[x=-0.2, y= 2.2]$

Therefore, coordinates of point Z will be (-0.2, 2.2).

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3 years ago

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NARA [144]

Answer:

Step-by-step explanation:

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cestrela7 [59]

4 packs of bottled water (35*4=140)
7 packs of candy bars (20*7=140)

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3 years ago

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