Num teste de resistência de um para-choques, um automóvel de 2300 kg que circula a 15 m/s, embate num obstáculo. Sabendo que a colisão durou 0,54 s, determina a intensidade média da força que atuou no automóvel.

Answer: 30

Step-by-step explanation:

9/10 = numerator 9 x 3 = 27 and  denominator 10 x 3 = 30

2/15 = numerator 2 x 2 = 4 demoninator 15x 2 = 30

This is to make it easier to subtract with a common denominator

= 27-4/ 30

= 23/30

the lowest common denominator is 30

Answer:

Lowest common denominator are

7/10

Answer:

1 cubic centimetre =1 × 10^-6 cubic metre

Step-by-step explanation:

A cube that has a length of 1cm on each side has a volume of 1 cm. How many cubic centimeters are in 1 cubic meter? (Hint: The answer is not 100.)

From the above question,

Side length of the cube = 1cm

Volume of the cube = (side length)³

= (1cm)³

= 1 cm³

How many cubic centimeters are in 1 cubic meter?

Note that:

100 cm = 1 m

1 cm³ = x m³

1 cm³ = (1/100 × 100 × 100)m³

1 cm³ = 1 × 10^-6 m³

Therefore,

1 cubic centimetre =1 × 10^-6 cubic metre

Answer:

r = 24

Step-by-step explanation:

3(r+2)+5(2−r)=−32

Step 1: Simplify both sides of the equation.

3(r+2)+5(2−r)=−32

(3)(r)+(3)(2)+(5)(2)+(5)(−r)=−32(Distribute)

3r+6+10+−5r=−32

(3r+−5r)+(6+10)=−32(Combine Like Terms)

−2r+16=−32

−2r+16=−32

Step 2: Subtract 16 from both sides.

−2r+16−16=−32−16

−2r=−48

Step 3: Divide both sides by -2.

−2r/-2 = -48/-2

r = 24  

Answer: r = 24

3(r+2)+5(2-r) =-32

this equals (if we do the multiplication)

3r+6+10-5r=-32

this equals  (if we simplify)

-2r+16=-32

this equals  (because we are subtracting from 1 side, we must subtract from the other)

-2r=-48

r=24

Answer: -7√61/61

Step-by-step explanation:

I got the answer wrong on my test and this was the correct answer shown.

The cosine of the terminal ray of angle β comes to be -7/√61.

The cosine of an angle is the ratio of the adjacent side to the hypotenuse.

By Pythagoras' theorem

Hypotenuse² = 7²+(2√3)²

Hypotenuse =√61

From the diagram attached

[tex]Cos(180-\beta )=\frac{7}{\sqrt{61} }[/tex]

We know [tex]Cos(180-\beta )=-Cos\beta[/tex]

[tex]-Cos\beta =\frac{7}{\sqrt{61} }[/tex]

[tex]Cos\beta =\frac{-7}{\sqrt{61} }[/tex]

So, the value of cosβ =-7/√61.

Hence, The cosine of the terminal ray of angle β comes to be -7/√61.

To get more about cosine visit:

https://brainly.com/question/24349828

Answer:

B

Step-by-step explanation:

Hope this helps ;)

Answer:

i

Step-by-step explanation:

Answer:

Select the table that has:

4              3

8              6

20           15

(The right answer!)

Step-by-step explanation:

Answer: B= 12 15

Step-by-step explanation:

The given ratios are

A) 2 3= 2: 3  already in its simplest form

B)  12 15 =12:15 Changing to its simplest form, we divide both by 3 giving us           4:5

C)  18 27 =18: 27  Changing to its simplest form, we divide both numbers by 9 giving us =2:3        

D)6 9=6:9  Changing to its simplest form, we divide both by 3 giving us  

       2:3

Therefore the ratio not equivalent to other three is 12:15

Answer:

shaded area = 1/2

shaded area = 0.5

shaded area = 50%

Step-by-step explanation:

Answer:

shaded area = 1/2

shaded area = 0.5

shaded area = 50%

Step-by-step explanation:

mark brainliest Is correct on khan academy

Answer:

60 yd

Step-by-step explanation:

this is what I did: 80^2 + b^2 = 100^2

Answer:

-2

Step-by-step explanation:

The leading coeefceint is the number in front if the highest degree. The highest degree is x^3 so the leading coefficient that -2.

Answer:

16 dimes

Step-by-step explanation:

D=number of dimes

Q=number of quarters

D+Q=37

.25 xQ + .10 x D=6.85

sub Q from first equation

.25(37-D) + .10 x D=6.85

D(.10-.25) + .25 x 37 =6.85

-.15D + 9.25=6.85

D= (6.85-9.25)/(-.15)

D=16

Answer:

the 2nd one

Step-by-step explanation:

Answer:

he multiplied the exponents when he should have added them to get 3^9

you can only add exponents if the base is the same

Answer:

90

Step-by-step explanation:

5+3=8 total ratio

5/8 × 144 = 90

Answer: What does my dad have in common with Nemo?

They both can’t be found...

Explanation: the milk is in the third aisle

Answer:

The answer is D.

Step-by-step explanation:

Answer:0

. 5 + 2 = 7 . 5

1 2 + 2 = 7 . 5

Step-by-step explanation:

Answer:

m = 11

Step-by-step explanation:

0.5m + 2 = 7.5

0.5m + 2 - 2 = 7.5 - 2

0.5m = 5.5

0.5m ÷ 0.5 = 5.5 ÷ 0.5

m = 11

Answer:

I think the answer is C

Step-by-step explanation:

456÷12= 38

95÷38= 2.447 (about 2.5)

Answer:

Step-by-step explanation:

Figure 1

Figure 2

Figure 3

The function is:

Answer:

you need to subtract 23 from 33 to find x

Step-by-step explanation:

Answer:

7+8+9/7*8*9 = 24/504 or 0.0476

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

i believe it is b

Step-by-step explanation:

Answer:

120strip

Step-by-step explanation:

Answer:

friend has 9, Veronica has 23

Step-by-step explanation:

Veronica= 2x +5

friend = x

2x+5+x= 32

combine like terms

3x+5=32

move 5 to the other side

3x= 27

divide by 3

x=9

Answer:

An acute triangle is a triangle with three acute angles. An obtuse triangle is a triangle with one obtuse angle and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry

Answer:

x is 13

y is 39

Step-by-step explanation:

Answer:

y= 39  x= 10

Step-by-step explanation:

congruent isosceles triangles

longer sides measure the same  13 and 13    39 and 39 ( y =39)

39/30  = 13/x

cross multiplication:

39x = 13x30

39x = 390

x=10

Answer:

25m

Step-by-step explanation:

Shannon's rate is 2,500m/100min. Simplifying, we see that this is equal to 25m/1min.

So, she walks 25 m in one minute.

Answer:

The orthocenter of a triangle is the point at which the three altitudes of a triangle intersect.  This involves creating 3 lines, one from each vertex (K, L, and M) perpendicular to the line segment opposite it, so K⊥LM, L⊥KM, and M⊥KL.

Because these three lines intersect at one point, you only need to do this procedure for two of the three altitudes.  Because K and M are on the same Y coordinate (-4), lets do this for LM and KL

First, we need to find the slope of the perpendicular to each line segment, so we need the slope of LM and KL.

The slope is the change in Y over the change in X

Slope LM = 6 -(-4) / 2-7 = 10/-5 = -2

Slope KL =  -4-(6) / 4-2 = -10/2 = -5

The slope of a perpendicular line is the negative reciprocal of the slope of the given line, so for

the slope of K⊥LM has to be 1/2 and

the slope of M⊥KL has to be 1/5

Second, the vertex has to be on a line with that slope.  So using the point-slope formula

(y-y1) = m(x-x1) , where x1,y1 is a point on the line for each line gives us

K⊥LM:  y-(-4) = 1/2(x-4)

M⊥KL:  y-(-4) = 1/5(x-7)

Third, find the point on both lines, are where the two equations are equal

So, 1/2(x)-2 = 1/5(x) - 7/5;

5x - 20 = 2x - 14

3x = 6 --> x=2

y+4=-1 --> y=-5

(2,-5)

Step-by-step explanation:

Answer:

23/55

Step-by-step explanation:

Assuming you want this simplified,

23/55

Answer:

The number of the size of the cup is determined by ____________ diameter of the cup.

Step-by-step explanation:

Answer:

I may be wrong but the answer is 96 if it is not you can delete my answer.

I'm sorry if i'm not much help.