Help me please please!!

Initial velocity = 63m/s

Final velocity = 75m/s

Time taken = 4.2

We have to find acceleration of car[tex].[/tex]

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◈ Acceleration is defined as the rate of change of speed.

It is a vector quantity having both magnitude as well as direction.

SI unit : m/s²

⇒ a = (v - u) / t

⇒ a = (75 - 63) / 4.2

⇒ a = 12/4.2

The speed of a car traveling on a straight road increases from 63 m/s to 75 m/s in 4.2 seconds. What was the car's acceleration?

[tex] \rm\red {Given:} [/tex]

[tex] \rm\red {To \: find:} [/tex]

[tex] \rm\red {Calculation:} [/tex]

We know that,

[tex] {\huge {\boxed {\tt { a = \dfrac{v-u} {t}}}}} [/tex]

Substituting values-

[tex] \sf { \qquad \leadsto a = \dfrac{75-63}{4.2}} [/tex]

[tex] \sf { \qquad \leadsto a = \dfrac{12}{4.2}} [/tex]

[tex] \sf { \qquad \leadsto a = \dfrac{\cancel {12} {} ^{\: \: 6} \times 10}{\cancel {42} {} ^{\: \: 21} }} [/tex]

[tex] \sf { \qquad \leadsto a = \dfrac{\cancel6 {} ^{\: \: \: 2}\times 10 }{\cancel {21} {} ^{\: \: 7}}} [/tex]

[tex] \sf { \qquad \leadsto a = \dfrac{2 \times 10}{7}} [/tex]

[tex] \sf { \qquad \leadsto a = \dfrac{20}{7} = 2.85} [/tex]

[tex] \therefore [/tex] Acceleration of the car was [tex] \sf { 2.8m/{s} ^{2}} [/tex]

Answer:

23 percent

Step-by-step explanation:

The percentage of females who are freshmen or sophomores will be 50%.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol 'percent' is used to symbolize it.

The frequency table shows the distribution of 1,200 students at a high school.

The frequency table is given below.

Then the percentage of females who are freshmen or sophomores will be

P = (134 + 162) / 592 x 100

P = 296 / 592 x 100

P = 0.5 x 100

P = 50%

Thus, the correct option is B.

More about the percentage link is given below.

https://brainly.com/question/8011401

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Answer:

51.6

Step-by-step explanation:

Answer:

51.6

Step-by-step explanation:

60% = 0.6

0.6x86=51.6

Answer:

C) (8,12)

Step-by-step explanation:

[tex]MP= (\frac{x_1+x_2}{2} )(\frac{y_1+y_2}{2} )\\MP= (\frac{5+11}{2} )(\frac{9+15}{2} )\\MP= (\frac{16}{2} )(\frac{24}{2} )\\MP= (8,12)[/tex]

Answer:

224.4

Step-by-step explanation:

102x2.2=224.4

Could I please have Brainliest.

Answer:

1.) inputs

2.) output

3.) 6

Step-by-step explanation:

Hopefully this helps you ;)

pls mark brainlest :)

The missing value for x=-1 is y=6

By substituting the known values in the equation gives the unknown value.

Given equation is y=2-4x

To find y when x=-1

Substitute x=-1 in given equation,

we get y=2-4(-1)

y=6

Hence, the value of y when x=-1 is 6

Learn more about solving equation here:

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Answer:

-1.5

Step-by-step explanation:

The product of slopes of two perpendicular lines = -1

If line one has a slope of 2/3;

Let line two, perpendicular to line one, has a slope of a

2/3 × a = -1

a = -1 ÷ 2/3 = -3/2 = -1.5

Answer:

m<DAE = 80°

Step-by-step explanation:

Given that m<CAB = 110°,

m<DAE = (x + 4)°,

m<EAF = 30°,

m<EAF + m<DAE = m<DAF (angle addition postulate)

30° + (x + 4)° = m<DAF (substitution)

(34 + x)° = m<DAF

<DAF and <CAB are vertically opposite angles. Vertically opposite angles are said to be congruent. Therefore:

m<DAF = m<CAB

(34 + x)° = 110° (substitution)

The equation above can be used to solve for x as follows:

34 + x = 110

x = 110 - 34 (Subtracting 34 from both sides)

x = 76

m<DAE = (x + 4)°

Plug in 76, to replace x

m<DAE = 76 + 4

m<DAE = 80°

Answer:

[tex]\boxed {\tt A= 14 \ ft^2}[/tex]

Step-by-step explanation:

The area of a triangle can be found using the following formula.

[tex]A=\frac{1}{2} bh[/tex]

where [tex]b[/tex] is the base and [tex]h[/tex] is the height.

In this triangle, the base is 7 feet and the height is 4 feet.

[tex]b= 7 \ ft\\h= 4 \ ft[/tex]

Substitute the values into the formula.

[tex]A=\frac{1}{2} bh[/tex]

[tex]A=\frac{1}{2} (7\ ft)(4 ft)[/tex]

Multiply 7 ft and 4 ft.

[tex]A=\frac{1}{2} (28 \ ft^2)[/tex]

Multiply 28 square feet by 1/2 or divide 28 square feet by 2.

[tex]A= 14 \ ft^2[/tex]

The area of the triangle is 14 square feet.

Answer:

that is 60 percent (calculated percentage %) of number 100? Answer: 60.

First coupon:

89 - 50 = $39 (discount price)

Second coupon:

50% = 0.5

89 * 0.5 = 44.5

89 - 44.5 = $44.5 (discount price)

39 < 44.5

Therefore, the better option is using the $50 off one item.

Best of Luck!

Answer:

1/216

Step-by-step explanation:

6^-3= 1/6^3

=1/216

Answer;

6³-3³

6×6×6-3×3×3=

216-27=199

199-1=answer

my  number eight dosent work please understand

Answer:

Domain: (-infinity, infinity)

Range: [0,infinity)

Answer:

Domain: Negative infinity less than to x less than inifinity.

Range: [0, infinity)

X-Intercept: (-6, 0)

Y-Intercept: (0, infinity)

Asym: None

Minimum: (-6, 0)

HERES THE EXAMPLE: If | x | = 3, we know that x may be either +3 or - 3,

since both are 3 units from the origin.

Notice that the answer is "OR", since x cannot be both -3 and +3 at the same time.

ANSWER: so the x=-6 would be would just be six units -6 to 0 would be 6

the x=10 would be -10

Answer:

(-1,-3)

Step-by-step explanation:

I hope this help

The common difference between successive terms in this arithmetic sequence is 6.

Option D is the correct answer.

It is a sequence where the difference between each consecutive term is the same.

We have,

The common difference between successive terms in the sequence 2, 8, 14, 20, 26, ... is 6.

To see why, notice that each term in the sequence is obtained by adding 6 to the previous term.

For example, to get from 2 to 8, we add 6. To get from 8 to 14, we add another 6.

This pattern continues for each successive term in the sequence.

Thus,

The common difference between successive terms in this arithmetic sequence is 6.

Learn more about arithmetic sequence here:

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Answer:

11 pounds of flour and 16.5 sticks of butter

Step-by-step explanation:

2/64 = 0.03125

3/64 = 0.046875

0.03125 * 352 = 11

0.046875 * 352 = 16.5

Answer:

15 1/2 sticks of butter, and 11 pounds of flower, hoped this helped.

Step-by-step explanation:

Answer:

heya this is your answer

Step-by-step explanation:

1) angle 1 = angle EAB

2) angle 3 = 55 degree

3) angle ABF = angle 2 + angle 3

                     =  90 degree + 55 degree

                     = 145 degree

plz mark me as brainliest

(i) 1, 2, 4

(ii) 1, 2, 3, 6

(iii) 1, 2, 3, 4, 6, 12

:)

Answer:

3ny

Step-by-step explanation:

For this problem, the price of a widget is represented by 'n' amount of dollars.  Additionally, the store was stocked with 4y widgets.

To find the total cost of the widgets sold, we will use the information that at the end of the day, the store only had y widgets remaining.

From here we can say the following to represent the total cost of the widgets sold:

cost = n * (4y - y)

cost = n * (3y)

cost = n3y

You can rewrite this cost to be 3ny as in the answer choice.

Cheers.

Answer:

591

Step-by-step explanation:

added the 2 in the equation and minused 2000 from that

Answer:

6cm

Step-by-step explanation:

a2 + b2 = c

(1.4)2 + (2)2 = c

1.96 + 4 = 5.96

=5.96cm (round it)

final answer = 6cm

Answer:

CB = 1.4 cm

Step-by-step explanation:

Given is a right angled triangle.

[tex] {x}^{2} + {1.4}^{2} = {2}^{2} \\ {x}^{2} + 1.96= 4 \\ {x}^{2} = 4 - 1.96 \\ {x}^{2} = 2.04 \\ x = \sqrt{2.04} \\ x = 1.42828569 \\ x \approx 1.4[/tex]

CB = 1.4 cm

Answer:

|-2y+5|=2|4y-1|

-2y+5=8y-2

-2y-8y=-2-5

-10y=-7

y=7/10

Step-by-step explanation:

Answer:

Surface Area =237.5

Answer:237.5

Step-by-step explanation:

Answer: the first option