please solve 4x - 3(x - 2) = 21

Answer:

0.54 as a fraction is 54/100

4.18 as a mixed number is 4 18/100

0.51 as a fraction is 51/100

it would be really cool if you could mark me as brainliest :)

Step-by-step explanation:

Answer:

287/9

Step-by-step explanation:

so the formula is a=1/2bh

A=287

B=?

H=18

:287=1/2b*18

287=b*9

b=287/9

Answer:

19/6 or 3 and 1/6

Step-by-step explanation:

Answer:

Corrected to 1 decimal place.

Step-by-step explanation:

She corrected the values to  the tenths digit,

Answer:

C. rounding to the nearest tenth

Step-by-step explanation:

Aisha rounded 1.45 to 1.5 and she also rounded 2.38 to 2.4, which supports the fact that she rounded each number to the nearest tenth.

Answer:

you got it

a supplermentery angle forms a half circle

Answer:

Hi there

Your answer is:

13i

Step-by-step explanation:

Find the square root of √-169

We do i as coefficient to get rid of negatives

√169 is 13

Hope this helps

Answer: E: The number of books a person finished reading last month

Step-by-step explanation:

First, a discrete variable is a variable that only can take some given values in a set, the discrete variables are usually not dense, and a continuous variable is a variable that can take any value in a range (where the accepted values are dense).

So, for example, the set of the natural numbers is discrete, and the set of the real numbers can represent a continuous variable.

Here the only option that is really discrete will be the number of books that a person finished reading last month because here only positive whole numbers are accepted (you can not finish a 0.454 of a book)

The other options are continuous because all are classical measures.

For example, the weight of a person can jump between:

75.6kg and 75.7kg.

So you could think that this is discrete because the values between 75.6kg and 75.7g are not shown with our measuring device, but those will be added in the error of the measure because the weights between 75.6kg and 75.7kg are actually possible, so they must be accepted.

Option E is right.

A. The height of a person. Height is a continuous variable.

B . The weight of a person. Weight is a continuous variable.

C. The length of a person’s arm span. Length is a continuous variable.

D. The time it takes for a person to solve a puzzle. Time is a continuous variable.

E. The number of books a person finished reading last month. The number of books is discrete variable.

Learn more: https://brainly.com/question/11315571

Answer:

You can’t determine that.

Step-by-step explanation:

Answer:

Steve had an average speed of 62.55 mph while Mary had an average speed of 67.55 mph

Step-by-step explanation:

Here, we want to calculate the average speed of each of the two.

From the question, we are told that Mary drove an average of 5 mph faster than steve.

So, let the average speed of Steve be x mph, this means that the average speed of Mary will be (x + 5) mph

Mathematically;

Time = distance/speed

Time taken by Steve = 845/x hours

Time taken by Mary = 845/(x + 5)

But Mary took an hour less to complete her own trip;

This means that;

if we add one hour to the time spent by Mary, then we will have the time spent by Steve

845/(x + 5) + 1 = 845/x

845/(x + 5) = 845/x -1

845/(x + 5) = (845 - x)/x

Cross multiply;

845(x) = (x + 5)(845-x)

845x = x(845-x) + 5(845-x)

845x = 845x-x^2 + 4225 - 5x

x^2 + 5x - 4225 = 0

We can solve this using the quadratic formula;

x = -b ± √(b^2 - 4ac)/2a

where a = 1 , b = 5 , c = -4225

x = -5 ± √(5^2 - 4(1)(-4225)/2(1)

x = -5 ± √(25 + 16,900)/2

x = -5 ± √(16,925)/2

x = (-5 + 130.1)/2 or (-5-130.1)/2

We ignore the negative side as speed cannot be negative

x = (-5 + 130.1)/2 = 62.548 which is approximately 62.55 mph

So steve’s speed is 62.55 mph while Mary’s speed = 62.55 + 5 = 67.55 mph

Answer:

What care is accelerating? I can't even see the answer choices-_-

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

A rational number is 9.

When you multiply 0.9x10 you get the sum of 9.

9 is a rational number because it is a perfect square and an integer.

I hope this helps you understand :)

Answer:

[tex]a=\dfrac{3b-7}{3}[/tex]

Step-by-step explanation:

Given that,

The given equation is :

5b + 6a – 7 = 2b + 9a

We need to solve the above equation for a. Taking he terms having a and b in LHS and constants in RHS.

5b+6a-2b-9a=7

taking like terms together

(6a-9a)+(5b-2b)=7

-3a+3b=7

Subtracting both sides by 3b. So,

-3a+3b-3b=7-3b

-3a=7-3b

Dioviding both sides by (-3). So,

[tex]a=\dfrac{7-3b}{-3}\\\\a=\dfrac{3b-7}{3}[/tex]

Hence, the value of a is [tex]a=\dfrac{3b-7}{3}[/tex].

Answer:

[tex]a = \frac{3b-7}{3}[/tex]

Step-by-step explanation:

Answer:

Easy, 4 units

Step-by-step explanation:

Answer:

x = 1/6

Step-by-step explanation:

"solve for x" would be better and clearer than "please answer."

We start the solution by subtracing 3x from both sides, obtaining

4 = 6x + 3

and then isolate the 3x term by subtracting 3 rom both sides:

6x = 1

Finally we divide both sides of this result by 6, obtaining

x = 1/6     This is the "answer" to the problem "solve 3x + 4 = 9x + 3 for x."

Answer:

Step-by-step explanation:

use the formula y=mx+b. the first number in the parenthesis is -3 so that is x. 3 is y and the slope is m

so it is 3=4(-3)+b

Answer:

y= 2x -3

Step-by-step explanation:

Let's rewrite the given equation into the form of y=mx+c, so that we can find the gradient of the line. In this form, m (coefficient of x) is the gradient.

4x -2y= 3

2y= 4x -3

Divide by 2 throughout:

[tex]y = 2x - 1 \frac{1}{2} [/tex]

Thus the gradient is 2.

Parallel lines have the same gradient thus the line would also have a gradient of 2.

Substitute m=2 into the equation:

y= 2x +c

To find the value of c, substitute a pair of coordinates.

When x=2, y=1,

1= 2(2) +c

1= 4 +c

c= 1 -4

c= -3

Thus, the equation of the line is y= 2x -3.

Answer:

$437.74

Step-by-step explanation:

16 x 44 = 704 -150=554 x 0.08= 554-44.32= 509.68 x 0.07= 509.68 - 35.6776 = 474 x 0.0765 = 474 - 36.261 = 437.74

Answer:

$ 394.54

Step-by-step explanation:

Sarah makes $16 and hour. She works 44 hours this week.

Optional deductions are

- $50 for health insurance and

- $100 for child care.

- Federal  taxes are 8%

- State taxes are 7% and

- FICA is 7.65%.

What is Sarah's NET  pay?

salary for a week: $16 x 44 =                   $704

deductions:

- health insurance and                             - $50

- child care.                                               - $100

- Federal  taxes are 8%  = 0.08 (704) =   - $53.32

- State taxes are 7% 0.07 (704)          =   - $49.28

- FICA is 7.65% = 0.0765 (704)          =    -$53.86

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

                                                  total = $ 394.54  (net pay)

Step-by-step explanation:

[tex]4 + \frac{2}{3} = \frac{3 \times 4 + 2}{3} = \frac{14}{3} = 4 \frac{2}{3} [/tex]

[tex] \frac{67}{71} \times \frac{381}{399} = \frac{67 \times 381}{71 \times 399} = \frac{25527}{28329} = \frac{8509}{9443} [/tex]

[tex] \frac{684}{795} \div \frac{24}{37} = \frac{684}{795} \times \frac{37}{24} = \frac{25308}{19080} = 1.33[/tex]

Answer:

[tex] \huge{ \boxed{ \tt{75.9}\sf \: {m}^{2} }}[/tex]

Step-by-step explanation:

[tex] \underline{ \sf{Given}} : [/tex]

[tex] \star{ \sf{ \: Height \: of \: a \: parallelogram \: (h) \: = 11m}}[/tex]

[tex] \star{ \sf{ \: Base \: of \: a \: parallelogram \: (b) \: = 6.9m}}[/tex]

[tex] \underline{ \sf{Finding \: the \: area \: of \: the \: parallelogram \: having \: height \: of \: 11m \: and \: base \: of \: 6.9m}} : [/tex]

[tex] \boxed{ \sf{Area \: of \: parallelogram = base \: ∗ \: height}}[/tex]

[tex] \mapsto{ \sf{Area \: of \: parallelogram = 6.9m \: ∗ \: 11m}}[/tex]

[tex] \mapsto{ \sf{Area \: of \: a \: parallelogram = 75.9 \: {m}^{2} }}[/tex]

Hope I helped!

Best regards! :D

~[tex] \sf{TheAnimeGirl}[/tex]

[tex] \huge\sf {\dag Question} [/tex]

If the height of a parallelogram is 11m and the base is 6.9m, what is the area of the parallelogram?

[tex] \huge\sf {\dag Solution } [/tex]

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

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

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

We know that,

[tex] {\underline {\underline {\rm {\red { Ar. \: of \: parallelogram = h \times b}}}}} [/tex]

Substituting values-

[tex] \sf {\implies Ar. \: of \: parallelogram = 11 \times 6.9}[/tex]

[tex] \sf {\implies Ar\: of \: parallelogram = 75.9{m}^{2}}[/tex]

Answer:10.546

Step-by-step explanation:

0.76+9.786=10.546

Answer:

Step-by-step explanation:

It’s 14/5 lol

Answer:

d) 1

Step-by-step explanation:

The variance of standard normal distribution is simply put as 1.

If you take it a bit further, even though not asked, the mean of a standard normal distribution is 0.

Therefore, the conclusion is that, the variance of a standard normal distribution is 1, while the mean of the same standard normal distribution is 0

Answer:

x=172

Step-by-step explanation:

I hope this helps you

Answer:

8.5

Step-by-step explanation:

Using basic operations, it is found that you have 12 eggs.

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

A similar problem is given at https://brainly.com/question/24459209

Answer:

D

Step-by-step explanation:

Its 5x (on bottom row, its the simplest way to put it), and 625 x 5 = 3125, then 3215 x 5 = 15625. So its D.

Answer:

D

Step-by-step explanation:

If you look closely, you may see a pattern in the denominators.

the 1st one is 5,

the 2nd one is 5²

the 3rd one is 5³

so it is only reasonable that the next 2 are 5^4 and 5^5

Answer:

8 - m/n*p^2

8 - 8/2 * ^7^2

8 - 4 * 49

8 - 196= -188

Step-by-step explanation:

Answer:

801

Step-by-step explanation:

When we distribute the 9, we simply multiply:

9 · 89 = 801