SOMEONE PLEASE HELP ILL MARK AS BRAINLIEST AND GIVE 5 STARSSSSS

Answer:

x=3

Step-by-step explanation:

10x=30

Divide both sides by the co-efficient of x which is 10

10x = 30/10

10

x =3

Aliyyah.

Answer:

dy/dt = -3/2

Step-by-step explanation:

x² + y² = 25

2x dx/dt + 2y dy/dt = 0

x dx/dt + y dy/dt = 0

3 * 2 + 4 dy/dt = 0

so

dy/dt = -6/4 = -3/2

The surface area of the composite figure is 662 square cm

The surface area of the sum of all the area of the faces of a figure. The given figure is made up of two rectangular prism.

The surface area of a rectangular prism is given as;

TSA = 2(lw + wh + lh)

l is the length

w is the width

h is the height

Determine the required surface area

TSA = 2[(3)(3)+3(8)+3(8)]+2(7(10)+7(12)+10(12)]

TSA = 2(9+48)+2(190+84)

TSA = 114 + 548

TSA = 662 square cm

Hence the surface area of the composite figure is 662 square cm

Learn more on surface area of a figure here: https://brainly.com/question/1090412

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Answer: Rizal recieved $320

Step-by-step explanation:

240/1 + 2 = 80
80 x 4 = 320

1:2:4

80:160:320

Answer:

there must be some errors in the qn

Answer:

[tex]x=10,\:x=6[/tex]

Step-by-step explanation:

[tex]\sqrt{4x-24}=x-6[/tex]

[tex]4x-24=x^2-12x+36[/tex]

[tex]x=10,\:x=6[/tex]

[tex]\mathrm{The\:solutions\:are}[/tex]

[tex]x=10,\:x=6[/tex]

Answer:

False

Step-by-step explanation:

3x9=27

27^2=729

279=188

The numbers dont match.

Hence, the equation is false.

Answer: False

Step-by-step explanation:

3×9^2=188

Calculate 9 to the power of 2 and get 81.

3×81=188

Multiply 3 and 81 to get 243.

243=188

Compare 243 and 188.

False

[tex]f(x) = 4 {x}^{2} - 6x + 11[/tex]

[tex]f(10 + h) = 4 ({10 + h})^{2} - 6(10 + h) + 11 \\ [/tex]

[tex]f(10 + h) = 4(100 + 20h + {h}^{2}) - 60 - 6h + 11 \\ [/tex]

[tex]f(10 + h) = 400 + 80h + 4 {h}^{2} - 60 - 6h + 11 \\ [/tex]

[tex]f(10 + h) = 4{h}^{2} + 74h + 351[/tex]

_____________________________________________

[tex]f(10) = 4 ({10})^{2} - 6(10) + 11[/tex]

[tex]f(10) = 400 - 60 + 11[/tex]

[tex]f(10) = 351[/tex]

_____________________________________________

[tex] \frac{f(10 + h) - f(10)}{h} = \\ [/tex]

[tex] \frac{4 {h}^{2} + 74h + 351 - (351)}{h} = \\ [/tex]

[tex] \frac{4 {h}^{2} + 74h }{h} = \\ [/tex]

[tex] \frac{4 {h}^{2} }{h} + \frac{74h}{h} = \\ [/tex]

[tex]4h + 74[/tex]

_____________________________________________

[tex]ah + b[/tex]

[tex]4h + 74[/tex]

So :

[tex]a = 4[/tex]

[tex]b = 74[/tex]

Answer:

-√2

Step-by-step explanation:

f(x) = sinx + cosx

f'(x) = cosx - sinx

f''(x) = -sinx - cosx

f''(pi/4) = -sin(pi/4) - cos(pi/4) = -√2

Answer:

$35,000

$291.67

Step-by-step explanation:

Assuming that this loan uses simple interest, the equation for this problem will be A=P(1+rt). In this formula: A is the total amount paid, P is the initial amount, r is the rate in decimal form, and t is the time in years.

First, set up the equation by plugging the known values into the formula.

Next, uses this information to find A

This means that the total amount paid was $35,000.

Next, find the monthly payments. Using the time in years, we can figure out that this loan was paid over 120 months. Additionally, the monthly payment was equal for each month. This means that to find the monthly payment, simply divide the total amount by the number of months.

Each month, approximately $291.67 was paid.

Answer:

Step-by-step explanation:

The monthly payment on a loan is given by the amortization formula. The total amount repaid is the product of the monthly payment and the number of payments made.

The amortization formula is ...

  A = P(r/12)/(1 -(1 +r/12)^(-12t)) . . . . principal P, interest rate r, t years

For the loan values given here, this is ...

  A = 20,000(0.075/12)/(1 -(1 +0.075/12)^(-12·10)) ≈ 237.40

The total repaid over 120 payments is ...

  $237.40 × 120 = $28,488

The total amount paid is $28,488. The monthly payment is $237.40.

__

Additional comment

The payment and total paid can be computed using a suitable calculator, spreadsheet, or app. The attached picture is from an Android version of a TI-84 calculator. It comes with a built-in set of financial functions, similar to those found in a spreadsheet.

Answer:

2.5

Step-by-step explanation:

35/14 = 2.5

25/10 = 2.5

15/6 = 2.5

divide the bigger over the newer one over the older one to get your scale factor

Answer:

One fifth is like  you saying one fifth of something, so if you have 3 fifths of something it's just 3 times more than one fifth.  so like 1/5 is 20% so 3/5 is 3 times more which is 60%

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

1/5 of 10 is 2,

so if you have 3/5, it is the same as 1/5 3 times.

1/5 of 10 is 2, so for 3/5 of 10 you multiply 2 by 3.

1/5 of 10 = 2

2/5 of 10 = 4

3/5 of 10 = 6

4/5 of 10 = 8

5/5 of 10 = 10

Here is a picture with the answer to you question

Answer:

a+(n-1)14

Step-by-step explanation:

ok so

a=the first number which is 16.50

n=the term.eg since 30.50 is the second number it's the second term

14 is the common difference d

I found 14 like this

30.50=16.50+(2-1)d

Therefore d=14

hence the formula is a+(n-1)14

Answer:

Step-by-step explanation:

3y - 2x +2 = 0

3y = 2x - 2

[tex]y = \dfrac{2}{3}x-\dfrac{2}{3}[/tex]

y = mx + b

Slope of line a = 2/3

Product of slope of perpendicular line = -1

[tex]Slope \ of \ line \ b = \dfrac{-1}{\dfrac{2}{3}}=\dfrac{-3}{2}[/tex]

Equation of line b:

[tex]y=\dfrac{-3}{2}x+b[/tex]

Line b passes through (4,7)

[tex]7 = \dfrac{-3}{2}*4+b\\\\\\7= -6 + b\\\\b = 7 + 6\\\\b = 13[/tex]

Equation of line b:

[tex]y=\dfrac{-3}{2}x+13[/tex]

Multiply the  equation by 2

2y = -3x + 26

3x + 2y - 26 = 0

Answer:

D

Step-by-step explanation:

The shaded area is the intersection of the two inner areas of the two circles.

Because the area is inside both circles, the two inequalities must be less than or equal to the equation of the circles.

(If the inequalities are greater than or equal to the equation of the circles, the shaded areas will lie outside the circle.)

Hence, choice D is the correct choice.

It may assist to rewrite the inequalities such that it becomes apparent the equations are indeed less than or equal to the constant:

[tex]\displaystyle x^2 + (y+6)^2 \leq 21 \text{ and } (x+8)^2 + y^2 \leq 84[/tex]

Answer:

D

Step-by-step explanation:

Answer:

i dont know but its $3.00 or $9,00

Step-by-step explanation:

Answer: 12.00 $

Step-by-step explanation: First things first, you need to estimate $3.98 to $4.00.

Then mutiply the $4.00 with 3 because it says 1 pint for $4.00, and you will get $12.00.

Hopfuly this will help ヾ(＠^∇^＠)ノ.

The father would have to push the child approximately 127 times for the child to attain a height of 20feet

Data;

To calculate the number of push required, we have to write an equation to represent this.

[tex]y = 1 + 0.15x[/tex]

y = maximum number of push

x = number of times required to push

[tex]20 = 1 + 0.15x\\20 - 1 = 0.15x \\19 = 0.15x\\\frac{19}{0.15} = \frac{0.15x}{0.15} \\x= 126.6\\x = 127[/tex]

The father would have to push the child approximately 127 times for the child to attain a height of 20feet

Learn more on equations here;

https://brainly.com/question/16863577

Answer:

it increase the area ninefold.

Step-by-step explanation:

Answer:

Slope: 20/7

Y-intercept: 0

Step-by-step explanation:

Hello!

This is a regular graph, and we can find out several things from it, including slope and y-intercept.

The slope is basically how steep or flat the line is. The more flat it is, the bigger the slope. The more steep it is, the more smaller the slope. We can find the slope by using rise over run, seeing how many values it rises over how many values it runs over the x-axis.

The y-intercept is basically where the line starts from in the y-axis. The y-axis is a vertical line usually at the left most area.

To find out the slope, we can see the best fit blue line, and we have to find the most accurate slope. In this problem, the line doesn't go through perfectly with the grid at until around (14, 40). Don't get mistaken for (2,5)! It's not an accurate slope. Since it goes UP and rises 40 and 'runs' 14 units, the slope is that but simplified.

\frac{40}{14} =\frac{20}{7}

The y-intercept is where the line starts from the y-axis, where it labels 'cars'. As you can see, the blue line starts at zero, so there is no y-intercept.

To take it further, the equation of the line is y=mx+b, where m is the slope and b is the y-intercept. In this problem, the equation would be

y=[tex]\frac{20}{7}[/tex]x.

Hope this helped!

Answer:

this guy is half right

Step-by-step explanation:

0 is right but not 20/7

2 cups of water

solving steps:

20 cups of water →  10 cups of rice

rearrange the following

10 cups of rice → 20 cups of water

divide both sides by 10

1 cup of rice → 2 cups of water

Answer:

2 cups of water

Step-by-step explanation:

Given ratio for a batch of rice:

water : rice = 20 : 10 (cups)

Let x = cups of water needed for 1 cup of rice:

⇒ 20 : 10 = x : 1

write as fractions:

⇒ 20 / 10 = x / 1

cross multiply:

⇒ 20 × 1 = x × 10

⇒ 20 = 10x

solve for x:

⇒ x = 20/10

⇒ x = 2

Therefore, 2 cups of water are needed for 1 cup of rice.

Answer:

x = 3 inches

Step-by-step explanation:

Let x = the side of the original square, so the area is x²

After increasing, the side becomes x + 6. so the area becomes (x + 6)²

The area is multiplied by 9 means

(x + 6)² = 9 * x²

Take a square root, get

x + 6 = 3 * x

2x = 6

x = 3 inches

Let L represent the side length of the original square.

Note that:

1. Square root both sides:

2. Simplify the RHS:

3. Subtract L from each side.

4. Divide 2 both sides.

=> 81 ÷ 9 = 9 (True)

This shows that the area of the original square is 9 times smaller than the increased square.

Answer:80,00

Step-by-step explanation: got this answer from someone else on Brainly let me know if it is right

a. 2020-2010=10 185000-150000=350000 35000:10=3500 (population growth per year) 3500:365=9 (growth per day) 9:24=0.375(growth per hour)

b. 2020-2010=10 185000-150000=350000 35000:10=3500 250000-185000=65000 65000:3500=18 2020+18= 2038

Hey there!

8^2 ÷  4^2 - 36 ÷  9

= 8 × 8 ÷ 4 × 4 - 36 ÷ 9

= 64 ÷ 16 - 36 ÷ 9

= 4 - 36 ÷ 9

= 4 - 4

= 0

Therefore, your answer is: 0

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Considering the vertex of the graph, it is found that the quadratic function that is the best model for the data is given by:

[tex]y = -200(x - 4)^2 + 800[/tex]

The equation of a quadratic function, of vertex (h,k), is given by:

[tex]y = a(x - h)^2 + k[/tex]

In which a is the leading coefficient.

Researching the problem on the internet, it is found that the vertex is at point (4,800), hence h = 4 and k = 800.

[tex]y = a(x - 4)^2 + 800[/tex]

It has a value of y = 0 at x = 6, hence:

[tex]0 = a(6 - 4)^2 + 800[/tex]

[tex]a = -200[/tex]

Thus, the model is:

[tex]y = -200(x - 4)^2 + 800[/tex]

More can be learned about quadratic functions at https://brainly.com/question/24737967

Answer:

1350

Step-by-step explanation:

Cube is made with 6 squares. That means once you find the area of one face, you can multiply it by 6.

Area of one square = 15 x 15 = 225

SA= 6 x 225 = 1350 cm^2

2.5d ≤ 80

d ≤ 160 / 5

d ≤ 32

card will last 32 days

Answer:

A.

Step-by-step explanation:

This equation has no solution.

Answer:1

Step-by-step explanation:

just plug them in

we know x =2

so in where ever it says x, we put in 2

y=3(2) -5

Answer:

y= 1

Step-by-step explanation:

y= 3x -5

To find the value of y when x= 2, replace x with 2 in the equation.

When x= 2,

y= 3(2) -5

y= 6 -5

y= 1

Answer:

240%

Step-by-step explanation:

100 x (425 - 125) / 125