hello pls help me need ​

Answer: x = 45

Step-by-step explanation:

Given information

Tina's age (now) = 15 years old

Carl's age (now) = x years old

Ratio of age (3 years ago) = Tina : Carl = 2 : 7

Set equation according to the given information

(15 - 3) / (x - 3) = 2 / 7

Cross multiply

7 (15 - 3) = 2 (x - 3)

Simplify by subtraction in the parentheses

7 (12) = 2 (x - 3)

Simplify by multiplication

84 = 2 (x - 3)

Divide 2 on both sides

84 / 2 = 2 (x - 3) / 2

42 = x - 3

Add 3 on both sides

42 + 3 = x - 3 + 3

[tex]\boxed{x=45}[/tex]

Hope this helps!! :)

Please let me know if you have any questions

Answer:

x = 45

Step-by-step explanation:

Let the present age of Carl be x.

Given Tina's present age is 15 and 3 years ago, the ratio of Tina's and Carl's ages was 2:7

Then 3 years ago, Tina's age will be

[tex] \\ 15 - 3 = 12 \: years[/tex]

and, Carl's age will be x - 3

and they are in the ratio 2:7.

therefore,

[tex] \\ \: \: \: \: \: \: \: \: 12 \ratio(x - 3) = 2 \ratio7[/tex]

[tex] \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{12}{x - 3} = \frac{2}{7} [/tex]

[tex] \\ \sf \: by \: cross \: multiplication[/tex]

[tex] \\ \: \: \: \: \: \: 12 \times 7 = 2(x - 3) [/tex]

[tex] \\ \: \: \: \: \: \: x - 3 = \frac{84}{2} = 42[/tex]

[tex] \\ \: \: \: \: \: \: \: \: \: \: \: \: x = 42 + 3[/tex]

[tex] \\ \: \: \: \: \: \: \: \: \: \: \: \: \therefore \: \: x = 45[/tex]

Answer:

D. 918-y=3 Because y is equal to 915 for all values of x

Answer:

-1.1

Step-by-step explanation:

3.1 - 1.3 = t + 2.9

t = 3.1 - 1.3 - 2.9

t = -1.1

Answer:

t = -1.1

Step-by-step explanation:

[tex]3.1 - 1.3 = t + 2.9 \\ 1.8 = t + 2.9 \\ 1.8 - 2.9 = t \\ - 1.1 = t [/tex]

Answer:

Step-by-step explanation:

x = 75°

75° + 75° + a = 180°

a + 150° = 180°

a = 180° - 150°

a = 30°

y + 30° = 90°

y = 90° - 30°

y = 60°

I hope I've helped you

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The required values are ~

[tex] \boxed{x = 75 \degree}[/tex]

and

[tex] \boxed{y = 60 \degree}[/tex]

[tex] \large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}[/tex]

As it's shown in the figure, the sides opposite to x and Angle 75° are equal. So the corresponding Angles are also equal to one another.

that is ~

I have taken an angle and marked it as " m " in the attachment.

So, according to Angle sum property of a triangle,

now, it's given that the sum of Angle y and Angle m is 90°

hence,

Answer:

[tex]\boxed{\boxed{\sf x=12}}[/tex]

Step-by-step explanation:

[tex]\sf \cfrac{5}{2}\:x-7=\cfrac{3}{4}\:x+14[/tex]

Add 7 to both sides:

Now, Subtract 3/4 x from both sides:

Multiply both sides by 4:

Divide both sides by 7:

Answer:

-42 ft

Step-by-step explanation:

Answer:

Hey so I graphed it for you in the picture, It should be between 2 and 3

Answer:

B is the answer

Step-by-step explanation:

Please follow me

Answer:

% Decrease = 19.2 ;     19.2%  

Step-by-step explanation:

% Decrease = (Original Price - New price)/ Original price ×  100

% Decrease = (78 - 63)/78 × 100

 % Decrease = 15/78 × 100

% Decrease = 19.23

hi can i be brainliest this is easy the answer is 27374

Answer:

(2xy)³

Step-by-step explanation:

According to the Power Rule of Exponents:

[tex](ab})^{m} = a^{m}b^{m}[/tex]

We can apply the Power Rule of Exponents to the given exponential expression, 8x³y³, by taking the smallest factor that when cubed (or raised to an exponent of 3), will produce the same results as the original exponential expression.

8 is a perfect cube of 2:  ⇒  2 × 2 × 2 = 2³ = 8

The cube of x is x³:   ⇒  x × x × x = x³

The cube of y is y³  ⇒  y × y × y  = y³

Hence, we can take the least common factors, (2xy) and raise them to the third power:

(2xy)³ = 2³x³y³ =  8x³y³

Therefore, the correct answer is: (2xy)³

[tex]\\ \sf\longmapsto 8x^3y^3[/tex]

We know the rule of exponents

[tex]\boxed{\sf (ab)^m=a^mb^m}[/tex]

Now

[tex]\\ \sf\longmapsto 8x^3y^3[/tex]

[tex]\\ \sf\longmapsto 2^3x^3y^3[/tex]

[tex]\\ \sf\longmapsto (2xy)^3[/tex]

[tex]\\ \sf\longmapsto (2xy)(2xy)(2xy)[/tex]

Answer: 6 feet

Step-by-step explanation: 12 x6 =72 or 72/12 =6

Answer:

1: a. x=120, b. x=19, 2: mOPR=137, mSRQ=140, mPQT=83

Step-by-step explanation:

1.

a. since x is an exterior angle, we know x is the sum of the other 2 interior angles. the box in the corner means that angle is a right angle, or 90 degree angle. so x = 90 + 30, s=120

b. again, 103 is an exterior angle so 103 = 47-x +2x+38. simplify to get 103 = x+84, so x=19

2.

OPR is an exterior angle so mOPR = mPQR + mPRQ, or  2y+15 = 97 + y-21. simplify and solve for y to get y=61. plug this into 2y+15 to get mOPR = 137.

because SRQ is an exterior angle, it equals RPQ + PQR. first we need to find RPQ. since PQR is a triangle, PQR + PRQ + RPQ = 180. PRQ = y-21 = 40. so RPQ=180-97-40 = 43. so SRQ = 43+97 = 140. (you could also use the fact that PRQ + SRQ = 180)

the exterior angles added up together = 360, so OPR + SRQ + PQT = 360. plug in the known values to get PQT = 360 - 137 - 140 = 83

Answer:

x=8

Step-by-step explanation:

3(10-x)=6

30-3x=6

-30. -30

-3x/-3= -24/-3

Divide -3 to both sides

x=8

Brainliest please

Hope this helps :D

Answer:

The submarine would be 900 below the ocean surface after 12 minutes assuming it started its descent at the surface of the ocean.

Step-by-step explanation:

The formula for distance traveled (in this case the distance a submarine descends) over a period of time is:

d

=

r

⋅

t

where

d

is the distance traveled (or descended),

r

is the rate of travel and

t

is the time.

In this problem we are told the rate,

r

is 75 feet per minute. And, we are told the time,

t

, to calculate for which is 12 minutes.

Answer:

A) 25. 5 x 5 or 5^2 = 25

B) -4. -2 x -2 or -2^2 = -4

C) 0.25. 0.5 x 0.5 or 0.5^2 = 0.25

Step-by-step explanation:

Answer:

a) x2=5*5=25

b)y2=(-2)*(-2)=4

c)z2=0.5*0.5=0.25

Answer:

It is the first one. A 3/4 / x  =  1mile/ 5280 ft.

Step-by-step explanation:

Answer:

is the first one. A 3/4 / x  =  1mile/ 5280 ft.

Step-by-step explanation:

Answer:

Step-by-step explanation:

y = 5x

y = x + 30

Substitute y = 5x in second equation:

5x = x+ 30

4x = 30

x = 7.5.

and y = 5*7.5 = 37.5.

9514 1404 393

Answer:

  w = ms +10e

Step-by-step explanation:

The basic idea is to undo what is done to w. Here, 10e is subtracted, and the difference is divided by m. We undo these in reverse order. To undo the division, we multiply by m. To undo the subtraction, we add the quantity that was subtracted. Any operation that we perform must be done to both sides of the equation.

  [tex]s = \dfrac{w - 10e}{m}\qquad\text{given}\\\\ms=w-10e\qquad\text{multiply by $m$}\\\\ms+10e=w\qquad\text{add $10e$}[/tex]

Usually, you want to write that with w on the left:

  w = ms +10e

Answer:

solution 25 over 2

Step-by-step explanation:

Answer:

x=12.5

Step-by-step explanation:

Solution,

8x +80 = 180

or, 8x = 180-80

or, x = 100/8

or, x = 12.5

.:. x = 12.5

Answer:

2(x+7) = 2x+14 / 3(x+1) = 3x+3

Step-by-step explanation:

When you  see equations with parenthesis, that means you must do distributive property. So, whatever number is outside of the parenthesis, you multiply it by all the number inside of the parenthsis.

Answer:

6x² + 48x + 42

Step-by-step explanation:

2(x + 7) 3(x + 1) ← multiply the integers

= 6(x + 7)(x + 1) ← expand factors using FOIL

= 6(x² + 8x + 7) ← distribute parenthesis by 6

= 6x² + 48x + 42

Answer:

The slope is [tex]-\frac{5}{6}[/tex]

Step-by-step explanation:

Hi there!

We are given two points: (10, 63) and (94, -7)

We want to find the slope that passes through these lines

We can use the slope formula to find it

The formula for slope calculated from two points is [tex]\frac{y_2-y_1}{x_2-x_1}[/tex], where [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] are points

We have everything needed to find the slope, let's just label their values to avoid confusion:

[tex]x_1=10\\y_1=63\\x_2=94\\y_2=-7[/tex]

Now substitute these values into the formula:

m=[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

m=[tex]\frac{-7-63}{94-10}[/tex]

Subtract the numbers:

m=[tex]\frac{-70}{84}[/tex]

Divide:

m=[tex]-\frac{5}{6}[/tex]

The slope of the line is [tex]-\frac{5}{6}[/tex]

Hope this helps!

Step-by-step explanation:

Example, i have 1 equation and i want to find x

2x - 1 = 5

2x = 5 + 1

2x = 6

x = 6/2

x = 3

So, value of x is 3

Answer:

If bought online, 2 If bought in person, 5

Step-by-step explanation:

Answer:

Assuming he is buying online, he can invite 4 friends plus himself.

Explantation:

Tickets for four friends

2.50 x 4 = 10

The he adds himself

10+ 2.50= 12.50

Then he adds the flat fee

12.50+2= 14.50

Answer:

4)

Step-by-step explanation:

I think that you meant slope of 9/4. Number 4 would be correct because slope intercept form would be y=mx+b, where m is the slope and b is y intercept. Since b=0, you don't have to add anything, so it would just be y=9/4x

Answer:

4) [tex]y=\frac{9}{4}x[/tex]

Step-by-step explanation:

This is a linear equation in slope-intercept form:

[tex]y=mx+b[/tex]

where m is the slope and b is the y-intercept.

1) [tex]y=\frac{9}{4}y[/tex] --- this is just a false equation that cannot be a line.

2) [tex]y=x+\frac{9}{4}[/tex] --- this is a line with a slope of 1 and a y-intercept of 9/4

3) [tex]x=\frac{9}{4}x[/tex] --- this is also false

4) [tex]y=\frac{9}{4}x[/tex] --- this is a line with a slope of 9/4 and a y-intercept of 0.

Taxable income is a person's gross income minus allowable deductions.

The correct option is B.

As, Any gross income that is used to determine how much tax you owe is referred to as taxable income.

This is equal to your AGI less the total of either your itemized deductions or the standard deduction, whichever is greater, and, if available, the qualifying business income deduction.

So, Taxable income is a person's gross income minus allowable deductions.

Thus, the ideal solution is B.

Learn more about Taxable income here:

https://brainly.com/question/17961582

#SPJ7

Answer:

9 1/12

Find LCM for denominators

then add

boom!

9 1/12

Have a nice day!

Please give brainliest :D

Answer:

9 1/12

or

109/12

Step-by-step explanation:

Hope this helps!

Answer:

perennials in education