Solve the equation x2 + + 7x= 30
O A. x= 15 and x= -2
0 B x=-6 and x = 5
0 C x= -10 and x= 3
O D. x= 10 and x= -3

Answer:

1. yes , 1:1.25

2. no

3. Because the ratio between the width of rectangle a along rectangle a is 3: 2 and also in rectangle b the ratio between the width of rectangle along rectangle is 3: 2 but the ratio between width of rectangle c along rectangle c is 2: 1

Answer:

Arithmetic

Step-by-step explanation:

Since the common difference remains the same between terms, its arithmetic!

The first five terms of the given AP is 8, 20, 32, 44 ,56.

A sequence is a list of numbers written in form of a constant difference or ratio.

According to the given question the given question the first term (a₁) of the AP is 8 and the common difference (d) is 12.

This is an AP because given in the question it self of common difference.

We know than n term of an AP is aₙ = a₁ + (n-1)d.

Given,

a₁ = 8.

a₂ = 8 + (2-1)12

a₂ = 8 + 12

a₂ = 20.

Similarly.

a₃ = 32.

a₄ = 44.

a₅ = 56.

learn more about AP here :

https://brainly.com/question/16947807

#SPJ2

Answer:

2

Step-by-step explanation:

plug in the answer

The value of x from the given angles is 6.3.

Given that, m∠4=(10x+5)° and m∠5=(20x−15)°.

Angles in parallel lines are angles that are created when two parallel lines are intersected by another line called a transversal.

From the figure given below,

m∠4+m∠5 = 180° (Adjacent angles adds upto 180 degree)

⇒ (10x+5)°+(20x−15)° = 180°

⇒ 10x+20x+5-15 = 180°

⇒ 30x-10 = 180°

⇒ 30x=190

⇒ x=190/30

⇒ x=6.3

Therefore, the value of x from the given angles is 6.3.

To learn more about the adjacent angles visit:

https://brainly.com/question/12838185.

#SPJ5

Answer:

4:10, 2:5 16:40

Step-by-step explanation:

just multiply or divide

Answer:

y=1/3x + 2

Step-by-step explanation:

the y intercept is 2, and the second point goes up 1 over 3

rise over run

Answer:

16

Step-by-step explanation:

4 1/4

8 1/4

12 1/4

16 1/4

Answer:

256

Step-by-step explanation:

brainlist?

Answer: D 1 hour 56 minutes

Answer:

D. 1 hour 56 minutes

Step-by-step explanation:

Well, if you add 2 hours to 12:14, it would be 2:14, so you know it's less than 2 hours. B and D are the only choices that have 1 hour. So, if Aaron left at 2:10, you have to subtract 4 minutes from 2 hours. That would be 1 hour and 56 minutes Aaron spent at the mall.

I hope you understood!! (It's ok if you didn't get it...some things can seem complicated at first!) Have an amazing day C:

Answer:

11.9

Step-by-step explanation:

just add the two numbers :)

Answer:

the answer 11.9

Step-by-step explanation:

add by lining up the decimals

Answer:

21

Step-by-step explanation:

1. (-4)2= 16

2.15/(-3)= 5

3. 16+5=21

Answer:

11

Step-by-step explanation:

First do -4^2

Then divide -15 and -3

Then 16-5

11

Answer:

I think its d if I remember correctly

Answer: D tenths

Step-by-step explanation:

when you go past the decimal you start by counting tenths, hundredths, thousands and so on

Answer:

8X = 96 inch

Step-by-step explanation:

How its in the draw you have this situation then the equation that model is the next one:

2*(3X) + 2*X = 96 inch

6X + 2X = 96 inch

8X = 96 inch

We must multiply due that there is two sides that measure the same.

Answer:

8X = 96 inch

Step-by-step explanation:

Answer:

I believe its true, Im reallly sorry if its wrong

Step-by-step explanation:

Answer:

The biker is traveling at [tex]5\frac{1}{3}[/tex] miles per hour.

Step-by-step explanation:

To find the rate, in miles per hour, you must use the formula r = d/t.

(r = rate)

(d = distance)

(t = time)

[tex]\frac{8}{3}[/tex] ÷ [tex]\frac{1}{2}[/tex] = [tex]5\frac{1}{3}[/tex]

Answer:

2. z = 1 - 2·i    →    √5

3. z = 4 + 3·i   →      54

4. z = 6 - 8·i    →     10

1. z = √5 - i      →    √6

Step-by-step explanation:

1. z = √5 - i

The distance from the origin = √((√5)² +1²) = √(5 + (-1)²) = √6

Therefore, z = √5 - i → √6

2) z = 1 - 2·i

The distance from the origin = √(1² + (-2)²) = √5

Therefore, z = 1 - 2·i → √5

3) z = 4 + 3·i

The distance from the origin = √(4²+3²)) = √(16 + 9) = √25 = 5

Therefore, z = 4 + 3·i → 5

4) z = 6 - 8·i

The distance from the origin = √(6²+8²)) = √(36 + 64) = √100= 10

Therefore,  z = 6 - 8·i →  10

Answer:1.99

Step-by-step explanation:

520 × 7.65= 39.78

546 × 7.65 = 41.77

41.77 - 39.78 =1.99

Answer:

a - 8^2

b-2^8

c-4^2

d-2^4

Answer:

The first on the left is the last one on the right, the second on the left is the second on the right, the third on the left is the third on the right, and the fourth on the left is the first on the right. Hope this helps.

Step-by-step explanation:

Answer:

Damon is 18, Damon's brother is 11 years old.

Step-by-step explanation:

So, the total age of them both is 29. Damon is 7 years older, so we use 29-7=22. Now, 22 is Damon's brother's age times 2, so we use 22/2=11. 11 is Damon's age is 11+7=18, and His brothers age is 11.

Answer:

daman's age = (7+x)

let his brother's age be 'x'

according to the question,

(7+x) + x =29

7+x+x = 29

2x = 29 - 7

2x = 22

x = 22÷2

x = 11 = age of daman's brother

age of daman = 7+11 = 18

Answer:

114 red marbles, 6 black marbles.

Step-by-step explanation:

120/20=6

6*19=114

Answer:

x < -8

Step-by-step explanation:

I used a calculator

Answer:

x<-8

Step-by-step explanation:

Let's solve your inequality step-by-step.

122<−2(8x+3)

Step 1: Simplify both sides of the inequality.

122<−16x−6

Step 2: Flip the equation.

−16x−6>122

Step 3: Add 6 to both sides.

−16x−6+6>122+6

−16x>128

Step 4: Divide both sides by -16.

−16x /−16 > 128 /−16

x<−8

Given :

The straight line depreciation equation for  a motorcycle is y = -2,150x + 17,200.

To Find :

a. What is the original price of the  motorcycle? $17,200.00  ?

b. How much value does the motorcycle  lose per year?

c. How many years will it take for the  motorcycle to totally depreciate?

Solution :

y = -2,150x + 17,200.

Here, y is price and x is unit of time in years.

a)

We know, original price is given when x =0.

So, y = 0 + 17,200

y = $17,200.00

b)

Value motorcycle lose per year is coefficient of x i.e $-2,150.00

c)

Form total depreciate :

y = 0

0 = -2,150x + 17,200

x = 17,200÷2,150

x = 8 years.

Hence, this is the required solution.

Answer:

It would be A.

Step-by-step explanation:

You can simply add the numbers to coordinates to see if matches.

For example, if you add the x + 2 to -3 and 2, its -1 and 4. Then if you add y+3 to -1 and 1, it's 2 and 4. I hope that makes sense :)

Answer:glaciers melting, ozone layer getting thinner, 2.5 million trees being burned to the ground.

Step-by-step explanation:

Here all the given equations are in the form of

[tex]ax^2+bx+c=0[/tex]

The value of [tex]x[/tex] can be determined by the perfect square method as follows:

[tex]ax^2+bx+c=0[/tex]

[tex]\Rightarrow x^2+\frac{b}{a}+\frac{c}{a}=0[/tex]

[tex]\Rightarrow x^2+2\times\frac{b}{2a}+\left(\frac{b}{2a}\right)^2-\left(\frac{b}{2a}\right)^2+\frac{c}{a}=0[/tex]

[tex]\Rightarrow \left(x+\frac{b}{2a}\right)^2=\left(\frac{b}{2a}\right)^2-\frac{c}{a}[/tex]

[tex]\Rightarrow x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\;\cdots(i)[/tex]

Now, for [tex]x^2+3x-4=0[/tex]

[tex]a=1, b=3, c=-4[/tex]

So, from equation (i)

[tex]x=\frac{-3\pm\sqrt{3^2-4\times1\times(-4)}}{2\times1}[/tex]

[tex]\Rightarrow x=\frac{3\pm\sqrt{9+16}}{2}[/tex]

[tex]\Rightarrow x=\frac{3\pm5}{2}[/tex]

[tex]\Rightarrow x=\frac{3+5}{2},\frac{3-5}{2}[/tex]

[tex]\Rightarrow x= 4, -1[/tex]

Similarly, for [tex]9x^2+12x+4=0[/tex]

[tex]a=9, b=12, c=4[/tex]

So, from equation (i)

[tex]x=\frac{-12\pm\sqrt{12^2-4\times9\times4}}{2\times9}[/tex]

[tex]\Rightarrow x=\frac{-12\pm0}{18}[/tex]

[tex]\Rightarrow x=\frac{-2}{3}[/tex]

For [tex]x^2-2x-3=0[/tex]

[tex]a=1, b=-2, c=-3[/tex]

[tex]x=\frac{-(-2)\pm\sqrt{(-2)^2-4\times1\times(-3)}}{2\times1}[/tex]

[tex]\Rightarrow x=\frac{2\pm\sqrt{16}}{2}[/tex]

[tex]\Rightarrow x=\frac{2\pm4}{2}[/tex]

[tex]\Rightarrow x=\frac{6}{2},\frac{-2}{2}[/tex]

[tex]\Rightarrow x=3.00, -1.00[/tex]

For [tex]x^2-6x+9=0[/tex]

[tex]a=1, b=-6, c=9[/tex]

[tex]x=\frac{-(-6)\pm\sqrt{(-6)^2-4\times1\times9}}{2\times1}[/tex]

[tex]\Rightarrow x=\frac{6\pm0}{2}[/tex]

[tex]\Rightarrow x=3.00[/tex]

For [tex]2x^2-4x-3=0[/tex]

[tex]a=2, b=-4, c=-3[/tex]

[tex]x=\frac{-(-4)\pm\sqrt{(-4)^2-4\times2\times(-3)}}{2\times2}[/tex]

[tex]\Rightarrow x=\frac{4\pm\sqrt{40}}{4}[/tex]

[tex]\Rightarrow x=\frac{4\pm2\sqrt{10}}{4}[/tex]

[tex]\Rightarrow x=\frac{4+2\sqrt{10}}{4},\frac{4-2\sqrt{10}}{4}[/tex]

[tex]\Rightarrow x=2.58, -0.58[/tex]

Answer:

greater than or equal to 1 and less than 10.

Step-by-step explanation:

The first number in scientific notation must be ...

greater than or equal to 1 and less than 10.

Answer:

There are 15 cows and 35 chickens

Step-by-step explanation:

So first you take 20 and multiply it by two since there are two legs on each chicken. You get 40.

Then you subtract 40 from 130. You get 90.

Since the cow has double the legs of the chicken, you can count the cow as two chicken.

You divide 90 by 3. You get 30.

To get the number of chicken you divide 30 by 2 and you get 15.

You add 15 and 20 together and you get 35 chickens.

To get the number of cows you divide 30 by 2 and you get 15.

So you have your answer. 35 chicken and 15 cows.

Answer: the range is 41, when finding the range you're finding the difference between the largest number and the smallest number so 42-X=1=41

Step-by-step explanation: when finding the domain you're simplifying the number, but since 41 can't be simplified it remains as 41

... The End

Answer:

C (3rd one) is the answer since -5 is the smallest and 3 being the biggest.

Step-by-step explanation:

-5 -2 1 3

Answer:

The answer is the 3rd choice!! In letter options, Option "C"!!!

Step-by-step explanation:

Hope I helped!!! Have great day ahead!!

#StayKind #BeBlessed #ThisGirlBlessed