3+0.5(4x + 8) = 9-2x

Answer:

50 Years

Step-by-step explanation:

175.5 million (The difference) divided by 3.51 million equals 50.

This are the right steps

Step 1: first you divide the both size by 7 because there is 7 a's

7a/7 = 28/7

Step 2: You solve the equation

7a/7= a. 28/7 = 4

So, the answer is a = 4

not 7 = 4

Carly did a mistake in Step 1, as she divides the two sides of the equation by different quantities (she divided the left side of the equation by a and the right side of the equation by 7), but we are supposed to follow the same operations on both sides of the equation. Hence, option A: Step 1 is the right choice.

To solve linear equations in one variable, we isolate the variable to one side of the equation and simplify the other side to get the solution for the equation.

In the process of isolation, the operations performed on one side of the equation have to be performed on the other side too.

In the question, we are informed that Carly tried to solve an equation step by step. 7a=28 Step 1: 7a/a = 28/7 Step 2: 7 = 4.

We are asked to find the mistake that Carly did in solving the equation.

We first try to solve the equation: 7a = 28.

Step 1: 7a/7 = 28/7 {Dividing both sides by 7}

Step 2: a = 4 {Simplifying}.

Thus, we can see that Carly did a mistake in Step 1, as she divides the two sides of the equation by different quantities (she divided the left side of the equation by a and the right side of the equation by 7), but we are supposed to follow the same operations on both sides of the equation. Hence, option A: Step 1 is the right choice.

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This triangle is isosceles. The bottom 2 angles are the same.

180= 54+2y

126=2y

y=63

Answer:follow key h!gh on tik tok

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Rise over run

n+8<13

n=4

If n=4, then n+8 is equal to 4+8.

4+8=12

12<13

True

hope it helps!

Answer:

12 < 13

Step-by-step explanation:

n = 4

n + 8 < 13

4 + 8 < 13

12 < 13

Answer:

1.8

Step-by-step explanation:

3 * 0.6 = 1.8

Step-by-step explanation:

(hog)(x) = h(g(x))

= h(3x + 7)

h(x) = x + 8

h(3x + 7) = 3x + 7 + 8

h(3x + 7) = 3x + 15

(hog)(x) = 3x + 15

An expression that is equivalent to 3(5x-4) is: D. 15x-12.

The distributive property of multiplication states that when the sum of two (2) or more addends are multiplied by a given numerical value or factor, the same output would be produced as when each addend is multiplied respectively by the numerical value or factor, and the products are added together.

Mathematically, the distributive property of multiplication is given by this expression:

a(b + c) = ab + ac.

By applying the distributive property of multiplication to the given expression, we have:

3(5x - 4) = 3(5x) - 3(4)

3(5x - 4) = 15x - 12

Therefore, the correct answer option is: D.) 15x - 12.

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Complete Question:

Which expression is equivalent to 3(5x-4)

A 8x-4

B 8x-1

C 15x-4

D 15x-12

Answer:

-50 feet

Step-by-step explanation:

The trout is swimming 30 ft below sea level,if it were above sea level it would be positive but since its below it is negative. It then swims 20 feet lower so it would be -50 as a short cut you can use in problems like this one is to ignore the sign's and add it regularly then add the sign after the equation is done.

Answer:

-50 is the answer

Step-by-step explanation:

Answer:

an acute angle

Step-by-step explanation:

acute angles measure 0-89 degrees

Answer:

acute angle

hope it helps;)

Answer:

you can make 6 omelets

Step-by-step explanation:

18/3 = 6

Answer:

The perimeter is quadrilateral Q is 3 times the perimeter of quadrilateral P.

Step-by-step explanation:

Using a scale factor of 3, every dilated side is 3 times longer then the original side. Then, the perimeter is also 3 times greater.

The perimeter is quadrilateral Q is 3 times the perimeter of quadrilateral P.

The perimeter of a shape is the sum of its side lengths. The perimeter of quadrilateral Q is 186 units

The sides of quadrilateral P (see attachment) are:

[tex]Sides = \{7, 15, 15, 25\}[/tex]

So, the perimeter of P is:

[tex]P_p = 7 + 15 + 15 + 25[/tex]

[tex]P_p = 62[/tex]

Given that:

[tex]k = 3[/tex] --- the scale factor from P to Q

This means that the sides of Q are 3 times the sides of P. So, the perimeter of Q will also be 3 times the perimeter of P

So, we have:

[tex]P_Q = P_p \times k[/tex]

This gives

[tex]P_Q = 62 \times 3[/tex]

[tex]P_Q = 186[/tex]

Hence, the perimeter of Q is 186 units

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Answer:

exact form:

[tex]x=\frac{11}{5}[/tex]

Decimal:

[tex]x=2.2[/tex]

Mixed Number Form:

[tex]x=2\frac{1}{5}[/tex]

Step-by-step explanation:

simplify [tex]2(x + 6) + 4[/tex]

[tex]2(x + 6) + 4 = 12x - 6[/tex]

Move all terms containing  x  to the left side of the equation.

[tex]-10x+1=-6[/tex]

Move all terms not containing  x  to the right side of the equation.

[tex]-10x=-22[/tex]

Divide each term by  − 10  and simplify.

[tex]x=\frac{11}{5}[/tex]

the result can be shown in multiple forms

Exact Form: [tex]x=\frac{11}{5}[/tex]

Decimal Form: [tex]x=2.2[/tex]

and Mixed Number Form: [tex]x=2\frac{1}{5}[/tex]

Answer:  The numbers are 172  and 43

Step-by-step explanation:

We will represent the numbers by x and y  

where x is the positive number and y is the other number.

So x the positive number is 4 times the other number which could be represented by the equation x = 4y  

And the difference between x and y is 129  which could also be represented by the equation  x - y = 129  

Now use both equations to solve for y and x  

x = 4y  

x-y = 129   Substitute the value for x into the second equation

4y - y = 129

 3y = 129  

   y =  43  so we know that y is 43  and  x is 4 times it

x = 4(43)

x= 172  

So the numbers are 172 and 43 .

Check:

172 - 43 = 129

   129 = 129

Answer:

Step-by-step explanation:

First of all, your question is very clear. Excluding 0 is a needed restriction.

f(1) = 3*1 + 1 = 3 + 1 = 4

f(2) =3*2 + 1 = 6 + 1 = 7

f(3) = 3*3 + 1 = 9 + 1 = 10

f(4) = 4*3 + 1 = 12 + 1 = 13

4,7,10,13

Notice that you are just adding 3 to the previous term.

Answer:

Length = 6.1 inches and Width = 3.4 inches

Step-by-step explanation:

We are told that the diagonal measures 7 inches.

We are also told that the length of the screen is 2.7 inches more than the width.

Let the length be L and width be W.

Thus, L = W + 2.7

Now, since length = W + 2.7 and width = W and diagonal = 7 inches, we can use pythagoras theorem to solve.

Thus;

W² + (W + 2.7)² = 7²

W² + W² + 5.4W + 7.29 = 49

2W² + 5.4W - 41.71 = 0

Using quadratic formula, we have;

W = [-5.4 ± √(5.4² - 4(2 × -41.71))]/(2 × 2)

W = [-5.4 ± √(362.84)]/4

W = -5.4/4 ± 19.05/4

W = (-1.35 + 4.7625) or (-1.35 - 4.7625)

W ≈ 3.4 inches or -6.1

W cannot be negative, thus, W = 3.4 inches

From earlier, we saw that L = W + 2.7

Thus,L = 3.4 + 2.7 = 6.1 inches

So, Length = 6.1 inches and Width = 3.4 inches

Answer:

False

Step-by-step explanation:

Area is the number of square units it tales to fill the inside of a polygon.

Answer:

m = 0 or slope = 0

Step-by-step explanation:

Answer:

x = 3/8

Step-by-step explanation:

Answer: B

Step-by-step explanation:

To find r, we need to use the formula to find slope. The formula is [tex]m=\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]. Since we are given the coordinates and slope, we can plug them into the formula and solve for r.

[tex]\frac{2}{3} =\frac{3-5 }{r-4}[/tex]               [multiply both sides by r-4]

[tex]\frac{2r-8}{3}=3-5[/tex]        [subtract]

[tex]\frac{2r-8}{3}=-2[/tex]           [multiply both sides by 3]

[tex]2r-8=-6[/tex]        [add both sides by 8]

[tex]2r=2[/tex]                 [divide both sides by 2]

[tex]r=1[/tex]

Now that we found that r=1, we know that the answer is B.

Answer:

2546

Hope this helps

Answer:

0.45 is more

Step-by-step explanation:

:)

The square root of the number is √0.45 = 0.670 is greater than 0.229

Given data ,

Let the first number be represented as p

where the value of p = 0.45

Let the second number be represented as q

where q = 0.229

Now , the square root of the number is expressed as

A = √p

The radical form of a number refers to expressing a number using a radical symbol (√) to represent a root.

It is used to express the roots present in the number.

So , A = √0.45

On simplifying , we get

A = 0.670

And , the value of A > q

So , 0.670 > 0.229

Hence , the square root is A = √0.45 = 0.670

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Answer:

3 divided by (1+2)=1

Step-by-step explanation:

bc u do parthensis first so 1+2 is 3 therfore if u divide 3 by 3 gives u one

Answer:

11/5

Step-by-step explanation:

2x+12+4-12x+6

-10x+22

x=22/10

x= 11/5

22/5+12+4=123/5-6

102/5=123/5-30/5

102/5=97/5

102/5-97/5

5/5

1

Step-by-step explanation:

0.40 ___0.04

We are given with two decimal numbers. Compare the numbers and complete the blank by < or > or =

To compare the decimals , compare each digit from left to right

0 is equal to 0

4 is greater than 0

so we can say 0.40 is greater than 0.04

0.40 > 0.04

Both decimal numbers are not equal

Answer:

0.40 > 0.04

Answer:

$98.55

Step-by-step explanation:

Answer:

he has to pay 108.55

Step-by-step explanation: