Solving by substitution- Day 1
solve the following system of equations y=9x-9 y=9

Answer:

205.45ㅤㅤㅤㅤㅤㅤㅤㅤ

Answer:205.45

Step-by-step explanation:

821.8 / 4 = 205.45

Answer:

Step-by-step explanation:

LOL

Step-by-step answer:  

5(12×11)-(5^5)+9

5(12×11)-3,125+9

5(144)-3,125+9

720-3,125+9

-2,405+9

-2,396

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There are 3 kilograms weight must be removed from the first case and placed in the second is that they both equal.

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

Fruit weight = 53 kilograms

And, Another weight = 47 kilograms

Now,

Let number of kilograms weights to remove and add = x

So, We can formulate;

⇒ 53 - x = 47 + x

Solve for x as;

⇒ 53 - 47 = x + x

⇒ 6 = 2x

⇒ 2x = 6

⇒ x = 3

Thus, There are 3 kilograms weight must be removed from the first case and placed in the second is that they both equal.

Learn more about the subtraction visit:

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Answer:

Step-by-step explanation:

x>-2

Becuase multiply it and divide

Hi there! I'm here to help. :)

Okay, so here you are solving for x. To solve for x, you must get it alone on one side of the equal sign. As we can see, it is not alone, and it is with 1 1/4 on the left side of the equal sign.

To get it alone, we need to subtract 1 1/4 from both sides. However, to subtract fractions, we need to make sure they have the same denominator. Looking at the fractions, we can see that they have two different denominators.

Begin by converting both fractions into improper fractions:

1 1/4 = 5/4

3 1/2 = 7/2

So now our equation looks like this: x + 5/4 = 7/2

Now we need to make it to where we our fractions have the same denominator.

Our current denominators are 4 and 2. The LCM (lowest common multiple) of 4 and 2 is 4, so you leave 5/4 as it is (because it's denominator is already 4) and you change 7/2.

Multiply 2 * 2 to make the denominator 4 in 7/2, but whatever you do to the denominator, you MUST do to the numerator. So multiply 7 * 2 = 14. Now your fraction looks like this: 14/4

Now we have:

1 1/4 = 5/4

3 1/2 = 14/4

Our denominators are the same now! Now here comes the easy part: We subtract! Do 3 1/2 - 1 1/4, or, 14/4 - 5/4. To subtract fractions, simply subtract the numerators and leave the denominators as is. 14 - 5 = 9, so 14/4 - 5/4 = 9/4.

Now our equation looks like this:

x = 9/4

LASTLY: All of your options are mixed numbers, so convert this improper fraction back into a mixed number. 9/4 = 2 1/4.

So, x = 2 1/4. :)

Answer:

start  by checking that it's a linear relationship that's occurring by having a look at the difference in our X in each step against the difference in our Y in each step.

Step-by-step explanation:

Answer:

[tex]4(3x - 1)[/tex]

Step-by-step explanation:

[tex]9x - 4 + 3x[/tex]

Adding 9x & 3x gives 12x.

[tex] = > 12x - 4[/tex]

Now taking 4 common from both the terms , we get :-

[tex]4(3x - 1)[/tex]

Answer:

8.5

Step-by-step explanation:

Because I used a calculator

The square root of 72 is 8.48528137424 ...

The hundredths digit (8) rounds up.

So the square root of 72 rounded to the nearest tenth is 8.5.

Now you can multiply this to see if the product is near 72.

8.5 times 8.5 is 72.25.

Answer:

the money left after purchasing the purse is $111

Step-by-step explanation:

The computation of the money left after purchasing the purse is given below:

Since in the question it is mentioned that she bought a purchase with one-fourth of money

And, the purse cost is $37

So the amount left would be

= $37 × (3 ÷ 4) ÷ (1 ÷ 4)

= $37 × 0.75 ÷ 0.25

= $111

Hence, the money left after purchasing the purse is $111

The Answer Is:

B (0.21)

Answer:

b

Step-by-step explanation:

area = pie x radius(2)

         = 3.142 x 13 (2)

          = 530.998

Answer:

Scale Factor [tex]= 5540[/tex]

Step-by-step explanation:

As we know -

Scale  scale factor [tex]= \frac{L_p}{L_m}[/tex]

[tex]L_p =[/tex] Length of Actual object

[tex]L_m =[/tex] length of the model

Substituting the given values in above equation we get

Scale factor

[tex]= \frac{44317.92}{8} \\= 5539.74\\=5540[/tex]

Answer:

yea its right here

Step-by-step explanation: sike

Answer:

Option D : Undefined

Step-by-step explanation:

Given points (-5,8) and (-5,3) lies on a line.

Slope of a line is given by:

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

[tex]m = \frac{3-8}{-5-(-5)}\\\\m=\frac{-5}{0}[/tex]

Anything divided by zero is undefined.

Therefore,

Option D is the correct answer.

Answer:

[tex]37.7\ \text{foot}[/tex]

Step-by-step explanation:

The length of the edging will be equal to the circumference of the circular flower garden.

Here, the diameter of the circular garden is [tex]d=12\ \text{foot}[/tex]

Circumference of a circle is given by

[tex]C=\pi d\\\Rightarrow C=3.14\times 12\\\Rightarrow C=37.68\approx 37.7\ \text{foot}[/tex]

The length of the edging is [tex]37.7\ \text{foot}[/tex].

Answer:

Step-by-step explanation:

If Gary's age is 14 then

Ash is 4 years younger = 14 - 4 = 10

And Oak is 5 times Gary's age = 14 x 5 = 70

So total ages = 70 + 14 + 10 = 94

Answer:

Sorry if I am wrong don´t count on me tho I would wait until someone else answers cause I might be wrong.

1). 9

2). -2

3). i don´t know

4). i don´t know

Step-by-step explanation:

Sorry plz don´t be mad I´m only in 4th grade

Answer:

Don't wanna do math :(

Step-by-step explanation:

Answer:

Option 3

Step-by-step explanation:

the symbol your question is showing is "greater than or equal to"

when a line includes "or equal to", the circle will be filled in. also, since the symbol is going towards 5, it is considered a greater than symbol. so, you'd want to choose the option with a filled in circle and an arrow pointing to the right.

since option 3 has a filled in circle and has its arrow pointing towards the positive (or right) side of the line, it should be option 3.

Answer: 16 ounce

Step-by-step explanation:

16 ounce is 1.17 per ounce but 7 ounce is 1.19 per ounce in real life the bigger is usually a better deal anyway

Answer:

YOOOOOOOOOOOOOOOOOOO AAAAAAAAAAAAAAAAAH the answer is 16 ounce

Step-by-step explanation:

Bom bam bop ignore this

Answer:

4 my good sir

Step-by-step explanation:

Two factors could be, 0.144 and 5

Answer:

16,200

Step-by-step explanation:

180 x 90 = 16,200

Answer:

(2x8)+(3x10)

Step-by-step explanation:

Answer: The denominator of the rational exponents represents the index of a rule and the numerator of the rational exponent represents the power of the base.

(sqrt 9)^5= 243

Answer: The required scale factor[tex]=\dfrac43[/tex]

Step-by-step explanation:

Formula : [tex]\text{Scale factor }=\dfrac{\text{Side in image}}{\text{Corresponding side in pre-image}}[/tex]

Here, ED = 3 units  in Δ DEF which corresponding to SR = 4 units in ΔRST

Now,

Scale factor for the given transformation = [tex]\dfrac{SR}{ED}[/tex]

[tex]=\dfrac{4}{3}[/tex]

hence, the required scale factor[tex]=\dfrac43[/tex]