2x+7y=3 and x=-4y with substitution ?

Answer:

1044

Step-by-step explanation:

Answer:

x=-1 y=-4

Step-by-step explanation:

Answer: V/D = T

Step-by-step explanation:

Answer:

1. q = 3

2. w = 9

Step-by-step explanation:

1.

-2q - 5 = -11

Add 5 to both sides:

-2q - 5 + 5 = -11 + 5

-2q = -6

Divide both sides by 2:

-2q ÷ 2 = -6 ÷ 2

-q = -3

Divide both sides by -1:

-q ÷ -1 = -3 ÷ -1

q = 3

2.

w/3 + 2 = 5

Subtract 2 from both sides

w/3 = 3

Multiply both sides by 3:

w = 9

-Chetan K

Answer:

d= negative 16

Step-by-step explanation:

Answer:

0.1(d-6)=0.15d+2.5-1.5+0.05d

Step-by-step explanation:

Answer:

Which expression is equal to “8 less than the product of y and 9"'?​

Step-by-step explanation:

Answer: 4/10 + 1/5 = 0.6 and  4/10 - 1/5 = 0.2.

Step-by-step explanation:

1. Convert the fractions into decimals by dividing the numerator(the number to the left or top of the fraction) by the denominator(the number to the right or bottom of the fraction.

2. For the first question, add the two decimals to get your answer. For the second question, you subtract. 0.4-0.2.

Answer:

121/144

Step-by-step explanation:

Answer:

x=50

Step-by-step explanation:

50 x 0.4 = 20

Hope it helps

Answer:

75

Step-by-step explanation:

Let n be the unknown number

Answer:

the number is 49

Step-by-step explanation:

first, write an equation based on the words

4 increased by= 4+

three fifths of a number = [tex]3/5 * n[/tex]

is 49: =49

now, put it together: [tex]4 + 3/5*n=49[/tex]

Now, solve

4 + 3/5*n=49

4-4=0   49-4= 45

3/5*n=45

3/5*n / 3/5= n    45/ 3/5= 75

n=75

hope this helps:)

please crown me brainliest!!!

Answer:

5 plus 15 is 20 and then subtract 10 it will become 10 then add 20 it became 30 then subtract 15 it will become 15 then add 25 to 15 answer 40

Step-by-step explanation:

the numbers are repeated again and again like we added 5 to 15 we got 20

then later we added 20 to 10 it became 30

Answer:

Z (0.10) = 1.282 (the Z-score which has 0.10 to the right, and 0.4000 between 0 and it). As a shorthand notation, the () are usually dropped, and the probability written as a subscript.

Step-by-step explanation:

hope this helped you if it did plz mark brainliest

Answer:

G=7

Step-by-step explanation:

Answer:

x=2

Step-by-step explanation:

first you distribute the two on the left side of the equation and get 2x+10= -10x+34. Then add 10x to both sides of the equation to get 12x+10=34. Then subtract 10 from both sides of the equation to get 12x=24. finally divide both sides of the equation by 12 and get x=2

Answer:

Explanation:

The number 43 is basically 40+3

We read "43" as "forty three", in which you can think of having 40 and then an additional 3 on top of that to get 40+3 = 43 overall.

As for the decimal portion, we do the same sort of thing.

The 0.205 breaks up into 0.2 + 0.005

0.2 = 2 tenths

0.005 = 5 thousandths

So that's why 43.205 breaks down into 40+3+0.2+0+0.005; each place value digit corresponds to a term in that expanded sum.

Answer:

Step-by-step explanation:

This function has a minimum value at vertex (3, -1) and maximum value is infinity.

I also don't know mannn!lol

Answer:

[tex]15 \10 kg\times 1000g = 1500g[/tex]

Answer:

the pitch of the roof is 24ft²

Step-by-step explanation:

Formula: 1/2(b×h)

Given: b=4, h=12

> 1/2(4×12)

> 1/2(48)

> 24

Answer:

3/7 scaled both the numerator and denominator down by 10

Step-by-step explanation:

30/10 = 3 70/10 = 7

3/7

Answer:

347 maybe

Step-by-step explanation:

772 ‐ 78

= 694

694/2

= 347

Answer:

alright here you need to figure out the points to figure out the slope

Step-by-step explanation:

Answer:

5/3 or 1.6

Step-by-step explanation:

To solve this, multiply the numerator by 5.

1/3 * 5 = 5/3. We can simplify that into decimal form which is 1.6.

Step-by-step explanation:

10x+1=12x-5

1+5=12x-10x

6=2x

6/2=2x/2

3=x

Answer:

x=7

Step-by-step explanation:

Because im right

Answer:

Step-by-step explanation:

15 is 30% of 50. This is found by setting up a proportion: 15/50 = Percent/100, solving for Percent gives 30.

Let's call the part we're trying to find the percent of the "portion."

Portion = 15 (the value you want to find the percent of)

Total = 50 (the total value or whole)

Set up the proportion.

The ratio of the portion to the total as a percent, so we can set up a proportion:

Portion / Total = Percent / 100

Plug in the values.

Portion / 50 = Percent / 100

Solve for the percent:

Portion × 100 = 50 × Percent

Divide both sides by 50:

Percent = (Portion × 100) / 50

Calculate the percent:

Percent = (15 × 100) / 50

Percent = 1500 / 50

Percent = 30

Therefore, 15 is 30% of 50.

To learn more on Percentage click:

https://brainly.com/question/24159063

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x=2

Step-by-step explanation:

is a equation is simple

The value of the expression (x² + 3x + 2) × (2x² + 3x - 1) will be 2x⁴ + 9x³ - 12x² + 3x - 2.

When the relevant components and basic processes of a numerical method are given values, the expression's result is the result of the computation it depicts.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The expression is given below.

⇒ (x² + 3x + 2) × (2x² + 3x + 1)

Simplify the equation, then we have

⇒ (x² + 3x + 2) × (2x² + 3x - 1)

⇒ x²(2x² + 3x - 1) + 3x(2x² + 3x - 1) + 2(2x² + 3x - 1)

⇒ 2x⁴ + 3x³ - x² + 6x³ + 9x² - 3x + 4x² + 6x - 2

⇒ 2x⁴ + 9x³ - 12x² + 3x - 2

The value of the expression (x² + 3x + 2) × (2x² + 3x - 1) will be 2x⁴ + 9x³ - 12x² + 3x - 2.

More about the value of the expression link is given below.

https://brainly.com/question/23671908

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Answer:

C

Step-by-step explanation:

Easy as

9,4

2,4

4-4 0 Distance

9-2

7 distance

Hope this helps!

9514 1404 393

Answer:

  x = 21

  y = 60

Step-by-step explanation:

We assume the marks are angle measures.

The angles of a linear pair are supplementary:

  (3x +5) +(6x -14) = 180

  9x -9 = 180 . . . . simplify

  9x = 189 . . . . . . add 9

  x = 21 . . . . . . . divide by 9

__

At parallel lines, corresponding angles are congruent.

  y +8 = 3x +5 = 3(21) +5 = 68

  y = 60 . . . . . subtract 8