How to solve 8x+y=23
-10x-y=-27

Answer:

x=(-1+-√ 10)/3

Step-by-step explanation:

number in the square root is the discriminant

Answer:

6

Step-by-step explanation:

Answer:

Option B, [tex]x =[/tex] ± [tex]9.49[/tex]

Step-by-step explanation:

Step 1:  Add 90 to both sides

[tex]x^2 - 90 = 0[/tex]

[tex]x^2 - 90 + 90 = 0 + 90[/tex]

[tex]x^2 = 90[/tex]

Step 2:  Square root both sides

[tex]\sqrt{x^2} = \sqrt{90}[/tex]

[tex]x =[/tex] ± [tex]9.49[/tex]

Answer: Option B, [tex]x =[/tex] ± [tex]9.49[/tex]

Answer:

9,12,15

Step-by-step explanation:

I just looked at the different pythagorean triples and saw which set has a difference of 6 between the largest and smallest and a difference of 3 between the first and second one.

Here are the first few pythagorean triples:

3,4,5

6,8,10

7,24,25

5,12,13

9,12,15 - This is our answer

Hope this helped and brainliest please

Answer:

47%

Step-by-step explanation:

First we need to find the ratio of masks on Jack's wall to the total number of masks, which is 235/500. Now we need to make the denominator 100 in order to find the percentage by dividing the numerator and denominator by 5 to get 47/100. Therefore the percentage of Jack's mask collection that is on his wall is 47%.

Answer:

Step-by-step explanation; zero point fittyfour

Answer:

you can say fifty four hundredths, or simpler, zero point fifty four, or even simpler, zero point five four ( I recommend fifty four hundredths)

Answer:

60

Step-by-step explanation:

hope this helps loves x

Answer:

Step-by-step explanation:

60

Big

Bubble

Hub

Be

Answer:

htrtrheherh

Step-by-step explanation:

Answer:

what about this 0=20

Step-by-step explanation:

so x=2 right there for

(-3)2+6=(2)-24

-6+6=4-24

0=20

Step-by-step explanation:

3 units down

(-1,3)- (-1,0) 3 units down in y coordinate

and so on

Answer:

C

Step-by-step explanation:

Answer:

15 pounds of beans costs 12 dollars

Step-by-step explanation:

(15,12)  Means 15 pounds of beans costs 12 dollars

The first coordinate is the x value which is pounds and the second coordinate is the y value which is dollars

Answer:

Step-by-step explanation:

Answer:

applying absolute law

if |u|=a, a>0 then u=a or u=-a

2x+5=15 or 2x+5=-15

2x=15-5 or 2x=-15-5

2x=10 or 2x=-20

x=5 or x= -10

Answer:

y = -x/5 - 3

Step-by-step explanation:

Slope intercept form: y = mx + b

x + 5y = -15

5y = -15 - x

y = -15/5 -x/5

y = -x/5 - 3

Answer:

4x-4 < -76

Step-by-step explanation:

Four times a number (x), minus 4, is less than -76.

Answer:

x is less than —18

Step-by-step explanation:

Check out the attached photo

Answer:

Total Platform = 128 ft^3

Step-by-step explanation:

Volume = Length * Width * Height

Left Volume: 2 ft * 4 ft * 3 ft = 24 ft^3

Mid Volume: 4 ft * 4 ft * 5 ft = 80 ft^3

Right Volume: 2 ft * 4 ft * 3 ft = 24 ft^3

Total Volume = 24 ft^3 + 80 ft^3 + 24 ft^3 = 128 ft^3

Answer:

v = [tex]108^{3}[/tex]

Step-by-step explanation:

I'd start with breaking the platform into two parts, the long flat rectangle and then the bit on top. You'll have to add these together at the end!

_________________

So part one: the long piece

formula: v = lwh

dimensions: 12, 3, 2

plug in: v = 12 * 3 * 2

solve: v = 72^3

_________________

part two: smaller rectangle on top ::

formula: v = lwh

dimensions: 4, 3, 3

plug in: v = 4 * 3 * 3

solve:v = 36*3

__________________

now, we add for the total of the entire shape!

final answer: 72 + 36 = 108^3

Step-by-step explanation:

It's just asking you to rewrite it in vertex form. Which would be

[tex](x + 10) ^{2} - 4[/tex]

Answer:

Step-by-step explanation:

1. 60                    11. 33  km

2. 500            12. 200 km

3. 5                       13. 67.5 km

4. 20                       14.  600 km

5. 9                   15. 30 km

                                          16. a.400 km

6. 2                                      17. c. 216 km

7. 4

8.5

9. 3

10.5

Answer:

Step-by-step explanation:

Answer:

Equation: N = 2M, Shen needs to read 26 novels in 13 months

Step-by-step explanation:

Given : Shen needs to read 2 novels each month.

i.e. In One month , the number of novels read by Shen = 2

Let N be the number of novels Shen needs to read in M months.

Then , N = 2 M

Thus , the equation relating N to M : N = 2 M

If Number of months = 13 , then put M = 13 in the above equations , we get

N = 2(13) = 26

Hence, the number of novels he read in 13 months = 26.

Answer:

See below for answers and explanations

Step-by-step explanation:

The leading term is the term with the highest degree, in this case, 5y³

The leading coefficient is the number in front of the leading term, 5

The constant term is a term with no variables contained, in this case, -1

Answer:

  C.  The equation has two valid solutions

Step-by-step explanation:

A rational equation like this is often solved by "cross-multiplying" to eliminate the fractions. When we do that, we get ...

  4(2x+10) = x(3x+1) . . . . . . . multiply both sides by (3x+1)(2x+10)

  3x² -7x -40 = 0 . . . . . . . . . . rearrange to standard form

  3x² -15x +8x -40 = 0 . . . . . . separate -7 into factors of 3(-40)

  3x(x -5) +8(x -5) = 0 . . . . . factor pairs of terms

  (3x +8)(x -5) = 0 . . . . . . . finish factoring

The zeros of these factors are not zeros of the original denominators, so neither of the solutions these give is extraneous.

  3x +8 = 0   ⇒   x = -8/3

  x -5 = 0   ⇒   x = 5

Answer:

Below!

Step-by-step explanation:

Let us consider that 16 + 4 and 2(2w+8) are equal. Then;

This equation can be solved in two ways. Listed below!

Method 1:

Let's simplify the left-hand-side of the equation.

Then, divide "2" both sides of the equation to open the parentheses.

Subtract 8 to both sides of the equation to isolate the variable (w) and it's coefficient.

Finally, divide 2 to both sides of the equation to isolate the variable (w).

Therefore, 16 + 4 and 2(2w + 8) can be equal if the value of "w" is 1.

Method 2:

Let's simplify the left-hand-side of the equation.

Then, simplify the distributive property to open the parentheses.

Subtract 16 to both sides of the equation to isolate the variable and it's coefficient.

Finally, divide 4 to both sides of the equation to isolate the variable (w).

As said in method 1, 16 + 4 and 2(2w + 8) can be equal if the value of "w" is 1.

Answer:

76.54 ft

Step-by-step explanation:

Pythagorean theorem

37^2 + 67^2  = d^2

d = 76.54 ft

Answer:

-7240

Step-by-step explanation:

The nth term is -10n + 24.

So the combination of the first and second term would be (-10+24)+(-10x2+24) and this would continue for the first 40 terms so the 24s would add up to 24x40=960. Meanwhile, the -10s would keep adding up so it would be -10-20-30-40.... which you can simplify by making it -10(1+2+3+4) all the way to 40 to make the calculation easier... u can further simplify by making 41 = one pair of numbers so 40+1, 39+2 until you get 21+20 so ur left with -10(20 pairs of 41) so -10(20x41) = -10(820)= -8200.

Add this to your initial 960 so

-8200 +960 = -7240

Hope this helps

Answer:

>

Step-by-step explanation:

its because 56.72 is greater than 5.672

Answer:

56.72 > 5.672

Step-by-step explanation:

> means greater than

< means less than

so 56.72 is greater than (>) 5.672

Answer:

3.56 you little silly dum dum girl

Answer:

A. 3.56

Step-by-step explanation:

I didnt take his answer my big brain knew the answer.