15 is what percent of 40?
15 is
19% of 40.

Answer:

[tex]8x - 14[/tex]

Step-by-step explanation:

1. expand by distributing terms.

[tex]2 \times 4x + 2 \times - 7[/tex]

2. Simplify 2 × 4x to 8x.

[tex]8x + 2 \times - 7[/tex]

3. Simplify 2 × -7 to -14.

[tex]8x - 14[/tex]

Therefor, the answer is, 8x - 14.

Answer:

y=6*x+101

Step-by-step explanation:

Slope intercept form is y=mx+n, where m is the slope and n is the intercept.

Substituing in that equation the two points we get two different expressions. Now we have to solve a 2x2 system of equations.

I decide to solve it through substraction (literally one expression minus the other). That way we cancel out the n and obtain the value of m.

Now that we have m we plug in the value of m in one of the expressions to obtain the value of n.

To express the final equation we just plug in the values of m and n in the expression y=mx+n!

Answer:

y=6*x+101

Step-by-step explanation:

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

Hope this will helps

Answer:

Step-by-step explanation:

Yes.

Answer:

6 groups of 6 counters.

Step-by-step explanation:

36/6=6

Answer:

6

Step-by-step explanation:

6x6=36

Answer:

[tex] 2 {d}^{5} (5 {d}^{2} + 1)[/tex]

Step-by-step explanation:

[tex]10d^7 + 2d^5 \\ \\ = 2 {d}^{5} (5 {d}^{2} + 1)[/tex]

Answer:0.375

Step-by-step explanation:

What is the dividend? the question

9514 1404 393

Answer:

  £8400

Step-by-step explanation:

The amount due after t years is ...

  A = P(1 +rt)

  A = £6000(1 + 0.10·4) = £6000·1.40

  A = £8400

Chris pays back £8400 in total.

Answer:

8.57

Step-by-step explanation:

We can calculate the value of x using similarity ratio

11/7 = (15 + x)/(15) cross multiply expressions

105 × 7x = 165 subtract 105 from both sides

7x = 60 divide both sides by 7

x = 8.57 approximately

Answer:

12/7 or 1 5/7

Step-by-step explanation:

6 * 2 = 12

so

12/7 = 1 5/7

Answer:

1.714 and/or 1 5/7

Step-by-step explanation:

You're welcome :P

Answer:12

Step-by-step explanation:

Your goal with variables should always be to isolate them.

so the first step is to subtract the 4

3x^2+4=436

       -4= -4

3x^2=432

The next step to isolate the variable x is to get rid of the 3. To get rid of the 3 you have to divide both sides by 3 since it is the opposite of multiplying.

3x^2=432

/3.    =/3

x^2=144

the last step to isolate the x is to do the opposite of what an exponent is, which is to find the square root. So when you square the x^2, the exponent cancels out.

square root of x^2=x

square root of 144=12

x=12

hope this helps!

Answer:

y=2/13

Step-by-step explanation:

Answer:

Its the third option from the top. y=-2/13x-40/13

Step-by-step explanation:

You do the maths.

Answer:

14

Step-by-step explanation:

to find area, use the equation A=ab/2

a and b are the sides given. a=7, b=4

next, plug into equation

A=7×4/2

A=14

Answer:

There's no solution to this equation, when 2 equations have the same slope but different y-intercepts, they're parallel. This means they never intercept and there is NO solution and we can't solve for x.

Answer:

1

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

108/(108-72) = 108/36 = 3

60/3 = 20

Yes. The first step is to set up the equations so that one unknown cancels out: here, the z's will cancel out:

5z+4y=-14

3z+6y=-6

-15z-12y=42

15z+30y=-30

8y=12

y=1.5

3z+6y=-6

3z+6(1.5)=-5-9

z=-14/3

Answer:

30-30-60 triangle

Step-by-step explanation:

45-45-90

Answer:  C

Step-by-step explanation:

To find the perimeter of a rectangle , you need to use the formula  

P = 2l + 2w   where   P is the perimeter, l is the length, w is the width.

Input the dimensions, for each rectangle and solve for the P

P = 2(3) + 2(9)

P = 6 + 18

P = 24  

P = 2(5) + 2(11)

P = 10 + 22

P = 32

The smaller rectangle has a perimeter of 24 and the large rectangle has a perimeter of 32

The ratio will be    32 : 24  which breaks down to  4: 3

Answer: A

Step-by-step explanation:

Answer:

A

Just do it Step By Step

Answer:

Sister: p

Lauren: 12 + 6p

Answer:

144

Step-by-step explanation:

63+81=9(7+9)=9(16)=144

Answer:

11

Step-by-step explanation:

C(4) = -7 + 6(4-1)

C(4) = -7 + 6 x 3 =

C(4) = -7 + 18

C(4) = 11

Hope that helps!

Answer:

maximum score =75

minimum=0

Step-by-step explanation:

Answer:

y=23x-8

Step-by-step explanation:

Use the formula y=mx+b

y-intercept is b which is -8

the slope is m which is in this case 23

Easy peasy!

[tex]= \color{plum}\tt(C) 7 \frac{2}{4} [/tex]

Quantity of water she needs [tex] = \tt \frac{3}{4} \: cup [/tex]

Number of servings she needs = 10

Number of cups of water she will need :

[tex] = \tt \frac{3}{4} \: \times 10[/tex]

[tex] = \tt\frac{30}{4} [/tex]

[tex] =\tt 7\frac{2}{4} \: cups[/tex]

Thus, she needs [tex] \tt 7\frac{2}{4} \: cups [/tex] of water.

Therefore, the correct option is [tex]\color{plum}\tt(C) 7 \frac{2}{4} [/tex]

Answer:

The expression is not factorable

Answer:

11

Step-by-step explanation:

55/5 equals 11

Answer:

11

Step-by-step explanation:

55 divided by 5 equals 11