At the start of the challenge, Marisol is able to complete 32 sit-ups and plans to increase the number of sit-ups she completes daily by 2. At the start of the challenge, Kelly is able to complete 28 sit-ups and plans to increase the number of sit-ups she completes daily by 3. Which system of equations can be used to determine the number of days it will take for both to complete the same number of daily sit-ups?

Answer:

total price should be 100.04

Step-by-step explanation:

good luck!!

Hello!

[tex]\large\boxed{B = -9}[/tex]

Find "B" by plugging in the x and y values into the equation given:

-7x + By = 31

-7(-7) + B(2) = 31

49 + 2B = 31

Subtract 49 from both sides:

2B = -18

Divide both sides by 2:

2B / 2 = -18/2

B = -9

Answer:

1: 45

2: 135

3: 45

4: 135

5: 60

6: 120

7: 60

8: 120

9: 75

10: 105

11: 75

12: 105

Step-by-step explanation:

1, 2, 3, and 4 and 9, 10, 11, and 12 can be solved using the vertical angle and supplementary angle rules. Vertical angles are always the same and supplementary angles always add up to 180. But to find 5, 6, 7, and 8, you need to find 5 using the rule where all the angles in a triangle add up to 180. Since we know the angles for 9 and 3, we can find the angle 5 and then we can finish finding the rest of the angles.

I hope this helps!

Answer:

x = -1

Step-by-step explanation:

6x + 104 = 16x + 114

First subtract 104 from both sides

Now you have:

6x = 16x + 10

Subtract 16x from both sides

-10x = 10

Divide by -10 on both sides and you get your answer

x = -1

Answer:

x = - 1

Step-by-step explanation:

First you wanna subtract 104 from both sides

6x + 104 - 104 = 16x + 114 - 104

you should get 0 on the left and 10 on the right

next you subtract 16x from both sides  

6x - 16x = 16x - 16x + 10

you should get -10x on the left side and get 0 on your right

next you divide both side by -10

-10x ÷ -10 = 10 ÷ -10

the left should be 0 and the right should be -1

that's how i got the answer and I hope it helped !

Answer:

choice 3

Step-by-step explanation:

Answer:

Option 4

Step-by-step explanation:

In the first equation, there is a negative slope (-[tex]\frac{1}{2}[/tex]) so the line should be going downwards and pass by the y-intercept which is 3.

In the second equation, there is a positive slope ([tex]\frac{1}{2}[/tex]) so the line should be going upwards and pass by the y-intercept which is (-1).

Answer:

C

Step-by-step explanation:

plug in the answers to see which has an equal scale factor between mp and mt, and po and tr

if tr = 6, then the scale factor between po and tr is 1.5

that means, that in order to equal 9 mt would have to be 3

if mt = 3, then the scale factor between mp and mt would also be 1.5

therefore, since they both have an equal scale factor, the answer is

4) TR = 6

hope this helps!!

Answer:

Option 4: 6

Have a wonderful day

 1.25 in/hr is  an equation for L, in terms of t, representing the length of the candle remaining unburned, in inches, t hours after the candle was lit.

What in mathematics is a linear equation?

L(t) is a function of time, t:  L(t) = 15 in - (1.25 in/hr)t

Note that when the candle has burned down to nothing, L(t) = 0.  How long does that take?  Set 15 in - (1.25 in/hr)t equal to zero and solve for t:

(1.25 in/hr)t = 15 in, or

        15 in

t = ---------------- = 12 hrs

  L =   1.25 in/hr

Learn more about linear equation

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Answer:

Find the answer is below.

Step-by-step explanation:

The answer is 33.

Hope this helps and if you could mark me as brainliest. Thanks!

Answer:

15 = X . hope this helped

Answer:

the answer is 341(I think)

113 = 3 • 36 + 5

(That is, 36 = 6² is the largest power of 6 that fits into 113. The next power 6³ = 216 exceeds 113.) Then

113₁₀ = 3 • 6² + 5 • 6⁰ = 305₆

Answer:

3√64 is 4

The answer is in the bottom left under the biggest one

Step-by-step explanation:

To find the volume you need to multiply the height, width, and length which represents the 3 to square it to 4 means 4 unit length on each side to have a total of 64 volume.

Hope this helps!

Answer:x=5

Step-by-step explanation:

Answer:

x = 5

Step-by-step explanation:

6x + 5 = 35

subtract 5 from both sides

6x = 30

divide by 6

x = 5

Answer:

A. Yes; acute triangle

Step-by-step explanation:

a=6

b=14

c=13

Using Pythagorean theorem-

c^2 = a^2 + b^2

13^2 = 6^2 + 14^2

169 = 36 + 196

169 = 232

169 < 232

Therefore, (a) the triangle is acute.

If 169 =169 there would be a right triangle.

If c were greater than a + b there would be an obtuse triangle.

Answer:

perimeter of a semicircle = πr

3.142 * 10

= 31.42

hope it helps you

Answer:

y = 1/5x + 13

Step-by-step explanation:

y = mx + b

12 = 1/5(-5) + b

12 = -1 + b

13 =  b

y = 1/5x + 13

Hope this helped, let me know if you need a better explanation!

In a true experimental design, the manipulated variable, or grouping variable is  independent variable; based on pre-existing difference.

The independent variable is the variable in an experiment that is manipulated by the researcher. It is assumed that the independent variable has a direct effect on the dependent variable. The dependent variable is the variable whose value is being determined  in the experiment.

For example, you want to carry out an experiment to determine the effect of the hours spent reading for a test on the grade gotten on the grade. In this research, the independent variable is the hours spent reading and the dependent variable is the grade gotten. Different data on the hours studied would be collected.

To learn more about independent variables, please check: https://brainly.com/question/26287880

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Answer:

Mrs. Haley had  [tex]\mathbf{\frac{3}{14}}[/tex] liters of salt water left.

Step-by-step explanation:

Mrs Haley has salt = [tex]\frac{5}{7}\:liter[/tex]

Mrs Haley used salt = [tex]\frac{1}{2}\:liter[/tex]

We need to find how much salt is left?

[tex]Salt\: left = Total\: Salt - Salt\: used\\Salt\: left = \frac{5}{7}-\frac{1}{2}\\Salt\: left =\frac{5*2-1*7}{14} \\Salt\: left =\frac{10-7}{14} \\Salt\: left =\frac{3}{14}[/tex]

So, Mrs. Haley had  [tex]\mathbf{\frac{3}{14}}[/tex] liters of salt water left.

Answer:

Sum of the first 15 terms = -405

Step-by-step explanation:

a + 3d = -15 (1)

a + 8d = -30 (2)

Where,

a = first term

d = common difference

n = number of terms

Subtract (1) from (1)

8d - 3d = -30 - (-15)

5d = -30 + 15

5d = -15

d = -15/5

= -3

d = -3

Substitute d = -3 into (1)

a + 3d = -15

a + 3(-3) = -15

a - 9 = -15

a = -15 + 9

a = -6

Sum of the first 15 terms

S = n/2[2a + (n − 1) × d]

= 15/2 {2×-6 + (15-1)-3}

= 7.5{-12 + (14)-3}

= 7.5{ -12 - 42}

= 7.5{-54}

= -405

Sum of the first 15 terms = -405

Answer:

That’s RSM!!!

Step-by-step explanation:

Use math-way, it helps that’s what I use for those problems.

Answer:

See picture explanation

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

All real numbers are solutions.

Step-by-step explanation:

3x-7=3(x-3)+2

3x-7=3x-7

subtract 7 from both sides

3x=3x

subtract 3x from both sides

0=0

All real numbers are solutions.

Answer:

84000000 and −6200000

The answer D. 275

Hope this helps :)

Answer:

A

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

put the quardinates in the slope formula and set it to 1/2 and solve by cross multiplying

9-7/x+8 = 1/2

2/x+8 = 1/2

4 = x+8

x = -4