I need help on this question

Answer:

y = 7x - 8

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

Step-by-step explanation:

Step 1: Define

Slope m = 7

y-intercept b = -8

Step 2: Write Function

Substitute in parts.

y = 7x - 8

Answer:

[tex]b=54[/tex]

Step-by-step explanation:

Solve for  [tex]b[/tex]  by simplifying both sides of the equation, then isolating the variable.

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Answer:

B=54

Step-by-step explanation:

B/3=18

B=18×3

so, B=54

Ans

Answer:

I hope this helps

Step-by-step explanation:

This is not the same exact question but it shows you the throw down.

A+B+C= 180

so if A=60 and B=70

The sin is= 8

so 60+70= 130

130+c=180

130-180= 50

C=50

Answer: 2x^2 + 7x + 3

Step-by-step explanation:

(x+3)(2x+1)

(2x^2+1x+6x+3)

2x^2 + 7x + 3

Answer:

c shows 3

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Has three different terms.

Answer:

Step-by-step explanation:

Your answer

P(t) = 8000(1.08)^t= 11755

.. ..... (1.08)^t= 1.469375

........ t = 5

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Answer:

17

Step-by-step explanation:

3 multiply by 5 (which is x) = 15+2

The value of function 3x + 2 at x = 5 will be 17.

What is substitution method?

To find the value of any one of the variables from one equation in terms of the other variable is called the substitution method.

Given that;

The function is,

⇒ 3x + 2

And, The value of x = 5

Now,

The value of the function 3x + 2 at x = 5 is find as;

The function is,

⇒ 3x + 2

Substitute x = 5 in above equation as;

⇒ 3x + 2

⇒ 3 × 5 + 2

⇒ 15 + 2

⇒ 17

Thus, The value of function 3x + 2 at x = 5 will be 17.

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Answer:

29

Step-by-step explanation:

(4+[8=4x(2)]x3)+1

(4+[8=8]x3)+1

(4+[8x3])+1

(4+24)+1

28+1

29

Answer:

She bought 6 pounds of coffee.

Step-by-step explanation:

80-36.38=43.62

so she spent $43.62 on coffee

43.62 divided by 7.27 = 6

9514 1404 393

Answer:

  [tex]f(x)=\left\{\begin{array}{ccc}3x+10&\text{for}&x\le -2\\2x-7&\text{for}&x>4\end{array}\right.[/tex]

Step-by-step explanation:

We observe that the left line segment has a rise of 3 for each run of 1. Its slope is ...

  m = rise/run = 3/1 = 3

It goes through point (-2, 4), so its equation can be written ...

  y = m(x -h) +k . . . . line with slope m through (h, k)

  y = 3(x +2) +4 . . . . fill in known values

  y = 3x +10 . . . . . . . simplify — equation of left line

__

The right segment has a rise of 2 for each run of 1. Its slope is ...

  m = 2/1 = 2

Then the equation of the line through point (4, 1) is ...

  y = 2(x -4) +1

  y = 2x -7

__

Taking into account solid and open circles, the equation for the function is ...

  [tex]f(x)=\left\{\begin{array}{ccc}3x+10&\text{for}&x\le -2\\2x-7&\text{for}&x>4\end{array}\right.[/tex]

Answer:

Yes

Step-by-step explanation:

Answer:

14/25

Step-by-step explanation:

The probability that the sum of the number digits is odd is 13/ 25.

Probability is the possibility of the outcome of any random event.

We have,

Set A = 10, 17, 20, 23, 24, 28, 32, 39, 42, 45, 46, 52, 55, 58, 61, 65, 66, 72, 75, 78, 79, 85, 94, 97, 98

We have to see the number whose sum is odd.

10 = 1 + 0 = 1 (odd)

17 = 1 + 7 = 8 (even)

20 = 2 + 0 = 2 (even)

23 = 2 + 3 = 5 (odd)

24 = 2 + 4 = 6 (even)

28 = 2 + 8 = 10 (even)

32 = 3 + 2 = 5 (odd)

39 = 3 + 9 = 12 (even)

42 = 4 + 2 = 6 (even)

45 = 4 + 5 = 9 (odd)

46 = 4 + 6 = 10 (even)

52 = 5 + 2 = 7 (odd)

55 = 5 + 5 = 10 (even)

58 = 5 + 8 = 13 (odd)

61 = 6 + 1 = 7 (odd)

65 = 6 + 5 = 11 ( odd)

66 = 6 + 6 = 12 (even)

72 = 7 + 2 = 9 (odd)

75 = 7 + 5 = 12 (even)

78 = 7 + 8 = 15 (odd)

79 = 7 + 9 = 16 (even)

85 = 8 + 5 = 13 (odd)

94 = 9 + 4 = 13 (odd)

97 = 9 + 7 = 16 (even)

98 = 9 + 8 = 17 (odd)

We see that there are 13  numbers whose sum is odd.

The probability that the sum of the number digits is odd:

= 13 / 25

Thus the probability that the sum of the number digits is odd is 13/ 25.

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Answer:

6.28

Step-by-step explanation:

C=2πr=2·π·1≈6.28319

Hope this helps ;)

Answer:

Left 3 down 4 is the correct answer so C

Answer:

B. right 3, down 4

Step-by-step explanation:

Answer:

y = x+6

Step-by-step explanation:

You can see that (0,6) and (1,7) are points on the line, and the y-intercept of the line is 6.

Use the coordinates of these points to find the slope of the line.

slope = (7-6)/(1-0) = 1

y-intercept = 6

Slope-intercept equation for line of slope 1  that has y-intercept of 6:

y = x+6

Answer:

50 students

Step-by-step explanation:

hope this helps, have a great day!

Answer:

12/5

Step-by-step explanation:

9 : 3 3/4

9 : 15/4           change to improper fraction

36/4 : 15/4      LCD, 4

36 / 15            compare

12 / 5              reduce

Answer:

9.60 ; - 60.96

Step-by-step explanation:

Given the function :

F(x)=6(x+1) /25, x=0, 1, 2, 3, 4.

x = 0

F(0)=6(0+1)/25 = 6/25 = 0.24

x = 1

F(1)=6(1+1)/25 = 12/25 = 0.48

x = 2

F(2)=6(2+1)/25 = 18/25 = 0.72

x = 3

F(2)=6(3+1)/25 = 24/25 = 0.96

x = 4

F(2)=6(4+1)/25 = 30/25 = 1.2

X ______0 _____ 1 ______ 2 ______ 3 ____ 4

P(x) ___ 0.24 __ 0.48 ___ 0.72 ____ 0.96 __ 1.2

Mean, μ = Σx*p(x) :

(0*0.24) + (1*0.48) + (2*0.72) + (3*0.96) + (4*1.2)

= 9.60

Variance : Σx²*p(x) - μ²

(0^2*0.24) + (1^2*0.48) + (2^2*0.72) + (3^2*0.96) + (4^2*1.2) - 9.6^2

= 31.2 - 92.16

= - 60.96

given f(x)=(x+5),findf(9)

0C.-196

Answer:

y=2, x=3

Step-by-step explanation:

We can see that because triangle EHF has all 3 of the angles the same, EFH is an equilateral triangle and all of the sides are the same. So, we now know that y+2=4. if we simplify that, we find that y=2. Now, because the angles FHG and angle FGH are the same, triangle FHG is an isosceles triangle, and y+2=x+1. we now know that y+2=4, so x+1=4. simplify and x=3

Answer: a glycoprotein that protrudes from the envelope of some viruses (such as a coronavirus) and facilitates entry of the virion into a host cell by binding to a receptor on the surface of a host cell followed by fusion of the viral and host cell membranes

Explanation:

x + 3y = 9

2x + 6y = 12

First you check if the two equations are compatible, that is

if they are parallel, they must not intersect.

Parallel means they have the same slope, given by dy/dx in general, and in the case of linear equations by the ratio of the y coefficient to that of x, that is 3 for the first equation, and 3 for the second. Since these two equations are parallel, they are multiple of each other. Now where these straight lines intersect the axis y = 0, that is the x-axis, is the constant term on the right hand side. Try it

Put y = 0 you get x = 9, for the first equation, and y = 0, x = 6 for the second equation, This is geometrically impossible, and therefore algebraically too. So this problem has no solution

Explanation:

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Answer:

a. [tex]\frac{3}{2}[/tex] b. 48

Step-by-step explanation:

(a) The value of the expression when x = -2 is 1.5.

(b) The value of the expression when x = 3 is 48.

A function is a relationship between a number of inputs and outputs. A function is an association of inputs where each input is coupled with exactly one output. There is a range, co-domain, and domain for every function.

Given that the expression is 6(2)ˣ.

To evaluate the expression 6(2)ˣ for different values of x, we simply substitute the value of x into the expression and simplify.

(a) When x = -2, we have:

6(2)⁻² = 6(1/4) = 1.5

So the value of the expression when x = -2 is 1.5.

(b) When x = 3, we have:

6(2)³ = 6(8) = 48

So the value of the expression when x = 3 is 48.

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Answer:

1a. 16

1b. 106

Not sure about the rest

Step-by-step explanation:

Answer:

1 1/5 cups of soda.

Step-by-step explanation:

To solve this you need to change 3 and 2 1/2 into improper fractions so you get 6/2 and 5/2. Then you have to flip 5/2 so it becomes 2/5 and then you just have to cross cancel. Since the 2 from 2/5 can go into the 2 in 6/2 one time, 2/5 changes into 1/5 and 6/2 changes to 6/1. Now you can multiply across so 6 times 1 is 6 and 1 times 5 is 5 so you get 6/5. Now you have to change it into a mixed number which would be 1 1/5.

I hope this helps you :D

Answer:

1. Speed = 18 miles per hour

2. The distance is 280 miles.

3. The average speed is 52.5 miles per hour.

4. The time to arrive in Leeds would be 11.50 am.

5. Time = 500 s (8 minutes 20 seconds)

6.  speed = 48 miles per hour

b. time taken = 6 hours 40 minutes

Step-by-step explanation:

1. Distance = 90 miles and time = 5 hours

speed = [tex]\frac{distance}{time}[/tex]

           = [tex]\frac{90}{5}[/tex]

           = 18

average speed of the cyclist is 18 miles per hour.

2. speed = 70 mph, and time = 4 hours

speed = [tex]\frac{distance}{time}[/tex]

distance = speed x time

              = 70 x 4

              = 280 miles

The distance is 280 miles.

3. distance = 315 miles, and time = 6 hours.

speed = [tex]\frac{distance}{time}[/tex]

          = [tex]\frac{315}{6}[/tex]

          = 52.5

The average speed is 52.5 miles per hour.

4. distance = 210 miles, and speed - 90 mph.

speed = [tex]\frac{distance}{time}[/tex]

time = [tex]\frac{distance}{speed}[/tex]

        = [tex]\frac{210}{90}[/tex]

        = 2 hours 20 minutes

The time to arrive in Leeds would be 11.50 am.

5. distance = 2000 m, and speed = 4 m/s.

time = [tex]\frac{distance}{speed}[/tex]

       = [tex]\frac{2000}{4}[/tex]

       = 500 s

It would take the athlete 500 s (8 minutes 20 seconds) to cover the distance in the given speed.

6. distance = 420 miles, and time = 8 hours 45 minutes

But, 8 hours 45 minutes = 8[tex]\frac{3}{4}[/tex] hours.

speed = [tex]\frac{distance}{time}[/tex]

          = [tex]\frac{420}{8\frac{3}{4} }[/tex]

          = 420 ÷ [tex]\frac{35}{4}[/tex]

          = 420 x [tex]\frac{4}{35}[/tex]

speed = 48 miles per hour

(b) distance = 420 miles, speed = 63 mph.

time = [tex]\frac{distance}{speed}[/tex]

        = [tex]\frac{420}{63}[/tex]

        = 6 hours 40 minutes

time taken = 6 hours 40 minutes

Answer:

5.6

Step-by-step explanation:

You just have to keeps subtracting 1.1