I need help with finding the answers for number 4 and 5

Answer:

is the first one

Step-by-step explanation:

Answer:

11 fishes

Step-by-step explanation:

Answer:27

Step-by-step explanation: add all the answers

Answer:

The answer is x = 3

Step-by-step explanation:

5x + 9 = 24

5x +9 -9 = 24 - 9

5x = 15

x = 15/5 = 3

Therefore, x = 3

Kelly multiplied 5 to each side when she solved for x, which is incorrect.

Answer:

Kelly had incorrectly solved for [tex]x[/tex] where she had multiplied by [tex]5[/tex] instead of dividing by [tex]5[/tex] to find for [tex]x[/tex].

Step-by-step explanation:

How Kelly should have solved it:

[tex]5x+9 = 24[/tex]

[tex]5x + 9-9= 24-9[/tex]

[tex]5x=15[/tex]

[tex]5x\div 5=15\div 5[/tex] (mistake occurred during this step in Kelly's work where she had multiplied by [tex]5[/tex])

[tex]x=3[/tex]

Checking:

To check if [tex]x=3[/tex], we can use substitution:

[tex]5x+9 = 5(3)+9[/tex]

[tex]=15+9[/tex]

[tex]=24[/tex]

∴ The solution for [tex]x[/tex] is correct.

Hope this helps :)

Answer:

y=-2x

Step-by-step explanation:

slope is -2 and the y intercept is 0 so if you plug these answers into slope intercept form (y=mx+b) then it comes to y=-2x

Answer:

b<-7 or b>-1

Step-by-step explanation:

explanation: -6b>42 turns into -42>6b then divide by 6 on both sides and you get -7>b

for the other inequality, you  take 4b+6>2 and then subtract6 from both sides, from there you will get 4b>-4 and that will be b>-1

Answer: 4

Step-by-step explanation:

Given: Total girls = 24

Total boys = 20

If each group must be identical, then the maximum number of groups that can be made = GCD(24,20)   [GCD= Greatest common divisor]

Since 24 = 2 x 2 x 2 x 3

20 = 2 x 2 x 5

GCD(24,20)= 2 x 2 = 4

Hence, the maximum number of groups that can be made = 4

Answer:

0.44

Step-by-step explanation:

2/9 = 0.22

4/2 = 2

answer = 0.22 x 2

answer = 0.44

Answer:

4/9

Step-by-step explanation:

2/9 × 4/2

⇒ 2×4/9×2

⇒ 8/18

⇒ 4/9

hope this helps you!

Answer:

The answer is: (98-3)

Answer:

8,2

Step-by-step explanation:

becuase it is 8 points away from the origanal but also 2 points away

Answer:

C. -3

Step-by-step explanation:

You can do this using two different methods.

First, slope is written rise over run, or y over x. We can find two points and count how much we need to rise and run. The graph already includes the points (2,-3) and (-1, 6), which we will use. If you carefully look at the graph, you can see that if you start from the point (2,-3), you can rise 9 and run -3 to get to the point (-1, 6), which brings me to the next step. As I stated in the beginning, slope is written rise over run. Therefore, the slope is 9/-3, which simplifies to -3, answer choice C.

Another way you can do this is subtracting the y's and subtracting the x's in the same order. The y's go over the x's, and is basically written as a fraction. For this method, we still need two points. We will use the same points as above and listed on the graph, points (2,-3) and (-1, 6). The y's are -3 and 6, and the x's are 2 and -1. Now, subtract.

-3-6  =-9=-3

2-(-1)= 3

As you can tell, both methods of solving for slope worked, and the answer is choice C.

I hope this helps you!! Have a great day ^^

Answer:

$22

Step-by-step explanation:

Answer:

Below.

Step-by-step explanation:

(a)

The acceleration = the slope of the graph (change of velocity / time)

= 25/15

= 1.67 m/s/s.

(b)

The distance moved = the area under the graph for the first 0 seconds,

= area of the first triangle + area of the rectangle with height 25 and length (40 - 15)

= 1/2 * 15 * 25  + (40-15) * 25

= 187.5 + 625

= 812.5 m.

(c). ? what is the question?

Answer:

Step-by-step explanation:

The answer is -3

i just took the quiz and got it right

The rate of change for the given data is -3. Therefore, option A is the correct answer.

The coordinates from the given data are (-1, 5) and (2, -4).

The rate of change, or the slope, is calculated as Δy/Δx , or (y2−y1)/(x2−x1). The slope-intercept equation of a line is y=mx+b , where m is the slope and b is the initial value.

Here, (x1, y1)=(-1, 5) and (x2, y2)=(2,-4)

Rate of change = (-4-5)/(2+1)

= -9/3

= -3

The rate of change for the given data is -3. Therefore, option A is the correct answer.

Learn more about the rate of change and initial value here:

https://brainly.com/question/8223651.

#SPJ2

Answer:

30 gallons

Step-by-step explanation:

Answer:

The first one is 12

The second one is -12

Just multiply, and remember the negative signs.

Answer:

1st Question- Positive Twelve

Second Question- Negative Twelve

Step-by-step explanation:

Answer:

use the slope formula to find the slope m

m = - 1/2

Answer:

I think

Y=129x-75

Step-by-step explanation:

Sorry if it's wrong I am not as good at math like I was before

Answer:$16.75

Step-by-step explanation:

Answer:

Flip the fraction that you are applying the exponent to, if it's a whole number, just imagine it's over one and flip it that way.

Explanation:

If you have 3/5 ^-3

You would flip the fraction to 5/3, then the exponent turns to positive 3

So 5/3 ^3

For a whole number, for example, 6, ^-2

In other words, it's 6/1 ^2, so you would make it 1/6, then the exponent turns positive.

So 1/6 ^2

Hope this helped :)

To change a negative exponent to a positive one, a flip it into a reciprocal.

Here,

We have to explain, change a negative exponent to a positive one.

What is Reciprocal?

The inverse of a number is called Reciprocal.

Now,

Let a number is,  [tex]5^{-2}[/tex]

Then change it into positive exponent as;

Take reciprocal of [tex]5^{-2}[/tex], we get;

⇒ [tex](\frac{1}{5} )^2[/tex]

Hence,  reciprocal of [tex]5^{-2}[/tex] = [tex](\frac{1}{5} )^2[/tex]

So, To change a negative exponent to a positive one, a flip it into a reciprocal.

Learn more about the reciprocal visit:

https://brainly.com/question/1955429

#SPJ2

Answer:

.75 or 3/4

Step-by-step explanation:

Answer:

y=x+5

Step-by-step explanation:

Answer:

[tex] \huge{ \boxed{ \bold{ \tt{y = 8}}}}[/tex]

☪ What is the value of y for the equation given below when x = 2 ?

☪ Step - by - step explanation :

plug the value of x ( i.e 2 )

➳ [tex] \sf{ - 3 \times 2 + 2y = 10}[/tex]

Remember : Multiplying or dividing a negative integer by a positive integer gives a negative integer.

➳ [tex] \sf{ - 6 + 2y = 10}[/tex]

Move 6 to right hand side and change it's sign

➳ [tex] \sf{2y = 10 + 6}[/tex]

Add the numbers : 10 and 6

➳ [tex] \sf{2y = 16}[/tex]

Divide both sides by 2

➳ [tex] \sf{ \frac{2y}{2} = \frac{16}{2}} [/tex]

➳ [tex] \boxed{ \sf{y = 8}}[/tex]

——————————————————

✏ Now, let's check whether the value of y is 8 or not !

✑ Verification :

[tex] \sf{ - 3x + 2y = 10}[/tex]

→ [tex] \sf{ - 3 \times 2 + 2 \times 8 = 10}[/tex]

→ [tex] \sf{ - 6 + 16 = 10}[/tex]

→ [tex] \sf{10 = 10}[/tex]

L.H.S = R.H.S ( Hence , the value of y is 8 . )

——————————————————

☞ Additional Info :

✒ Sign rules of addition and subtraction of integers:

✒ Sign rules of multiplication and division of integers :

✒ Rules for solving an equation :

Hope I helped!

Have a wonderful time ツ

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Answer:

The mom is 30 times older than the son and the son is 30 years younger

Step-by-step explanation:

it says so

Missing Part of the Question:

- The time required for the rocket to reach its maximum height

- The maximum height of the rocket

Answer:

a. Time to reach maximum height is 1.37 seconds

b. Maximum Height = 34.1 metres

Step-by-step explanation:

Given.

H(t) = -4.9t² + 13.4t + 24.9

Solving (a): Time taken to reach maximum height.

A quadratic equation is:

f(x) = ax² + bx + c

Where

a = -4.9

b = 13.4

c = 24.9

This required time is represented by the vertex and is calculated as thus:

t = -b/2a

Substitute values for b and a

t = (-13.4)/(2 * -4.9)

t = -13.4/(-9.8)

t = 13.4/9.8

t = 1.37 (approximated)

Hence the time to reach maximum height is 1.37 seconds

b. Maximum height

Here, we simply substitute 1.37 for t in

H(t) = -4.9t²+ 13.4t + 24.9

Maximum Height = -4.9 * 1.37² + 13.4 * 1.37 + 24.9

Maximum Height = -4.9 * 1.8769 + 13.4 * 1.37 + 24.9

Maximum Height = -9.19681 + 18.358 + 24.9

Maximum Height = 34.06119

Maximum Height = 34.1 metres (approximated)

Answer: Christa would need to save $35.45.

Step-by-step explanation:

70.45 - 35 = The amount Christa needs to save

70.45 - 35 = 35.45

Answer:

1 hr and 45 mins

Step-by-step explanation:

12:26-11:11 or  115, so an hour and 45 mins.

Hope this helps :D

Answer:

75 min

Step-by-step explanation:

I did 49+26 because from 11:11 to 12 theres 49 min and from 12 to 12:26 theres 26 min

Answer:

-15

Step-by-step explanation:

Answer:

w=9

Step-by-step explanation:

w - 12 = -3

w-12+12=-3+12

w=9

Answer

512 student tickets were purchased.

Step-by-step explanation:

Answer:

10 is the correct answer

Step-by-step explanation:

5+5=10

Answer:

your discount would be 25

Step-by-step explanation:

start, first subtract 45 from 60 to find the amount of money taken off from the discount:

60-45

=15

Because 15 dollars have been taken off the original price, you can find the percent of discount by setting up this proportion where x represents the percent of discount:

15/60=x/100

Now, cross multiply and solve for x:

1500=60x

x=25

Therefore, your discount would be 25%.

Answer:

25% !

Step-by-step explanation:

I looked it up and it makes sense!