7th grade math plz help

THE ANSWER IS NOT 15

Answer:

(2x^2 + x-7)/3x+ 3

Step-by-step explanation:

Here, we want to write the following as a single fraction;

2x-1/3 - 2/x + 1

That will be;

(2x-1)(x + 1) -2(3)/3(x+ 1)

= 2x^2+ 2x-x-1-6/3(x + 1)

= (2x^2+x-7)/3(x+1)

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

Answer:

x ≥ 5, 8.25x + 10 = 175, and x = 20 hours.

Step-by-step explanation:

Let Lin works x hours per week.

Now given that Lin’s job pays $8.25 an hour plus $10 of transportation allowance each week.

And she has to work at least 5 hours a week to $175 per week.

So, the inequality that can be written from the above condition is x ≥ 5 .......(1)

And the equation that can be written that

8.25x + 10 = 175 ....... (2)

So now we can write x = 20 hours

Hope this was helpful :)

Answer:

x=135

Step-by-step explanation:

135 !!!!!lollllll

Answer:

1/4

Step-by-step explanation:

if 3 servings is 3/4 then 1 serving would make since if it was 1/4

Answer:

cc

Step-by-step explanation:

Answer:

-3/5

Step-by-step explanation:

Let's go from the point (5, 8) to the point (10, 5).  We can see immediately that x (the 'run') increases by 5 and y (the 'rise') decreases by 3.  Thus, the slope of the line connecting these two points is m = rise/run = -3/5.

Both of these lines have the slope -3/5, given that they are parallel lines.

2kilometers........3 minutes

xkilometers..........2 minutes

x=2*2/3=4/3=1.33km

Answer:

1.3 kilometers

Step-by-step explanation:

The first ratio of minutes to kilometers is 3:2

The second ratio of minutes to kilometers is 2:x

x is what you are trying to find (how far the kangaroo travels in 2 minutes)

Solve for x:

Change the ratios into fractions:

Cross multiply:

3x = 4

x = 4/3 = 1.33333333333…

and if you round that to the nearest tenth, you get 1.3.

Hope this helped!

Answer:

(x+8)² + (y+9)² = 100

Step-by-step explanation:

The equation for a circle on a graph is

(x - a)² + (y - b)² = r²

r represents the radius

a represents the x displacement of the circle's center.

b represents the y displacement of the circle's center.

Answer:

3

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer:

B (I think)

Step-by-step explanation:

A function can't have two X values that are the same (If I remember correctly) and the second table is the only one that doesn't have duplicated X values

Answer:

the correct answer is b

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

This is most probably the answer because 3, 4, 5 is a pythagorean triple.

Answer: (-4,-2)

Step-by-step explanation:

Looking at the graph, if you move from the zoo downwards for 7 units, you will arrive at point B which is also 2 units from the park.

Point B is therefore the doctor's office and its coordinates are, (-4, -2)

Answer:

If this is a probability question, it's 1 out of 6 for any. However, if it's the same one twice or one right after the other, the theoretical probability would be 1 out of 12.

Step-by-step explanation:

Not sure what multiple choice answers you have but here we go, not sure the exact question either.

Not sure the exact question, but hope I could still help anyway ;-;

Answer:

four weeks

i really hope this is correct

I cant really see that- could you tell me what that is?

Answer:

83

Step-by-step explanation:

Answer:

4x and (1-y)

Step-by-step explanation:

4x(1-y)

this is my answer

The factors of the expression are 18x and 4-y

Given the expression 72x - 18xy

Find the factor of each term:

72x = 18 * 4 * x

18xy = 18 * x * y

Since 18x is common to both terms, hence the factored form is expressed as:

72x - 18xy = 18x (4 - y)

The factors of the expression are 18x and 4-y

Learn more on factors here: https://brainly.com/question/24539261

Answer:

Amount of bill after discount = $55.25

Amount of tip left = $13

Total money spent at the restaurant = $68.25

Step-by-step explanation:

Original bill amount of Mr. Hudson = $65

Discount card value = 15% of the bill

Tip offered = 20% of the original amount

To find:

Amount of bill after the discount of 15%.

Amount of tip left.

Total amount spent in the restaurant.

Solution:

Let us apply the percentage here to find the values of total discount, total tip offered.

Discount = 15% of $65

[tex]\Rightarrow \dfrac{15}{100} \times 65 = \$9.75[/tex]

Amount of bill after discount = $65 - $9.75 = $55.25

Amount of tip left = 20% of $65

[tex]\Rightarrow \dfrac{20}{100} \times 65 = \$13[/tex]

Total money spent at the restaurant = Amount of bill after discount + tip offered = $55.25 + $13 = $68.25

The answers are:

Amount of bill after discount = $55.25

Amount of tip left = $13

Total money spent at the restaurant = $68.25

Answer:

t ≤ 12/23

Step-by-step explanation:

-48t + 2 ≤ -71t + 14

You would need to get all the numbers on one side and all the variables on the other side.

-48t + 2 -2 ≤ -71t + 14 -2 → -48t ≤ -71t + 12

-48t + 71t ≤ -71t + 71t + 12 → 23t ≤ 12

23t ÷ 23 ≤ 12 ÷ 23 → t ≤ 12/23

Answer:

The correct ordered pairs are:

{(1, 6.7), (2, 6.4), (3, 6.1)}

Option A is correct.

Step-by-step explanation:

A watering can dispenses water at the rate = 0.3 gallon per minute

The original volume of water in the can = 7 gallons.

Which set of ordered pairs shows the volume of water in the can in gallons (y), as a function of time in minutes (x), from the first minute after the can starts dispensing water?

First making the function:

The the volume of water in the can in gallons is represented by y and  time in minutes is represented by x. Initially the volume is 7 gallons, after than water dispense at rate of 0.3 gallon per minute so, the function will be:

y=7-0.3(x)

Now, putting values to find ordered pairs

So, when time is 1 minute i.e x = 1

y=7-0.3(1)

y=7-0.3

y=6.7

So, when x=1, y=6.7 the ordered pair is: (1,6.7)

when time is 2 minutes i.e x = 2

y=7-0.3(2)

y=7-0.6

y=6.4

So, when x=2, y=6.4 the ordered pair is: (2,6.4)

when time is 3 minutes i.e x = 3

y=7-0.3(3)

y=7-0.9

y=6.1

So, when x=3, y=6.1 the ordered pair is: (3,6.1)

So, the correct ordered pairs are:

{(1, 6.7), (2, 6.4), (3, 6.1)}

Option A is correct.

Answer:

22.5

Step-by-step explanation:

Answer:

7392 pounds

Step-by-step explanation:

22x24x14

multiplication my friend

Answer:

A) 60 miles/hour

Step-by-step explanation:

Answer:

Everything except Option 4 and option 3 because in option 4 and option 3, the y value does not repeat.

Step-by-step explanation:

Answer:

0

-20

-7

Step-by-step explanation:

0 x any number = 0

4(-5) = -20

126/(-18) = -7

Answer:

1. 0

2. -20

3. -7

Step-by-step explanation:

1. 0 times anything is equal to nothing times something.

So, the first one is 0.

2. For 4 x -5, you can just do 4 x 5 x -1, which equals 20 x -1, whixh equals -20.

3. Remember, a negative times a negative = a positive. So, the number must be negative. Just do 126 / 18 x -1, which equals -7.

Hope this helps!!

Answer is attached below. Hope this helps.

Answer:

The total length of string needed for 17 identical decorative bottles is 35.70 meters

Step-by-step explanation:

Let us solve the question

∵ String A is 35 centimeters long

∵ String B is 5 times as long as String A

→ Multiply the length of A by 5 to get the length of B

∴ The length of string B = 35 × 5 = 175 cm

∵ Both are necessary to create a decorative bottle

∴ The length needed for 1 bottle = 35 + 175 = 210 cm

∴ Each bottle needs 210 cm to be decorated

∵ There are 17 identical bottles

→ Multiply the length needed for 1 bottle by 17

∴ The total length needed = 17 × 210 = 3570 cm

∴ The total length needed to decorate 17 bottles is 3570 cm

∵ 1 meter = 100 centimeter

→ Divide the total length by 100 to express it in meters

∴ 3570 cm ÷ 100 = 35.70 m

The total length of string needed for 17 identical decorative bottles is 35.70 meters

Answer:

D

Step-by-step explanation:

To divide the 2 fractions

• leave the first fraction

• change division to multiplication

• turn the second fraction upside down

[tex]\frac{11}{12}[/tex] × [tex]\frac{7}{5}[/tex]

= [tex]\frac{11(7)}{12(5)}[/tex]

= [tex]\frac{77}{60}[/tex]

= 1 [tex]\frac{17}{60}[/tex] → D

Answer:

Step-by-step explanation:

8q=30+3q

5q=30

q=6