What is the solution of -6 < 3n + 9 < 21 ?

Answer:

-5<n<4

Step-by-step explanation:

Subtract 9 from both sides

-6 < 3n + 9 -9 < 21-9

-6<3n<12

Divide all sides by 3

-5<n<4

Answer:

−5<n<4

Step-by-step explanation:

Subtract 9 from the whole equation.

−6−9<3n<21−9

Simplify.

−15<3n<12

Divide the whole equation by 3

[tex]-\frac{15}{3} < n < \frac{12}{3}[/tex]

Simplify

−5<n<4

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Can someone help me ?-
The difference of a number and sixteen??

A bullet train can travel at 170 miles per hour. Will a graph representing distance in miles compared to time in hours show a proportional relationship? Explain.

two rational numbers between -1 and 0

You are driving from your house to your friend's house. The distance y (in miles) that you are from your friend's house after x minutes is y = −1/2x + 4. Graph the equation. Then determine how long it takes to drive from your house to your friend's house.

will give brainlist



Sonny substituted 5 for x in the proportion Start Fraction 16 over x End Fraction = Start Fraction 48 over 15 End Fraction and cross multiplied to get 240 = 240. Why is this?
A. because the cross sums of the proportion are equal
B. because the cross differences of the proportion are equal
C. because the cross products of the proportion are equal
D. because the cross quotients of the proportion are equal

Consider the point A located at the coordinates (3,5). First, reflect the point over the x-axis. Then translate that reflected point up 4 units and label this point A". What are the coordinates of A"?


a A"(-3,9)

b A"(7,-5)

c A"(1,5)

d A"(3-1)

(Copying word by word from the sheet)
Your teacher is wondering if the absolute value of a number can ever be negative. Is she correct? Why or why not? Use specific examples and sound mathematical reasoning to support your answer.

(help wth does that mean-)

Match each statement (term) with its value in relation to 0 (definition).

A building is 37 feet tall. A) 2.5
The scuba diver was 37 feet below sea level. B) –13.7
The basement is 13.7 feet below ground. C) 37
Oliver owes his sister $25. D) –25
Erica jumped 2.5 feet above the ground. E) −37

Can someone help me please?

Jake, Becky, and Max are meeting at Charley's Pizza for dinner and then plan to go to a movie. When they arrive at the pizza place, each one of them has a different coupon. They decide to use the coupon that will give them the best deal. Jake's coupon is $19.99 for a pizza and pasta meal deal; Becky's coupon is for two large one-topping pizzas--each at of the menu price; and Max's coupon is for three medium one-topping pizzas -- each at off the menu price. According to the menu, a medium one-topping pizza is $8.99, and a large one-topping pizza is $14.89. They also spend $1.25 each for sodas and $5.00 on the tip. At the movie theater, Max has a coupon that's good for off a third movie ticket when you purchase two other movie tickets at the regular price. The regular price of each movie ticket is $9.80.
Although Jake, Becky, and Max plan to split the cost of the pizza and movie, they decide that with the coupons, it's just easier if one of them pays at each place. So, the friends agree that Jake will pay for the pizza and Becky will pay for the movies. At the end of the night, they'll figure out how much Max owes both Jake and Becky.

If Jake gives the server $30 at the pizza place, he should receive back ______
$1.50 in change (after leaving the tip).
A: More than
B: less than
C: Exactly

Which is an estimate of 15 to one decimal place?
A 1.5
B 3.8
C 3.9
D 4.1

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The water level in Ricky Lake changes at an average of -7/16 inch every 3 years.
a. Based on the rate above, how much will the water level change after one year? Show your calculations and you can use the vertical number line to help you., using 0 as the original water level.
Show all your work and explanation in order to receive full points.

b. How much would the water level change over a 7-year period?
Show all your work and explanation in order to receive full point

C. When written in decimal form, is your answer to part (b) a repeating decimal or a terminating decimal? Justify your answer using long division.
Show all your work and explanation in order to receive full points

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The drama club spent $8.50 per person on food for a cast party. The total cost of the food was $229.50. How many people were at the cast party?
A. 27 people
B. 221 people
C. 238 people
D. 1,951 people pls hellllllp meeeeeeee

umm so guys my teacher said im dumb because i said 1+1 was 21 :( prove her wrong

which is a valid proportion A.) 3/4=21/28 B.) 5/6=29/30 C.) 4/7=16/49 D.) 2/5=12/15​

if u help me ill mark u with the crownnnn ;3

Imagine you have a bucket of water that already has 10 liters of water. You turn on the faucet, which adds 2 liters of water per minute.
1. What equation could you use to represent this situation?

2. What is the y-intercept and what does it represent in this situation?

3. What is the slope and what does it represent in this situation?

Which point represents the linit rate?
2.
2
Х

Multiple Choice

Find each sum or difference.
negative one-half plus one-third
A. negative one-sixth
B. negative one-third
C. two-thirds
D. one-sixth

Which expression is equivalent to negative one half open parentheses three minus two fifths close parentheses?

negative three halves minus one fifth

negative three halves plus one fifth

negative three and one half minus one fifth

negative three and one half plus one fifth

Maria got a 77 on her Spanish quiz. Quizzes are 20% of Maria's grade. Maria got a 100 on all her other assignments. What is Maria's average for Spanish class going to be?

Find the length of the unknown side. Round your answer to the nearest whole number.


Group of answer choices

7 meters

9 meters

10 meters

12 meters

Jen is 7 cm shorter than twice Ann's height. together they are 146 cm. How tall is Jen?

I'll give 30 pints!!!!

Chloe is 5 feet 4 inches tall. There are 2.54 centimeters in 1 inch. What is Chloe's height in centimeters.

Pls give a good explanation bc I have a test over proportion tomorrow.

Thanks!

Options:

Help and please try to explain!!
A fortress is garrisoned by 5,200 men; and there are 9 times as many infantry, and 3 times as many artillery, as cavalry. How many are there of each?

Order the numbers from least to greatest.

−34, 0.5, 23,−73, 1.2

what is a rational number?