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Diano4ka-milaya [45]

4 years ago

6

ritas score is 14 more than 3 times milans score. if we let r represent milans score, write an algebraic expression for ritas sc

ore

1 answer:

gulaghasi [49]4 years ago

6 0

14+3r is the answer because more than means addition and times is the product or multiplication. hope this helps

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Barry buys a package of pasta

bulgar [2K]

Answer:

Pasta: $2.39

Jar of tomato sauce: $3.09

Coupons(-): $0.75+$0.50

Total cost: $4.23

Step-by-step explanation:

The total cost of Barry's purchase is the addition of the cost of purchase of pasta and a jar of tomato sauce, and the value of coupons is reduced from the answer. It would be the final answer.

4 0

3 years ago

HELP PLS I NEED HELP When solving the equation such as 3/5x = 1/9, why would you multiply both sides of the equation by the reci

True [87]

Because 3/5 and 5/3 make a product of 1, so you have one x on the right side.

8 0

3 years ago

Choose a method you prefer to solve for a system of linear equations.<br> 2x + 4y = -4<br> 2x-y=6

Artyom0805 [142]

Answer:

Elimination

x = 2

y = -2

Step-by-step explanation:

Elimination

2x + 4y = -4

2x - y = 6

Subtract the second equation from the first

5y = -10

Divide both sides by 5

y = -2

---------------------

Substitute for y = -2 in the second equation

2x - -2 = 6

2x + 2 = 6

subtract 2 from both sides

2x = 4

Divide both sides by 2

x = 2

7 0

3 years ago

Hat value is needed to fill in the blank to make this trinomial a perfect square trinomial. 4x2 + __x + 81?

Doss [256]

36, because the square root of 4 is 2 and the square root of 81 is 9. You multiply those and then double it to get 36.

4 0

3 years ago

Mrs. Smith's class is working on a variety of science experiments. Each

SVETLANKA909090 [29]

Answer:

66

Step-by-step explanation:

If there are <em>n</em> students, then the number of pairs is $\frac{n(n-1)}{2}$ .

With 12 students, $\frac{12(12-1)}{2} = \frac{132}{2}=66$ pairs can be formed.

The reason the formula works is this: Each of the 12 students can be paired with 11 other students (no student is paired with him/her self). But counting 12 x 11 = 132 counts each pair <u>twice</u>. Example: student A can be paired with student B,..., student B can be paired with student A. The pair was counted two times.

See the attached image that shows pairings of 5 students. There are

5(5 - 1)/2 = 5(4)/2 = 10 pairs.

8 0

3 years ago