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Iteru [2.4K]
3 years ago
8

On a shopping trip in Los​ Angeles, Rosaria Perez ordered 120 pieces of​ jewelry: a number of bracelets at ​$9 each and a number

of necklaces at ​$11 each. She wrote a check for ​$1,120 to pay for the order. How many bracelets and how many necklaces did Rosaria​ purchase?
Mathematics
2 answers:
Papessa [141]3 years ago
8 0

Answer:

6 of each

Step-by-step explanation:

9+11=20

120 divided by 20 =6

9x6=54

11x6=66

54 + 66= 120

so six of each

belka [17]3 years ago
5 0

Answer:

thanks for points!

Step-by-step explanation:

i rly need it merry christmas!!

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147 centigrams is equivalent to how many grams
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3 years ago
Adult tickets to a basketball game cost $5. Student tickets cost $1. A total of $3,169 was collected on the sale of 1,325 ticket
eimsori [14]

Answer:

461 adults and 864 students

Step-by-step explanation:

We can set-up a system of equations to find the number of adults. We know students and adults attended. We will let s be the number of students and a be the number of adults. Since 1,325 tickets were purchased, then s+a=1325.

We also know that a total of $3,169 was collected and adult tickets cost $5 each and students cost $1 each. We can write 1s+5a=3169.

We will solve by substituting one equation into the other. We first solve the first equation for s which is s=1325-a. Substitute s=1325-a into 1s+5a=3169. Simplify and isolate the variable a.

1(1325-a)+5a=3169

1325-a+5a=3169

1325+4a=3169

1325-1325+4a=3169-1325

4a=1844

a=461

This means that 461 adults attended and 864 students attended since 864+461=1325.

8 0
4 years ago
i just confused on what the triangular prisms volume is. i think i’m doing it correctly but online says something different.
DanielleElmas [232]

Answer:

The answer for just the triangular prism's volume is 175 inches cubed.

If you need me to add how to find the volume of the rectangular prism, please comment that you also need this then.

Step-by-step explanation:

A triangular prism's volume is equal to the base area (which is a triangle) multiplied by the length of the prism.

So find the area of the triangle and multiply it by 10 inches in this case.

So  they are going to try to confuse on the triangle here because of they give three measurements where one of them is unnecessary in the formula .5bh.

The b and h represent the base and height respectively. The base and height of a triangle when intersected form 90 degree angle.

So we are using the 5 inches and 7 inches for it's height and base respectively.

The 9 inches is unnecessary in the calculation.

The volume if the triangular prism is found by doing .5(7)(5) times 10. The answer is in inches cube since inches*inches*inches=inches cubed or in^3.

.5(7)(5)(10)

.5(10)(7)(5)

(5)(35)

175

The answer for just the triangular prism's volume is 175 inches cubed.

If you need me to add how to find the volume of the rectangular prism, please comment that you also need this then.

4 0
3 years ago
Factor completely 3x2 + x + 7.
OlgaM077 [116]
It should be prime :DDD
6 0
4 years ago
Read 2 more answers
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