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weeeeeb [17]
3 years ago
5

How could you use multiplication to find 7+7+7?

Mathematics
2 answers:
Sholpan [36]3 years ago
4 0
7+7+7 is equal to multiplying 7 by 3. (7+7+7=21 and 7x3=21.)
Nuetrik [128]3 years ago
4 0
7x3=21. All multiplication is is repeated addition! Hope I helped!
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Name the property of real numbers illustrated by the equation (x + 8) + 4 = x + (8 + 4)
Hitman42 [59]

Answer:

D. Associative Property

Step-by-step explanation:

The group is being switched around.

7 0
3 years ago
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If x varies directly with y and x = 2.5 when y = 10, funny x when y = 16.
amid [387]

Answer:

Should be 4.0(Not sure tho. my thought process is complicated but to me it makes sense)

Step-by-step explanation:

If y=10 and x =2.5, if y were to = 20, then x would equal 5. so you take that ratio, and say 6 is 3/5's the way to 10, so you also divide 2.5 by 3/5

you get 1.5, you add that to x already and you get 4.0

so if y=16, x should =4.0

3 0
3 years ago
On a recent trip to the convenience store, you picked up 4 gallons of milk, 6 bottles of water and 5 snack size bags of chips. Y
cricket20 [7]

Answer:

Cost of a snack size bag of chips = $0.8

Cost of a water bottle = $1.6

Cost of a gallon of milk = $3.4

Step-by-step explanation:

Let the cost of water bottle = $a

Cost of 1 gallon milk = $b

and cost of 1 bag of chips = $c

So, cost of 4 gallons of milk, 6 bottles of water and 5 bags of chips = $(4b + 6a + 5c)

4b + 6a + 5c = 27.2 -----(1)

Cost of one water bottle = 2 × cost of one bag of chips

a = 2c -----(2)

A gallon of milk = cost of water bottle + $1.80

b = a + 1.8

From equation (2)

b = 2c + 1.8 -----(3)

Now we substitute these values from equations (2) and (3) in equation (1)

4(2c + 1.8) + 6(2c) + 5c = 27.2

8c + 7.2 + 12c + 5c = 27.2

25c = 27.2 - 7.2

c = \frac{20}{25}

c = $0.8

From equation (2)

a = 2×0.8

a = $1.6

From equation (3)

b = 2(0.8) + 1.8

b = 1.6 + 1.8

b = $3.4

Therefore, cost of a snack size bag of chips = $0.8

Cost of a water bottle = $1.6

Cost of a gallon of milk = $3.4

5 0
3 years ago
The variable y varies directly with the variable x.
Roman55 [17]

Answer:

A

Step-by-step explanation:

Took the test

3 0
3 years ago
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/Algebra/<br>Please Help!?<br>​
umka21 [38]

Answer:

answer is b babe

Step-by-step explanation:

5 0
3 years ago
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