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BARSIC [14]
3 years ago
8

Anna is 7 less than twice her brother Brian’s age. He is 13 years old. How is Anna?

Mathematics
2 answers:
kvasek [131]3 years ago
7 0

Answer:

19

Step-by-step explanation:

13x2=26 and 7 less than that would be 19

yuradex [85]3 years ago
6 0

Answer:

anna is 19 years old

Step-by-step explanation:

13 x 2 = 26

26-7=19

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The quotient of two numbers is 4 and their difference is 39. What is the smaller number of the two?
MatroZZZ [7]

Answer:

13

Step-by-step explanation:

x/y = 4

x=4y

x - y = 39

4y - y = 39

3y = 39

y= 13

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Mariana solved the equation below. Identify her ERROR and EXPLAIN what she did wrong. -3(2x-4)=-12 -6x-12=-12 -6x=0 x=0
nydimaria [60]

Answer:

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

Step-by-step explanation:

Mariana workings:

-3(2x - 4) = -12

-6x - 12 = -12

Her error was multiplying -3 and -4 which gives +12 but she wrote -12 instead

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Correct workings:

-3(2x - 4) = -12

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x = -24/-6

x = 4

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3 years ago
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Step-by-step explanation:

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2 years ago
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Which equation can be used to solve for x in the following diagram?
Setler [38]

∑ Hey, petalssquad10 ⊃

Answer:

( 10 x + 10 ) = 110

Step-by-step explanation:

As you can see this following diagram shown a vertical angles which  are angles that are opposite of each other when two lines cross. You can also see it kind of look like a "x". Vertical angles also means that they have the same angle measure. A example is if this angle is "110" then the other sides equal to "110''.

Hence, the equation we can be used to solve for x in the following diagram is:

( 10 x + 10 ) = 110

You can also refer to the image below:

<u><em>xcookiex12</em></u>

<u><em></em></u>

<em>8/18/2022</em>

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