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AleksAgata [21]
2 years ago
6

Grace thought of a number, added 7, multiplied by 3, took away 5 and divided by 4 to give an answer of 7.

Mathematics
2 answers:
zzz [600]2 years ago
7 0

Answer:

The number Grace took was 4.

Step-by-step explanation:

Let us assume that she took a number 'x'

Now she added 7 in it, x+7

Then multiplied by 3 ,  3(x+7) = 3x+21

Then took away or subtracted 5.

3x+21-5=3x+16

And divided by 4 to get answer 7.

\frac{3x+16}{4}=7

Now we will solve this to get x.

3x+16=28

=> 3x=28-16

=> 3x=12

x = 4

Hence, the number Grace took was 4.

Gemiola [76]2 years ago
4 0
7 * 4 = 28
28 + 5 = 33
33 / 3 = 11
11 - 7 = 4

The number she thought of is 4
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The cat is 2/3 feet tall

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The Dowers make pumpkin pie. If each person wants three slices of pie,and each pie is Cut into 9 slices, how many pies do they n
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They need to make 5 pies for 15 people.

Step-by-step explanation:

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5 0
2 years ago
If the five digit number aa448 is divisible by 9, what digit does a represent?
kaheart [24]

Answer:

a represent 1

and number is 11448.

Step-by-step explanation:

We know that a number is divisible by 9 if the sum of its digit is divisible by 9.

Given number aa448

sum of 4+4+8 = 16

number divisible by 9, 18 , 27,36

as we see sum of 448 is 16 , hence sum of a+a+4+4+8 should be  number divisible by 9 and greater than 16 which is 18, 27,36

Let see of if sum of digits of aa448 is divisible by  18

a+a+4+4+8 = 18

2a + 16 = 18

2a = 18-16 = 2

a =2/2 = 1

Thus, number will be 11448

________________________________________

Let see of if sum of digits of aa448 is divisible by  27

a+a+4+4+8 = 27

2a  = 27 - 16

2a = 11 = 2

a =11/2 = 5.5

as digit cannot be fraction of decimal, it can take value from 1 to 9 hence

sum of digits of aa448 is not divisible by  27

______________________________________________

Let see of if sum of digits of aa448 is divisible by  36

a+a+4+4+8 = 36

2a + 16 = 36

2a = 36-16 = 20

a =20/2 = 10

as digit can take value from 1 to 9 hence sum of digits of aa448 cannot  be divisible by  36 or any higher number than 36 which is divisible by 9.

Thus , a represent 1

and number is 11448.

5 0
2 years ago
Which number has the lowest value ?<br>a) 1/2 +0.30 b) 0.10 + 3/4 c) 1/3 + 0.50 d) 1/3 +0.40<br>​
Leto [7]

Hey!

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

Let's Solve A:

1/2 = 0.5

0.5 + 0.30 = 0.80

a = 0.80

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

Let's Solve B:

3/4 = 0.75

0.10 + 0.75 = 0.85

b = 0.85

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

Let's Solve C:

1/3 ≈ 0.33

0.33 + 0.50 = 0.83

c = 0.83

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

Let's Solve D:

1/3 ≈ 0.33

0.33 + 0.40 = 0.73

d = 0.73

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

Answer:

By solving each equation we can see that option A has the lowest value!

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

Hope This Helped! Good Luck!

8 0
2 years ago
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