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Alex777 [14]
3 years ago
7

What is the smallest whole number that is equal to seven times the sum of its digits?

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
5 0

Answer:

21

Step-by-step explanation:

DochEvi [55]3 years ago
5 0
21.

Explanation:

The two-digit number ab stands for 10a + b since the first digit represents 10s and the second represents units. If 10a + b = 7(a + b), then 10a + b = 7a + 7b, and so 3a = 6b, or, more simply, a = 2b. That is, the second digit must be twice the first. The smallest such number is 21.
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In equilateral △ABC, y = ?
Nina [5.8K]
Well since it’s equilateral then we know that x+3x+2x=180/3=6
So 6x=6 x=6
Angle ACB is gonna be 60 degrees (bc it’s equilateral)
So we can do 3x+2x+60+y=180
So we have 3+2+60+y=180
So y will equal 115

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7 0
4 years ago
Reduce to Standard form : (a) -21/91 (b) 32/(-256)​
sweet [91]

Answer:

a) -3/13

b) -1/8

Step-by-step explanation:

a)  - (21 / 7) / (91 / 7) = 3/13

b) (32 / 32 ) / - (256 / 32) = -1/8​

5 0
3 years ago
Evaluate the following expression. Enter your answer in simplest form.
lara [203]

Answer:

1.6

Step-by-step explanation:

1/   4/2+2^2

2*2=4+2=6

4/6=.6

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8 0
3 years ago
N is the centriod of triangle. Find XN if XG = 33​
Maksim231197 [3]

Answer:

22

Step-by-step explanation:

The centroid divides a median in two parts that have this ratio = 1/3 and 2/3

In particular the part between the vertex and the centroid is 2/3 of the median.

So we have:

XN = (33 * 2)/3 = 22

3 0
3 years ago
How do u do exponents<br>​
Gelneren [198K]

Answer:

Step-by-step explanation:

The exponent "product rule" tells us that, when multiplying two powers that have the same base, you can add the exponents. In this example, you can see how it works. Adding the exponents is just a short cut! The "power rule" tells us that to raise a power to a power, just multiply the exponents.

7 0
4 years ago
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