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beks73 [17]
3 years ago
7

15 subtracted from twice a number

Mathematics
1 answer:
yarga [219]3 years ago
8 0
The answer would be 13
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Can someone solve this
KiRa [710]

\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} C=32 \end{cases}\implies 32=2\pi r\implies \cfrac{32}{2\pi }=r \\\\\\ \cfrac{16}{\pi }=r\implies 5.092958178940651\approx r\implies \stackrel{\textit{rounded up}}{5.1=r}

6 0
3 years ago
Read 2 more answers
The value of a two-digit number is 10 more than 3 times the sum of its digits. The units digit is 1 more than twice the tens dig
mrs_skeptik [129]

Answer:

49

Step-by-step explanation:

the number is "ab" (2 digits).

ab - 10 = 3×(a+b)

a number is actually the sum of multiplying the digits with their associated powers of 10.

a×10 + b - 10 = 3a + 3b

7a - 2b = 10

b-1 = 2×a

b = 2a + 1

7a - 2×(2a+1) = 10

7a - 4a - 2 = 10

3a = 12

a = 4

b = 2×4 + 1 = 9

8 0
3 years ago
Mel<br> used partial quotients to divide 145 by 5. What can be a partial quotient?
nlexa [21]

Answer:

Answer will be 29.

Step-by-step explanation:

When you divide 145 by 5 that is:

145/5 = 29

29 can't be divided further.

Hence partial quotient will be 29 here.

4 0
3 years ago
5. Mark's brother is five years older than Mark.
AleksAgata [21]

Answer:

9

Step-by-step explanation:

Let's say Mark is M and his brother is B.

M+5=B

M+B=23

Now we can solve using subsitution.

M+M+5=23

(Subtract 5 from both sides)

2M=18

M=9

Hope this helped!

8 0
3 years ago
The length of Albert's rectangular are listed below.
trapecia [35]
A. Length - 100 ft Width - 50 ft is the measurement of Tony's backyard.

Albert's Perimeter = 2(l+w) = 2(40+20) = 2(60) = 120 ft.

Tony's Perimeter = 120 ft * 2.5 = 300 ft
Tony's length = 40 ft * 2.5 = 100 ft
Tony's widht = 20 ft * 2.5 = 50 ft

To check tony's perimeter:
P = 2(l + w) = 2 (100 + 50) = 2 (150) = 300 ft. 
3 0
3 years ago
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