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2 years ago

I need help. Please anyone help :D

Mathematics

1 answer:

butalik [34]2 years ago

5 0

Answer:

I say 1. and 2

Step-by-step explanation:

Have a good day :3

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Helppppppppppppppppppppppppppppppp

LuckyWell [14K]

Answer:
10√3 which is the last option

Explanation:
√30 * √10 = (30*10)^1/2
= 300^1/2

300 = 100 * 3
Therefore:
√300 = √100 * √3 = 10√3

Hope this helps :)

5 0

3 years ago

Is 4/7 bigger or smaller than 3/5

blondinia [14]

$\frac{4}{7}=\frac{4 \times 5}{7 \times 5}=\frac{20}{35} \\
\frac{3}{5}=\frac{3 \times 7}{5 \times 7}=\frac{21}{35} \\ \\
\frac{20}{35} < \frac{21}{35} \\ 
\Downarrow \\
\frac{4}{7} < \frac{3}{5}$

4/7 is smaller than 3/5.

3 0

3 years ago

Read 2 more answers

Within 11 years, the age of Peter will be half the square of the age he was 13 years ago. Calculate the current age of Peter. Re

OLga [1]

Answer:

ctto JBarnum

Step-by-step explanation:

P+11=(1/2)(P-13)^2

P+11=(1/2)(P^2-26p+169)

2(P+11)=(1/2)(2)(P^2-26p+169)

2P+22=P^2-26p+169

0=P^2-28p+147 ( -7 and -21)

(P-7)(P-21)=0

P=7,21 (cant be 7 as 13 years from 7 is negative so peter is 21)

checking:

21+11=32

32=(1/2)(21-13)^2

32=(1/2)(8)^2

32=(1/2)64

32=32

correct

4 0

3 years ago

The approximate distance between J and K is units. The approximate distance between K and L is units. The approximate distance b

Dima020 [189]

Count the distance d, which gives you 7.

Use Pythogarean theorem to find c:
${a}^{2} + {b}^{2} = {c}^{2}$
Plug in the numbers:
${4}^{2} + {3}^{2} = {c}^{2} \\ \\ = 16 + 9 \\ \\ = 25 \\ \\ c = \sqrt{25} = 5$
c is 5.

Same thing with g:
${e}^{2} + {f}^{2} = {g}^{2} \\ \\ {g}^{2} = {4}^{2} + {4}^{2} \\ \\ = 16 + 16 \\ \\ = 32 \\ \\ g = \sqrt{32} = 4 \sqrt{2} = 5.66$
g equals 5.66.

7 0

3 years ago

Use the Distributive Property to multiply. 2(b – 7)

mr Goodwill [35]

Answer:

2b - 14

Step-by-step explanation:

2(b – 7)

2b - 14

8 0

2 years ago

Read 2 more answers