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Olenka [21]
2 years ago
15

Please help! answer each column (question in picture) for brainliest

Mathematics
2 answers:
Harlamova29_29 [7]2 years ago
4 0

Answer:

4m^{2}k^{2}  ;28k^{2}  ;8 km

9mm^{2}k;63mk;  18m^{2}

Step-by-step explanation:

4k·m^{2}k=4m^{2}k^{2}

4k·7k=28k^{2}

4k·2m=8km

9m·m^{2}k=9mm^{2}k

9m·7k=63mk

9m·2m=18m^{2}

Se multiplican los números y luego las letras

Si se multiplican dos letras iguales lo elevamos al cuadrado

EJEMPLO:m· m=m^{2}

Inga [223]2 years ago
3 0

Answer:

See attachment

Step-by-step explanation:

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vaieri [72.5K]

I'm guessing it is 10? or 7?

5 0
3 years ago
Convert to standard form. 4 hundred thousand 16 thousands 4 hundred 21 tens 12 ones
RoseWind [281]

Step-by-step explanation:

4 0
2 years ago
After a storm, 135 trees out of 180 were left standing. What is the percentage loss of the number of trees?
beks73 [17]

Answer:

Percentage loss of the number of trees is 25\%.

Step-by-step explanation:

Given: After a storm, 135 trees out of 180 were left standing.

To find: What is the percentage loss of the number of trees?

Solution:

We have,

Total number of trees =180

Number of trees left standing =135

Therefore, loss of trees=180-135=45

We now that \text {Loss\%}=\frac{\text{Number of trees left}}{\text{Total number of trees}}\times 100 \%

\implies \text {Loss\%}=\frac{45}{180}\times 100 \%

\implies \text {Loss\%}=\frac{450}{18} \%

\implies \text {Loss\%}=25 \%

Hence, the percentage loss of the number of trees is 25\%.

6 0
3 years ago
Please help and show all work so I can fully understand it, thanks.
seraphim [82]

Answer:

\frac{1}{m-4}

Step-by-step explanation:

\frac{\frac{4m-5}{m^4 -7m^3 +12m^2}}{\frac{4m-5}{m^3 -3m^2}}

Factor the equation:

\frac{\frac{4m-5}{m^2(m^2 -7m+12)}}{\frac{4m-5}{m^2(m-3)}}

\frac{\frac{4m-5}{m^2(m-3)(m-4)}}{\frac{4m-5}{m^2(m-3)}}

Rewrite to suit the format of multiplying two fractions. Remember, dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second. A reciprocal of a fraction is when one switches the place of the numerator and the denominator, that is, the value on top (numerator), and the value on the bottom (denominator).

\frac{4m-5}{m^2(m-3)(m-4)}*\frac{m^2(m-3)}{4m-5}

Simplify, take out common terms that are found on both the numerator and denominator

\frac{4m-5}{m^2(m-3)(m-4)}*\frac{m^2(m-3)}{4m-5}

\frac{1}{m-4}

4 0
3 years ago
A wire 18 cm long is cut into two pieces. The longer piece is 6 cm longer than the shorter piece. Find the length of the shorter
Yuliya22 [10]

Answer:

shorter piece = 6. longer piece = 12

Step-by-step explanation:

short piece = s

long piece = l

l+s= 18

l= 6+s , substitute

6+s+s = 18

6+2s= 18

2s= 18-6

2s= 12

s=12/2

s= 6= shorter piece

l= 6+s

l= 6+6= 12 = longer piece

7 0
2 years ago
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