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laiz [17]
3 years ago
6

Describe a situation where it is easier to use decimals than fractions and explain why

Mathematics
1 answer:
valentina_108 [34]3 years ago
7 0
In money if you have £6.25 it is easier to write it in decimals
If you are measuring something e.g. 10.3cm long no one writes it 10 3/10 cm
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A(-1,2) B(3,1) C(1,-4) To the new coordinated A'(-2,4) B'(6,2) C'(2,-8) what was the scale factor?
kicyunya [14]

Answer:

Step-by-step explanation:

A(-1, 2)  ==> A'(-2, 4)

B(3,1) ==> B'(6,2)

C(1,-4) ==> C'(2,-8)

Based on the results of each set, the scale factor is 2

A(-1*2, 2*2)=  A'(-2, 4)

6 0
3 years ago
Which shows the following expression after the negative exponents have been eliminated? xy^-6/x^-4 y^2, x=/0 y=/0
Tom [10]
For this case we have the following expression:
 (xy ^ -6) / (x ^ -4y ^ 2)
 By power properties we can rewrite the expression as:
 (x * x ^ 4) / (y ^ 6 * y ^ 2)
 Then, for power properties:
 Same exponents are added:
 (x ^ (4 + 1)) / (y ^ (6 + 2))
 (x ^ 5) / (y ^ 8)
 Answer:
 
An expression after the negative exponents have been eliminated is:
 
(x ^ 5) / (y ^ 8)
3 0
3 years ago
Read 2 more answers
Consconsiderando la función f(x)=x² y la función f (x)=(x+1)²-4responde lo siguiente:
erica [24]

Answer:

Step-by-step explanation:

a) f(x) = x² y f(x) = (x+1)²-4 tienen la misma forma y orientación.

b) f(x) = x² se encuentra debajo y a la izquierda de f(x) = (x+1)²-4.

c) En la función f(x) = (x + 1)²-4 el vértice tiene un desplazamiento horizontal, 1 unidad hacia la izquierda.

d) el vértice de la función f(x) = (x + 1)²-4 está desplazado verticalmente, 4 unidades hacia abajo.

7 0
3 years ago
Bob installed new windows in his house which were advertised to cut his energy bill by 7.1% per month after installation. If his
maxonik [38]

His monthly bill before he installed the new windows was $339.074...

<u><em>Explanation</em></u>

Suppose, his monthly bill before he installed the new windows was  x dollar.

As his energy bill was decreased by 7.1% per month after installation, so <u>the amount of bill decreased</u> =x*\frac{7.1}{100}=0.071x dollar

Given that, his new energy bill was $315. So the equation will be...

x-0.071x= 315\\ \\ 0.929x=315\\ \\ x=\frac{315}{0.929}=339.074....

So, his monthly bill before he installed the new windows was $339.074...



3 0
3 years ago
Use the order of operations to solve 4[2.5 3(20 7)]
liraira [26]
PEMDAS ( Parentheses, Exponents, Multiplication, Division, Addition, Subtraction)

4(2.53(207))

Since there are no equations in the parentheses, or exponents, we skip these, and head straight for multiplication:

4(523.7)

Then, do multiplication again:

2094.8

So that means, 4(2.53(207)) = 2094.8

I assume the brackets mean parentheses, since the absolute value of 523.7 does not mean anything in this equation.
8 0
3 years ago
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