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sergey [27]
3 years ago
8

Evaluate when x=2 and y=3. * 3x-2 y3 Your answer

Mathematics
1 answer:
podryga [215]3 years ago
3 0

Answer:

i think its 4

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Solve the inequality for x - 7 less than 5
arsen [322]

The answer will be 2 because x-7 less than 5bwill equal 2

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Subtract. 6 – (–5)a. –11b. –1c. 1d. 11
irina [24]
6-(-5)
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1.Simplify 5 to the 5th over 5 to the 8th.
timurjin [86]
Q1. The answer is <span>1 over 5 to the 3rd power.

</span>5 to the 5th is 5⁵
5 to the 8th is 5⁸
5 to the 5th over 5 to the 8th is \frac{ 5^{5} }{ 5^{8} }
To simplify, we will use two rules: 
\frac{ x^{a}}{ x^{b} } = x^{a-b} \\ x^{-a} = \frac{1}{ x^{a}}
Therefore:
\frac{ 5^{5} }{ 5^{8} } = 5^{5-8} =5^{-3}= \frac{1}{5^{3}}
\frac{1}{5^{3}} is the same as 1 over 5 to the 3rd power.


Q2. The answer is <span>(53)−4.

The exponents are multiplied when are expressed in the form:
</span>(x^{a}) ^{b}= x^{a*b}
So, (5^{3} )^{-4}=5^{3*(-4)}=5^{-12}

Other choices are incorrect:
<span>one third to the 4th times one third to the 7th is </span>( \frac{1}{3} )^{4} *( \frac{1}{3} )^{7}=( \frac{1}{3} )^{4+7}
3 to the 7th over 3 to the 15th is \frac{ 3^{7} }{3^{15}} =3^{7-15}
<span>45 ⋅ 42 is </span>4^{5}* 4^{2} =  4^{5+2}
3 0
3 years ago
Read 2 more answers
What is the vertex and intercepts for y=(5x-2)(2x+3)
Sophie [7]

Answer:

vertex = (-\frac{11}{20} ,-\frac{361}{40} )

Intercepts for x = (\frac{2}{5} ,0), (-\frac{2}{5} ,0)

intercepts for y = (0,-6)

4 0
3 years ago
Trigonometry word problems
astraxan [27]

From a point on the ground 47 feet from the foot of a tree, the angle of elevation of the top of the tree is 35º. Find the height of the tree to the nearest foot.
7 0
3 years ago
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