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2 years ago

Write a mathematical sentence for the inequality twice the difference of a number and seven is less than or equal to forty

2 answers:

5 0

$2x + 7\leqslant 40$
Sounds like that to me but that is symbolically showing of that's what your teacher means as mathematical sentence

dem82 [27]2 years ago

5 0

Answer:

The other answer is right

Step-by-step explanation:

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3 years ago

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3 years ago

Triangle congruence and similarity! (picture included)

skelet666 [1.2K]

Answer:

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Step-by-step explanation:

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2 years ago

Use properties of limits and algebraic methods to find the limit, if it exists. (If the limit is infinite, enter '[infinity]' or

soldi70 [24.7K]

Answer:

The limit of this function does not exist.

Step-by-step explanation:

$\lim_{x \to 3} f(x)$

$f(x)=\left \{ {{9-3x} \quad if \>{x \>< \>3} \atop {x^{2}-x }\quad if \>{x\ \geq \>3 }} \right.$

To find the limit of this function you always need to evaluate the one-sided limits. In mathematical language the limit exists if

$\lim_{x \to a^{-}} f(x) = \lim_{x \to a^{+}} f(x) =L$

and the limit does not exist if

$\lim_{x \to a^{-}} f(x) \neq \lim_{x \to a^{+}} f(x)$

Evaluate the one-sided limits.

The left-hand limit

$\lim_{x \to 3^{-} } 9-3x= \lim_{x \to 3^{-} } 9-3*3=0$

The right-hand limit

$\lim_{x \to 3^{+} } x^{2} -x= \lim_{x \to 3^{+} } 3^{2}-3 =6$

Because the limits are not the same the limit does not exist.

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3 years ago

Miguel borrowed $1,800for 2 years and ended up paying $180 in simple interest . What was the interest rate

Gala2k [10]

It was 10 % 1,800 ÷10 =180

3 0

3 years ago