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dedylja [7]
2 years ago
5

How many numbers less than 1000 are divisible by 7?

Mathematics
1 answer:
Rufina [12.5K]2 years ago
6 0
==> The number of positive integers divisible by 7 but not by 11<span> is </span>142<span> - </span>12<span> = 130. ==>the number of positive integers less than 1000 that are divisible by either 7 or </span>11<span>is </span>142<span> + </span>90<span> - </span>12<span> = </span>220<span>. ==>the number of positive integers less than 1000 that are divisible by exactly by one of 7 and </span>11<span> is </span>220<span> - </span>12<span> = </span>208<span>.</span>
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Answer:

Hello,

answer B

2

Step-by-step explanation:

\dfrac{2}{x} -\dfrac{x}{x+5} =\dfrac{10}{x^2+5x} \\\\we\ suppose\ x\neq 0\ and\ x\neq -5\\\\\text{Reducing to the same denominator}\\\dfrac{2(x+5)-x^2}{x(x+5)} =\dfrac{10}{x^2+5x} \\\\Simplify\ by\ x^2+5x\\\\2x+10-x^2=10\\\\-x^2+2x=0\\\\-x(x-2)=0\\\\roots\ are\ 2 \ and\ 0\ (to\ be\ excluded)\\\\Root=2\\

3 0
3 years ago
A water storage tank has the shape of a cylinder with diameter 14 ft. It is mounted so that the circular cross-sections are vert
4vir4ik [10]

Check the picture below.

neverminding for a few seconds the volume of the cylinder, the percentage in the height used by the water will be the same as the percentage of its volume.  We know the total amount or 100% of the height is 14, so what is 11 in percentage?

\begin{array}{ccll} amount&\%\\ \cline{1-2} 14&100\\ 11&x \end{array}\implies \cfrac{14}{11}=\cfrac{100}{x}\implies 14x=1100 \\\\\\ x = \cfrac{1100}{14}\implies x = \cfrac{550}{7}\implies \boxed{x \approx 78.6}

7 0
2 years ago
The soccer team bought new uniforms for $ 649.62. if there are 12 kids on the team, how much did each uniform cost? ( round answ
lianna [129]

Answer:

$54.14 per soccer uniform

Step-by-step explanation:

649.62/12

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

Suppose h is the inverse of f then

f(x) = y ⇔ h(y) = x

f(x) = y ⇔ 4x = y ⇔ x = y/4

and since x = h(y) then h(y) = y/4

then we can write :

h(x) = \frac{x}{4}

______________________

:)

8 0
3 years ago
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ladessa [460]

Answer:

1) 1/10

2)16/100

3)6..../10

4) 3/5

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Step-by-step explanation:

8 0
3 years ago
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