Answer:
3550
Convert to decimal.
0.7
Multiply 0.7
by 100
to convert to a percentage.
0.7⋅100
Simplify 0.7⋅100
.
70%
Step-by-step explanation:
The answer is E because 3 x 0 - 4 x -2 = 8
Answer:
99.7% of the sample proportions will fall between 0.133 and 0.307.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean = 0.22
Standard deviation = 0.029
99.7% of the sample proportions will fall within which of the following intervals?
Within 3 standard deviations of the mean.
Lower end: 0.22 - 3*0.029 = 0.133
Upper end: 0.22 + 3*0.029 = 0.307
99.7% of the sample proportions will fall between 0.133 and 0.307.
8^2 /2+5(15-7)
=64/2+75-35
=32+40
=72
<span><span>3<span>(<span>5−9</span>)</span></span>+<span>4<span>(<span>4−9</span>)
</span></span></span><span>=<span><span><span>(3)</span><span>(<span>−4</span>)</span></span>+<span>4<span>(<span>4−9</span>)
</span></span></span></span><span>=<span><span>−12</span>+<span>4<span>(<span>4−9</span>)
</span></span></span></span><span>=<span><span>−12</span>+<span><span>(4)</span><span>(<span>−5</span>)
</span></span></span></span><span>=<span><span>−12</span>+<span>−20
</span></span></span><span>=<span>−32
</span></span><span><span>10<span>(<span>9−18</span>)</span></span>−<span>32
</span></span><span>=<span><span><span>(10)</span><span>(<span>−9</span>)</span></span>−<span>32
</span></span></span><span>=<span><span>−90</span>−<span>32
</span></span></span><span>=<span><span>−90</span>−9
</span></span><span>=<span>−<span>99
</span></span></span><span><span>−<span>12<span>(<span>5−7</span>)</span></span></span>−<span>10<span>(<span>2−5</span>)
</span></span></span><span>=<span><span><span>(<span>−12</span>)</span><span>(<span>−2</span>)</span></span>−<span>10<span>(<span>2−5</span>)
</span></span></span></span><span>=<span>24−<span>10<span>(<span>2−5</span>)
</span></span></span></span><span>=<span>24−<span><span>(10)</span><span>(<span>−3</span>)
</span></span></span></span><span>=<span>24−<span>(<span>−30</span>)
</span></span></span><span>=<span>54</span></span>
Answer:
x = 23.33 hr Rodriguez sprinkler
y = 26.66 hr Hill sprinkler
Step-by-step explanation: INCOMPLETE QUESTION
Requiered information:
the water output rate for both sprinkler families
We assume : Rodriguez family 40 lts/hr
Hill family 35 lts/ hr
Total water output 1900 lts
and total combined hours working is 50 hr
Let call "x" time in hours sprinkler of Rodriguez family worked
and "y" time in hours sprinkler of Hill family worked
Then if total output was 1900 lts
40*x + 35*y = 1900 and x + y = 50
We have a two equation system, solving
y = 50 - x ⇒ 40*x + 35 * ( 50 - x )
40x = 1750 - 35x
75 x = 1750 ⇒ x = 1750/75 ⇒ x = 23.33 hr
and y = 50 - 23.33 ⇒ y = 26.66 hr
