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andrew-mc [135]
2 years ago
14

Which inequality is the same as 7-2/b <5/b

Mathematics
2 answers:
Stells [14]2 years ago
7 0

Answer:

\large\boxed{0

Step-by-step explanation:

Domain:\ b\neq0\\\\7-\dfrac{2}{b}

Stels [109]2 years ago
5 0

Answer with explanation:

The given Inequality is:

 \rightarrow 7-\frac{2}{b}< \frac{5}{b}\\\\\rightarrow 7-\frac{2}{b}+\frac{2}{b}< \frac{5}{b}+\frac{2}{b}\\\\\rightarrow 7 < \frac{7}{b}\\\\\rightarrow b < \frac{7}{7}\\\\\rightarrow b

→For, b=0 this inequality will be undefined.For , b <0 the inequality does not hold true because, for example,for b= -1, →7 <-7 is untrue, so for all negative value of b , the inequality does not hold true.

→The inequality which is same as inequality given is≡→0< b<1.

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Five years ago, John's age was half of the age he will be in 8 years. How old is he now?
notka56 [123]
J-5=0.5J+8
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8 0
2 years ago
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Kate borrowed $400 from her friend. She will repay this amount plus 3 percent simple interest after one year. What is the total
tekilochka [14]
The answer is $412.

Let's first calculate simple interest. Simple interest (I) can be expressed as:
I = P * r * t
P - principal
r - rate
t - time period

It is given:
I = ?
P = $400
r = 3% = 0.03
t = 1 year

Therefore:
I = P * r * t = 400 * 0.03 * 1 = 12

The total amount Kate will repay is the principal amount (P) plus 3% simple interest (I):
P + I = 400 + 12 = $412
6 0
3 years ago
A researcher at the University of Washington medical school believes that energy drink consumption may increase heart rate. Supp
Nana76 [90]

Answer:

Step-by-step explanation:

Given that:

mean μ = 70

sample size = 25

sample mean = 73

standard deviation = 7

level of significance = 0.10

The null hypothesis and the alternative hypothesis can be computed as follows:

\mathtt{H_o : \mu = 70} \\ \\  \mathtt{H_1 : \mu > 70 }

The z score for this statistics can be calculated by using the formula:

z = \dfrac{X- \mu}{\dfrac{\sigma}{\sqrt{n}}}

z = \dfrac{73- 70}{\dfrac{7}{\sqrt{25}}}

z = \dfrac{3}{\dfrac{7}{5}}

z = \dfrac{3 \times 5}{{7}{}}

z = 2.143

At level of significance of 0.10

degree of freedom = n -1

degree of freedom = 25 - 1

degree of freedom = 24

The p - value from the z score at   level of significance of 0.10 and degree of freedom of 24 is:

P - value = 1 - (Z < 2.143)

P - value =  1 - 0.9839

P - value =  0.0161

Decision Rule: since P value is lesser than the level of significance, we reject the null hypothesis.

Conclusion: We conclude that energy drink consumption increases heart rate.

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3 years ago
Need help quick. Find the measure of x in each figure
IgorLugansk [536]

Step-by-step explanation:

x = 20

plz mark my answer as brainlist plzzzz.

<em>hope </em><em>this</em><em> will</em><em> be</em><em> helpful</em><em> to</em><em> you</em><em> </em><em>.</em>

7 0
2 years ago
Number 76? Someone plz help!
mariarad [96]
The answer is D, 

34% * 6.66 = <span>2.2644

6.66 - </span>2.2644 = <span>4.3956 </span>≈<span> 4.40</span>
6 0
3 years ago
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