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faltersainse [42]
3 years ago
13

Helen has only $10 and $2 bills with her.

Mathematics
2 answers:
olchik [2.2K]3 years ago
8 0

Answer:

i think it is d

Step-by-step explanation:

sp2606 [1]3 years ago
8 0

Answer:

2 and 5

Step-by-step explanation:

10x + 2y = 30

x = 2

y = 5

10(2)+2(5) = 30

20+10 = 30

30=30

-Gage Millar, Algebra 2 tutor

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Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 133 to 193 cm and
yawa3891 [41]

Answer:

The weight of an adult male who is 172 cm tall is 89.36 kg.

Step-by-step explanation:

The regression equation representing the relationship between height and weight of a person is:

\hat y=-105+1.13x

Here

<em>y</em> = weight of a person

<em>x</em> = height of a person

The information provided is:

\bar x=167.90\ cm\\\bar y=81.47\ kg\\r (X, Y) = 0.228\\p-value=0.023\\\alpha =0.05

The hypothesis to test the significance of the correlation between height and weight is:

<em>H₀</em>: There is no relationship between the height and weight, i.e. <em>ρ</em> = 0.

<em>Hₐ</em>: There is a relationship between the height and weight, i.e. <em>ρ </em>≠ 0.

Decision rule:

If the <em>p</em>-value of the test is less than the significance level, then the null hypothesis will be rejected and vice-versa.

According to information provided:

<em>p</em>-value = 0.023 < <em>α</em> = 0.05

The null hypothesis was rejected at 5% level of significance.

Thus, concluding that there is a relationship between the height and weight.

Compute the weight of an adult male with height, <em>x</em> = 172 cm as follows:

\hat y=-105+1.13x

  =-105+(1.13\times 172)\\=-105+194.36\\=89.36

Thus, the weight of an adult male who is 172 cm tall is 89.36 kg.

5 0
3 years ago
Estimate 43% of 117. (2 points)<br> Show your work to
finlep [7]

Answer:

Let's say 50

Step-by-step explanation:

40% of 100 is 40

50% of 117 is about 59

so number should be a somewhere in between.

8 0
2 years ago
Factor as the product of two binomials x^2-2x+1
Ket [755]

Answer:(x + 1)^2

Step-by-step explanation:

4 0
3 years ago
Solve for x Enter the solutions from least to greatest . (x - 4)(- 5x + 1) = 0 lesser x = greater x =
nataly862011 [7]
Lesser x is 1/2 or 0.3
greater x is 4
4 0
3 years ago
What is the answer for question 7?
Norma-Jean [14]
We know the cofunction identity tan(90-x)=cotx.

Thus, the tangent of 90° minus <span>θ also equals 5.</span>
5 0
3 years ago
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