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Arturiano [62]
3 years ago
13

Help me pls 27 pnts(:(:

Mathematics
1 answer:
hichkok12 [17]3 years ago
3 0
Answer: 8

Explanation:
The number line of cards goes by 1 and the number line of wool goes by 2.

So if Jillian wants 4 cards then he will have trade 8 wool for it. :)
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The average expenditure on Valentine's Day was expected to be $100.89 (USA Today, February 13, 2006). Do male and female consume
AfilCa [17]

Answer:

Yes. The male and female consumers differ in the amounts they spend.

Step-by-step explanation:

We can express the null and alternative hypothesis as:

H_0: \mu_m=\mu_w\\\\H_1:  \mu_m\neq\mu_w

It is assumed a significance level of 0.05.

The standard deviation of the difference of means is calculated as:

s=\sqrt{\frac{s_m^2}{n_m} +\frac{s_w^2}{n_w} } =\sqrt{\frac{35^2}{40} +\frac{20^2}{30} } =\sqrt{30.625+13.333} =\sqrt{43.958} =6.63

The test statistic is

t=\frac{(M_m-M_w)-0}{s}=\frac{135.67-68.64}{6.63}=10.11

The degrees of freedom are:

df=n_1+n_2-2=40+30-2=68

The P-value for t=10.11 is P=0, so it is smaller than the significance level. The null hypothesis is rejected.

We can conclude that male and female consumers differ in the amounts they spend.

5 0
4 years ago
The nth term of a sequence is n^2 + 20.
Olegator [25]

Answer:

\large\boxed{a)\ 21,\ 24,\ 29}\\\boxed{b)\ \text{five terms}}

Step-by-step explanation:

a_n=n^2+20\\\\a)\\\\\text{Substitute}\ n=1,\ n=2\ \text{and}\ n=3\ \text{to the }\ a_n:\\\\a_1=1^2+20=1+20=21\\\\a_2=2^2+20=4+20=24\\\\a_3=3^2+20=9+20=29

b)\\\\\text{You have to solve the inequality:}\\\\n^2+20

3 0
3 years ago
Find the value of 50-(-15×-8​
hoa [83]

Answer:

-70

Step-by-step explanation:

7 0
3 years ago
I need to know what x equals. <br> HELP!!!!
SSSSS [86.1K]

Answer:

X=4

Step-by-step explanation:

4*4=16+7=23

8 0
3 years ago
Read 2 more answers
True or false Please
nevsk [136]

respuesta:primero verdadero

segundo : no

7 0
3 years ago
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