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3 years ago

HELP ME!!! I BEGG , HELP

Mathematics

1 answer:

julia-pushkina [17]3 years ago

6 0

1.) 9.1 kb
2.) 12.32 cm
3.) 5.2 lb were lime flavor
4.) 132. 53 oz
5.) 10.1 kg
6.) 37.40 calories
7.) 42.70 gigabytes
8.) 13.54 inches

Just simple adding and subtracting. I hope this helps hun!

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.8x-.3y=5<br> 1.4x-.9y=11

PolarNik [594]

Answer:

(x,y)=(-22/49,-5566/147)

Step-by-step explanation:

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3 years ago

Plz help me !!!!!!!!!!

Brrunno [24]

Answer: a) 27

<u>Step-by-step explanation:</u>

$81^{\frac{3}{4}}=(3^4)^{\frac{3}{4}}=3^{\frac{12}{4}}=3^3=\boxed{27}$

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3 years ago

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3 years ago

If m<13=m<15=m<7, what conclusions can you make about lines a, b, c, and d?

Strike441 [17]

Answer:

option D

Lines a and b are parallel and lines c and d are parallel.

Step-by-step explanation:

Given in the question four lines a , b, c, d.

<h3>Prove one</h3>

If two parallel lines (a,b) are cut by a transversal(d), then corresponding angles m<7 and m<15 are congruent.

They are know as corresponding angles.

Hence lines a and b are parallel.

<h3>Prove two</h3>

If two parallel lines (c,d) are cut by a transversal(d), then corresponding angles m<13 and m<15 are congruent.

They are know as corresponding angles

Hence lines c and d are parallel

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3 years ago

Can you conclude with a high degree of confidence that the population means for Iowa and New Jersey students are different? A.

Katen [24]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Option A is correct

Step-by-step explanation:

From the question we are told that

The 95% confidence interval of the mean score of all New Jersey third graders is (58.957 , 63.043)

The sample size is n = 184

The sample average is $\mu = 65 \ points$

The standard deviation is $\sigma = 13 \ points$

The 90% confidence interval for the difference in mean score between lowa and New Jersey is (-6.33 , -1.67 )

The p-value is $p-value = 0.0048$

Generally given that the p-values is very low compared to the level of significance (100 -90 = 10% = 0.10 ) we can reject the null hypothesis which is usually a claim that the means of the population are the same )

Hence the population means are different .

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3 years ago