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3 years ago

Help plzzzzzz plzzzzzzzzzzzz

Mathematics

1 answer:

UkoKoshka [18]3 years ago

5 0

Answer:

x = 20°

y = 70°

Step-by-step explanation:

the angle adjacent to the 40° angle must be 140° because the two angles form a straight line (which contains 180°)

in the isosceles triangle with the 'x', that means the other two angles must be equal and are (180-140) ÷ 2, which equals 20°

to find 'y', consider the larger right triangle with angles of 90° and 20°; angle y must equal 180 - (90 + 20) = 70°

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A textbook has 428 pages numbered in order starting with 1. You flip to a random page in the book in a way that it is equally li

kirza4 [7]

I believe your answer is 1/428
Because 45 only appears once

5 0

3 years ago

A newsletter publisher believes that above 41A% of their readers own a personal computer. Is there sufficient evidence at the 0.

klemol [59]

Complete Question

A newsletter publisher believes that above 41% of their readers own a personal computer. Is there sufficient evidence at the 0.10 level to substantiate the publisher's claim?

State the null and alternative hypotheses for the above scenario.

Answer:

The null hypothesis is $H_o : p \le 0.411$

The alternative hypothesis is $H_a : \mu > 0.41$

Step-by-step explanation:

From the question we are told that

The proportion is $p = 0.41$

Generally the null hypothesis is $H_o : p \le 0.411$

The above condition represents the null hypothesis because it contains and equality in its condition

The alternative hypothesis is $H_a : \mu > 0.41$

6 0

3 years ago

A number from 18 to 24 is drawn at random. What is the probability that the answer is a number less than 24?

icang [17]

So there are 6 numbers between 18 and 24. The probability of choosing a number less than 24 would be 5/24 or 20.83%

5 0

3 years ago

Read 2 more answers

Is x +1 a factor? Yes or why not?

Irina-Kira [14]

Answer:

It can be a factor if you have f(-1) = 0

That's binomial theorem as I remember.

7 0

2 years ago

4x squared + 29x + 30=0

saveliy_v [14]

So for this equation we're going to complete the square.

Firstly, what two terms have a product of 120x^2 and a sum of 29x? 24x and 5x. Replace 29x with 24x + 5x: $4x^2+24x+5x+30=0$

Next, factor 4x^2 + 24x and 5x + 30 separately. Make sure that they have the same quantity inside the parentheses: $4x(x+6)+5(x+6)=0$

Now you can rewrite the equation as: $(4x+5)(x+6)=0$

Now using zero product property, solve for x:

$4x+5=0\\ 4x=-5\\ x=-1.25\\ \\ x+6=0\\ x=-6$

In short, x = -1.25 and -6

8 0

4 years ago