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Wewaii [24]
2 years ago
11

Hiya !

Mathematics
2 answers:
Aleksandr [31]2 years ago
8 0

Answer:

root 25

Step-by-step explanation:

root 25 is 5, and every other number may not be able to be written as a whole number (please give brainliest)

Brrunno [24]2 years ago
8 0

Answer:

D) √(25)

Step-by-step explanation:

√(25) is a rational number because it is a perfect square of 5.

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In a multiple choice exam, there are 5 questions and 4 choices for each question (a, b, c, d). Nancy has not studied for the exa
Elina [12.6K]

Answer: a) 0.07910, b) 0.000976, c) 0.7626

Step-by-step explanation:

Since we have given that

Number of questions = 5

Number of choices = 4

P(getting correct) = \dfrac{1}{4}=0.25

a) the first question she gets right is the 5th question?

P(getting 4 wrongs answers and one right answer) is given by

(1-0.25)^4\times 0.25\\\\=0.75^4\times 0.25\\\\=0.07910

b) she gets all of the questions right?

P(all right )= 0.25^5=0.000976

c) she gets at least one question right?

1-P(All of them wrong)

=1-(1-0.25)^5\\\\=1-0.7565\\\\=1-0.2373\\\\=0.7626

Hence, a) 0.07910, b) 0.000976, c) 0.7626

8 0
3 years ago
a car travels along the highway to yuma at steady speed. when it begins, it is 400 miles from yuma. After 7 hours, it is 59 mile
klemol [59]

Answer:

y= -50x + 400

Step-by-step explanation:

-50 miles from the place which means they are going further and further away so it is negative. And its 400 because y=mx+b the b is 400 because thats where they started.  Also it said it was correct on A-p-e-x.

4 0
3 years ago
Rewrite the expression −7/8 − 2 1/4 ​as the sum of two numbers.
pychu [463]

Answer:

-3 1/8.

Step-by-step explanation:

−7/8 − 2 1/4

= -7/8 + -9/4

= -7/8 - 18/8

= -25/8

= -3 1/8.

4 0
3 years ago
Solve for x: x5 + x4 − 7x3 − 7x2 − 144x − 144 = 0
motikmotik

x^5 + x^4 - 7x^3 - 7x^2 -144x - 144 = 0 \\x^4(x+1)-7x^2(x+1)-144(x+1)=0\\(x^4-7x^2-144)(x+1)=0\\\\x+1=0\Rightarrow x=-1\\\\x^4-7x^2-144=0\\x^4-16x^2+9x^2-144=0\\x^2(x^2-16)+9(x^2-16)=0\\(x^2+9)(x^2-16)=0\\(x^2+9)(x-4)(x+4)=0\\\\x^2+9=0\vee x-4=0 \vee x+4=0\\x=4 \vee x=-4\\\\x\in\{-4,-1,4\}

6 0
3 years ago
Read 2 more answers
25 points plus will mark brainliest!!!<br><br>Find angle ABD.<br>​
Sloan [31]

Step-by-step explanation:

Remember that angles in the same segment are equal.

In here, AD is the segment, which means that angle ACD = angle ABD = 28°.

5 0
2 years ago
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