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likoan [24]
3 years ago
7

Why does math exist at all

Mathematics
2 answers:
Lunna [17]3 years ago
7 0

Answer:

to make life harder, sadly

Step-by-step explanation:

12345 [234]3 years ago
7 0

Answer:

to make our lives difficult :')

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Find the missing side length.
Dima020 [189]

Answer:

a = 4 \\ b = 2 \sqrt{2}

Its a right angle triangle so trigonometry is used.

a is the hypotenuse, b is the adjacent.

Use sin to find a. Use tan to find b.

6 0
3 years ago
What is a square root of 361 ?<br> plz help
slava [35]

Answer:

19 is the square root of 361.

5 0
3 years ago
Read 2 more answers
If u know that y=30 then what is y=4x-2
Marta_Voda [28]

Answer:

x = 8

Step-by-step explanation:

y = 4x - 2

30 = 4x - 2

+ 2        + 2

32 = 4x

/ 4     / 4

8 = x

4 0
3 years ago
What is the distance between the zeros of the function defined by 6(2x2+x-8)-2x(2x-1)
Evgen [1.6K]
12x^2+x-8 - (4x^2-1)
12x^2+x-8-4x^2+1
8x^2 + x - 7 =0

8x^2 + 8x - 7x -7 = 0
8x ( x + 1 ) - 7 ( x + 1 ) = 0
(8x - 7) (x + 1) =0
8x -7 = 0
x + 1 = 0
x = 7/8 and x = -1
7 0
3 years ago
A random sample of 8888 eighth grade​ students' scores on a national mathematics assessment test has a mean score of 278278. Thi
crimeas [40]

Answer:

Step-by-step explanation:

Given that sample size n = 88, for eight grade students

scores on a national mathematics assessment test has a mean score of 278. This test result prompts a state school administrator to declare that

x bar >270

H_0: xbar = 270\\H_a: x bar >270

(One tailed test at 15% sign level)

Since sigma, population sd is known and sample size is large we use z test

Std error = \frac{\sigma}{\sqrt{n} } =4.051

Mean difference 278-270=8

Z statistic = \frac{8}{4.051} =1.975

p value = 0.024

Since p <alpha, the administrator's declaration is correct.

3 0
3 years ago
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