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4 years ago

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Mathematics

1 answer:

NikAS [45]4 years ago

3 0

75 degrees because If you subtract 15 from 90 you get 75

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Find the value of x and y.

NeX [460]

Answer:

x = 4, y = 2

Step-by-step explanation:

Given quadrilateral is a parallelogram. Diagonals of a parallelogram bisects each other.

$\therefore \: 3x = 12 \\ \therefore \: x = \frac{12}{3} \\ \huge \red{ \boxed{\therefore \: x =4}} \\ \\ \therefore \: 4y = 8 \\ \therefore \: y = \frac{8}{4} \\ \huge \purple{ \boxed{\therefore \: y =2}} \\$

4 0

4 years ago

Can someone tell me what 2 to the power of 6 is

Ira Lisetskai [31]

${2}^{6} = 64 = 2 \times 2 \times 2 \times 2 \times 2 \times 2$

8 0

3 years ago

Read 2 more answers

Sumita buys a set of earphones for £12.17. She pays with £15. How much change does she get? Give your answer in £.

Flura [38]

She will get $8.01. Hope this helped.

3 0

3 years ago

The graph of a function in the form f(x) a(x - h)2 +k is shown. Use the graph to find an equation for f(x).

seropon [69]

O.K.

(h; k) are the coordinates of the vertex.

On the graph are (3; 4), therefore we have:

$f(x)=a(x-3)^2+4$

We have the x-intercept (1; 0) → x = 1; y = 0.
Substitute them in the equation:

$0=a(1-3)^2+4\\\\0=a(-2)^2+4\\\\4a+4=0\ \ \ |-4\\\\4a=-4\ \ \ \ |:4\\\\a=-1$

so. We have the answer:

$\boxed{f(x)=-(x-3)^2+4}$

8 0

3 years ago

A test is used to assess readiness for college. In a recent year, the mean test score was 21.2 and the standard deviation was4.

myrzilka [38]

Scores that are greater than 31 are significantly high.

Scores that are less than 11.4 are significantly low.

The test scores between 11.4 and 31 are not significantly low or significantly high.

<h3>How to Identify significance values?</h3>

We are given;

Standard deviation; s = 4.9

From the complete question, we are told to consider a value to be significantly low if its z score less than or equal to -2 or consider a value to be significantly high if its z score is greater than or equal to 2.

Thus;

2s = 2 * 4.9 = 9.8

Scores that are greater than 21.2 + 9.8 = 31 are significantly high.

Scores that are less than 21.2 - 9.8 = 11.4 are significantly low.

Thus, the test scores between 11.4 and 31 are not significantly low or significantly high.

Read more about significance values at; brainly.com/question/4621112

#SPJ1

6 0

2 years ago