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3 years ago

In ΔABC, ∠A is a right angle. What is the value of y?

Mathematics

2 answers:

Anna71 [15]3 years ago

6 0

check the picture below.

Tems11 [23]3 years ago

5 0

Answer:

Step-by-step explanation:

You need to use sin for this; sin = opposite/hypotenuse

You have the hypotenuse(7) but you want to find the opposite side length(y).

Thus you will have sin(30) = y/7

You then multiply 7 on both sides to cancel out the division and get it on the other side.

7*sin(30) = (y/7) *7

Result: 7sin(pi/6)

** If you are wondering where the sin(30) went it is that sin(30) and sin(pi/6) are the same thing.

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What is y x 6 for y = 2/3?

ycow [4]

If y = 2/3 , we simply plug it in the equation.

2/3 x 6 =

Convert 6 into a fraction.
6/1

2/3 x 6/1 = 12/3 = 4

Answer: 4

3 0

3 years ago

Read 2 more answers

Which describes the function over the interval given in the table?

Montano1993 [528]

Answer:

The Answer is D.

Step-by-step explanation:

To solve this question we should use the process of elimination.

We can clearly see that the function f(x) increases as x increases so we can rule out options A and C.

Now we have to decide between B and D.

So the format for a quadratic function is $f(x)=ax^2+bx+c$

The format for an exponential function is $f(x)=a*b^x$

So let's try exponential first:

at x = 0 we solve for a and b:

$10000 = a*b^0\\10000=a$

so we find b when x =5

$12201.9 =10000b^5\\b^5=\frac{12201.9}{10000} \\b^5=1.22019\\b=\sqrt[5]{1.22019} \\$

b = 1.04060

Then we evaluate the value as x=10

$14888.64=10000b^10\\b^10=14888.64/10000\\b^10=1.488864\\b=\sqrt[10]{1.488864} \\b=1.04060$

As can be seen from both cases b is the same. This is a key chareteristic of an exponential function. So the Answer is D.

6 0

3 years ago

a polynomial has one quadratic factor and 3 linear factors. One of the linear factors has multiplicity two. What is the degree o

snow_lady [41]

Answer:

Step-by-step explanation:

a polynomial has one quadratic factor and 3 linear factors. One of the linear factors has multiplicity two. What is the degree of the polynomial

A polynomial with one quadratic obtains the forms ( ax² +bx +c ) with 3 linear factors.

Suppose the three linear fractions are :

(x- P) (x-Q) (x- R)

∴

The polynomial = ( ax² +bx +c )(x- P) (x-Q) (x- R)

By factorization, the highest degree of the polynomial = 5

8 0

3 years ago

What is the y-intercept of the line?

cestrela7 [59]

Answer

-41

Step-by-step explanation:

When X =0 Y=-41

First column you are adding 9

-27+9=-18

-18+9=-9

-9+9=0

Second column you are adding 19

-98+19=-79.

-79+19=-60

-60+19/-41

So when X=0 Y=-41

7 0

3 years ago

I will give brainliest<br>Help me

r-ruslan [8.4K]

Answer:

See Explanation

Step-by-step explanation:

$\frac{mass \: of \: earth}{mass \: of \: human} = \frac{5.97 \times {10}^{24} }{6.35 \times {10}^{1} } \\ \\ = 0.94015748 \times {10}^{24 - 1} \\ \\ = 0.94015748 \times {10}^{23} \\ \\ = 9.4\times {10}^{22} \\ \\ \therefore \: mass \: of \: earth \\ =( 9.4\times {10}^{22} ) \times mass \: of \: human$

6 0

3 years ago