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3 years ago

10 121518Are my choices

Mathematics

2 answers:

Crazy boy [7]3 years ago

6 0

Answer:

y=10 x=30

Step-by-step explanation:

3x=90

x=30

2(30)+3y=90

60+3y=90

3y=30

y=10

omeli [17]3 years ago

3 0

Answer:

y= 10

Step-by-step explanation:

we have to find x first

∠ABD= 90° because its a right angle

3x°=90°

divide by on both sides

x= 30°

∠CBD must equal 90° degrees as well because a line is 180°

60+3y= 90

-60

3y=30

y= 10

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JulijaS [17]

Answer:

The correct answer is C.

Step-by-step explanation:

In the equation of a circle, if the variable $x$ and $y$ are added or subtracted by any number before being squared, the entire circle with be translated in the opposite amount that was added or subtracted to the circle. For example, $(x-8)^2 + (y-8)^2$ shifts the center 8 to the right and up of the origin, $(x+1)^2+(y+4)^2$ shifts the center 1 to the left and 4 down of the origin. Since the circle represented in the graph is centered directly on the origin, that means the equation will have $x^2+y^2$ , which helps you eliminate choices A and C. For the equation of a circle, the radius is the value of the constant on the right side of the equal sign taken to its square root. Since the radius of this circle is 8, that means the constant at the right side of the circle would be 64 or $8^2$ , so the correct answer would be choice C: $x^2+y^2=8^2$ .

5 0

3 years ago

Describe the end behavior of the following function:

Furkat [3]

Answer:

C. The graph of the function starts high and ends low

Step-by-step explanation:

For $f(x)=-x^5+x^2-x$ , as $x$ approaches negative infinity, $f(x)$ approaches infinity, and as $x$ approaches infinity, $f(x)$ approaches negative infinity.

Thus, we have:

$\lim_{x\rightarrow -\infty}f(x)=\infty,\\\lim_{x\rightarrow \infty}f(x)=-\infty$

This corresponds with answer choice C. The graph of the function starts high and ends low.

7 0

3 years ago

What is the missing number 7.3 ------ 8.1 8.5 8.9

olga2289 [7]

7.3 ------ 8.1 8.5 8.9

let us try to find the common difference here using last three terms

8.5-8.1=0.4

8.9-8.5=0.4

so it is clear that common difference is 0.4

so adding 0.4 to 7.3 will give the next term

7.3+0.4=7.7

Answer : missing number is 7.7

5 0

4 years ago

Which of the following equations must be true? A k +5 (3 – 1) = 15+ k B) 3+ 7k 21+ 3k C) 5 2k = 3K © 5 D) 5 (7 + k) = 35 + 5k

Lina20 [59]

Answer:

D is the correct answer

im sure

7 0

3 years ago

Rewrite without parentheses and simplify. (u+3)^2

blsea [12.9K]

Answer:

u^2 + 9

Step-by-step explanation:

you would have to put the exponent on the u and 3

so it would by u^2 + 3^2

but simplified it would be

u^2 + 9

we cannot simplify further since we don't know what u equals

5 0

3 years ago

10 121518Are my choices​

10 121518Are my choices