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3 years ago

A test is worth 140 points. Ten percent of those points are from one short-answer question. How many points is the short-

Mathematics

2 answers:

Assoli18 [71]3 years ago

5 0

Answer: b. 14

Step-by-step explanation:

quiz on edge 2020

A test is worth 140 points. Ten percent of those points are from one short-answer question. How many points is the short-answer question worth?

14 points :D

Mashutka [201]3 years ago

4 0

The answer is 14. Since 140 x .10 = 14.

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Find the x-intercepts of the parabola with vertex (7,-12) and y-intercept (0,135).

Ira Lisetskai [31]

Answer:

x=9 and x=5

(9,0) and (5,0)

Step-by-step explanation:

Use vertex form to solve for the unknown variable

$y=a(x-h)^2+k\\\\135=a(0-7)^2-12\\\\147=a(-7)^2\\\\147=49a\\\\3=a$

Use the new equation to find the x-intercepts

$y=3(x-7)^2-12\\\\0=3(x-7)^2-12\\\\12=3(x-7)^2\\\\4=(x-7)^2$

$2=x-7\\9=x$

$-2=x-7\\5=x$

Therefore, the x-intercepts of the parabola are (9,0) and (5,0). Feel free to review the attached graph for more information.

8 0

2 years ago

A right triangle, DEF, is shown below. What is sin FDE?

RoseWind [281]

Answer:

22.6°

Step-by-step explanation:

Reference angle = <FDE

Side opposite to <FDE = 5

Hypotenuse = 13

The trigonometric ratios to apply is:

$sin(\theta) = \frac{opp}{hyp}$

Plug in the values

$sin(\angle FDE) = \frac{5}{13}$

$sin(\angle FDE) = 0.3846$

$\angle FDE = sin^{-1}(0.3846)$

$\angle FDE = 22.6$ (nearest tenth)

3 0

3 years ago

What is 13.7 billion years in scientific notation

Vikki [24]

Answer:

1.37 * 10^10 years.

Step-by-step explanation:

Billion = 9 zeroes

13.7 billion = 13.7 * 10^9 = 1.37 * 10^10.

4 0

3 years ago

3<-5n+2n can anyone help me

saw5 [17]

Answer:

The answer is 21

Step-by-step explanation:

Firat add 5 and 2. Then you multiply the answer of 5+2 and 3.

5 0

2 years ago

Rewrite using standard notation : 8.07 x 10^3

sammy [17]

8070, because when it is a positive exponent you have to move the exponent to the right. When it is a negative exponent, you would move it to the left. Hope this helps :)

4 0

2 years ago