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3 years ago

PLEASE HELP ME RUNNING OUT OF TIME!!!

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

8 0

Answer:

I am not sure of the answer but it is between A and C but my final answer is gonna be C.

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Will give brainliest

Soloha48 [4]

The first slope going up is when the function increases. when the line goes in a straight line it’s constant. abs when the slope goes down it’s decreasing. so in the photo it first increases, stays constant, decreases, stays constant, decreases

4 0

3 years ago

Read 2 more answers

What is the value of x? A. 25° B. 50° C. 55° D. 75° E. 80°

Troyanec [42]

Answer:

<h2>Option B</h2><h2>x = 50° </h2>

Step-by-step explanation:

By the condition, 

25° + 105° + x = 180° [Angle sum property of triangle]

=> 130 + x = 180

=> x = 180 - 130

=> x = 50° (Ans)

6 0

3 years ago

Read 2 more answers

the perimeter of the circular base of a cone is 132 cm and its vertical height is 28 cm find the curved surface area total surfa

Elden [556K]

Answer:

i. Curved surface area = 2310 $cm^{2}$

ii. Total surface area = 3696 $cm^{2}$

iii. volume = 12936 $cm^{3}$

Step-by-step explanation:

Perimeter of the circular base = circumference of the circle = 132 cm

circumference of a circle = 2 $\pi$ r

132 = 2 $\pi$ r

r = $\frac{132}{2\pi }$

= $\frac{66}{\pi }$

r = 66 x $\frac{7}{22}$

= 3 x 7

= 21

radius = 21 cm

vertical height, h = 28 cm

Thus applying the Pythagoras theorem,

$l^{2}$ = $h^{2}$ + $r^{2}$

= $28^{2}$ + $21^{2}$

= 784 + 441

= 1225

l = $\sqrt{1225}$

l = 35 cm

The slant height is 35 cm.

i. Curved surface area = $\pi$ rl

= $\frac{22}{7}$ x 21 x 35

= 22 x 3 x 35

= 2310

curved surface area of the cone is 2310 $cm^{2}$ .

ii. Total surface area = $\pi r^{2}$ + $\pi$ rl

= $\pi$ r(r + l)

= $\frac{22}{7}$ x 21 (21 + 35)

= 22 x 3 x 56

= 3696

The total surface area of the cone is 3696 $cm^{2}$ .

iii. volume of a cone = $\frac{1}{3}$ $\pi r^{2}$ h

= $\frac{1}{3}$ x $\frac{22}{7}$ x $21^{2}$ x 28

= 12936

The volume of the cone is 12936 $cm^{3}$

5 0

3 years ago

State whether the following statement is true or false, and explain why. If the statement is false, state the true change. A h

katovenus [111]

Answer:

False

Step-by-step explanation:

Given that a high school reports that its students' SAT scores were down by 12% in one year. The next year, however, the test scores rose by 20%.

Let score initially be 100

Down by 12

Next year score 88

For succeedingyear

increase is 20% = $20% of 88=17.6\\$

Score in the 2nd year = $88+17.6 = 105.6$

Hence overall scores improvement is 5.6% and not 8%

5 0

3 years ago

Select the correct aver from each drop-down menu

kow [346]

Answer:

Step-by-step explanation:

4 0

2 years ago