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2 years ago

I’m giving brainliest to whoever answers correct!

Mathematics

1 answer:

olya-2409 [2.1K]2 years ago

4 0

Answer:

I would say 8.

Step-by-step explanation:

Using the Pythagorean Theorem, a2+b2=c2.

7^2+5^2=c^2

49+25=74

Now find the square roots of all numbers...

7+5= about 8.

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Do both of them for 50 points

erastovalidia [21]

Answer:

1) 5.44, 2) 3.9

Step-by-step explanation:

1) a/b + 2b - a^2 when a = 1.4 and b = 0.2

plug in the values:

1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44

2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)

again, plug in the values:

2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9

5 0

2 years ago

CAn you pls help me on this one ?

Alex17521 [72]

C is the corret answer

5 0

2 years ago

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This questionn please

nasty-shy [4]

Let X be the total number of guests
$\frac{1}{3} x + \frac{5x}{12} + 23 \\ \frac{12x + 15x + 828}{36} \\ \frac{17x + 828}{36}$
when X =1
(17+828)/36
845/36=23.5
am sorry but the question is not that clear
pls mark as brainliest

8 0

2 years ago

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f

Amanda [17]

Answer:

$\bf x_1 = 2\\x_2 = 4\\x_3=6\\x_4=8$

Step-by-step explanation:

The given interval : x = 0 to x = 10

Length of interval = 10 - 0

= 10

$\text{Now, each }x_i \text{ is midpoint and endpoint of the five equal intervals}$

⇒ Number of equal intervals = 5

$\textbf{Length of each interval = }\frac{10}{5}$

$\textbf{Therefore, }\bf x_1 = 0 + 2 = 2\\x_2 = 2 +2 =4\\x_3=4+2=6\\x_4=6+2=8$

3 0

2 years ago

Add.<br><br> Express your answer in simplest form. <br><br> 5 tenths + 3 tenths = ?

mr Goodwill [35]

0.5

+0.3
---------
0.8
The answer is 8 tenths

7 0

2 years ago

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