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3 years ago

Hi help me with this too pls I can't pls

Mathematics

1 answer:

Musya8 [376]3 years ago

4 0

Answer:

1) 3(9) +15

2) 2(-5)^2 - 11

3) (-2)^3 + 13(-2)

4) 4(6)^2 -7

5) (-9)^2 - (-9) + 10

All you have to do solve

Step-by-step explanation:

Replace the x with whatever number is in the f(number)

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A farmer plowed a rectangular section of land for a new crop. The section measures 24 1/2 yd by 38 1/2 yd. Find the total area i

MAVERICK [17]

Answer: $943\dfrac{1}{4}\text{ sq. yds}$

Step-by-step explanation:

Given , A farmer plowed a rectangular section of land for a new crop.

Dimensions of the section is given by :-

Length by width = $24\dfrac{1}{2}\text{ yd by }38\dfrac{1}{2}\text{ yd}$

Since , the area of a rectangle = length x width

Then, the total area in yards of plowed section of land will be:

$24\dfrac{1}{2}\times38\dfrac{1}{2}\text{ sq. yds}\\\\=\dfrac{2(24)+1}{2}\times\dfrac{2(38)+1}{2}\text{ sq. yds}\\\\=\dfrac{49}{2}\times\dfrac{77}{2}\text{ sq. yds}\\\\=\dfrac{3773}{4}\text{ sq. yds}\\\\=943\dfrac{1}{4}\text{ sq. yds}$

Hence, the total area in yards of plowed section of land = $943\dfrac{1}{4}\text{ sq. yds}$

8 0

3 years ago

Using triangle inequality to determine possible lengths of a third side. Can someone help me please?

kotykmax [81]

Answer:

hypotenuse = aprox 18.6

Step-by-step explanation:

a^2 + b^2 = c^2

11^2 + 15^2 = c^2

346 = c^2

square root both sides

c = aprox 18.6

hope that helped!

8 0

3 years ago

I need help with my math homework it is algebra

Ivahew [28]

What are the math problems?

6 0

3 years ago

Standard deviation 12,16,22,23,34,44,46,47,48,64,67,73,83,89, round to nearest tenth

RideAnS [48]

Answer: 23.9

Step-by-step explanation:

1. First, you must calculate the mean, as following:

$\frac{12+16+22+23+34+44+46+47+48+64+67+73+83+89}{14}=47.71$

2. Now, you should substract the means obtained to every single number of the set and then square it. Add all of them:

$(12-47.71)^{2}+(16-47.71)^{2}+(22-47.71)^{2}+(23-47.71)^{2}+(34-47.71)^{2}+(44-47.71)^{2}+(46-47.71)^{2}+(47-47.71)^{2}+(48-47.71)^{2}+(64-47.71)^{2}+(67-47.71)^{2}+(73-47.71)^{2}+(83-47.71)^{2}+(89-47.71)^{2}=7984.86$