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3 years ago

Evaluate 4a 5b when a = 2 and b = 3.1. a. 6.5 b. 16.1 c. 21.5 d. 7.5

Mathematics

1 answer:

S_A_V [24]3 years ago

6 0

4a?5b = 4*2 ?5*3,1 = 8 ?15,5

what sign is there between ?

hope this will help you

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In triangle PQR, PR = 23mm, QR = 39mm, and m<R = 163 degrees. Find the area of the triangle to the nearest tenth.

Schach [20]

Answer: 131.1287 square mm (approx)

Step-by-step explanation:

The area of a triangle,

$A=\frac{1}{2} \times s_1\times s_2\times sin \theta$

Where $s_1$ and $s_2$ are adjacent sides and $\theta$ is the include angle of these sides,

Here PR and QR are adjacent sides and ∠R is the included angle of these sides,

Thus, we can write,

$s_1 = PR= 23\text{ mm}$ , $s_2=QR=39\text{ mm}$ and $\theta = 163^{\circ}$ ,

Thus, the area of the triangle PQR,

$A=\frac{1}{2} \times 23\times 39\times sin163^{\circ}$

$A=\frac{262.257419136}{2} = 131.128709568\approx 131.1287\text{ square mm}$

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3 years ago

Find the volume of a cone that has a radius of 5 yards and a

stepan [7]

Answer:

Volume of the cone = $182.91\,yards^3$

Step-by-step explanation:

Radius of the cone = $5\,yards$

Height of the cone = $7\,yards$

Volume of a cone is:

$\pi \times r^2 \times\dfrac{h}{3}\\$

$=3.14\times (5\times 5)\times \dfrac{7}{3} \\\\=3.14\times 25 \times 2.33\\\\=3.14\times 58.25\\\\=182.905\,yards^3$

The Volume of the cone is : $182.91\,yards^3$

8 0

3 years ago

D-7<12;d=19 <br> solve for answer

Yuki888 [10]

Answer:

19 is the answer

Step-by-step explanation:

hope its correct

5 0

3 years ago

What is 20+4y - 2x = 0 in slope intercept form

artcher [175]

Hello there!

The slope intercept form is: $y=mx +b$

So...

We would have $y= \frac{1}{2} x-5$

I hope this helps!

5 0

4 years ago

Read 2 more answers

100/a = 25<br> i think its 2500 but I'm not sure

svetoff [14.1K]

Answer:

a=4

Step-by-step explanation:

100/a=25

100/25 =a

a=4

6 0

3 years ago