Why are the soulution to the proportions 50/x = 10/20 and 10/50= 20/x

Mathematics

1 answer:

Marianna [84]3 years ago

4 0

Answer:

Step-by-step explanation:

You should croos multiply to get 10x = 50 (20) which is 10x = 1000 then divide each side by 10. What do you get for x?

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5 STARS ON YOUR AND ANSWER AND A THANK YOU.

olga nikolaevna [1]

Answer:

It's the fourth answer, D.

6 0

2 years ago

Read 2 more answers

The Earth's circumference measured at the equator is approximately 1.3148 × 108 feet. What is the number written in standard for

maks197457 [2]

Answer:

The number written in standard form is $131,480,000$

Step-by-step explanation:

we have

$1.3148*10^8$

we know that

$10^8=100,000,000$

substitute

$1.3148*10^8=1.3148(100,000,000)$

Remember that

When multiplying decimals by 10, move the decimal point one space to the right

In this case move the decimal point eight spaces to the right

$1.3148(100,000,000)=131,480,000$

therefore

The number written in standard form is $131,480,000$

4 0

3 years ago

Evaluate the surface integral. S xz ds, s is the part of the plane 2x 2y z = 4 that lies in the first octant

maksim [4K]

The value of the given surface integral is 4.

The given plane intercepts the coordinate axes at (2, 0, 0), (0, 2, 0), and (4, 0, 0). These point are the coordinates of a triangular region that we can parameterize using.

$S(u,v)=(1-u)((1-u)(2,0,0)+u(0,2,0)+u(4,0,0)\\S(u,v)=(2(1-u)(1-v),2u(1-v),4v)$

<h3>What is the surface integral?</h3>

A surface integral is a generalization of multiple integrals to integration over surfaces. It can be thought of as the double integral analog of the line integral. Given a surface, one may integrate a scalar field over the surface or a vector field.

with 0≤u≤1 and 0≤v≤1. Then the surface element ds is equivalent to

$ds=\||\:\left(s_u\times \:\:S_v\right)||dudv=12\left(1-v\right)dudv$