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3 years ago

Solve the following problem. 9/5−4/3=

Mathematics

1 answer:

Katarina [22]3 years ago

4 0

Answer = 7/15

<h2><em>Please Mark Brainliest Ty!<3</em></h2><h2><em /></h2><h2><em /></h2><h2><em /></h2><h3><em>Also some advice. If you need help with any math problem I 100% advise you to use the website called "Symbolab" It has steps when answering your question so you can better understand <3</em></h3>

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Find an equation of the sphere through the point (4,3,-1) and has center (3,8,1).

sleet_krkn [62]

Answer:

$(x - 3)^{2} + (y - 8)^{2} + (z - 1)^{2} = 30$

Step-by-step explanation:

The general equation of a sphere is as follows:

$(x - x_{c})^{2} + (y - y_{c})^{2} + (z - z_{c})^{2} = r^{2}$

In which the center is $(x_{c}, y_{c}, z_{c}$ , and r is the radius.

In this problem, we have that:

$x_{c} = 3, y_{c} = 8, z_{c} = 1$

$(x - 3)^{2} + (y - 8)^{2} + (z - 1)^{2} = r^{2}$

through the point (4,3,-1)

This leads us to find the radius.

$(4 - 3)^{2} + (3 - 8)^{2} + (-1 - 1)^{2} = r^{2}$

$r^{2} = 1 + 25 + 4$

$r^{2} = 30$

So the equation of the sphere is:

$(x - 3)^{2} + (y - 8)^{2} + (z - 1)^{2} = 30$

6 0

2 years ago

7 out of 10 doctors If there are 4200 doctors that prefer Cough-Up brand syrup, how many total doctors are there? * A)6000 B)294

RoseWind [281]

Answer: a) 6000

reason:

if 7 out of 10 doctors prefer cough up syrup, then that means 4200 is 7/10ths of the doctors
divide 4200 by 7 to get 600
then, multiply 600 by 10 to get 6000, the total number of doctors

4 0

3 years ago

Which of the following expressions could represent the total amount withdrawn from Brandon’s checking account during the time pe

den301095 [7]

The Solution:

Given:

Each withdrawal by Brandon = $x

ATM charge per transaction = $2

Required:

To find an expression for Brandon's total withdrawal if he withdraws the same amount once a week for 7 weeks.

Step 1:

We shall find the total amount of each withdrawal, that is, the sum of the amount withdrawn and the ATM charge for the transaction.

$\text{ Each withdrawal=x+2=\$(x+2)}$

Step 2:

Finding the required total amount, we have:

$\text{ Total amount withdrawn=7(x+2)=\$7(x+2)}$ $\begin{gathered} 7(x+2) \\ or \\ 7x+14 \\ \text{ or} \\ 7\mleft(x\mright)+7\mleft(2\mright) \end{gathered}$

Therefore, the correct answers are: [options 2, 3, and 4]

6 0

1 year ago

Pls help I’ll brainlest

asambeis [7]

Answer:

30.5 feet / minute

Step-by-step explanation:

Rate of descent is the same as speed (of falling). The formula for speed is distance / time = speed

First, find how much it fell.

4595 - 3131 = 1464 feet

Divide the distance by the time.

1464 feet / 48 minutes = 30.5 feet / minute

6 0

2 years ago

From end zone to end zone, a football field is 120 yards long. How long is the

timofeeve [1]

Answer:

120x3 = 360

Step-by-step explanation:

4 0

2 years ago