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lisov135 [29]
3 years ago
13

Describe and correct the error in solving each of the equations.

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

left side: 3x *- (-2x) =8+7 right side: 2v -10 = -3v *-5

Step-by-step explanation:

on the left side you add 2x to move it from the right to the left. on the right side you multiply negative with positive which is negative

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If log(16)=s, what is the value of 2/3 log(6400) - 1/3 log(1600) in terms of s?
eduard

The value of   \dfrac{ 2}{3} log(6400) - \dfrac{1}{3} log(1600)  in terms of s will be

\dfrac{2}{3}(400s)-\dfrac{1}{3}(1000s)

<h3>What is Logrithm?</h3>

A quantity representing the power to which a fixed number (the base) must be raised to produce a given number.

Here we have the expression:-

\dfrac{ 2}{3} log(6400) - \dfrac{1}{3} log(1600)

So in terms of s the expression will become:-

\dfrac{2}{3}(400s)-\dfrac{1}{3}(1000s)

To know more about logarithm follow

brainly.com/question/25710806

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8 0
2 years ago
A person wishes to mix coffee worth ​$9 per lb with coffee worth ​$3 per lbto get 240 lbsof a mixture worth $5 per lbHow many po
Nimfa-mama [501]
In order to get $5 per pound, you need a ratio of 1:2. One $9 for every two $3 will get you $5 per pound, since 9 + 3 + 3 is 15, divided by 3 pounds is $5. For 240 pounds, divide by three (since there is one $9 and two $3). This is 80 times the 3 pounds at $5.
Therefore, 1 × 80 is 80 pounds of $9 coffee, and 2 × 80 is 160 pounds if $3 coffee. which totals 240 pounds at $5 per pound.
8 0
3 years ago
The cost of a service call to fix a washing machine can be expressed by the linear function y = 45 x + 35, where y represents th
katovenus [111]

Answer:

the slope represents the cost for each hour it takes to repair the machine.Step-by-step Answer:

We are given that  the cost of a service call to fix  a washing machine can be expressed by the linear function

Where

y=Total cost of  a service to fix  the machine.

x=Number of hours takes to fix the machine

We have to find that slope in this function what represents.

General equation of line is given by

Where m=Slope of line

c=y- intercept

Comparing the general equation with the given function

We get m=45,c=35

m=45 represents the cost for each hour it takes to repair the machine because when number of hours multiplied by 45 then we get total cost of x hours.

Hence, the slope represents the cost for each hour it takes to repair the machine.

8 0
3 years ago
Read 2 more answers
Over the last three evenings, Debra received a total of 110 phone calls at the call center. The second evening, she received 4 t
Elza [17]

Answer:

See below.

Step-by-step explanation:

Total = 110

Let calls on third evening = x

second evening = 4x

first evening = x + 8

=> x + 4x + x + 8 = 110

=> 6x = 102

=> x = 17

First evening = x = 17 calls

Second evening = 4x = 68 calls

Third evening = x + 8 = 25 calls

4 0
2 years ago
Factor.<br> x^2+25<br><br> (x+5) (x-5) <br> (x+5) (x+5)<br> (x+5i) (x-5i)<br> (x+5i) (x+5i)
icang [17]

Answer:

( x + 5 i ) ( x − 5 i )

Step-by-step explanation:

Multiply the constant by  − i ^2  and factor.

4 0
3 years ago
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