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1 year ago

52 companies; 25% increase

2 answers:

3 0

Find 25% of 52 first:

0.25 * 52 = 13

Now add this to the original amount:

52 + 13 = 65

So there are 65 companies after the increase.

emmasim [6.3K]1 year ago

3 0

Find 25% of 52, which would be multiplying 0.25 x 52, which gives us 13. We add 13 to 52 to get our final answer, which is 65. :)

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Anyone know the answer??

olga_2 [115]

No. no i do not so yeah.

5 0

1 year ago

Suppose you have 20 coins that total $3.00. Some coins are nickels and some are quarters. Which of the following pairs of equati

kap26 [50]

Answer:

Step-by-step explanation:

n + q = 20

.05n + .25q = 3.00

5n + 25q = 300

n + q = 20

5n + 25q = 300

-5n - 5q = -100

20q = 200

q = 10 quarters

n + 10 = 20

n = 10 nickels

(10 nickels, 10 quarters)

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1 year ago

If HJ= 7x-27 . Find the value of x

Alinara [238K]

we are given

$HJ=7x-27$

Since, we have to solve for x

so, we will isolate x on anyone side

step-1: Add both sides 27

$HJ+27=7x-27+27$

$HJ+27=7x$

step-2: Divide both sides by 7

$HJ+27=7x$

$\frac{HJ+27}{7}= \frac{7x}{7}$

now, we can simplify it

$\frac{HJ+27}{7}= x$

$x=\frac{HJ+27}{7}$ ................Answer

7 0

2 years ago

Read 2 more answers

A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of

navik [9.2K]

Answer:

A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of healthy volunteers. For example, a phase I test of a specific drug involved only 7 subjects.

Step-by-step explanation:

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1 year ago

A welder drops a piece of red-hot steel on the floor. The initial temperature of the steel is 2,500 degrees Fahrenheit. The ambi

sergey [27]

Answer: After 18.05 minutes, the temperature of steel becomes 100 degrees.

Step-by-step explanation:

Since we have given that

Initial temperature = 2500

At t = 0,

we get that

$f(t)=Ce^{-kt}+80\\\\2500=C+80\\\\2500-80=C\\\\2420=C$

After 2 minutes, the temperature of the steel is 1500 degrees.

so, it becomes,

$1500=2420e^{-2k}+80\\\\1500-80=2420e^{-2k}\\\\\dfrac{1420}{2420}=e^{-2k}\\\\0.587=e^{-2k}\\\\\ln 0.587=-2k\\\\-0.533=-2k\\\\k=\dfrac{0.533}{2}\\\\k=0.266$

So, We need to find the number of minutes when the temperature of steel would be 100 degrees.

So, it becomes,

$100=2420e^{-0.266t}+80\\\\100-80=2420e^{-0.266t}\\\\20=2420e^{-0.266t}\\\\\dfrac{20}{2420}=e^{-0.266t}\\\\\ln \dfrac{20}{2420}=-0.266t\\\\-4.8=-0.266t\\\\t=\dfrac{4.8}{0.266}\\\\t=18.05$

Hence, after 18.05 minutes, the temperature of steel becomes 100 degrees.

7 0

1 year ago