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3 years ago

Translate this word phrase into a variable expression. 25 decreased by the sum of 6 and a number

Mathematics

2 answers:

Elena-2011 [213]3 years ago

6 0

6x-25 six and a number(x) decreased by 25

zimovet [89]3 years ago

6 0

Easy,

just go slowly

25 decreased

25-

by the SUM of 6 and a number

(6+x)

25-(6+x)

This is your equation. 25-(6+x)

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Jamal bought 4 pounds of blueberries for $12. Which of the following proportions could be used to help him figure out how much 2

faltersainse [42]

Answer:

$\$6$

Step-by-step explanation:

we know that

Using proportion

$\frac{12}{4}\frac{dollars}{pounds} =\frac{x}{2}\frac{dollars}{pounds}\\ \\ x=12*2/4\\ \\x=\$6$

4 0

2 years ago

a shopping channel shipped 467,023 packaged last year what is a reasonable estimate of the number of packages shipped explain

WITCHER [35]

467,000 because if you round higher to 468,000 it would be to far from the original number and 467,000 is closer.

Hope that made sence!

8 0

3 years ago

Sabena invests $250 in an account that earns 2.4% interest per year compounded continuously. How many years will it take the acc

g100num [7]

Answer:

It'll take 7.5967 years to have $300 on that account.

Step-by-step explanation:

This problem involves a compounded interest compounded continuously, so in order to solve it we must use the formula for those cases as shown below:

M = C*e^(i*t)

Where M is the final value, C is the initial capital, i is the interest rate and t is the total time. We have:

300 = 250*e^(0.024*t)

e^(0.024*t) = 300/250

e^(0.024*t) = 1.2

0.024*t = ln(1.2)

t = ln(1.2)/0.024 = 7.5967

It'll take 7.5967 years to have $300 on that account.

6 0

2 years ago

After sitting in a refrigerator for a while, a turkey at a temperature of 34 degrees F is placed on the counter and slowly warms

Anton [14]

Answer:

k = 0.006
T = 48 °F

Step-by-step explanation:

The initial temperature difference of 72 -34 = 38 °F is reduced to a difference of 72 -41 = 31 °F after 35 minutes. The exponential term in the temperature expression could have the factor ...

(31/38)^(t/35) = e^(-kt)

Taking the natural log, we find ...

(t/35)ln(31/38) = -kt

k = ln(38/31)/35 ≈ 0.00581711

To the nearest thousandth, this is ...

k ≈ 0.006

Using this in the equation for temperature, we have ...

T = 72 -38e^(-0.006t)

Filling in the desired value for t (80), we find the turkey temperature after 80 minutes to be about

T = 72 -38e^(-.006×80) = 72 -38e^-.48 ≈ 48.49

T ≈ 48 °F

The value of k is about 0.006, and the turkey temperature is about 48 °F.

4 0

2 years ago

A 250 mL beaker can hold 0.192 kg of acetone. What is the density of this substance, in g/mL? Round your answer to 3 significant

Andreyy89

Density = m/v with mass being in grams and volume in mL......
192 grams/250 mL = 0.768 g/mL

3 0

3 years ago