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3 years ago

BRAINLIESTTT ASAP! PLEASE HELP ME :)

Mathematics

1 answer:

Sav [38]3 years ago

7 0

Answer: 18/5 hours, or 3.6 hours

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Work Shown:

x = amount of time it takes Blake to do the job by himself

y = amount of time it takes Ned to do the job by himself

z = time it takes if they worked together

In this case,

x = 9 and y = 6

Use those values to find z.

$\frac{1}{x}+\frac{1}{y} = \frac{1}{z}\\\\\frac{1}{9}+\frac{1}{6} = \frac{1}{z}\\\\\frac{2}{18}+\frac{3}{18} = \frac{1}{z}\\\\\frac{2+3}{18} = \frac{1}{z}\\\\\frac{5}{18} = \frac{1}{z}\\\\5z = 18\\\\z = \frac{18}{5}\\\\z = 3.6\\\\$

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Im so lost im in algebra 1 and i feel so slow

Andrei [34K]

Answer:

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Step-by-step explanation:

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3 years ago

Homework Help ASAP

Vlad [161]

Answer:

3/4 gallon of purple paint left

Step-by-step explanation:

3/8 + 5/8 =8/8

he uses 2/8 so

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3/4 (simplified)

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3 years ago

Harry took out a loan from the bank. the variable ddd models harry's remaining debt (in dollars) ttt months after he took out th

vaieri [72.5K]

Answer:

Harry has a loan of $9000 in total. Harry obtained a loan from the bank. Explanation Harry's remaining debt, expressed in dollars, is modeled as a function of time t, expressed in months, by the function D(t). The role is played by, This function can be used to determine that $200 is being subtracted each month from the function, meaning Harry is paying $200 toward his loan. Harry has not yet made any payments, therefore we may set t=0 to obtain the total amount of his solo. Therefore, the value of D(t) will reveal the loan's net amount. Harry's borrowing, therefore, equals to $9000.

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2 years ago

R of breaths of all people in asia in 2016? Expressing your answer in scinentific notation in the form a *10^(b) what are the va

Andrew [12]

Answer:

$a = 3.7464$

$b = 16$

Step-by-step explanation:

Given

See attachment for complete question

Required

Express the answer in $a * 10^b$

From the question, we have:

$People = 4.46 * 10^9$

$Breath = 8.4 * 10^6$ breath/person in a year

The number of breath is calculated by:

$Overall = People * Breath$

So, we have:

$Overall = 4.46 * 10^9 * 8.4 * 10^6$

Reorder

$Overall = 4.46 * 8.4* 10^9 * 10^6$

$Overall = 37.464* 10^{9+6}$

$Overall = 37.464* 10^{15}$

Using scientific notation $a * 10^b$ ;

The value (a) must be in the following interval $0 \le a \le 1$

So, we have:

$Overall = 3.7464 * 10 * 10^{15$

$Overall = 3.7464 * 10^{16$

By comparing the above with: $a * 10^b$

$a = 3.7464$

$b = 16$

7 0

3 years ago

Find the error 3(x+2) + 3x = 36 3x + 6 + 3x = 36 6x + 6 = 36 6x = 42 x = 7

rusak2 [61]

Answer: 6x=42

Explanation: After the step 6x+6=36, it’ll equal 6x=30 because when you subtract the 6 on both sides, it’ll equal 30, revealing it’s actually 6x=30, with the conclusion of x=5.

3 0

3 years ago