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4 years ago

What is the solution of this equation -4z = 24

Mathematics

1 answer:

inn [45]4 years ago

3 0

Answer:

z = -6

Step-by-step explanation:

$-4z=24\\\\\frac{-4z=24}{-4}\\\\ \boxed{z=-6}$

Hope this helps.

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What is the exact value of tan(pi/4)?

tatyana61 [14]

The exact value of tan(π4) tan ( π 4 ) is 1 .

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3 years ago

Machine A can complete a certain job in x hours. Machine B can complete the same job in y hours. If A and B work together at the

scZoUnD [109]

Answer:

$\frac{y}{x+y}$

Step-by-step explanation:

The required answer is the rate at which Machine A works when the two machines are combined.

Note: the rate of doing work is express as

$rate=\frac{1}{time taken} \\$

Hence we can conclude that Machine A working rate is

$machine A=\frac{1}{x} \\$ and machine B working rate is

$machine B=\frac{1}{y} \\$

When the two machine works together, the effective working rate is

$\frac{1}{x}+\frac{1}{y}\\\frac{xy}{x+y}\\$

The fraction of the work that Machine B will not have complete because of Machine A help is the total work done by machine A

Hence the fraction of work done by A is expressed as

$\frac{1}{x}*combine working rate$

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Hence the fraction of the work that Machine B will not have complete because of Machine A help is the total work done by machine A is $\frac{y}{x+y} \\$

6 0

3 years ago

Anna has a recipe for pumpkin bars. She uses 2 ½ cups of sugar for every 3 pans of pumpkin bars. AJ wants to follow the same rec

Kisachek [45]

Answer:

$2.5h = 3g$

Step-by-step explanation:

Given

$Sugar = 2\frac{1}{2}\ cups$

$Bars = 3\ pans$

Required

Determine the equation for h pans and g cups

We have that:

$Sugar = g$

$Bars = h$

To do this, we make use of the following equivalent ratios.

$Bars : Sugar = Bars : Sugar$

So, we have:

$3 : 2\frac{1}{2} = h : g$

Express fraction as decimal

$3 : 2.5 = h : g$

Express as fraction

$\frac{3}{2.5} = \frac{h}{g}$

Cross multiply

$2.5h = 3g$

No options were given. So, I will stop here

8 0

3 years ago

What is 4x+3 = 5x :))

Butoxors [25]

Answer:

x = 3

Step-by-step explanation:

4x + 3 = 5x

4x = 5x - 3

4x - 5x = -3

(4 - 5)x = 1x

-1x = -3

x = -1 × (-3)

x = 3

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3 years ago

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Hi pls answer. it’s being timed

lbvjy [14]

Step-by-step explanation:

option a and option d ,

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3 years ago

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