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3 years ago

Hi! Can someone please help me?

Mathematics

1 answer:

Brrunno [24]3 years ago

8 0

Answer:

30 hrs

Step-by-step explanation:

In 1 hour, J completes 1/55 of job

In that time, D completes 1/66 of job

J + D together complete 1/55 + 1/66 of the job in 1 hour

1/55 + 1/66 = 1/30

Together, it takes them 30 hours to build the wall.

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Helpppppp its a test

Elan Coil [88]

Answer:

y=x^2 is not a linear function

Step-by-step explanation:

8 0

3 years ago

4x+y=10 what is the missing value

Mandarinka [93]

Answer:

Step-by-step explanation:

if x = 0 ,y =10

4×0+10

=10

if x = 1, y = 6

=4×1 + 6

=4 +6

=10

if x = 2, y = 2

=4×2 +2

=8 + 2

=10

u can substitute any value for x and y ...i have only used positive values here

3 0

3 years ago

If f(x)=4x+3 and g(x)=x^2-3 then f(g(2))

grandymaker [24]

Answer:

Step-by-step explanation:

<u>The Composite Function</u>

Given f(x) and g(x) as real functions, the composite function $(f\circ g)(x)$ is defined as:

$(f\circ g)(x)=f(g(x))$

It can be found by substituting g into f.

The given functions are:

$f(x)=4x+3$

$g(x)=x^2-3$

It's required to find f( g( 2 ) )

Find g(2):

$g(2)=2^2-3$

Operating:

$g(2)=4-3 =1$

g(2)=1

Now find f(1):

$f(1)=4(1)+3$

$f(1)=4+3 =7$

Thus:

f( g( 2 ) )=7

4 0

3 years ago

Simplify (2√5+3√7)squared

belka [17]

Ok....
Simplified would be 12.40
Squared would be 153.99 or fraction form would be 83 + 12 $\sqrt{35}$

H0P3 It H3LPS :)

6 0

3 years ago

How many minutes are there in 4 hours and half

inn [45]

<h3>Answer:</h3>

270 minutes

<h3>Step-by-step explanation:</h3>

(60 minutes/hour) × (4.5 hours) = 270 minutes

5 0

4 years ago