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3 years ago

What expression can be written as 5 x (2+7)

Mathematics

1 answer:

Marina86 [1]3 years ago

7 0

Here’s your answer
(5x2)+(5x7)

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Solve, using linear combination. <br> 5x + y = 2 <br> 4x + y = 4

Jet001 [13]

5x+y=2
4x+y=4

5x+y=2
-1( 4x+y=2)

5x+y=2
-4x-y=2

your y'all cancel out so you r left with

x=-2
then you plug the x in to one of the equations
5(-2)+y=2
-10+y=2
then add 10 to both sides
y=12

Answer: x = -2 y = 12

there's the work and all its simple you just have to figure out how to get rid of y or x ( which ever is easier) and you can figure it out after that

3 0

3 years ago

The parking fee at a public garage is $3 for the first hour and 0.75 for every hour after that. how long beyond the first hour c

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

3+0.75x≤6

x≤4

5 0

3 years ago

Solve the inequality

s344n2d4d5 [400]

$-d/34 \leq -2

-d \leq -68

d \geq 68$

3 0

4 years ago

Read 2 more answers

Help me! Another question on khan.

Artyom0805 [142]

Answer:2+2= fish

Step-by-step explanation:

put the first one up side ways this side up --->2 and for the 2nd one this side down ---->2 then it looks like a fish your welcome ugh

5 0

3 years ago

If f(x) = 2x and g(x) = sqrt x,what is the domain of (fog)(x)?

Norma-Jean [14]

Answer:

All Real x larger or equal zero

or in inequality form: $x\geq 0$

or in interval notation: $[0,\infty)$

Step-by-step explanation:

If $f(x)=2x$ and $g(x)=\sqrt{x}$ , then using the definition for the composition of functions $(fo\,g)(x)=f(g(x))$ , we get:

$(fo\,g)(x)=f(g(x)) \\(fo\,g)(x)=f(\sqrt{x} )\\(fo\,g)(x)=2\,\sqrt{x}$

Base on this final expression, we understand that the Domain (numbers that can be used as input of the function and produce a real number as result) of this new function is limited to those x-values larger than or equal to zero. Negative numbers inside the square root will not produce a real number.

Therefore, the Domain is restricted to All Real numbers larger than or equal to o (zero).

This statement can also be given in inequality form as $x\geq 0$

or in interval notation: $[0,\infty)$

7 0

4 years ago