Which equation results from adding the equations in this system?

Mathematics

2 answers:

hram777 [196]3 years ago

7 0

Id think the awnser is 7x=35 but not sure.

Romashka [77]3 years ago

4 0

I think it's x= -5 because the bottom 4 cancel each other out.

11x- 3y=-17
-4x+3y=-18
-------------------
7x= -35 divide by 7

x= -5

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Find the area for 5 and 7

hammer [34]

Answer and Step-by-step explanation:

The area of a circle:

$A = \pi r^{2}$

d = 2r

Plug in the values.

A = $\pi 7^{2}$

A = 49 $\pi$

58 = 2r

r = 29

$A = \pi 29^{2}$

A = $841\pi$

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7 0

2 years ago

Curtis is twice as old as his brother Jonathan. Olivia is six years younger than Jonathan. The sum of their ages is 58 years.

liraira [26]

C=2 times j
c=2j
o=j-6
c+j+o=58

subsitte j-6 for o and 2j for c

2j+j+j-6=58
4j-6=58
add 6 to both sides
4j=64
divide both sides by 4
j=16

sub back

c=2j
c=2(16)
c=32

o=j-6
o=16-6
o=10

curtis=32
olivia=10
jonathan=16

equations are
c+j+o=58
c=2j
o=j-6

7 0

3 years ago

Read 2 more answers

What is the answer, and how do I solve that equation in order to get my answer? I really want to get the hang of this.

Mrrafil [7]

Answer:

-x^2+4x+6

Step-by-step explanation:

f(x) = 4x+1

g(x) = x^2 - 5

(f-g) (x) = 4x+1 - ( x^2 - 5)

Distribute the minus sign