25+ POINTS WILL MARK BRAINLIEST

Mathematics

2 answers:

ICE Princess25 [194]3 years ago

7 0

Answer:

X=12.5

Step-by-step explanation:

3x+3x+15

If it equalls 90 then write it as 6x+15=90

Now isolate X.

6x+15=90

6x=75

x=12.5

CHECK UR WORK

(3*12.5)+(3*12.5)+15=90

37.5+37.5+15=90

75+15=90

90=90

Evgen [1.6K]3 years ago

3 0

Answer:

Step-by-step explanation:

perimeter of rectangle=a+b+c

=3x+3x+15

=6x+15

if perimeter of rectangle is 90,

perimeter=a+b+c

90=3x+3x+15

90-15=6x

75/6=x

12.5=x

You might be interested in

In which example are the events dependent? A) Blake flips a coin 3 times. What is the probability that he flips heads all three

Assoli18 [71]

D) <span>In Mrs. Brown's Geometry class there are 15 boys and 10 girls. The students are presenting projects to the class. If Mrs. Brown selects students at random for presentations, what is the probability that the first 2 students chosen are girls? i
In usatestprep</span>

7 0

3 years ago

Read 2 more answers

The students at Woodward elementary voted for school mascot. The falcon won with 5/8 of the votes. If 536 students voted for a m

drek231 [11]

The answer equals 335

3 0

4 years ago

A 22.4 kg object is accelerating at 1.40 m/s what net force is applied to the object

bezimeni [28]

Answer:

F=ma