1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anvisha [2.4K]
3 years ago
9

Solve the proportion: 5/x+7=3/x+3

Mathematics
1 answer:
Allushta [10]3 years ago
7 0

Answer:

x=3

Step-by-step explanation:

cross multiply

5(x+3)=3(x+7)

5x+15=3x+21

5x+15-3x=3x+21-3x

2x+15=21

2x+15-15=21-15

2x=6

x=3

You might be interested in
Iliana wants to find the perimeter of triangle ABC. She uses the distance formula to determine the length of AB. Finish Iliana’s
8090 [49]
The hypotenuse is 5, the sides are 3 and 4. The perimeter is the addition of those 3 numbers.
5+4+3 = 12 units

For future reference, if the sides of a right triangle are any multiples of 3 and 4, the hypotenuse is the same multiple of 5. This triangle has sides with lengths 3, 4, and 5, and a triangle with sides 9 and 12 would have a hypotenuse of 15 :)

5 0
3 years ago
Read 2 more answers
this wooden frame is made of three planks attached with glue and nails. the wood will be painted with emulsion paint which takes
Solnce55 [7]

Answer:

this wooden frame is made of three planks attached with glue and nails. the wood will be painted with emulsion paint which takes 70ml of paint per meter of wood. calculate the amount of paint needed to cover all the wood.​ there's a triangle right angle with the hypotenuse as 10m and the vertical side as 6m

Step-by-step explanation:

8 0
2 years ago
Find the area of the triangle below
Vitek1552 [10]

Answer:

c

Step-by-step explanation:

9.9 times 4.4 divide by two

7 0
2 years ago
18. Determine the common difference, the fifth term, and the sum of the first 100 terms of the following sequence:
Ksenya-84 [330]

a_1=1,\ a_2=2.5,\ a_3=4,\ a_4=5.5,\ ...\\\\a_2-a_1=2.5-1=1.5\\a_3-a_2=4-2.5=1.5\\a_4-a_3=5.5-4=1.5\\a_{n+1}-a_n=1.5=constans\\\\\text{It's an arithmetic sequence with}\\a_1=1,\ \boxed{d=1.5}\\\\a_n=a_1+(n-1)d\to a_n=1+(n-1)(1.5)=1+1.5n-1.5\\\\a_n=1.5n-0.5\\\\a_5=1.5(5)-0.5=7.5-0.5=7\\\boxed{a_5=7}\\\\\text{The formula of a Sum of the First n Terms of an Arithmetric Sequence:}\\\\S_n=\dfrac{2a_1+(n-1)d}{2}\cdot n\\\\\text{We have:}\\a_1=1,\ d=1.5,\ n=100\\\\\text{Substitute}

S_{100}=\dfrac{(2)(1)+(100-1)(1.5)}{2}\cdot100=\dfrac{2+(99)(1.5)}{1}\cdot50\\\\=(2+148.5)\cdot50=150.5\cdot50=7,525\\\\\boxed{S_{100}=7,525}\\\\Answer:\\the\ common\ difference:\ d=1.5\\the\ fifth\ term:\ a_5=7\\the\ sum\ of\ first\ 100\ terms:\ S_{100}=7,525

8 0
3 years ago
Here is a clue about a secret number:
NeX [460]
It is not a multiple of 8
7 0
3 years ago
Other questions:
  • Sloane needs 2/3 hour to drive to her grandmother's house. It takes her 4 times as long to drive to her cousin's house. How long
    13·1 answer
  • A house was valued at 398,000.over several the house increased by 0.08
    8·1 answer
  • Let f(x)=3x2−5x+13 and g(x)=2x−7 . What is g(f(x)) ?
    6·1 answer
  • Greg has $56. Tom has $17 more than Greg. Jason has 8 less than Tom.How much money dose Jason has
    15·2 answers
  • Graph y = −x^2 − 1. Identify the vertex of the graph. Tell whether it is a minimum or maximum.
    13·1 answer
  • Did i did it right and explain the answer?
    9·1 answer
  • There are 400 people in a studio audience. The probability that a person chosen at random from this audience is male is 5/8. How
    8·1 answer
  • Evaluate:<br><br> 4(s +8) = 48
    14·1 answer
  • Solve for X. <br><br> A. 10.96 <br> B. 4.88<br> C. 0.04<br> D. 5.34
    5·1 answer
  • Please help meeee i already did question 1 i just need question 2​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!