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
Nostrana [21]
3 years ago
15

Solve for x. 13x + 7 = 5x - 20

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
5 0
13x + 7 = 5x - 20
13x - 5x = -20 - 7
8x = -27
x = (-27 / 8)
x = -(27/8)
Serga [27]3 years ago
4 0

Answer:

the correct answer is x = -3  3/8

You might be interested in
14,2,7,3,9 =10 I need help
Misha Larkins [42]

Answer: 7+3 =10

Step-by-step explanation: Those were the only two numbers added or subtracted together that I found made 10. I hope this helps :).

7 0
1 year ago
NEED HELP ASAP!!!! PLEASE!!! Explain the answer!!
xz_007 [3.2K]
She is wrong because she did the square root of 25 multiplied by 2, she should have just done the square root of 50.

For the second part the square root of 50 is 7.07 which rounding would equal 7.1.

Hope this helps.(ノ◕ヮ◕)ノ*:・゚✧ 

4 0
3 years ago
I kind of understand this question, but I'm not sure how to answer it directly, can someone help please.
nordsb [41]
So here we use the pythagorean theorem which is a2 + b2 = c2 (“a” squared times “b” squared equals “c” squared) the length from calvins house to the intersection is “a” and the length from phoebes house to the intersection is “b” so in order to find out the length of “c” (calvins house to phoebes house) we need to use the pythagorean theorem

a2 275x275=75,625

b2 113x113 = 12,769

so now that we have figured out what a2 and b2 are let’s add them

75,625 + 12,769 = 88,394

now since we only need to find out the length and not the area we need to find the square root of 88,394

the square root of 88,394 is 297.311 (i cut off the decimal after three places)

the direct length from phoebes house to calvins is 297.311 meters
5 0
3 years ago
When will the sum of two numbers be zero
mash [69]
The sum of two numbers will be zero when you have the same number and one is positive and one is negative. For example 1 + -1= 0
8 0
3 years ago
Read 2 more answers
Given the following right triangle, find cose, sine, tane sececsce, and cote. Do not
IgorLugansk [536]

Step-by-step explanation:

Use the Pythagorean theorem:

leg^2+leg^2=hypotenuse^2

We have

leg=4,\ hypotenuse=10

Substitute:

4^2+leg^2=10^2

16+leg^2=100             <em>subtract 16 from both sides</em>

leg^2=84\to leg=\sqrt{84}\\\\leg=\sqrt{(4)(21)}\\\\leg=\sqrt4\cdot\sqrt{21}\\\\leg=2\sqrt{21}

sine=\dfrac{opposite}{hypotenuse}\\\\cosine=\dfrac{adjacent}{hypotenuse}\\\\tangent=\dfrac{opposite}{adjacent}\\\\cotangent=\dfrac{adjacent}{opposite}\\\\secant=\dfrac{hypotenuse}{adjacent}\\\\cosecant=\dfrac{hypotenuse}{opposite}

Substitute:

hypotenuse=10,\ opposite=4,\ adjacent=2\sqrt{21}

\sin\theta=\dfrac{4}{10}=\dfrac{2}{5}\\\\\cos\theta=\dfrac{2\sqrt{21}}{10}=\dfrac{\sqrt{21}}{5}\\\\\tan\theta=\dfrac{4}{2\sqrt{21}}=\dfrac{2}{\sqrt{21}}\cdot\dfrac{\sqrt{21}}{\sqrt{21}}=\dfrac{2\sqrt{21}}{21}\\\\\cot\theta=\dfrac{2\sqrt{21}}{4}=\dfrac{\sqrt{21}}{2}\\\\\sec\theta=\dfrac{10}{2\sqrt{21}}=\dfrac{5}{\sqrt{21}}\cdot\dfrac{\sqrt{21}}{\sqrt{21}}=\dfrac{5\sqrt{21}}{21}\\\\\csc\theta=\dfrac{10}{4}=\dfrac{5}{2}

5 0
3 years ago
Other questions:
  • What number is equivalent to 35/4?<br><br> A. 8.34<br> B.8.75<br> C. 7<br> D. 31
    14·2 answers
  • What is the percentage of 1 11/16
    13·2 answers
  • Jose bought a bag of 6 oranges for $2.82.He also bought 5 pineapples.He gave the cashier $20 and received $1.43 change.What did
    6·1 answer
  • Please explain how to find the proportional relationship.
    8·1 answer
  • Find the quotient<br> 77<br> —<br> -11<br><br><br> 77 over negative 11
    11·1 answer
  • An archer hits his target 80% of the time. If he shoots 7 arrows, what is the probability of each event
    5·1 answer
  • Which equation represents an inverse variation?<br> O y = 2x<br> Oy-<br> O yo<br> X<br> O y = -5x
    11·1 answer
  • If 420 = 120%, what would 100% equal?
    12·1 answer
  • PLZZZZ HELP
    15·2 answers
  • I’ll give brainliestaction Multiplication and
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!