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
Dominik [7]
3 years ago
15

Can i get some help on these math problems please

Mathematics
1 answer:
irga5000 [103]3 years ago
6 0

Answer:

15. 5,600,000

17. 469

i can't really see 19

Step-by-step explanation:


You might be interested in
HELP I DONT GET IT!!!For the system below solve using linear combinations method 2a+3b=1 and -2a+b=11
Maksim231197 [3]
Linear combination method just means to add the equations so that one variable with cancel. In this case the a values are already set up so that they will cancel.
2a + 3b = 1
-2a + b = 11
4b = 12
b = 3

now put 3 back into either of the original equations and solve for a.
2a + 3(3) = 1
2a + 9 = 1
2a = -8
a = -4
(-4,3)
3 0
2 years ago
Read 2 more answers
May someone please help me ASAP
Ivenika [448]

Answer:

84+n=342

Step-by-step explanation:

you would subtract 84 from 342 to find the width since it is perimeter.

3 0
3 years ago
High grade steel consists of 85% iron and 15% magnese. Low grade steel consists of 67% iron and 33% mag ese. NASA orders 500 ton
Mamont248 [21]

Answer:

361\dfrac{1}{9} tons of high steel and 138\dfrac{8}{9} tons of low steel

Step-by-step explanation:

Let x be the number of tons of high grade steel and y be the number of tons ow low grade steel needed.

In x tons of high grade steel there are

0.85x tons of iron

0.15x tons of magnese

In y tons of low grade steel there are

0.67y tons of iron

0.33y tons of magnese

NASA orders 500 tons of steel, so

x+y=500

and specifies that it must be in the proportion 80% iron and 20% magnese, so

0.85x+0.67y=500\cdot 0.8\\ \\0.85x+0.67y=400

From the first equation,

x=500-y

Substitute it into the second equation:

0.85(500-y)+0.67y=400\\ \\425-0.85y+0.67y=400\\ \\-0.18y=-25\\ \\y=\dfrac{2,500}{18}=138\dfrac{8}{9}\ tons\\ \\x=361\dfrac{1}{9}\ tons

7 0
3 years ago
is the degree of ( f+g)(x) equal to the degree of f(x) or g(x) , which ever has the highest degree ?​
Virty [35]

Answer:

for all x in the domain of f(x), or odd if, f(−x) = −x, for all x in the domain of f(x), or neither even nor odd if neither of the above are true statements. A kth degree polynomial, p(x), is said to have even degree if k is an even number and odd degree if k is an odd number

Step-by-step explanation:

7 0
2 years ago
Is the graph increasing, decreasing, or constant where -3 < X <-1?
Romashka [77]

Answer:

decreasing

Step-by-step explanation:

since its negative it will slope down

8 0
3 years ago
Other questions:
  • How to factor 4x^2+ 40x+85
    9·1 answer
  • Determine if the properties define a ray or a line segment
    9·2 answers
  • A. Equilateral<br> B. Right<br> C. Obtuse<br> D. Acute<br> E. Scalene
    6·2 answers
  • A jar contains 125 marbles. Given that 4% of the marbles are green 60% of the marbles are blue, and the rest are red, how many r
    15·1 answer
  • One number is 2 less than two-thirds the other. Their sum is 103. Find the two numbers
    10·2 answers
  • Kylie has only quarters and nickels in a jar the total value in the jar is $2 if there are a total of 20 coins how many of each
    5·1 answer
  • Someone plz help me
    14·1 answer
  • The population of a town has been growing, following the equation P=400t+3000, where t is years after 2010. The number of restau
    8·1 answer
  • What fraction of the following diagram is shaded. Write your answer in its simplest<br>form.​
    7·2 answers
  • I need help please, i need the answer now!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!