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leonid [27]
4 years ago
5

Hi I am not good at math so I need help please

Mathematics
1 answer:
andre [41]4 years ago
4 0

Answer:

1) 3:2

2) 2:1 cm

3) 1:4 meters

4) 3:2

5) 2:1:3

Step-by-step explanation:

1) 18:12 reduce --> 3:2

2) 30 - 20 = 10 ---> so 20:10= 2:1

3) 6x4= 24 so --> 6:26 reduce 1:4

4) 25-15= 10 so 15 red to 10 blue reduce ---> 3:2

5) 20 yellow 10 blue 30 red reduce---> 2:1:3

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Can y'all please help.
sattari [20]

Answer:

See explanation

Step-by-step explanation:

<u>Step 1.</u> Substitute for d to solve for n:

From the first equation:

d=70-n

Then substitute it into the second equation:

0.1(70-n)+0.05n=5.5\\ \\7-0.1n+0.05n=5.5\\ \\7+(-0.05n)=5.5\\ \\-0.05n=5.5-7=-1.5\\ \\n=\dfrac{-1.5}{-0.05}=30

<u>Step 2:</u> Substitute for n to solve for d:

d+n=70\\ \\d+30=70\\ \\d=70-30=40

There are 40 dimes and 30 nikels in the piggy bank

6 0
4 years ago
GIVING BRAINLYYYY FOR CORRECT ANSWERRR (if you dont get it tell me if you want me to make a post or try looking for a unanswered
Fed [463]

Answer:

hi! i believe the answer should be (4, 2)!

Step-by-step explanation:

when you reflect across the x-axis, you just move it on the other side of the x-axis line! :D

6 0
3 years ago
Read 2 more answers
Find the value of x.
LUCKY_DIMON [66]
The answer would be 28
3 0
3 years ago
Read 2 more answers
solve the inequality $\frac{29}{289z&lt;\frac{16}{161}z$. try to solve the problem without doing a lot of messy computations!
Lesechka [4]

The solution to the given inequality as represented in the task content are; z < - 1.00485413 OR z > 1.00485413.

<h3>What is the solution to the given inequality?</h3>

It follows from the task content that the solution of the given inequality; ( 29 / 289z ) < ( 16 / 161 ) z is to be determined.

Since the given inequality is;

( 29 / 289z ) < ( 16 / 161 ) z

By cross multiplication; we have;

161 × 29 < ( 16z × 289z )

( 161 × 29 ) / ( 16 × 289 ) < z²

1.00973183 < z²

Therefore;

1.00485413 < z. OR. -1.00485413 > z.

Ultimately, z < - 1.00485413 OR z > 1.00485413.

Read more on inequalities;

brainly.com/question/25275758

#SPJ1

5 0
1 year ago
Question 2 of 5
jeka57 [31]

The number of solutions in each equation are as follows:

  1. 1 solution: 4^x = 2^{-x}
  2. 2 solution: 3/2x + 2 = 2^{x} + 1     and     3x + 1 = 2^{-x}.
  3. No solution: 4^x + 2 = 3^x - 1       and     2x - 5 = 3^{x} + 2.

<h3>How to determine the number of solutions?</h3>

In order to determine the number of solutions, we would split the single equation to two different equations and then plot a graph, so as to reveal their solutions.

This ultimately implies that, the number of solutions is equal to the point of intersection between the lines of the equations plotted on a graph.

In conclusion, the number of solutions in each equation are as follows:

  1. 1 solution: 4^x = 2^{-x}
  2. 2 solution: 3/2x + 2 = 2^{x} + 1     and     3x + 1 = 2^{-x}.
  3. No solution: 4^x + 2 = 3^x - 1       and     2x - 5 = 3^{x} + 2.

Read more on number of solutions here: brainly.com/question/12558210

#SPJ1

3 0
2 years ago
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