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Sonbull [250]
3 years ago
7

Help me please , the question is in the picture .

Mathematics
2 answers:
Zina [86]3 years ago
3 0

Answer:

42^0 i think sorry

Step-by-step explanation:

valkas [14]3 years ago
3 0

Answer: 4.2x10^5=420000

Step-by-step explanation: its a positive five so you go in the positive direction from the decimal but if it was a negative you could go the other way (hope this helps)

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A store has a total of 15 bicycles and tricycles. There are 37 wheels. How many tricycles does the store have?
Vlad1618 [11]
X+y=15
2x+3y=37

15-x=y
2x+3(15-x)=37
2x+(45-3x)=37
2x-3x+45=37
-1x=-8
x=8

x is the amount of bikes, so there are 8 bikes. 8x2=16.
37-16=21
21/3=7

There are 7 tricycles.
6 0
3 years ago
Read 2 more answers
Find the number if: 4.5% of it is 23% of 45
Usimov [2.4K]
Well, let's say the number is "x", so "x" is the 100%.

now, what the dickens is 23% of 45 anyway?

if we take 45 to be the 100%, what is its 23%?

\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
45&100\\
a&23
\end{array}\implies \cfrac{45}{a}=\cfrac{100}{23}\implies \cfrac{45\cdot 23}{100}=a\implies 10.35=a

ok, well, we know then that 4.5% of "x" is 10.35, we also know that "x" is the 100%, what is "x" anyway?

\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
x&100\\
10.35&4.5
\end{array}\implies \cfrac{x}{10.35}=\cfrac{100}{4.5}\implies x=\cfrac{10.35\cdot 100}{4.5}
3 0
4 years ago
Read 2 more answers
How do I find the length of the side.
ludmilkaskok [199]
Use the Pythagorean theorem /look at the picture/

? = x

1.\\x^2+13^2=28^2\\x^2+169=784\ \ \ |subtract\ 169\ from\ both\ sides\\x^2=615\\\boxed{x=\sqrt{615}}\\\\3.\\x^2+10^2=28^2\\x^2+100=784\ \ \ \ |subtract\ 100\ from\ both\ sides\\x^2=684\\x=\sqrt{684}\\x=\sqrt{36\cdot19}\\x=\sqrt{36}\cdot\sqrt{19}\\\boxed{x=6\sqrt{19}}

5 0
4 years ago
Find three consecutive integers such that when three times the third is increased by the first, the result is 8 less than five t
nexus9112 [7]

Answer:

<h3>            9, 10 and 11</h3>

Step-by-step explanation:

x - the smallest of three consecutive integers (the first)

x+1 - the next of three consecutive integers (the second)

x+2 - the last of three consecutive integers (the third)

3(x+2) - three times the third integer

<u>3(x+2)+x </u> - three times the third increased by the first

5(x+1)   - five times the second tnteger

<u>5(x+1)-8 </u>  - 8 less than five times the second

3(x + 2) + x = 5(x + 1) - 8

3x + 6 + x = 5x + 5 - 8

   4x + 6 = 5x - 3

       -4x        -4x

        6 = x - 3

         x = 9

x+1 = 10

x+2 = 11

Check:  3×11+9 = 33+9 = <u>42</u>,   5×10-8=50-8 = <u>42</u>

8 0
4 years ago
two books have a total of 500 pages one book has 350 pages more than the other.Find the number of pages of each book.
Greeley [361]

Answer:

150+350

the other book has 150

5 0
3 years ago
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