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1 year ago

PLS HELP

Mathematics

1 answer:

Setler [38]1 year ago

8 0

Answer:

yes

Step-by-step explanation:

41/50=615/75

same ratio

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Mr. Rr the Rreliable Rrobot has been programmed to whistle every $18$ seconds and do a jumping jack every $42$ seconds, starting

sveta [45]

Answer:

7 times during the first 15 minutes

Step-by-step explanation:

Remember that

$1\ min=60\ sec$

$15\ min=15(60)=900\ sec$

Decompose the numbers 18 and 42 in prime factors

we know that

$18=(2)(3^2)$

$42=(2)(3)(7)$

Find the least common multiple (LCM)

The LCM is

$(2)(3^2)(7)=126\ sec$

we need to find all multiples of 126 that are less than or equal 900.

$126*1=126\ sec\\126*2=252\ sec\\126*3=378\ sec\\126*4=504\ sec\\126*5=630\ sec\\126*6=756\ sec\\126*7=882\ sec$

therefore

7 times during the first 15 minutes

7 0

2 years ago

Solve the unknown variable

dsp73

Set measurements equal to each other.
7X + 20 = 8X + 8
-7X -7X

20 = X + 8
-8 -8

ANSWER: X=12

5 0

2 years ago

Simplify 4 to the 7th over 5 squared all raised to the 3rd power.

Nikolay [14]

$\bf \left( \cfrac{4^7}{5^2} \right)^3\impliedby \textit{first, let's distribute the exponent}
\\\\\\
\left( \cfrac{4^{7\cdot 3}}{5^{2\cdot 3}} \right)\implies \cfrac{4^{21}}{5^6}
\implies \cfrac{4398046511104}{15625}$

4 0

2 years ago

Help plssss plssss !!1

Alecsey [184]

Answer:

were u looking for some like this, its for the first question

Step-by-step explanation:

8 0

1 year ago

Read 2 more answers

A boat costs $19,200 and decreases in value by 12% per year. How much will the

fomenos

Find 10% of $19,200 = 1,920
Find 2% of $1,920 = 384
12% = $2,304
19,200 - 2,304 = 16,896 (year 1)
Repeat this until you have your 5th year :)

4 0

2 years ago