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kotykmax [81]
3 years ago
12

Can someone help me really please

Mathematics
2 answers:
NARA [144]3 years ago
4 0

Answer:

The value of the digit in the purple highlights is 7,000, while the value of the digit in yellow highlights is 700.

Step-by-step explanation:

vekshin13 years ago
3 0

Answer:

the seven in 57,890 is in the ten thousands place as opposed to the other one is in the hundredths place

Step-by-step explanation:

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7. Triangles CDE and RST are similar triangles. What is
andreyandreev [35.5K]

Answer:

CD = 25 ft

Step-by-step explanation:

\triangle CDE \sim \triangle RST

\therefore \frac{CD}{20}=\frac{40}{32}

(Corresponding sides of similar triangles are in proportion)

\therefore \frac{CD}{20}=\frac{5}{4}

\therefore CD = \frac{5}{\cancel 4}\times \cancel {20} \:\:\blue{\bold{5}}

\therefore CD = 5\times 5

\therefore CD = 25\: ft

6 0
3 years ago
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The half life of silicone-32 is 710 years. If 30 grams is present now, how much will be present in 300 years?
Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

                                           N(t)=N_0(\frac{1}{2})^{\frac{t}{t_{1/2}}

where,

N(t) = quantity of the substance remaining

N_0 = initial quantity of the substance

t = time elapsed

t_{1/2} = half life of the substance

From the information given we know:

  • The initial quantity of silicone-32 is 30 g.
  • The time elapsed is 300 years.
  • The half life of silicone-32 is 710 years.

So, to find the quantity of silicone-32 remaining we apply the above equation

N(t)=30\left(\frac{1}{2}\right)^{\frac{300}{710}}=30\left(\frac{1}{2}\right)^{\frac{30}{71}}\approx22.38 \:g

22.38 g of silicone-32 will be present in 300 years.

7 0
3 years ago
Which of the following is the solution to the equation x^2-36x=0
Marizza181 [45]
x^2-36x=0 \\
x(x-36)=0 \\
x=0 \ \lor \ x-36=0 \\
x=0 \ \lor \ x=36 \\
\boxed{x=0 \hbox{ or } x=36}
7 0
3 years ago
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Hey! Can someone do this real quick? 20 points!!!
likoan [24]

Answer:

i think about 80 cm or 100cm

5 0
3 years ago
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I need help with finding the correct way of order of operations.
Alika [10]
I hope this helps you



6+4×2^3



6+4×8


6+32


38
5 0
3 years ago
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