3 years ago

Strontium-90 has a half-life of about 29 years. After 65 years, about how many

Mathematics

1 answer:

oksian1 [2.3K]3 years ago

4 0

Answer:

about 11.16 grams.

Step-by-step explanation:

$65/29=2.24$

So, if we divide 25 by 2.24, we should find the answer. We get:

$25/2.24=$ about 11.16 grams.

You might be interested in

Please help:)I’m not good at math and need to get this done ASAP

german

Answer:

25 

Step-by-step explanation:

let's solve,

=》

$5 {}^{ \frac{ - 5}{2} } \times 5 { \frac{9}{2} }^{}$

=》

${5}^{ \frac{ - 5}{2} + \frac{9}{2} }$

=》

$5 {}^{ \frac{4}{2} }$

=》

$5 {}^{2}$

=》

$25$

glad to help you.....

8 0

2 years ago

A baseball team batted 250 times during the season. During the season they got 120 hits, 60 strikeouts, 50 flyouts and 20 ground

GuDViN [60]

Answer:

52%

Step-by-step explanation:

250 TAB (Team At Bats)

120 TH (Team Hits)

130 TBO [60+50+20] (Team Batted Out)

130/250 = 52% or .52

7 0

3 years ago

Question 2 : which characteristic distinguishes ieee 1394 from usb 2.0

Lorico [155]

The characteristics that distinguishes IEEE 1394 from USB 2.0 is that USB supports more devices on a single bus

3 0

2 years ago

Solve 6^x+2 = 10 for x using the change of base formula

pashok25 [27]

Answer:

$x\approx-0.7149$

Step-by-step explanation:

$\displaystyle 6^{x+2}=10\\\\\log_6(6^{x+2})=\log_6(10)\\\\x+2=\frac{\log(10)}{\log(6)}\\\\x+2\approx1.2851\\\\x\approx-0.7149$

Recall that the change of base formula is $\displaystyle \log_a(b)=\frac{\log(b)}{\log(a)}$

3 0

1 year ago

An angle measures 15 degrees more than its complement. Find the measures of the two angles

ale4655 [162]

x = one angle

y = other angle

y = 15+x

complements add to 90 degrees

x+y = 90

substitute for y (15+x)

x + 15+x = 90

combine like terms

2x+ 15 = 90

subtract 15 from each side

2x = 75

divide each side by 2

x = 75/2

x = 37.5

y = x+15

y = 37.5 + 15

y =52.5

The two angles are 37.5 and 52.5

3 0

2 years ago