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

Solve 3² (2 + 5) − 6.

azamat

3^2(7)-7
9*7-6
63-6
=57

8 0

3 years ago

Read 2 more answers

If a point is om the prependicular bisector of a segm

irina [24]

Yes, that's a true statement. It's either a theorem or
a corollary to a theorem in elementary geometry.

5 0

3 years ago

A regular pentagon has side lengths of 14.1 centimeters and an apothem with length 12 centimeters.

lina2011 [118]

Answer:

The approximate area of the regular pentagon is 423 sq.cm.

Step-by-step explanation:

Formula of area of regular pentagon = $\frac{Pa}{2}$

P=Perimeter of pentagon

a=Apothem

Side of pentagon = 14.1 cm

Perimeter of pentagon = $5 \times Side = 5 \times 14.1=70.5$

Apothem=12 cm

Area of regular pentagon = $\frac{70.5 \times 12}{2}=423 cm^2$

Hence the approximate area of the regular pentagon is 423 sq.cm.

8 0

3 years ago

Read 2 more answers

Can someone help me with this?

Margarita [4]

$\large \text{Hello keep learning!}$

As we know that one million is 1,000,000.

So we can write it as:-

➢ 1×10⁶

5 0

2 years ago

Read 2 more answers

(PLEASE HELP ASAP) Marc mixes blue and yellow paint to make his favorite shade of green, which he'll use to paint his house. He

azamat

He can use 14 cans of blue and 20 cans of yellow because blue goes up by 2 and yellow goes up by 3 each time hope this helped (mark brainliest?)

6 0

2 years ago