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Debora [2.8K]
1 year ago
9

An element with mass 210 grams decays by 8.3% per minute. How much of the element is remaining after 15 minutes, to the nearest

10th of a gram?
Mathematics
1 answer:
alexandr1967 [171]1 year ago
0 0

Answer:

57.2 g

Step-by-step explanation:

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Hey guys I need help with this right quick...got some time to help????
Zepler [3.9K]
Answer=18
3x4=12
12x6=72
72x1/4=18
7 0
1 year ago
Evaluate.<br><br><br><br> 2⋅((42)−1)
Nana76 [90]

Answer:

Hi there!

Your answer is:

<em />

<em>Question was unclear! See below for answer possibilities!</em>

Step-by-step explanation:

<u>IF "-1" MEANS MULTIPLY BY NEGATIVE 1</u>

2((42) -1 ))

2(-42)

<h2><em>-84</em></h2>

<u>IF "-1" MEANS SUBTRACT 1</u>

2((42)-1)

2(41)

<h2><em>82</em></h2>

Hope this helps

5 0
1 year ago
Simplify: - 7a + 8 + 5a
Gnesinka [82]

Answer:

it is -2a+8 your welcome

5 0
10 months ago
Read 2 more answers
A block of stone measures 15 cm X 15 cm X 20 cm. What is the total surface area of the stone?(Hint: A block has six sides.)
BARSIC [14]
Look\ at\ the\ picture.\\\\2\ sides:\ 15cm\times15cm\\\\Area:A_1=2\times(15cm\times15cm)=2\times225cm^2=450cm^2\\\\4\ sides:15cm\times20cm\\\\Area:A_2=4\times(15cm\times20cm)=4\times300cm^2=1200cm^2\\\\Area\ of\ the\ block:\\\\A=A_1+A_2\\\\\boxed{A=450cm^2+1200cm^2=1650cm^2}

5 0
1 year ago
Pls help. What is the appropriate congruent for these triangles
Aleksandr [31]

Answer:

Side-Side-Side (SSS) Congruence - if three sides of one triangle are congruent to three sides of  another triangle, then the triangles are congruent.

Side-Angle-Side (SAS) Congruence - If two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

Angle-Side-Angle (ASA) Congruence - If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

Angle-Angle-Side (AAS) Congruence - If two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

u see which one fits

5 0
1 year ago
Read 2 more answers
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