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Serggg [28]
3 years ago
7

What are the factor pairs of 21

Mathematics
2 answers:
GarryVolchara [31]3 years ago
3 0
1, 21
3,7
Hope this helps?
oksian1 [2.3K]3 years ago
3 0
1 3 7 21
Hope this helps
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Which theorem or postulate proves the two triangles are similar?
N76 [4]

Answer:

AA Postulate

Step-by-step explanation:

The bottom lines are parallel. In this case they are also congruent. Combined with the top angle this makes in AA postulate

7 0
3 years ago
Find the volume of a coffee can with r=7.5 cm, h= 16.8 cm, to the nearest cubic centimeter.
andriy [413]

Answer:

V = 2968.8 cm³ or 2969 cm³

Step-by-step explanation:

Given the radius, r = 7.5 cm, of a cylindrical coffee can whose height, h = 16.8 cm:

We can find the volume of a cylinder by using the following formula:

V = πr²h

Substitute the given values into the formula:

r = 7.5 cm

h = 16.8 cm

V = πr²h

V = π(7.5)²(16.8)

V = π × 56.25 × 16.8

V = 2968.8 cm³ or 2969 cm³

Therefore, the volume of a coffee can is 2969 cm³.

8 0
3 years ago
The pH of lemon juice at 298 K is found to be 2. 32. What is the concentration of mc014-1. Jpg ions in the solution? Use StartBr
sdas [7]

The concentration of ions in the solution of lemon juice whose pH value is 2.32 is 4.79×10⁻³ M.

<h3>What is pH value?</h3>

The pH value shows that how much a solution is acidic or basic. The range of the pH value lies between the 0-14.

The pH value can be calculated with the following formula.

\rm pH=log[H^{+}]

Here, [H⁺] is the molar hydrogen ion concentration.

The pH of lemon juice at 298 K is found to be 2. 32. Put this value of pH in the above formula as,

\rm 2.32=log[H^{+}]\\\ [H^{+}]=4.79\times10^{-3} \rm \; M

Hence, the concentration of ions in the solution of lemon juice whose pH value is 2.32 is 4.79×10⁻³ M.

Learn more about the pH value here;

brainly.com/question/940314

8 0
2 years ago
3.695 to 4 name the place value to which each number was rounded
Anon25 [30]
3.695 was rounded to the nearest thousandths and 4 is rounded to the nearest ones place. Hope that helped :)
4 0
3 years ago
What are the coefficients in the expression -8y(2nd power) + 12x +5 +7?
oee [108]
It is choice B 

i hope that helps
7 0
4 years ago
Read 2 more answers
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