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VashaNatasha [74]
3 years ago
9

Please help me with this questions

Mathematics
1 answer:
zalisa [80]3 years ago
4 0
He messed up step 2 he added instead of multiplying
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42/40 into a mixed number is??
SSSSS [86.1K]
Hello there!

So, as we see that 42 is more than the denominator, so, we would have to see by how much it would be over.

40-42=2.

So, sense we have an whole number which would be (1)

Your answer: \boxed{\boxed{\bf 1\frac{2}{40} }}
6 0
3 years ago
How is |3+10| = |3| + |10| equal
Morgarella [4.7K]

Answer:

First we must figure out what the question means. It is asking how the absolute value of 3+10 is equivalent to the absolute value of 3 plus the absolute value of ten.

Next we should solve the expressions: The absolute value of 3 plus 10 is 13. The absolute value of 3 plus the absolute value of 10 is 13. 13 and 13 are the same number.

Therefore, the expressions are equivalent.  Thus, having your answer.

8 0
2 years ago
To solve 5(2^x + 4) = 15...
horrorfan [7]

I don't think you need answer for that you already did it.

5 0
2 years ago
a 34 gram sample of a substance that's used to treat thyroid disorders has a k-value of 0.137. find the substance's half-life, i
Ira Lisetskai [31]

Answer:

5.1 days

Step-by-step explanation:

Given in the question,

initial amount of substance = 34 grams

k-value = 0.137

To find the half life of this substance we will use following formula

N(0)/2 = N(0)e^{-kt}

here N(0) is initial amount of substance

        t is time in days

Plug values in the formula

34 /2 = 34e^{-0.137t}

1/2 = e^{-0.137t}

Take logarithm on both sides

ln(1/2) = ln( e^{-0.137t})

ln(1/2) = -0.137t

t = ln(1/2) / -0.137

t = 5.059

t ≈ 5.1 days (nearest to tenths)

3 0
3 years ago
Solve the inequality:<br> 3(k + 2) -3 &lt; 15
grin007 [14]

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

k < 4

Interval Notation:

(−∞, 4)

6 0
3 years ago
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