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sdas [7]
2 years ago
5

Evaluate t-7 for t =20

Mathematics
2 answers:
Luda [366]2 years ago
5 0

Answer:

The answer is 14

Step-by-step explanation:

t - 7 ; t = 20

20 - 7 = 14

Thus, The answer is 14

<u>-</u><u>TheUnknownScientist</u><u> 72</u>

belka [17]2 years ago
5 0
T - 7
20 - 7 = 13

ANSWER: 13
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What is the difference written in scientific notation? 0.00067 - 2.3 x 10^5
shepuryov [24]
0.00067=67X10^5 so

67X10^5-2.3X10^5

64.7X10^5 which can be expressed as:

6.47X10^6

(not sure if it matters to you or not, but technically we only had two significant figures so it should be rounded to 6.5X10^6)


5 0
3 years ago
The elements that compose seawater, along with the corresponding percents, are shownin the table.Mrs. Buller collects a 500-ml s
belka [17]

Answer: Mrs.Buller collects a 500-ml sample of seawater for her chemistry class, and it has 1.94% of chlorine, we have to determine the amount of chlorine in the sample:

\begin{gathered} C=\frac{1.94}{100}\times500=9.7ml \\ C=9.7ml \end{gathered}

Therefore the chlorine content in 500ml of water is 9.7ml.

3 0
1 year ago
In a right triangle ΔABC, the length of leg AC = 5 ft and the hypotenuse AB = 13 ft. Find the length of the angle bisector of an
Sauron [17]

Answer: the length of the angle bisector of angle ∠A is 6 ft

Step-by-step explanation:

The diagram of the right angle triangle ABC is shown in the attached photo

Looking at triangle ABC,

cos θ = adjacent side/hypotenuse side

cos θ = 5/13 = 0.3846

θ = 67.38 degrees

The bisector of an angle divides it into two equal halves. The bisector is represented by line AD.

θ/2 = 67.38/2 = 33.69 degrees

Therefore,

Cos 33.69 = 5/AD

AD × Cos 33.69 = 5

AD = 5/Cos 33.69 = 5/0.832

AD = 6 ft

3 0
3 years ago
Solve: 2x+3y=1<br> y=-2x+11
Sauron [17]

Answer:

(8, -5); x=8; y=-5

Step-by-step explanation:

i'll be solving via substitution

2x+3y=1; y=-2x+11

2x + 3(-2x +11) = 1

2x -6x +33 = 1

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x = 8

2(8) + 3y = 1

16 + 3y = 1

3y = -15

y = -5

(8, -5)

Check:

-5 = -2(8) + 11

-5 = -16 + 11

-5 = -5

6 0
2 years ago
PLS HELP with #2 its only that one question 31 brainlys
Mamont248 [21]

Answer:

the answer is 1

$56 in savings and $4 per week

4w + 56

Step-by-step explanation:

5 0
2 years ago
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