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UkoKoshka [18]
3 years ago
6

In a certain​ chemical, the ratio of zinc to copper 4 is 17 to. A jar of the chemical contains 646 of copper. How many grams of

zinc does it​ contain?
It contains
nothing grams of zinc

PLZZZZZZ HELPPPPP
Mathematics
1 answer:
g100num [7]3 years ago
6 0

1130.5 grams of zinc.

hope this helps : )

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A 6-foot tall man casts a shadow that is 12 feet long. What is the measure of the sun's angle of elevation? Enter your answer, r
Masteriza [31]

Answer:

27^{\circ}

Step-by-step explanation:

Let x represent the sun's angle of elevation.

We have been given that a 6-foot tall man casts a shadow that is 12 feet long.

Upon looking at our attachment we can see that man and his shadow forma a right triangle with respect to ground, where height of man is opposite side and his shadow is adjacent side.

Since tangent relates opposite side of a right triangle with adjacent, so we can set an equation as:

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

\text{tan}(x)=\frac{6}{12}

\text{tan}(x)=\frac{1}{2}

Using arctan we will get,

x=\text{tan}^{-1}(\frac{1}{2})

x=26.565051177078^{\circ}\approx 27^{\circ}

Therefore, the measure of the sun's angle of elevation is 27 degrees.

3 0
4 years ago
Which car gets the best gas mileage, or most miles per gallon? A 240 miles on 10 gallons car B 160 miles on 5 gallons car C 30 m
postnew [5]

A.

240 miles : 10 gallons

240/10 miles : 10/10 gallons

24 miles : 1 gallon

Car A travels 24 miles on one gallon of gas.

The mileage is 24 mpg (miles per gallon)

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B.

160 miles : 5 gallons

160/5 miles : 5/5 gallons

32 miles : 1 gallon

The mileage is 32 mpg. So far, car B is better than car A.

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C.

30 miles : 1 gallon

The mileage is 30 mpg, which is not better than car B

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D.

168 miles : 6 gallons

168/6 miles : 6/6 gallons

28 miles : 1 gallon

Mileage is 28 mpg. Car C has better mileage and car B has the best overall.

----------------------------

<h3>Answer: The car with the best mileage is car B with 32 mpg</h3>

The rankings, from best to worst mileage is: B, C, D, A

3 0
3 years ago
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Find domains of the following expressions.<br> sqrt(2-3x)+sqrt(5-x)
marishachu [46]

Find the domain by finding where the expression is defined.

Interval Notation:

Interval Notation: ( − ∞ , 2 3 ] (-∞,23]

Set-Builder Notation: { x ∣ ∣ ∣ x ≤ 2 3 }

3 0
3 years ago
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Which digit in 1,377,207 has a value that is 1/10 the value of the 7 in the ten thousand place?
Nesterboy [21]

Considering the values of the digits in the number, we have that digit 2 has a value that is 1/10 the value of the 7 in the ten thousand place.

<h3>What are the values of the digits in the number 1,377,207?</h3>

We start counting the values from the final number, from 1 and multiplying by 10, hence:

  • Digit 7 has a value of 1.
  • Digit 0 has a value of 10.
  • Digit 2 has a value of 100.
  • Digit 7 has a value of 1,000.
  • Digit 7 has a value of 10,000. -> Ten thousand place.
  • Digit 3 has a value of 100,000.
  • Digit 2 has a value of 1,000,000.

One tenth of the ten thousand place is a value of 100, hence digit 2 has a value that is 1/10 the value of the 7 in the ten thousand place.

More can be learned about the values of the digits in a number at brainly.com/question/2041524

#SPJ1

5 0
2 years ago
25 − (8 − 4) ÷ 6 • 3=what plzzzz answer!<br> Will mark Brainliest!!!!
serg [7]
25 - (8-4) /6 *3 = 25 - 2 / 6 * 3
=25-1
=24 #


“/”= divide
“*”= multiply
4 0
3 years ago
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