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jekas [21]
3 years ago
15

In a certain​ chemical, the ratio of zinc to copper is 3 to 17. A jar of the chemical contains 697 grams of copper. How many gra

ms of zinc does it​ contain?
PLZ PLZ HELP
Mathematics
1 answer:
serg [7]3 years ago
7 0

Answer:

first you have to divide 697 / 17 because 17 is the copper

and you want to know how much pairs it gives you

and the answer is 41 so you're forty-one pairs now u times 41 with 3 to find the grams of zinc in the certain chemical. and 41 * 3 = 123

so you have 123 grams of zinc in the certain chemical

Step-by-step explanation:

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Use the correct trig function to find the value of x. SOH, CAH, TOA​
LenaWriter [7]

Answer:

About 11.025

Step-by-step explanation:

\sin{58^\circ}=\dfrac{x}{13}\\\\x=13\cdot\sin{58^\circ} \approx11.025

7 0
3 years ago
Triangle ABC has a right angle at C. Select all measurements which would mean it has a hypotenuse with a length of 10 units. a.
Delvig [45]

Option d: Angle A is 30 degrees, BC is 5 units

Option e: AC is 8 units, BC is 6 units

Explanation:

The triangle ABC has a right angle at C.

The length of the hypotenuse is 10 units.

The image of the triangle with this measurement is attached below:

Option a: Angle A is 20 degrees, BC is 2 units

\begin{aligned}\sin 20 &=\frac{2}{h y p} \\h y p &=\frac{2}{\sin 20} \\&=5.8476\end{aligned}

Since, hypotenuse is 10 units, Option a is not correct answer.

Option b: AC is 7 units, BC is 3 units

\begin{aligned}A B &=\sqrt{7^{2}+3^{2}} \\&=\sqrt{49+9} \\&=\sqrt{58}\end{aligned}

Since, hypotenuse is 10 units, Option b is not correct answer.

Option c: Angle B is 50 degrees, BC is 4 units

\begin{aligned}\cos 50 &=\frac{4}{h y p} \\h y p &=\frac{4}{\cos 50} \\&=6.222\end{aligned}

Since, hypotenuse is 10 units, Option c is not correct answer.

Option d: Angle A is 30 degrees, BC is 5 units

\begin{aligned}\sin 30 &=\frac{5}{h y p} \\h y p &=\frac{5}{\sin 30} \\&=10\end{aligned}

Since, hypotenuse is 10 units, Option d is the correct answer.

Option e: AC is 8 units, BC is 6 units

\begin{aligned}A B &=\sqrt{8^{2}+6^{2}} \\&=\sqrt{64+36} \\&=\sqrt{100} \\&=10\end{aligned}

Since, hypotenuse is 10 units, Option e is the correct answer.

Thus, Option d and e are the correct answers.

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3 years ago
A department store is holding a drawing to give away free shopping sprees. There are 10 customers who have entered the drawing:
Charra [1.4K]
4/10^2 = 0.04 or 4% Hope that helps
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labwork [276]

Answer:

$2/3d

Step-by-step explanation:

since it says that if she were to buy all three beanie babies, she'd spend all of her money, this means that since she bought 1, she only used up 1/3 of her money, or $1/3d.

so, after buying the beanie baby, she has $2/3d left.

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Answer:

30x-16y+10-10x-5y+4

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Step-by-step explanation:

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