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Triss [41]
2 years ago
14

Rewrite the equation below so that it does not have fractions.

Mathematics
1 answer:
Eddi Din [679]2 years ago
8 0
Since the 3 and 7 have 21 as a common multiple you can divide 21 by the denominator of each term and then multiply it by the numerator which get you while numbers
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D-7 =-18<br> What’s the answer?
AlexFokin [52]

Answer:

D = - 9

Step-by-step explanation:

D - 7 = -18

D - 7 + 7 = -18 + 7

D = -9

5 0
2 years ago
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Scientists researching amphibians put tags on 30 frogs in a wetland area. Later, the scientists captured 520 frogs, of which 12
aleksklad [387]

Answer:

I THINK THE ANSWER IS d or e

5 0
3 years ago
What values of c and d make the equation true?
saul85 [17]

Answer:

Third option.

Step-by-step explanation:

You need to cube both sides of the equation. Remember the Power of a power property:

(a^m)^n=a^{mn

\sqrt[3]{162x^cy^5}=3x^2y(\sqrt[3]{6y^d})\\\\(\sqrt[3]{162x^cy^5})^3=(3x^2y(\sqrt[3]{6y^d}))^3\\\\162x^cy^5=27x^6y^36y^d

According to the Product of powers property:

(a^m)(a^n)=a^{(m+n)

Then. simplifying you get:

162x^cy^5=162x^6y^{(3+d)}

Now you need to compare the exponents. You can observe that the exponent of "x" on the right side is 6,  then the exponent of "x" on the left side must be 6. Therefore:

c=6

You can notice that the exponent of "y" on the left side is 5,  then the exponent of "x" on the left side must be 5 too. Therefore "d" is:

3+d=5\\d=5-3\\d=2

4 0
3 years ago
Cho tam giác ABC vuông tại A &lt; góc B=a chứng minh: a) 1+<img src="https://tex.z-dn.net/?f=tan%5E%7B2%7D" id="TexFormula1" tit
dimaraw [331]
<h3><u>L</u><u>H</u><u>S</u><u>:</u><u>-</u></h3>

\\ \sf\longmapsto 1+tan^2A

\boxed{\sf tanA=\dfrac{sinA}{cosA}}

\\ \sf\longmapsto 1+\dfrac{sin^2A}{cos^2A}

\\ \sf\longmapsto \dfrac{cos^2A+sin^2A}{cos^2A}

\boxed{\sf cos^2A+sin^2A=1}

\\ \sf\longmapsto \dfrac{1}{cos^2A}

\\ \sf\longmapsto \dfrac{1}{1-sin^2A}

\\ \sf\longmapsto \dfrac{1}{1}-\dfrac{1}{sin^2A}

\\ \sf\longmapsto \dfrac{1}{sin^2A}

Hence verified

8 0
3 years ago
An automobile tire has a diameter of 59m. What is the circumference of the tire
Kaylis [27]

185.4m  (rounded to 1dp)

Circumference of a circle is the diameter times by pi. 59×pi=185.4

5 0
1 year ago
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