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marta [7]
3 years ago
10

lisa sold 81 magazine subscriptions, which is 27% of her class fundraising goal. how many magazine subscriptions does her class

have to sell?
Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
6 0
300 because You have to multiply 81 times 100 and then divide by 27
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Please help!! I don't understand cube roots!!
qaws [65]
384|2
192|2
96|2
48|2
24|2
12|2
6|2
3|3
1

384=2^7\cdot3=2^6\cdot2\cdot3=(2^2)^3\cdot6=4^3\cdot6\\\\
\sqrt[3]{384}=\\
\sqrt[3]{4^3\cdot6}=\\
\sqrt[3]{4^3}\cdot\sqrt[3]{6}=\\
4\sqrt[3]6\Rightarrow C

3 0
3 years ago
Please help me I don't knoe
forsale [732]

Answer:

x = sqrt(147)

Step-by-step explanation:

This is a right triangle, so we can use the Pythagorean theorem.

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse.

x^2 +7^2 = 14^2

x^2 +49 = 196

Subtract 49 from each side

x^2 = 147

Take the square root of each side

sqrt(x^2) = sqrt(147)

x = sqrt(147)

4 0
2 years ago
Read 2 more answers
Subtract. -8- 21= would -13 be the answer
FrozenT [24]
-8-21=-29
6 0
3 years ago
Cho Q(x)=x^2+mx-12.Biết Q(-3)=0.tìm nghiệm còn lại
Pachacha [2.7K]

Answer: m=-1.

Step-by-step explanation:

Q(x)=x^2+mx-12\ \ \ \ Q(-3)=0\ \ \ \ \ m=?\\Q(-3)=(-3)^2+m*(-3)-12=0\\9-3m-12=0\\-3m-3=0\\3m=-3\ |:3\\m=-1.

3 0
2 years ago
In this triangle, the product of sin B and tan C is<br> and the product of sin Cand tan B is
Ipatiy [6.2K]

Answer:

\frac{c}{a} and \frac{b}{a}

Step-by-step explanation:

sinB = \frac{opposite}{hypotenuse} = \frac{AC}{BC} = \frac{b}{a}

tanC = \frac{opposite}{adjacent} = \frac{AB}{AC} = \frac{c}{b}

Thus

sinB tanC = \frac{b}{a} × \frac{c}{b} ( cancel b on numerator/ denominator )

                 = \frac{c}{a}

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

sinC = \frac{opposite}{hypotenuse} = \frac{AB}{BC} = \frac{c}{a}

tanB = \frac{opposite}{adjacent} = \frac{AC}{AB} = \frac{b}{c}

Thus

sinC tanB = \frac{c}{a} × \frac{b}{c} ( cancel c on numerator/ denominator )

                 = \frac{b}{a}

7 0
3 years ago
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