3 years ago

49 =- 7/3y solve for y

Mathematics

1 answer:

Leokris [45]3 years ago

3 0

Answer:

hope it helps uh ........

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A box contains 160 fruits. Of the total number of fruits in the box, 30% are apples. 25% of the remaining fruits in the box are

zzz [600]

Answer: 105 oranges.

Step-by-step explanation:

30% + 25% = 0.55 * 100 = 55

160 - 55 = 105

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3 years ago

Given cosθ=√3/3 and sinθ<0. What is the value of sinθ?

KATRIN_1 [288]

$\sin^{2} \theta+\cos^{2} \theta=1 \\ \\ \sin^{2} \theta+\left(\frac{\sqrt{3}}{3} \right)^{2}=1 \\ \\ \sin^{2} \theta+\frac{1}{3}=1 \\ \\ \sin^{2} \theta=\frac{2}{3} \\ \\ \theta=-\frac{\sqrt{2}}{\sqrt{3}}=\boxed{-\frac{\sqrt{6}}{3}}$

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2 years ago

Find the characteristic polynomial of the matrix a=[−83−310].

rosijanka [135]

Assuming the matrix is

$\mathbf A=\begin{bmatrix}-8&3\\-3&10\end{bmatrix}$

we have characteristic polynomial given by the equation

$\det(\mathbf A-\lambda \mathbf I)=0\iff\begin{vmatrix}-8-\lambda&3\\-3&10-\lambda\end{vmatrix}=0$
$(-8-\lambda)(10-\lambda)-(-9)=0$
$\lambda^2-2\lambda-71=0$

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4 years ago

Without completing decide whether the value of each expression is on is much smaller than 1 close to 1 or much greater than 1

xxMikexx [17]

Answer:

Step-by-step explanation:

1) Larger

2) Less/Close

3) Less

4) Less

5)Less

6) Close

here is a tip if you need help with a question use

the mathhhhhh wayyyy

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3 years ago

Cameron has a stack of 13 identical books that is 30.55 cm tall. He divides the total height by the number of books to find the

Lesechka [4]

30.55 * 13=2.35
The width would be 2.35
So how many decimal places do you see?

7 0

3 years ago