2 years ago

I need help with this, please

Mathematics

1 answer:

ANTONII [103]2 years ago

6 0

Answer:

c, 85°

Step-by-step explanation:

95° + xz = 180° then

x = 180 ° - 95° = 85°

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3 over the power of 2 multiply by 3 over the power of 5

Nostrana [21]

Answer:

$3^2 \times 3^5 = 3^7$

3^2 * 3^5 = 3^7

Step-by-step explanation:

I assume you mean this:

$3^2 \times 3^5$

If so, then the rule is that when you multiply two numbers with the same base, you give the same base and add the exponents.

$3^2 \times 3^5 = 3^{2 + 5} = 3^7$

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3 years ago

How many solutions does the system have? \begin{cases} 5y =15x-40 \\\\ y = 3x-8 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ 5y=15x−40 y=3x−8 C

Ksenya-84 [330]

Answer:

Step-by-step explanation:

Converting the lines into the from $ax+by+c=0$

$5y=15x-40\\\Rightarrow 15x-5y-40=0$

$y=3x-8\\\Rightarrow 3x-y-8=0$

$\dfrac{a_1}{a_2}=\dfrac{15}{3}=5$

$\dfrac{b_1}{b_2}=\dfrac{-5}{-1}=5$

$\dfrac{c_1}{c_2}=\dfrac{-40}{-8}=5$

So, $\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}$ .

Hence, these lines have infinitely many solutions.

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2 years ago

Quadrilateral ABCD is reflected across the x -axis. What are the coordinates of quadrilateral A'B'C'D'? A. A' (5, –5), B' (1, –5

Yuki888 [10]

Answer:

=76559

Step-by-step explanation:

foggy

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3 years ago

The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If

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Answer:

B) $w\approx3.12$ pounds

Step-by-step explanation:

$w=0.9\sqrt{E}$

$w=0.9\sqrt{12}$

$w\approx3.12$

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2 years ago

Find the 31st term of the following sequence.<br><br> 9, 15, 21, ...

Marrrta [24]

The 31st term of this sequence is 189.
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3 years ago