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3 years ago

The coefficient in the expression x + 7 is

Mathematics

1 answer:

Ludmilka [50]3 years ago

3 0

the coefficient in the expression is x

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Write [4^ squareroot 81] 5^

riadik2000 [5.3K]

Answer:

(⁴√81)⁵

= $81^{\frac{5}{4} }$

$81^{\frac{5}{4} }$

= 243

Step-by-step explanation:

(⁴√81)⁵

(3)⁵

= 243

4 0

3 years ago

Read 2 more answers

Lisa was hiking Death Valley and began at the elevation of 300 feet. She hiked down 450 feet. At what elevation did she end her

Annette [7]

750 feet plz give brainlest answer

4 0

3 years ago

Given cos theta = - 2/5 and sin theta < 0, find the six trigonometric values. I need help with this

Lena [83]

Answer:

$\sin\,\theta =-\frac{\sqrt{21} }{5}$

$\tan\,\theta =\frac{\sqrt{21} }{2}$

$\sec\,\theta = \frac{-5}{2}$

$cosec\,\theta =\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{2}{\sqrt{21} }$

Step-by-step explanation:

$\cos\theta =\frac{-2}{5}$

As both $sin\,\theta$ ,

$\theta$ lies in the third quadrant.

In the third quadrant,

$\sin\theta$

$\sin\,\theta =-\sqrt{1-\cos^2\,\theta} \\=-\sqrt{1-(\frac{-2}{5})^2 } \\\\=-\sqrt{1-\frac{4}{25} }\\\\=-\sqrt{\frac{25-4}{25} }\\\\=-\frac{\sqrt{21} }{5}$

$\tan\,\theta = \frac{\sin\,\theta}{\cos\,\theta }\\\\=\frac{\frac{-\sqrt{21} }{5} }{\frac{-2}{5} }\\\\=\frac{\sqrt{21} }{2}$

$\sec\,\theta =\frac{1}{\cos\,\theta }\\\\=\frac{1}{\frac{-2}{5} }\\\\=\frac{-5}{2}$

$\ cosec \,\theta = \frac{1}{sin\,\theta }\\\\=\frac{1}{\frac{-\sqrt{21} }{5} }\\\\=\frac{-5}{\sqrt{21} }$

$\cot\,\theta =\frac{1}{\tan\,\theta}\\\\=\frac{1}{\frac{\sqrt{21} }{2} }\\\\=\frac{2}{\sqrt{21} }$

3 0

3 years ago

Find the nth term of the AP -2 -5 -8....

timofeeve [1]

Answer:

an = -2 -3(n-1)

Step-by-step explanation:

an = a1+(n-1) d

a1 =-2

d = -5--2

d = -5+2

d=-3

we are decreasing by 3 each time

an = -2 + (n-1) * -3

an = -2 -3(n-1)

3 0

3 years ago

Q3.

Xelga [282]

Answer:

x = 12

Step-by-step explanation:

Given x varies as the cube root of y then the equation relating them is

x = k $\sqrt[3]{y}$ ← k is the constant of variation

To find k use the condition x = 6 when y = 8, thus

k = $\frac{x}{\sqrt[3]{y} }$ = $\frac{6}{\sqrt[3]{8} }$ = $\frac{6}{2}$ = 3

x = 3 $\sqrt[3]{y}$ ← equation of variation

When y = 64, then

x = 3 × $\sqrt[3]{64}$ = 3 × 4 = 12

6 0

3 years ago