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4 years ago

What are the solutions to the equation 7w-3 = w?

Mathematics

1 answer:

bearhunter [10]4 years ago

7 0

Answer:

w = 1/2

Step-by-step explanation:

7w-3 = w

Subtract 7w from each side

7w-7w-3 = w-7w

-3 = -6w

Divide each side by -6

-3/-6 = -6w/-6

1/2 =w

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Find the length of side AB, give your answer to 1 decimal place

Alex_Xolod [135]

Answer:

5.6 = AB

Step-by-step explanation:

Since this is a right triangle, we can use trig functions to find the length of AB

Cos theta = opp side/ hypotenuse

cos 62 = AB / BC

cos 62 = AB /12

Multiply each side by 12

12 cos 62 = AB

5.633658753 = AB

Rounding to 1 decimal place

5.6 = AB

We can also find AC

sin theta = opp side/ hypotenuse

sin 62 = AC / BC

sin 62 = AC /12

Multiply each side by 12

12 sin 62 = AC

10.59537111 = AC

Rounding to 1 decimal place

10.6 = AC

5 0

3 years ago

Read 2 more answers

5x+6y=13 and -5x+2y=11

murzikaleks [220]

$6y = 13 + 2y = 11$
$4y = 13 + 11$
$4y = 24$

$24 \div 4 =$
$6$

7 0

4 years ago

The manufacturer of a smart watch claims that individuals who pay attention to how many steps they take per day will inadvertent

drek231 [11]

Answer:

Hello your question is incomplete attached below is the complete question

answer : 1596 ± 2.861 $\sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } }$ ------ ( A )

Step-by-step explanation:

I will use excel function to resolve this question

Determine the 99% confidence of interval for the difference in mean number of steps by all people

∝ = 0.01

critical value ( t ) = 2.861 ( = TINV ( 0.01, 19 )

Given that :

S1 = 1580

S2 = 2350

n1 = 20

n2 = 20

Difference in mean = x1 - x2 = 1596

Margin of Error = t * $\sqrt{\frac{S^2_{1} }{n_{1} } +\frac{s^2_{2} }{n_{2} } }$

∴ 99% confidence of interval

= 1596 ± 2.861 $\sqrt{\frac{1580^2 }{20 } +\frac{2350^2 }{20 } }$ ------

8 0

3 years ago

I need help with #13-20 ? Please

OverLord2011 [107]

96 for 20
and 13 86
szdhxfcjgkhjk.

4 0

3 years ago

If the cube root parent function is horizontally stretched by a factor of 4, then translated 5 units right and 3 units up, write

Gala2k [10]

Answer:

The cube root parent function:

f(x) = $\sqrt[3]{x}$

Horizontally stretched by a factor of 4:

g(x) → f(1/4x) = $\sqrt[3]{1/4x}$

Translated 5 units right:

h(x) → g(x - 5) = $\sqrt[3]{1/4x - 5}$

Translated 3 units up:

k(x) → h(x) + 3 = $\sqrt[3]{1/4x - 5} + 3$

5 0

3 years ago