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3 years ago

Please help me I’ll give you brainless it’s due in 20 minutes

Mathematics

1 answer:

alexandr1967 [171]3 years ago

8 0

Answer:

1: y=5, x=2

2:y=1, x=6

3:x=5 and y=1

Step-by-step explanation:

For #1: Use substitution, substitute x=2 into the second equation

For #2: Set the two equations equal to each other and solve for y. Then plug in the value of y and solve for x.

For #3: Use substitution, substitute x=2y+3 into the second equation. Solve for y and plug in the value of y to solve for x.

If this helped, brainliest answer would be greatly appreciated!

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Please show an actual answer i need help

jek_recluse [69]

Answer:

1. wire is approx. 143.96 ft

2. pole is approx. 106.55 ft

Step-by-step explanation:

Mapping the information on the SOHCAHTOA picture below:

Φ = 46

wire = hypotenuse

adjacent side = 100

CAH is most suitable:

cos 46° = 100/wire => wire = 100/cos 46 ≈ 143.96

pole = opposite side + 3

TOA is most suitable:

tan 46° = (pole-3)/100 => pole = 3 + 100 * tan 46 ≈ 106.55

4 0

3 years ago

Find the solution to the equation z – 7 = 8.

Bas_tet [7]

Z - 7 = 8

subtract 7 from both sides

z = 15

hope this helped!

7 0

1 year ago

Read 2 more answers

How to write 100000 in scientific notation?

romanna [79]

The answer is
1×10^5

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3 years ago

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Find the 8th term of the geometric sequence 10, -40, 160, ...

mart [117]

Answer:

-163840

Step-by-step explanation:

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3 years ago

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You are planning on applying to the Knirhsdaeh institute as a psychology counselor. They hire millions of psychologists around t

elena-14-01-66 [18.8K]

Answer:

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

Step-by-step explanation:

Step(i):-

Given that the mean of the sample = $81 k

Given that the size of the sample 'n' = 23

Given that the standard deviation for the salaries is $13 k

Step(ii):-

98% of the confidence interval for the true average salary of Knirhsdaeh employees is determined by

 $(x^{-} - t_{0.02} \frac{S.D}{\sqrt{n} } , x^{-} + t_{0.02} \frac{S.D}{\sqrt{n} })$ 

Degrees of freedom = n-1 = 23-1 =22

 $t_{0.02} = 2.5083$ 

$(81 - 2.0583 \frac{13}{\sqrt{23} } , 81 + 2.0583 \frac{13}{\sqrt{23} } )$

( 81 - 5.57940 , 81 + 5.57940)

(75.4206, 86.5794)

Final answer:-

The 98% of the confidence interval for the true average salary of Knirhsdaeh employees as a psychology counselor

(75.4206, 86.5794)

7 0

3 years ago