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3 years ago

Please help me. WILL GIVE BRAINLIEST

Mathematics

2 answers:

AnnZ [28]3 years ago

6 0

Answer:

third option

Step-by-step explanation:

Given that x = - 2 + $\sqrt{8}$ is a root

Complex roots always occur as conjugate pairs , thus

x = - 2 + $\sqrt{8}$ is a root then x = - 2 - $\sqrt{8}$ is a root

The required factor is then

(x - (- 2 - $\sqrt{8}$ ) )

Aloiza [94]3 years ago

3 0

Answer:

Step-by-step explanation:

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Tourists from a tour bus were asked about places they visited during their stay in a city. The results are shown in the table.

Eddi Din [679]

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3 years ago

Need help for this. Math Alg

Alexandra [31]

Answer:

y = 2x - 3

Step-by-step explanation:

Since the equation for the line y = 2x + 5 is already in slope-intercept form (y = mx + b), the slope (m) is 2. A parallel line will have the same slope. Now use point-slope formula to find an equation for the parallel line including point (3,3). Point-slope formula is:

(y – y₁) = m(x – x₁), where m is the slope (2) and (x₁, y₁) is the point the line passes through (3,3).

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3 years ago

Rhonda has $4.85 in coins. If she has six more nickels than dimes and twice as many quarters as dimes, how many coins of each ty

Novay_Z [31]

Answer: nickels = 13, dimes = 7, quarters = 14

<u>Step-by-step explanation:</u>

First, set up the equations for each coin:

$\begin {array}{c|c|c|l}\underline{\quad Type\quad }&\underline{Value}&\underline{Quantity}&\underline{\qquad \qquad \qquad Equation\qquad }\\ Nickel& \$0.05&6+d&0.05(6+d) = 0.30 + 0.05d\\Dime& \$0.10&d&\qquad 0.10(d)=0.10d\\Quarter& \$0.25&2d&\qquad 0.25(2d)=0.50d\\\end{array}$

Next, the sum of the coins is $4.85 so substitute and solve for the variable:

Nickels + Dimes + Quarters = Sum

(0.30 + 0.05d) + 0.10d + 0.50d = 4.85

0.30 + 0.65d = 4.85

0.65d = 4.55

d = 7

Lastly, plug the d-value into the quantity equation for the nickels and quarters to find their quantity.

nickels: 6 + d = 6 + (7) = 13

quarters: 2d = 2(7) = 14

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