ASAPP PLEASEESolve the following equation algebraically:
x2 = 20
a.4.47
b. -3.97, 3.97
c. -10, 10
d. -4.47, 4.47

Answers

Answer 1
Answer:

Answer: if using the quadratic formula it is D :)

hope this helps

Step-by-step explanation:


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Answers

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In art class students are mixing blue and red paint to make purple paint. Cai mixes 5 cups of blue paint and 6 cups of red paint. Casho mixes 2 cups of blue paint and 3 cups of red paint. Use Cai and Casho’s percent of blue paint to determine whose purple paint will be bluer.

Answers

Answer:

Cai's Would Be Bluer

Step-by-step explanation:

Since 2/5 is 40% and 5/11 is 45% Cai's would be bluer!

Final answer:

Cai's paint will be bluer because she used a higher percentage of blue paint (45.45%) in her mix compared to Casho who used 40% blue paint.

Explanation:

In order to determine whose paint mix will be bluer, we must compare the ratio of blue to red paint in each student's mix. Cai mixes 5 cups of blue and 6 cups of red paint. Casho mixes 2 cups of blue and 3 cups of red paint. We find the percentage of blue paint by dividing the amount of blue paint by the total amount of paint and then multiplying by 100. For Cai, it would be (5 / (5 + 6)) * 100 = 45.45% blue. For Casho, it would be (2 / (2 + 3)) * 100 = 40% blue. Thus, Cai's purple paint will be bluer because it has a higher percentage of blue paint.

Learn more about Percentage here:

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Solve the right triangle ABC, with C = 90.00◦ , a = 15.21 cm, b = 17.34 cm. Round to two decimal places.

Answers

Answer:

  • the hypotenuse side, c = 23.1 cm
  • angle A = 41.26 ⁰
  • angle B = 48.74 ⁰

Step-by-step explanation:

Given;

first leg of the right triangle, a = 15.21 cm

second leg of the right triangle, b = 17.34 cm

Angle C = 90 ⁰

The missing parameters;

  • the hypotenuse side = c
  • angle A
  • angle B

Use Pythagoras theorem to calculate the missing side "c", which is the hypotenuse

c² = a² + b²

c² = (15.21)²  +  (17.34)²

c² = 532.02

c = √532.02

c = 23.1 cm

The missing angle A is calculated as;

tan(A) = (a)/(b) \n\ntan(A) = (15.21)/(17.34) \n\ntan(A) = 0.8772 \n\nA = tan^(-1) (0.8772)\n\nA = 41.26^0

The missing angle is calculated as;

B = 90⁰ - A

B = 90⁰ - 41.26⁰

B = 48.74⁰

X2 + 17x − 12 = −84

Answers

Answer:

Step-by-step explanation:

The given quadratic equation is expressed as

x^2 + 17x − 12 = −84

Adding -84 to the left hand side and the right hand side of the equation, it becomes

x^2 + 17x − 12 + 84 = −84 + 84.

x^2 + 17x + 72 = 0

We would find two numbers such that their sum or difference is 17x and their product is 72x^2. The two numbers are 8x and 9x. Therefore

x^2 + 8x + 9x + 72 = 0

x( x + 8) + 9(x + 8) = 0

x + 9 = 0 or x + 8 = 0

x - 9 or x = 8

Solve the following problem:

Answers

Answer:

n^(8)

Step-by-step explanation:

Given the Quotient Rule of Exponents:(a^(m))/(a^(n)) = a^((m-n)), you must subtract the exponents of each exponential expression (in fractions) before applying the Product Rule of Exponents (I will explain in a while what it means).

First, subtract the exponents of the first fraction, (n^(5))/(n^(3)) = n^((5 - 3)) = n^(2)

Next, subtract the exponents of the second fraction:  (n^(9))/(n^(3)) = n^((9 - 3)) = n^(6)

At this point, we have the following exponential expressions: n^(2) and n^(6).

Since the required operation is multiplication, then you can apply the Product Rule of Exponents: a^(m) a^(n) = a^((m+n))

n^(2)*n^(6) = n^((2+6)) = n^(8)

Therefore, the correct answer is n^(8).

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Which situation is best represented by the following equation? 45w + 123.95 = 753.95 A. Erica paid $753.95 for dance classes. She paid a $123.95 registration fee and $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? B. Erica paid $753.95 for dance classes. She paid a $45 registration fee and $123.95 for each week she was enrolled in the classes. What is w, the number of weeks Erica was enrolled in dance classes? C. Erica and her sister paid $753.95 for dance classes. Erica paid $123.95 for each week she was enrolled in the classes, and her sister paid $45 for each week she was enrolled in the classes. What is w, the number of weeks Erica and her sister were enrolled in dance classes? D. Erica paid $753.95 for dance classes. She paid $123.95 for each week she was enrolled in the classes after using a coupon that gave her $45 off the price per week. What is w, the number of weeks Erica was enrolled in dance classes?

Answers

Answer:

It is A

Step-by-step explanation:

Because the variable is w and that would mean week so it is 45 every week

Answer:

It is A

Step-by-step explanation:

Because the variable is w and that would mean week so it is 45 every week