If the sides of triangle A have lengths of 30 cm, 40 cm, and 50 cm, what are the lengths of the sides of triangle D?

20 points if correct.

Andrei [34K]

Answer:

the answer is A the mean

5 0

3 years ago

Read 2 more answers

If f(x) = 2x^2+3 and g(x)= 5x, evaluate the following: a. f(g(x)) b. g(g(3)) c. g(f(-2))

marissa [1.9K]

Answer:

A = 50x^2+3

B = 75

C = 55

Step-by-step explanation:

$f(x)=2x^2+3\\g(x)=5x$

A. f(g(x))

$2(5x)^2+3\\2(25x^2)+3\\=50x^2+3$

B. g(g(3))

$5(5(3))\\5(15)\\=75$

C. g(f(-2))

$g(2(-2)^2+3)\\g(8+3)\\g(11)\\5(11)\\=55$

8 0

2 years ago

James has a job with a current salary of $42,000. He wants to earn a college degree that will take him 2 years to complete and i

FinnZ [79.3K]

To recover the investment James will take $\boxed{2.5{\text{ years}}}.$

Further Explanation:

Given:

The current salary of James is $\$ 42000.$

The time taken to complete the college degree is $2{\text{ years}}.$

The cost of the college degree is $\$ 28000.$

The James’ new salary after college degree will be $\$ 56000.$

Calculation:

The total investment of James can be calculated as follows,

$\begin{aligned}{\text{Investment}} &= {\text{Salary of 2 years}} + {\text{2 years tuition fees}} \\&= 2 \times 42000 + 2 \times 28000\\&= 84000 + 56000\\&= \$ 140000\\\end{aligned}$

The total investment for 2 years will be $\$ 140000.$

The James’ new salary after college degree will be $\$ 56000.$

The time taken by James to recover $\$ 140000.$

$\begin{aligned}{\text{Time}} &= \frac{{140000}}{{56000}}\\&= 2.5{\text{ years}}\\\end{aligned}$

To recover the investment James will take $\boxed{2.5{\text{ years}}}.$

Learn more:

Learn more about inverse of the function brainly.com/question/1632445
Learn more about range and domain of the function brainly.com/question/3412497
Learn more about profit and loss brainly.com/question/2479097

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Investment and return

Keywords: James, job, current salary, salary, $42000, earn, college, college degree, 2 years, complete, graduation, cost, $28000, per year, investment, recover, new salary, work, able, school, full time.

6 0

4 years ago

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Please help me with questions 8-13 I need help this is for a grade

sergiy2304 [10]

For triangles, area is 1/2 base times height
8. Base 15 1/4 and height 18. Base and height can be flipped around to make the math easier, so 1/2(18)(15 1/4) = 9(15 1/4) = 9(61/4) = 549/4= 137 1/4 sq inches

9. Base 13 and height 11. Area = (1/2)(13)(11)= (13/2)(11) = 143/2 = 71 1/2 sq inches

10. Same thing again. Base = 30, height = 20, so area = (1/2)(30)(20) = 15(20) = 300 square km.

11. Base = 8, height = 5, so (1/2)(8)(5)= 4(5)= 20 square feet.

12. Base = 5, height = 3, so area = (1/2)(5)(3)= (5/2)(3)= 15/2; for 200 tiles we would take (15/2)(200)= 15(100) = 1500 square cm

13. Monica forgot to multiply base and height by 1/2.

6 0

3 years ago

Kevin bought 2 pieces of gum and 3 pieces of candy for $3.25. Jordan bought 4 pieces of gum and 1 candy bar for $2.75 at the sam

jenyasd209 [6]

G=gum c=candy 2g+3c=3.25 4g+c=2.75 c=2.75-4g 2g+3(2.75-4g)=3.25 2g+8.25-12g=3.25 -10g=5.00 g=0.50 c=2.75-4(.50) c= 2.75-2.00 c=0.75

6 0

3 years ago