4 years ago

Solve the system by elimination {2x-3y=-1 {3x+4y=8

Mathematics

1 answer:

Llana [10]4 years ago

5 0

Hi I need help with some questions I have on a quiz / test

You might be interested in

Which of the following is a factor of 8x2 + 21x + 10? 2x + 5 4x + 5 x + 2 None of the above

zvonat [6]

(x+2) and (8x+5) are the two factors, so the answer here is (x+2)

4 0

3 years ago

Read 2 more answers

Find the two square roots of the number. 64

ikadub [295]

Answer: -8 & 8

Step-by-step explanation:

8•8 =64

(-8)•(-8)=64

5 0

4 years ago

Use CALCULUS to find coordinates of the turning point on C.

antiseptic1488 [7]

Oi

Just calculating the differential. Step by step:

$y=12 \sqrt{x} -x \frac{3}{2}-10 \\ \\ y=12x^{ \frac{1}{2} } -x \frac{3}{2}-10 \ \ \ \boxed{transform \ \sqrt{x} =x^{ \frac{1}{2} }} \\ \\ Differentiating \\ \\ y'=12. \frac{1}{2}.x^{ \frac{1}{2}-1 } -1.x^{1-1}. \frac{3}{2}-0 \\ \\ y'=6.x^{ -\frac{1}{2} } -x^{0}. \frac{3}{2} \\ \\ y'=6. \frac{1}{x^{ \frac{1}{2} }} -1. \frac{3}{2} \\ \\ \boxed{y'=\frac{6}{ \sqrt{x} } -\frac{3}{2}}$

If you want to know where the tangent has no slope:

$\frac{6}{ \sqrt{x} } - \frac{3}{2} =0 \\ \\ \frac{6}{ \sqrt{x} } = \frac{3}{2} \\ \\ 3 \sqrt{x} =12 \\ \\ \sqrt{x} = \frac{12}{3} \\ \\ \sqrt{x} =4 \\ \\ (\sqrt{x})^2 =4^2 \\ \\ x=16$

3 0

3 years ago

A rectangle had a length of 7 inches and a total of 14 square inches.what is the width of the rectangle ?

creativ13 [48]

2 because 7*2 is 14 idk if it's correct tho

7 0

3 years ago

Johnny makes wooden benches to sell. His advertising costs are $150 per month and each bench costs him $100 to make. If he sells

kicyunya [14]

Answer:

2 benches

Step-by-step explanation:

Selling Price per bench = $175

Cost per bench = $100

profit per bench = $175 - $100 = $75

assuming that he sell x benches a month,

profit in 1 month = $75x

given that his advertising costs are $150 per month, in order to break even, his profit must be equal to his advertising profit.

i.e

$75x = $150

x = 150/75

x = 2

4 0

3 years ago

Solve the system by elimination {2x-3y=-1 {3x+4y=8​

Solve the system by elimination {2x-3y=-1 {3x+4y=8