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2 years ago

Solve the compound inequality:

Mathematics

1 answer:

Akimi4 [234]2 years ago

3 0

Answer:

20 > x > 10

Step-by-step explanation:

30 > x + 10 > 20

(take ten on each side to get x on its own and to get your final answer which is...)

20 > x + 10 > 10

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Select the two values of x that are roots of this equation. 2x+11x+15= 0

Amiraneli [1.4K]

Answer:

The roots of the equation are x=-3 and x=-2.5

Step-by-step explanation:

The correct quadratic equation is

2x^2+11x+15=0

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} +11x+15=0$

$a=2\\b=11\\c=15$

substitute in the formula

$x=\frac{-11(+/-)\sqrt{11^{2}-4(2)(15)}} {2(2)}$

$x=\frac{-11(+/-)\sqrt{121-120}} {4}$

$x=\frac{-11(+/-)\sqrt{1}} {4}$

$x=\frac{-11(+/-)1} {4}$

$x_1=\frac{-11(+)1}{4}=-2.5$

$x_2=\frac{-11(-)1}{4}=-3$

therefore

The roots of the equation are x=-3 and x=-2.5

5 0

2 years ago

Find the center!! PLEASE HELP

BartSMP [9]

D i think it’s right

7 0

2 years ago

What is the answer to 2x+4y=16:4y=12

allsm [11]

Answer:

Here,

$2x + 4y = 16....eqn \: i \\ 4y = 12....eqn \: ii$

substituting the value of 4y in eqn i fron eqn ii

so eqn i becomes

$2x + 12 = 16 \\ 2x = 4 \\ x = 2$

$y = 12 \div 4 = 3$

Thus,

$x = 2 \: and \: y = 3$

...hope this helps:)

8 0

1 year ago

1 point

Firdavs [7]

9514 1404 393

Answer:

(a) 2/100

Step-by-step explanation:

To determine the value of a digit, set all other digits to zero. Your digit has a value of ...

0.020 . . . two hundredths = 2/100

5 0

2 years ago

Read 2 more answers

-3m+10=25 need this fast please!

Ymorist [56]

Answer:

m=-5

Step-by-step explanation:

7 0

2 years ago