All categories

2 years ago

Please help with number 6 and 7. Real answers please!! Help me soon as posible.

Mathematics

2 answers:

Ipatiy [6.2K]2 years ago

7 0

Answer:

Step-by-step explanation:

jehdgdhdeoejejrbdnsnskd

kirza4 [7]2 years ago

3 0

Answer:

I don't know 6

number 7 is D

You might be interested in

True or false Controlled experiments can be randomized or nonrandomized

DIA [1.3K]

Answer:

True

Step-by-step explanation:

Using a random chance procedure to assign subjects to treatment or control reduces bias. d. In a blind experiment, the subjects do not know whether they are in the treatment group or control group.

3 0

3 years ago

I need help asap please

rjkz [21]

Answer:

$x = -\frac{3}{2}$ or $x = 1$

Step-by-step explanation:

Using the zero product property, first step is to set the given equation, $2x^2 + x - 1 = 2$ , to zero. Then factorise the left side.

Thus,

$2x^2 + x - 1 = 2$

Subtract 2 from both sides

$2x^2 + x - 1 - 2 = 2 - 2$

$2x^2 + x - 3 = 0$

Factorise the left side

$2x^2 + 3x - 2x - 3 = 0$

$x(2x + 3) - 1(2x + 3) = 0$

$(x - 1)(2x + 3) = 0$

Find the solution

$x - 1 = 0$

$2x + 3 = 0$

$x = 1$

$2x + 3 = 0$

$2x = -3$

$x = -\frac{3}{2}$

The answer is: $x = 1$ or $x = -\frac{3}{2}$

3 0

3 years ago

A car travels 90 miles in 1.5 hours. How many miles will it travel in 5 hours if its speed remains the same?

Anna [14]

Answer:

300 miles

Step-by-step explanation:

i am doing the same test right now

7 0

3 years ago

some numbers added to -11 is 37.divide this number by -12.then multiply by -8.what is the final number?

LUCKY_DIMON [66]

Since some number added to -11 is 37, we must do 37- (-11), which is 48. Then we check our work and find that 48+-11 is indeed 37. Now we divide 48 by -12, which is -4, multiply by -8 and get a final answer of 32.

6 0

3 years ago

The sum of 2 consecutive integers is -33.If n is the first integer,which equation best models the situation?

monitta

Answer:

You can choose which equation below suits your taste but I recommend the 2n + 1 = -33.

Step-by-step explanation:

$(n) + (n + 1) = - 33 \\ 2n + 1 = - 33 \\ 2n = - 32 \\ n = - 16$

5 0

3 years ago