All categories

3 years ago

Which expression is the factored form of

Mathematics

2 answers:

Solnce55 [7]3 years ago

8 0

Answer:

The answer is C on ED

Step-by-step explanation:

pashok25 [27]3 years ago

4 0

Answer:

The correct factored form is (x -2)(x - 5)

Step-by-step explanation:

When looking for the numbers to go in the parenthesis, find numbers that multiply to the final term and add up to the middle term. To find these, list out the factors of 10.

1 * 10

-1 * -10

2 * 5

-2 * -5

As you can see, -2 and -5 add up to -7. So we select these to go in the parenthesis with x.

(x - 2)(x - 5)

You might be interested in

If 5x - 3y = 1 and x = 2y - 4, then x • y = ?

Inessa05 [86]

Answer:

x = 2, y = 3

Step-by-step explanation:

i) It is given that 5x - 3y =1

ii) It is also given that x = 2y - 4

iii) we can substitute the value of x from ii) in the equation in i) and we will get 5(2y - 4) - 3y = 1 ⇒ 10y - 20 -3y = 1 ⇒ 7y = 21 ∴ y = 3

iv) substituting the value of y obtained in ii) we get x = (2 × 3) - 4 = 6 - 4 = 2.

v) Therefore x = 2.

4 0

3 years ago

Out of 1700 people 49% were females how many more males than females were at the concert?

bija089 [108]

Answer: 51% were males

Which means that there were 1% more males than females = 34 more males than Females

Step-by-step explanation:

100%-49%=51%

51%-49%=1%

1700x49%=833 females

1700x51%=867 males

867 Males -833 Females = 34 more Males

4 0

3 years ago

Write the statement “Mammals are animals that breathe air” in if-then form.

antiseptic1488 [7]

If the animal breaths air, then it is considered a mammal.

Currently it is written as a simple statement, rewriting it in the if-then form makes it a hypothesis more so.

Thus, this is how you would write the statement in if-then form.

Hope this helps!

8 0

3 years ago

The half-life of a certain medicine is 30 hours. The equation below gives the amount of the medicine (g, in grams) remaining in

anzhelika [568]

The number of days where 4 grams of the medicine remains in the body is

10 days.

The half-life of the medicine = 30 hours.

The equation that gives the amount of the medicine remaining in the body after t hours is:

$g=1024~(\frac{1}{2})^{\frac{t}{30}}$

we need to calculate after how many days the medicine remaining on the body will be 4 grams.

Half-life is the amount of time at which the value of a quantity is reduced to half of its initial value.

The formula is given by:

$N(t) = N_0 ~(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}$

$Where,\\N(t) = amount ~after~ t~ hours\\N_0 = Initial~ amount\\t = time \\t^{\frac{1}{2}} = half~ life~ of ~the ~quantity$

We have,

g = 4 grams

Substituting in the given equation.

We get,

$g=1024~(\frac{1}{2})^{\frac{t}{30}}\\4=1024~(\frac{1}{2})^{\frac{t}{30}}\\\frac{4}{1024}=(\frac{1}{2})^{\frac{t}{30}}\\\\\frac{1}{256}=(\frac{1}{2})^{\frac{t}{30}}$