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3 years ago

Select the two binomials that are factors of this trinomial.

Mathematics

1 answer:

Alina [70]3 years ago

8 0

Answer:

(x-5) (x+4)

Step-by-step explanation:

x^2 - X-20

Factor

What two numbers multiply to -20 and add to -1

-5*4 = -20

-5+4 = -1

(x-5) (x+4)

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You invest $15,000 to start a hot dog stand at the local sports complex. It costs you $.65 to produce each hot dog. How many hot

SCORPION-xisa [38]

Answer:

Below is the procedure to find the answer: 30,000 hot dogs.

Explanation:

The average cost is found dividing the total cost by the number of hot dogs:

$Average\text{ }cost=Total\text{ }cost/Number\text{ }of\text{ }hot\text{ }dogs$

The total cost is the the sum of amount that you invest plus the product of the cost of producing each hot dog times the number of hot dogs:

$Total\text{ }cost=investment+Number\text{ }of\text{ }hot\text{ }dogs\times cost\text{ }to\text{ }produce\text{ }each\text{ }hot\text{ }dog$

Substitute the values:

$Total\text{ }cost=15,000+0.65x\\ \\ Averate\text{ }cost=(15,000+0.65x)/x=1.15$

Where x is the number of hot dogs.

Solve for x from the equation:

$(15,000+0.65x)/x=1.15\\ \\ 15,000+0.65x=1.15x\\ \\ 15,000=1.15x-0.65x\\ \\ 15,000=0.5x\\ \\ 15,000/0.5=x\\ \\ 30,000=x\\ \\ x=30,000$

Which shows you how you can find that the answer is 30,000 hot dogs.

8 0

3 years ago

9^-5/9^3 single positive exponent

Len [333]

Answer: 9^-8

Step-by-step explanation:

To get single positive exponent,

9^-5 / 9^3

Since the exponent is same

So we can solve the coefficient like this

9^-5-3

9^-8

3 0

3 years ago

Solve the quadratic equation by factoring. y=x^2+6x+8

prohojiy [21]

i am not sure but I also need the answer to this question

4 0

3 years ago

A single gram of a certain metallic substance has 0.52 gram of copper and 0.26 gram of zinc. The remaining portion of the substa

blagie [28]

First off all, if we have 1 gram of a substance that has 0.52 gram of copper and 0.26 gram of zinc, the remainder will be: $1gram-(0.52gram+0.26gram)=1gram-0.78gram=0.22gram$
Since we know that the remaining portion of the substance is nickel, we have 0.22 gram of nickel.

Now, Ben estimates that 1 gram of the substance has 0.2 gram of nickel. To find how many grams of nickel are in 35 grams of the substance, we are going to multiply the grams of the substance by the gram of nickel:
 $(35)(0.2)=7$
We can conclude that according to Ben, 35 grams of the substance has 7 grams of nickel.

But we know that in 1 gram of the substance are not 0.2 gram of nickel but 0.22. So lets multiply the grams of the substance by 0.22 to find the actual grams of nickel in it:
$(35)(0.22)=7.7$
We can conclude that 35 grams of the substance has 7.7 grams of nickel.

5 0

3 years ago

The expression below is a factorization of which of the following trinomials (3x-4)(x-1)

ICE Princess25 [194]

3x^2 - 7x + 4

Hope this is the answer you're searching for

6 0

3 years ago